/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/test/easy11.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-06 20:57:38,426 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-06 20:57:38,431 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-06 20:57:38,495 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-10-06 20:57:38,560 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 20:57:38,597 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-06 20:57:38,599 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-06 20:57:38,599 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-06 20:57:38,600 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-06 20:57:38,602 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-06 20:57:38,602 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-06 20:57:38,603 INFO L138 SettingsManager]: * Use SBE=true [2021-10-06 20:57:38,605 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-06 20:57:38,605 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-06 20:57:38,605 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-06 20:57:38,606 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-06 20:57:38,606 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-06 20:57:38,607 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-06 20:57:38,607 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-06 20:57:38,607 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-06 20:57:38,608 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-06 20:57:38,608 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-06 20:57:38,608 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-06 20:57:38,608 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-06 20:57:38,608 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-06 20:57:38,609 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-06 20:57:38,609 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-06 20:57:38,609 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-06 20:57:38,609 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-06 20:57:38,610 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-06 20:57:38,610 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-06 20:57:38,610 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-06 20:57:38,610 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-06 20:57:38,610 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-06 20:57:38,611 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-06 20:57:38,611 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-06 20:57:38,611 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-06 20:57:38,611 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-06 20:57:39,016 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-06 20:57:39,051 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-06 20:57:39,054 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-06 20:57:39,056 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-06 20:57:39,056 INFO L275 PluginConnector]: CDTParser initialized [2021-10-06 20:57:39,057 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/test/easy11.wvr.c [2021-10-06 20:57:39,137 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a3c6817cd/030c013c27954b53a0106e8fcfa00115/FLAG38391f841 [2021-10-06 20:57:39,715 INFO L306 CDTParser]: Found 1 translation units. [2021-10-06 20:57:39,715 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/test/easy11.wvr.c [2021-10-06 20:57:39,727 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a3c6817cd/030c013c27954b53a0106e8fcfa00115/FLAG38391f841 [2021-10-06 20:57:40,099 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a3c6817cd/030c013c27954b53a0106e8fcfa00115 [2021-10-06 20:57:40,102 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-06 20:57:40,111 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-06 20:57:40,114 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-06 20:57:40,114 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-06 20:57:40,119 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-06 20:57:40,121 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 08:57:40" (1/1) ... [2021-10-06 20:57:40,123 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@445fa43b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 08:57:40, skipping insertion in model container [2021-10-06 20:57:40,124 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 08:57:40" (1/1) ... [2021-10-06 20:57:40,134 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-06 20:57:40,158 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-06 20:57:40,364 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/test/easy11.wvr.c[1843,1856] [2021-10-06 20:57:40,368 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-06 20:57:40,385 INFO L203 MainTranslator]: Completed pre-run [2021-10-06 20:57:40,409 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/test/easy11.wvr.c[1843,1856] [2021-10-06 20:57:40,410 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-06 20:57:40,431 INFO L208 MainTranslator]: Completed translation [2021-10-06 20:57:40,432 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 08:57:40 WrapperNode [2021-10-06 20:57:40,432 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-06 20:57:40,434 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-06 20:57:40,434 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-06 20:57:40,434 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-06 20:57:40,444 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 08:57:40" (1/1) ... [2021-10-06 20:57:40,456 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 08:57:40" (1/1) ... [2021-10-06 20:57:40,487 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-06 20:57:40,488 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-06 20:57:40,488 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-06 20:57:40,488 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-06 20:57:40,499 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 08:57:40" (1/1) ... [2021-10-06 20:57:40,500 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 08:57:40" (1/1) ... [2021-10-06 20:57:40,504 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 08:57:40" (1/1) ... [2021-10-06 20:57:40,504 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 08:57:40" (1/1) ... [2021-10-06 20:57:40,512 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 08:57:40" (1/1) ... [2021-10-06 20:57:40,517 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 08:57:40" (1/1) ... [2021-10-06 20:57:40,519 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 08:57:40" (1/1) ... [2021-10-06 20:57:40,522 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-06 20:57:40,523 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-06 20:57:40,524 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-06 20:57:40,524 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-06 20:57:40,525 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 08:57:40" (1/1) ... [2021-10-06 20:57:40,538 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-06 20:57:40,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 20:57:40,571 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 20:57:40,596 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 20:57:40,651 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-06 20:57:40,652 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-06 20:57:40,652 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-06 20:57:40,653 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-06 20:57:40,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-06 20:57:40,653 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-06 20:57:40,653 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-06 20:57:40,653 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-06 20:57:40,654 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-06 20:57:40,654 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-06 20:57:40,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-06 20:57:40,656 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 20:57:41,092 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-06 20:57:41,094 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-06 20:57:41,097 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 08:57:41 BoogieIcfgContainer [2021-10-06 20:57:41,098 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-06 20:57:41,102 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-06 20:57:41,102 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-06 20:57:41,106 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-06 20:57:41,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.10 08:57:40" (1/3) ... [2021-10-06 20:57:41,108 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75cdc614 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 08:57:41, skipping insertion in model container [2021-10-06 20:57:41,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 08:57:40" (2/3) ... [2021-10-06 20:57:41,110 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75cdc614 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 08:57:41, skipping insertion in model container [2021-10-06 20:57:41,111 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 08:57:41" (3/3) ... [2021-10-06 20:57:41,113 INFO L111 eAbstractionObserver]: Analyzing ICFG easy11.wvr.c [2021-10-06 20:57:41,125 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-06 20:57:41,125 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-10-06 20:57:41,126 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-06 20:57:41,188 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:41,189 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:41,189 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:41,189 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:41,190 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:41,190 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:41,191 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:41,191 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:41,191 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:41,194 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:41,195 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:41,195 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:41,195 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:41,196 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:41,199 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:41,199 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:41,200 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:41,200 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:41,200 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:41,201 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:41,204 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:41,204 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:41,204 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:41,205 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:41,205 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:41,205 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:41,206 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:41,206 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:41,206 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:41,207 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:41,209 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:41,210 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:41,210 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:41,211 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:41,211 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:41,211 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:41,212 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:41,212 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:41,213 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:41,213 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:41,220 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:41,221 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:41,221 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:41,221 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:41,229 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:41,229 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:41,229 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:41,230 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:41,245 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-10-06 20:57:41,381 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-06 20:57:41,389 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 20:57:41,390 INFO L340 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2021-10-06 20:57:41,408 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-06 20:57:41,423 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 86 places, 85 transitions, 186 flow [2021-10-06 20:57:41,428 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 86 places, 85 transitions, 186 flow [2021-10-06 20:57:41,435 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 86 places, 85 transitions, 186 flow [2021-10-06 20:57:41,519 INFO L129 PetriNetUnfolder]: 6/83 cut-off events. [2021-10-06 20:57:41,519 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-06 20:57:41,524 INFO L84 FinitePrefix]: Finished finitePrefix Result has 92 conditions, 83 events. 6/83 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 84 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2021-10-06 20:57:41,527 INFO L116 LiptonReduction]: Number of co-enabled transitions 660 [2021-10-06 20:57:49,018 INFO L131 LiptonReduction]: Checked pairs total: 698 [2021-10-06 20:57:49,019 INFO L133 LiptonReduction]: Total number of compositions: 81 [2021-10-06 20:57:49,029 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 27 transitions, 70 flow [2021-10-06 20:57:49,044 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 20:57:49,046 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 20:57:49,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2021-10-06 20:57:49,052 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:57:49,053 INFO L512 BasicCegarLoop]: trace histogram [1] [2021-10-06 20:57:49,054 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 20:57:49,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:57:49,060 INFO L82 PathProgramCache]: Analyzing trace with hash 330, now seen corresponding path program 1 times [2021-10-06 20:57:49,072 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:57:49,073 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1099430097] [2021-10-06 20:57:49,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 20:57:49,074 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:57:49,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:57:49,079 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 20:57:49,086 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 20:57:49,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 20:57:49,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-06 20:57:49,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:57:49,151 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 20:57:49,152 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:57:49,153 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 20:57:49,153 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:57:49,154 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1099430097] [2021-10-06 20:57:49,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1099430097] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 20:57:49,155 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 20:57:49,155 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0, 0] imperfect sequences [] total 0 [2021-10-06 20:57:49,157 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799972690] [2021-10-06 20:57:49,163 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-06 20:57:49,163 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:57:49,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-06 20:57:49,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-06 20:57:49,182 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 20:57:49,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:57:49,200 INFO L93 Difference]: Finished difference Result 64 states and 151 transitions. [2021-10-06 20:57:49,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-06 20:57:49,202 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 20:57:49,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:57:49,214 INFO L225 Difference]: With dead ends: 64 [2021-10-06 20:57:49,215 INFO L226 Difference]: Without dead ends: 64 [2021-10-06 20:57:49,216 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 20:57:49,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-10-06 20:57:49,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2021-10-06 20:57:49,259 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 20:57:49,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 151 transitions. [2021-10-06 20:57:49,263 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 151 transitions. Word has length 1 [2021-10-06 20:57:49,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:57:49,264 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 151 transitions. [2021-10-06 20:57:49,264 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 20:57:49,264 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 151 transitions. [2021-10-06 20:57:49,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-06 20:57:49,265 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:57:49,265 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-06 20:57:49,290 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 20:57:49,484 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 20:57:49,485 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 20:57:49,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:57:49,486 INFO L82 PathProgramCache]: Analyzing trace with hash 323118, now seen corresponding path program 1 times [2021-10-06 20:57:49,487 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:57:49,488 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [472402570] [2021-10-06 20:57:49,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 20:57:49,488 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:57:49,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:57:49,489 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 20:57:49,490 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 20:57:49,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 20:57:49,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-06 20:57:49,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:57:49,782 INFO L354 Elim1Store]: treesize reduction 142, result has 23.2 percent of original size [2021-10-06 20:57:49,784 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 18 treesize of output 48 [2021-10-06 20:57:50,189 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 20:57:50,189 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:57:50,203 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 20:57:50,204 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:57:50,204 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [472402570] [2021-10-06 20:57:50,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [472402570] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 20:57:50,205 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 20:57:50,205 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-06 20:57:50,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204424517] [2021-10-06 20:57:50,206 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-06 20:57:50,207 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:57:50,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-06 20:57:50,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 20:57:50,208 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 20:57:50,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:57:50,247 INFO L93 Difference]: Finished difference Result 58 states and 139 transitions. [2021-10-06 20:57:50,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 20:57:50,248 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 20:57:50,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:57:50,250 INFO L225 Difference]: With dead ends: 58 [2021-10-06 20:57:50,250 INFO L226 Difference]: Without dead ends: 58 [2021-10-06 20:57:50,251 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 20:57:50,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-10-06 20:57:50,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2021-10-06 20:57:50,258 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 20:57:50,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 139 transitions. [2021-10-06 20:57:50,260 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 139 transitions. Word has length 3 [2021-10-06 20:57:50,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:57:50,261 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 139 transitions. [2021-10-06 20:57:50,261 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 20:57:50,261 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 139 transitions. [2021-10-06 20:57:50,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-06 20:57:50,262 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:57:50,262 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-06 20:57:50,278 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 20:57:50,474 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 20:57:50,475 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 20:57:50,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:57:50,476 INFO L82 PathProgramCache]: Analyzing trace with hash 323119, now seen corresponding path program 1 times [2021-10-06 20:57:50,477 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:57:50,477 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [313516443] [2021-10-06 20:57:50,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 20:57:50,478 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:57:50,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:57:50,481 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 20:57:50,482 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 20:57:50,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 20:57:50,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-06 20:57:50,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:57:50,623 INFO L354 Elim1Store]: treesize reduction 76, result has 30.3 percent of original size [2021-10-06 20:57:50,624 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 20:57:50,698 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 20:57:50,698 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:57:50,752 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 20:57:50,753 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:57:50,753 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [313516443] [2021-10-06 20:57:50,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [313516443] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 20:57:50,754 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 20:57:50,754 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-06 20:57:50,754 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180464736] [2021-10-06 20:57:50,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 20:57:50,755 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:57:50,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 20:57:50,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 20:57:50,756 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 20:57:50,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:57:50,785 INFO L93 Difference]: Finished difference Result 52 states and 127 transitions. [2021-10-06 20:57:50,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 20:57:50,786 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 20:57:50,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:57:50,788 INFO L225 Difference]: With dead ends: 52 [2021-10-06 20:57:50,788 INFO L226 Difference]: Without dead ends: 52 [2021-10-06 20:57:50,788 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 39.4ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 20:57:50,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-10-06 20:57:50,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2021-10-06 20:57:50,795 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 20:57:50,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 127 transitions. [2021-10-06 20:57:50,796 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 127 transitions. Word has length 3 [2021-10-06 20:57:50,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:57:50,796 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 127 transitions. [2021-10-06 20:57:50,797 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 20:57:50,797 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 127 transitions. [2021-10-06 20:57:50,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-06 20:57:50,798 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:57:50,798 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-06 20:57:50,811 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 20:57:51,005 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 20:57:51,006 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 20:57:51,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:57:51,007 INFO L82 PathProgramCache]: Analyzing trace with hash 310522437, now seen corresponding path program 1 times [2021-10-06 20:57:51,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:57:51,009 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1529198002] [2021-10-06 20:57:51,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 20:57:51,009 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:57:51,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:57:51,011 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 20:57:51,014 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 20:57:51,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 20:57:51,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-06 20:57:51,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:57:51,190 INFO L354 Elim1Store]: treesize reduction 142, result has 23.2 percent of original size [2021-10-06 20:57:51,191 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 18 treesize of output 48 [2021-10-06 20:57:51,500 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 20:57:51,500 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:57:51,517 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 20:57:51,517 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:57:51,517 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1529198002] [2021-10-06 20:57:51,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1529198002] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 20:57:51,518 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 20:57:51,518 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-06 20:57:51,518 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108229068] [2021-10-06 20:57:51,519 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-06 20:57:51,519 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:57:51,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-06 20:57:51,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 20:57:51,520 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 20:57:51,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:57:51,541 INFO L93 Difference]: Finished difference Result 43 states and 100 transitions. [2021-10-06 20:57:51,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 20:57:51,542 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 20:57:51,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:57:51,543 INFO L225 Difference]: With dead ends: 43 [2021-10-06 20:57:51,543 INFO L226 Difference]: Without dead ends: 43 [2021-10-06 20:57:51,543 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 20:57:51,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-10-06 20:57:51,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2021-10-06 20:57:51,548 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 20:57:51,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 100 transitions. [2021-10-06 20:57:51,549 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 100 transitions. Word has length 5 [2021-10-06 20:57:51,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:57:51,550 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 100 transitions. [2021-10-06 20:57:51,550 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 20:57:51,550 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 100 transitions. [2021-10-06 20:57:51,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-06 20:57:51,551 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:57:51,551 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-06 20:57:51,564 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 20:57:51,763 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 20:57:51,763 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 20:57:51,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:57:51,765 INFO L82 PathProgramCache]: Analyzing trace with hash 310522438, now seen corresponding path program 1 times [2021-10-06 20:57:51,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:57:51,766 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1964805954] [2021-10-06 20:57:51,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 20:57:51,766 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:57:51,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:57:51,768 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 20:57:51,769 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 20:57:51,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 20:57:51,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-06 20:57:51,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:57:51,906 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 20:57:51,907 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:57:51,968 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 20:57:51,968 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:57:51,969 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1964805954] [2021-10-06 20:57:51,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1964805954] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 20:57:51,969 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 20:57:51,969 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-06 20:57:51,969 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480902029] [2021-10-06 20:57:51,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-06 20:57:51,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:57:51,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-06 20:57:51,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 20:57:51,971 INFO L87 Difference]: Start difference. First operand 43 states and 100 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 20:57:51,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:57:51,989 INFO L93 Difference]: Finished difference Result 34 states and 73 transitions. [2021-10-06 20:57:51,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 20:57:51,991 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 20:57:51,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:57:51,992 INFO L225 Difference]: With dead ends: 34 [2021-10-06 20:57:51,992 INFO L226 Difference]: Without dead ends: 34 [2021-10-06 20:57:51,992 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 20:57:51,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-10-06 20:57:51,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2021-10-06 20:57:51,996 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 20:57:51,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 73 transitions. [2021-10-06 20:57:51,997 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 73 transitions. Word has length 5 [2021-10-06 20:57:51,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:57:51,997 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 73 transitions. [2021-10-06 20:57:51,997 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 20:57:51,997 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 73 transitions. [2021-10-06 20:57:51,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-06 20:57:51,998 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:57:51,998 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:57:52,022 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 20:57:52,208 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 20:57:52,209 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 20:57:52,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:57:52,210 INFO L82 PathProgramCache]: Analyzing trace with hash -705047889, now seen corresponding path program 1 times [2021-10-06 20:57:52,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:57:52,211 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1753613651] [2021-10-06 20:57:52,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 20:57:52,211 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:57:52,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:57:52,213 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 20:57:52,214 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 20:57:52,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 20:57:52,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-06 20:57:52,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:57:52,502 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 20:57:52,502 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:57:52,773 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 20:57:52,773 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:57:52,774 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1753613651] [2021-10-06 20:57:52,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1753613651] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 20:57:52,774 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 20:57:52,774 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 10 [2021-10-06 20:57:52,774 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713379759] [2021-10-06 20:57:52,775 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 20:57:52,775 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:57:52,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 20:57:52,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-06 20:57:52,776 INFO L87 Difference]: Start difference. First operand 34 states and 73 transitions. Second operand has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:53,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:57:53,061 INFO L93 Difference]: Finished difference Result 59 states and 126 transitions. [2021-10-06 20:57:53,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 20:57:53,061 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-06 20:57:53,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:57:53,062 INFO L225 Difference]: With dead ends: 59 [2021-10-06 20:57:53,062 INFO L226 Difference]: Without dead ends: 44 [2021-10-06 20:57:53,063 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 263.8ms TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2021-10-06 20:57:53,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-10-06 20:57:53,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 38. [2021-10-06 20:57:53,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 2.2162162162162162) internal successors, (82), 37 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:53,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 82 transitions. [2021-10-06 20:57:53,068 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 82 transitions. Word has length 13 [2021-10-06 20:57:53,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:57:53,068 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 82 transitions. [2021-10-06 20:57:53,069 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:53,069 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 82 transitions. [2021-10-06 20:57:53,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-06 20:57:53,070 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:57:53,070 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:57:53,082 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 20:57:53,276 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 20:57:53,277 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 20:57:53,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:57:53,278 INFO L82 PathProgramCache]: Analyzing trace with hash 1820522575, now seen corresponding path program 2 times [2021-10-06 20:57:53,279 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:57:53,279 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1950687244] [2021-10-06 20:57:53,280 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 20:57:53,280 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:57:53,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:57:53,302 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 20:57:53,304 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 20:57:53,363 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-06 20:57:53,364 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:57:53,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-06 20:57:53,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:57:53,593 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 20:57:53,593 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:57:53,938 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 20:57:53,938 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:57:53,938 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1950687244] [2021-10-06 20:57:53,939 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1950687244] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 20:57:53,939 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 20:57:53,939 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 10 [2021-10-06 20:57:53,939 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714112871] [2021-10-06 20:57:53,940 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 20:57:53,940 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:57:53,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 20:57:53,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-06 20:57:53,941 INFO L87 Difference]: Start difference. First operand 38 states and 82 transitions. Second operand has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:54,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:57:54,305 INFO L93 Difference]: Finished difference Result 55 states and 125 transitions. [2021-10-06 20:57:54,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-06 20:57:54,306 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-06 20:57:54,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:57:54,307 INFO L225 Difference]: With dead ends: 55 [2021-10-06 20:57:54,307 INFO L226 Difference]: Without dead ends: 46 [2021-10-06 20:57:54,308 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 322.1ms TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2021-10-06 20:57:54,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-10-06 20:57:54,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 40. [2021-10-06 20:57:54,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 2.282051282051282) internal successors, (89), 39 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:54,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 89 transitions. [2021-10-06 20:57:54,312 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 89 transitions. Word has length 13 [2021-10-06 20:57:54,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:57:54,313 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 89 transitions. [2021-10-06 20:57:54,313 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:54,313 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 89 transitions. [2021-10-06 20:57:54,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-06 20:57:54,314 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:57:54,314 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:57:54,325 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-10-06 20:57:54,523 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 20:57:54,524 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 20:57:54,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:57:54,525 INFO L82 PathProgramCache]: Analyzing trace with hash 1754386555, now seen corresponding path program 3 times [2021-10-06 20:57:54,525 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:57:54,526 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1426304984] [2021-10-06 20:57:54,526 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 20:57:54,526 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:57:54,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:57:54,528 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 20:57:54,535 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 20:57:54,601 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-06 20:57:54,602 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:57:54,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-06 20:57:54,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:57:54,832 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 20:57:54,832 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:57:55,149 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 20:57:55,150 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:57:55,150 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1426304984] [2021-10-06 20:57:55,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1426304984] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 20:57:55,150 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 20:57:55,150 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 10 [2021-10-06 20:57:55,151 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142918295] [2021-10-06 20:57:55,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 20:57:55,151 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:57:55,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 20:57:55,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-06 20:57:55,152 INFO L87 Difference]: Start difference. First operand 40 states and 89 transitions. Second operand has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:55,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:57:55,638 INFO L93 Difference]: Finished difference Result 59 states and 137 transitions. [2021-10-06 20:57:55,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-06 20:57:55,639 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-06 20:57:55,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:57:55,640 INFO L225 Difference]: With dead ends: 59 [2021-10-06 20:57:55,640 INFO L226 Difference]: Without dead ends: 52 [2021-10-06 20:57:55,641 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 371.8ms TimeCoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2021-10-06 20:57:55,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-10-06 20:57:55,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 46. [2021-10-06 20:57:55,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 2.3555555555555556) internal successors, (106), 45 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:55,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 106 transitions. [2021-10-06 20:57:55,645 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 106 transitions. Word has length 13 [2021-10-06 20:57:55,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:57:55,646 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 106 transitions. [2021-10-06 20:57:55,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:55,646 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 106 transitions. [2021-10-06 20:57:55,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-06 20:57:55,647 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:57:55,647 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:57:55,660 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 20:57:55,859 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 20:57:55,860 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 20:57:55,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:57:55,862 INFO L82 PathProgramCache]: Analyzing trace with hash -1495190865, now seen corresponding path program 4 times [2021-10-06 20:57:55,862 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:57:55,863 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1901835704] [2021-10-06 20:57:55,863 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 20:57:55,863 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:57:55,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:57:55,864 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 20:57:55,865 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 20:57:55,936 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 20:57:55,936 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:57:55,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-06 20:57:55,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:57:56,127 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 20:57:56,128 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:57:56,457 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 20:57:56,457 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:57:56,458 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1901835704] [2021-10-06 20:57:56,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1901835704] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 20:57:56,458 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 20:57:56,458 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 10 [2021-10-06 20:57:56,458 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581832755] [2021-10-06 20:57:56,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 20:57:56,459 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:57:56,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 20:57:56,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-06 20:57:56,460 INFO L87 Difference]: Start difference. First operand 46 states and 106 transitions. Second operand has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:56,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:57:56,890 INFO L93 Difference]: Finished difference Result 71 states and 170 transitions. [2021-10-06 20:57:56,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-06 20:57:56,890 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-06 20:57:56,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:57:56,891 INFO L225 Difference]: With dead ends: 71 [2021-10-06 20:57:56,891 INFO L226 Difference]: Without dead ends: 62 [2021-10-06 20:57:56,892 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 338.7ms TimeCoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2021-10-06 20:57:56,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-10-06 20:57:56,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 56. [2021-10-06 20:57:56,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 2.4727272727272727) internal successors, (136), 55 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:56,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 136 transitions. [2021-10-06 20:57:56,897 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 136 transitions. Word has length 13 [2021-10-06 20:57:56,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:57:56,898 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 136 transitions. [2021-10-06 20:57:56,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:56,898 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 136 transitions. [2021-10-06 20:57:56,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-06 20:57:56,899 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:57:56,899 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:57:56,908 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 20:57:57,102 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 20:57:57,103 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 20:57:57,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:57:57,104 INFO L82 PathProgramCache]: Analyzing trace with hash -1561326885, now seen corresponding path program 5 times [2021-10-06 20:57:57,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:57:57,105 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1302085483] [2021-10-06 20:57:57,105 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 20:57:57,105 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:57:57,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:57:57,106 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 20:57:57,108 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 20:57:57,189 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-06 20:57:57,189 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:57:57,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-06 20:57:57,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:57:57,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:57,383 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:57:57,676 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 20:57:57,676 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:57:57,676 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1302085483] [2021-10-06 20:57:57,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1302085483] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 20:57:57,677 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 20:57:57,677 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 10 [2021-10-06 20:57:57,677 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25040031] [2021-10-06 20:57:57,677 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 20:57:57,678 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:57:57,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 20:57:57,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-06 20:57:57,679 INFO L87 Difference]: Start difference. First operand 56 states and 136 transitions. Second operand has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:57,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:57:57,954 INFO L93 Difference]: Finished difference Result 67 states and 161 transitions. [2021-10-06 20:57:57,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-06 20:57:57,955 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-06 20:57:57,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:57:57,956 INFO L225 Difference]: With dead ends: 67 [2021-10-06 20:57:57,957 INFO L226 Difference]: Without dead ends: 60 [2021-10-06 20:57:57,957 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 282.0ms TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2021-10-06 20:57:57,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-10-06 20:57:57,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 58. [2021-10-06 20:57:57,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 57 states have (on average 2.473684210526316) internal successors, (141), 57 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:57,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 141 transitions. [2021-10-06 20:57:57,962 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 141 transitions. Word has length 13 [2021-10-06 20:57:57,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:57:57,963 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 141 transitions. [2021-10-06 20:57:57,963 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:57,963 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 141 transitions. [2021-10-06 20:57:57,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-06 20:57:57,964 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:57:57,964 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:57:57,978 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 20:57:58,176 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 20:57:58,177 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 20:57:58,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:57:58,178 INFO L82 PathProgramCache]: Analyzing trace with hash -706614877, now seen corresponding path program 6 times [2021-10-06 20:57:58,178 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:57:58,178 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2145202795] [2021-10-06 20:57:58,179 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 20:57:58,179 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:57:58,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:57:58,180 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 20:57:58,181 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 20:57:58,262 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2021-10-06 20:57:58,263 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:57:58,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-06 20:57:58,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:57:58,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:58,454 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:57:58,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:58,723 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:57:58,723 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2145202795] [2021-10-06 20:57:58,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2145202795] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 20:57:58,723 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 20:57:58,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 10 [2021-10-06 20:57:58,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209823328] [2021-10-06 20:57:58,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 20:57:58,724 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:57:58,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 20:57:58,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-06 20:57:58,726 INFO L87 Difference]: Start difference. First operand 58 states and 141 transitions. Second operand has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:58,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:57:58,946 INFO L93 Difference]: Finished difference Result 71 states and 165 transitions. [2021-10-06 20:57:58,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 20:57:58,947 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-06 20:57:58,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:57:58,948 INFO L225 Difference]: With dead ends: 71 [2021-10-06 20:57:58,948 INFO L226 Difference]: Without dead ends: 62 [2021-10-06 20:57:58,949 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 246.5ms TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2021-10-06 20:57:58,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-10-06 20:57:58,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 58. [2021-10-06 20:57:58,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 57 states have (on average 2.43859649122807) 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 20:57:58,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 139 transitions. [2021-10-06 20:57:58,954 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 139 transitions. Word has length 13 [2021-10-06 20:57:58,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:57:58,954 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 139 transitions. [2021-10-06 20:57:58,955 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:58,955 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 139 transitions. [2021-10-06 20:57:58,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-06 20:57:58,956 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:57:58,956 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:57:58,970 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 20:57:59,167 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 20:57:59,168 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 20:57:59,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:57:59,168 INFO L82 PathProgramCache]: Analyzing trace with hash 785695621, now seen corresponding path program 1 times [2021-10-06 20:57:59,169 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:57:59,169 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [232211175] [2021-10-06 20:57:59,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 20:57:59,170 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:57:59,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:57:59,171 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 20:57:59,172 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 20:57:59,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 20:57:59,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-06 20:57:59,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:57:59,353 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 20:57:59,353 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:57:59,422 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:59,422 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:57:59,422 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [232211175] [2021-10-06 20:57:59,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [232211175] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-06 20:57:59,423 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-06 20:57:59,424 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2021-10-06 20:57:59,424 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569204713] [2021-10-06 20:57:59,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-06 20:57:59,426 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:57:59,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-06 20:57:59,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-06 20:57:59,430 INFO L87 Difference]: Start difference. First operand 58 states and 139 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:59,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:57:59,506 INFO L93 Difference]: Finished difference Result 80 states and 190 transitions. [2021-10-06 20:57:59,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-06 20:57:59,507 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-06 20:57:59,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:57:59,507 INFO L225 Difference]: With dead ends: 80 [2021-10-06 20:57:59,508 INFO L226 Difference]: Without dead ends: 80 [2021-10-06 20:57:59,508 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 30.6ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-10-06 20:57:59,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-10-06 20:57:59,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 60. [2021-10-06 20:57:59,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 2.4745762711864407) internal successors, (146), 59 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:59,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 146 transitions. [2021-10-06 20:57:59,512 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 146 transitions. Word has length 14 [2021-10-06 20:57:59,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:57:59,512 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 146 transitions. [2021-10-06 20:57:59,512 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:59,512 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 146 transitions. [2021-10-06 20:57:59,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-06 20:57:59,513 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:57:59,513 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:57:59,525 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2021-10-06 20:57:59,723 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 20:57:59,723 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 20:57:59,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:57:59,724 INFO L82 PathProgramCache]: Analyzing trace with hash -910983702, now seen corresponding path program 1 times [2021-10-06 20:57:59,725 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:57:59,725 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [820107540] [2021-10-06 20:57:59,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 20:57:59,726 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:57:59,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:57:59,727 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 20:57:59,728 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 20:57:59,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 20:57:59,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-06 20:57:59,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:57:59,935 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 20:57:59,935 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:58:00,014 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:00,015 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:58:00,015 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [820107540] [2021-10-06 20:58:00,015 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [820107540] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-06 20:58:00,015 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-06 20:58:00,015 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2021-10-06 20:58:00,015 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303514043] [2021-10-06 20:58:00,016 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-06 20:58:00,016 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:58:00,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-06 20:58:00,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-06 20:58:00,017 INFO L87 Difference]: Start difference. First operand 60 states and 146 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:00,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:58:00,119 INFO L93 Difference]: Finished difference Result 96 states and 206 transitions. [2021-10-06 20:58:00,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-06 20:58:00,120 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-06 20:58:00,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:58:00,121 INFO L225 Difference]: With dead ends: 96 [2021-10-06 20:58:00,121 INFO L226 Difference]: Without dead ends: 96 [2021-10-06 20:58:00,122 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 65.8ms TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-10-06 20:58:00,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-10-06 20:58:00,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 60. [2021-10-06 20:58:00,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 2.4745762711864407) internal successors, (146), 59 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:00,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 146 transitions. [2021-10-06 20:58:00,126 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 146 transitions. Word has length 14 [2021-10-06 20:58:00,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:58:00,127 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 146 transitions. [2021-10-06 20:58:00,127 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:00,127 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 146 transitions. [2021-10-06 20:58:00,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-06 20:58:00,128 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:58:00,128 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:58:00,149 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 20:58:00,329 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 20:58:00,329 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 20:58:00,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:58:00,330 INFO L82 PathProgramCache]: Analyzing trace with hash 1072710789, now seen corresponding path program 2 times [2021-10-06 20:58:00,331 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:58:00,331 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [731517214] [2021-10-06 20:58:00,331 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 20:58:00,331 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:58:00,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:58:00,333 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 20:58:00,334 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 20:58:00,457 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 20:58:00,457 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:58:00,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-06 20:58:00,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:58:00,547 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 20:58:00,547 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:58:00,621 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:00,621 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:58:00,621 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [731517214] [2021-10-06 20:58:00,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [731517214] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-06 20:58:00,621 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-06 20:58:00,621 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2021-10-06 20:58:00,621 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586086586] [2021-10-06 20:58:00,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-06 20:58:00,622 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:58:00,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-06 20:58:00,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-06 20:58:00,622 INFO L87 Difference]: Start difference. First operand 60 states and 146 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:00,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:58:00,739 INFO L93 Difference]: Finished difference Result 86 states and 195 transitions. [2021-10-06 20:58:00,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-06 20:58:00,740 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-06 20:58:00,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:58:00,742 INFO L225 Difference]: With dead ends: 86 [2021-10-06 20:58:00,742 INFO L226 Difference]: Without dead ends: 86 [2021-10-06 20:58:00,743 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 69.8ms TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-10-06 20:58:00,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-10-06 20:58:00,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 58. [2021-10-06 20:58:00,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 57 states have (on average 2.4035087719298245) internal successors, (137), 57 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:00,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 137 transitions. [2021-10-06 20:58:00,748 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 137 transitions. Word has length 14 [2021-10-06 20:58:00,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:58:00,750 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 137 transitions. [2021-10-06 20:58:00,750 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:00,750 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 137 transitions. [2021-10-06 20:58:00,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-06 20:58:00,752 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:58:00,752 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:58:00,762 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 20:58:00,957 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 20:58:00,958 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 20:58:00,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:58:00,959 INFO L82 PathProgramCache]: Analyzing trace with hash 999557940, now seen corresponding path program 2 times [2021-10-06 20:58:00,959 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:58:00,960 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1769978126] [2021-10-06 20:58:00,960 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 20:58:00,960 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:58:00,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:58:00,961 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 20:58:00,964 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 20:58:01,091 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 20:58:01,091 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:58:01,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-06 20:58:01,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:58:01,167 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 20:58:01,168 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:58:01,209 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 20:58:01,210 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:58:01,210 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1769978126] [2021-10-06 20:58:01,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1769978126] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:58:01,210 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:58:01,210 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-10-06 20:58:01,210 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709212720] [2021-10-06 20:58:01,211 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 20:58:01,211 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:58:01,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 20:58:01,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-06 20:58:01,212 INFO L87 Difference]: Start difference. First operand 58 states and 137 transitions. Second operand has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:01,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:58:01,299 INFO L93 Difference]: Finished difference Result 78 states and 177 transitions. [2021-10-06 20:58:01,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-06 20:58:01,299 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-06 20:58:01,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:58:01,303 INFO L225 Difference]: With dead ends: 78 [2021-10-06 20:58:01,303 INFO L226 Difference]: Without dead ends: 78 [2021-10-06 20:58:01,305 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 38.3ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-10-06 20:58:01,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-10-06 20:58:01,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 58. [2021-10-06 20:58:01,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 57 states have (on average 2.4035087719298245) internal successors, (137), 57 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:01,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 137 transitions. [2021-10-06 20:58:01,309 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 137 transitions. Word has length 14 [2021-10-06 20:58:01,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:58:01,309 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 137 transitions. [2021-10-06 20:58:01,309 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:01,310 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 137 transitions. [2021-10-06 20:58:01,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-06 20:58:01,310 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:58:01,310 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:58:01,322 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 20:58:01,520 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 20:58:01,521 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 20:58:01,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:58:01,521 INFO L82 PathProgramCache]: Analyzing trace with hash -618885238, now seen corresponding path program 3 times [2021-10-06 20:58:01,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:58:01,522 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1168687958] [2021-10-06 20:58:01,522 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 20:58:01,523 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:58:01,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:58:01,524 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 20:58:01,525 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 20:58:01,659 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-06 20:58:01,659 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:58:01,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-06 20:58:01,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:58:01,733 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 20:58:01,733 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:58:01,789 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:01,790 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:58:01,790 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1168687958] [2021-10-06 20:58:01,790 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1168687958] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-06 20:58:01,790 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-06 20:58:01,790 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2021-10-06 20:58:01,790 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207159587] [2021-10-06 20:58:01,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-06 20:58:01,791 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:58:01,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-06 20:58:01,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-06 20:58:01,792 INFO L87 Difference]: Start difference. First operand 58 states and 137 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:01,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:58:01,890 INFO L93 Difference]: Finished difference Result 76 states and 172 transitions. [2021-10-06 20:58:01,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-06 20:58:01,890 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-06 20:58:01,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:58:01,891 INFO L225 Difference]: With dead ends: 76 [2021-10-06 20:58:01,891 INFO L226 Difference]: Without dead ends: 76 [2021-10-06 20:58:01,891 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 67.3ms TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-10-06 20:58:01,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-10-06 20:58:01,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 56. [2021-10-06 20:58:01,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 2.327272727272727) internal successors, (128), 55 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:01,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 128 transitions. [2021-10-06 20:58:01,900 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 128 transitions. Word has length 14 [2021-10-06 20:58:01,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:58:01,901 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 128 transitions. [2021-10-06 20:58:01,901 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:01,901 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 128 transitions. [2021-10-06 20:58:01,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-06 20:58:01,901 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:58:01,902 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:58:01,911 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-06 20:58:02,109 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 20:58:02,109 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 20:58:02,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:58:02,110 INFO L82 PathProgramCache]: Analyzing trace with hash 1364809253, now seen corresponding path program 3 times [2021-10-06 20:58:02,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:58:02,111 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [523907626] [2021-10-06 20:58:02,111 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 20:58:02,112 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:58:02,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:58:02,113 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 20:58:02,114 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 20:58:02,267 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-06 20:58:02,267 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:58:02,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-06 20:58:02,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:58:02,367 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 20:58:02,367 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:58:02,423 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:02,423 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:58:02,423 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [523907626] [2021-10-06 20:58:02,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [523907626] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-06 20:58:02,423 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-06 20:58:02,424 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2021-10-06 20:58:02,424 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123025835] [2021-10-06 20:58:02,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-06 20:58:02,424 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:58:02,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-06 20:58:02,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-06 20:58:02,425 INFO L87 Difference]: Start difference. First operand 56 states and 128 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:02,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:58:02,514 INFO L93 Difference]: Finished difference Result 78 states and 165 transitions. [2021-10-06 20:58:02,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-06 20:58:02,515 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-06 20:58:02,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:58:02,516 INFO L225 Difference]: With dead ends: 78 [2021-10-06 20:58:02,516 INFO L226 Difference]: Without dead ends: 78 [2021-10-06 20:58:02,516 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 58.2ms TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-10-06 20:58:02,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-10-06 20:58:02,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 52. [2021-10-06 20:58:02,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 2.2745098039215685) internal successors, (116), 51 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:02,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 116 transitions. [2021-10-06 20:58:02,520 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 116 transitions. Word has length 14 [2021-10-06 20:58:02,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:58:02,520 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 116 transitions. [2021-10-06 20:58:02,520 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:02,520 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 116 transitions. [2021-10-06 20:58:02,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-06 20:58:02,521 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:58:02,521 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:58:02,533 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-10-06 20:58:02,733 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 20:58:02,734 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 20:58:02,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:58:02,734 INFO L82 PathProgramCache]: Analyzing trace with hash -284277886, now seen corresponding path program 1 times [2021-10-06 20:58:02,735 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:58:02,735 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1187648681] [2021-10-06 20:58:02,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 20:58:02,736 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:58:02,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:58:02,737 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 20:58:02,744 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 20:58:02,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 20:58:02,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 20:58:02,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:58:03,281 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 20:58:03,281 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:58:03,804 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 20:58:03,804 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:58:03,805 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1187648681] [2021-10-06 20:58:03,805 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1187648681] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:58:03,805 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:58:03,805 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-06 20:58:03,805 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252377103] [2021-10-06 20:58:03,806 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 20:58:03,806 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:58:03,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 20:58:03,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2021-10-06 20:58:03,812 INFO L87 Difference]: Start difference. First operand 52 states and 116 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 20:58:04,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:58:04,631 INFO L93 Difference]: Finished difference Result 93 states and 195 transitions. [2021-10-06 20:58:04,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-06 20:58:04,632 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 20:58:04,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:58:04,633 INFO L225 Difference]: With dead ends: 93 [2021-10-06 20:58:04,633 INFO L226 Difference]: Without dead ends: 74 [2021-10-06 20:58:04,633 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 957.8ms TimeCoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2021-10-06 20:58:04,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-10-06 20:58:04,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 56. [2021-10-06 20:58:04,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 2.272727272727273) internal successors, (125), 55 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:04,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 125 transitions. [2021-10-06 20:58:04,639 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 125 transitions. Word has length 15 [2021-10-06 20:58:04,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:58:04,639 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 125 transitions. [2021-10-06 20:58:04,640 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 20:58:04,640 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 125 transitions. [2021-10-06 20:58:04,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-06 20:58:04,640 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:58:04,640 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:58:04,651 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 20:58:04,849 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 20:58:04,850 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 20:58:04,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:58:04,850 INFO L82 PathProgramCache]: Analyzing trace with hash 698995170, now seen corresponding path program 2 times [2021-10-06 20:58:04,851 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:58:04,851 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1555488583] [2021-10-06 20:58:04,852 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 20:58:04,852 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:58:04,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:58:04,854 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 20:58:04,858 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 20:58:05,044 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 20:58:05,044 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:58:05,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-06 20:58:05,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:58:05,627 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 20:58:05,627 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:58:06,376 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 20:58:06,377 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:58:06,377 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1555488583] [2021-10-06 20:58:06,377 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1555488583] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:58:06,377 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:58:06,377 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-06 20:58:06,377 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291508465] [2021-10-06 20:58:06,378 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 20:58:06,378 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:58:06,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 20:58:06,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2021-10-06 20:58:06,379 INFO L87 Difference]: Start difference. First operand 56 states and 125 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 20:58:08,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:58:08,824 INFO L93 Difference]: Finished difference Result 136 states and 335 transitions. [2021-10-06 20:58:08,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-06 20:58:08,825 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 20:58:08,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:58:08,826 INFO L225 Difference]: With dead ends: 136 [2021-10-06 20:58:08,826 INFO L226 Difference]: Without dead ends: 118 [2021-10-06 20:58:08,827 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 2366.6ms TimeCoverageRelationStatistics Valid=196, Invalid=860, Unknown=0, NotChecked=0, Total=1056 [2021-10-06 20:58:08,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-10-06 20:58:08,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 74. [2021-10-06 20:58:08,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 73 states have (on average 2.4246575342465753) internal successors, (177), 73 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 20:58:08,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 177 transitions. [2021-10-06 20:58:08,831 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 177 transitions. Word has length 15 [2021-10-06 20:58:08,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:58:08,832 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 177 transitions. [2021-10-06 20:58:08,832 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 20:58:08,832 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 177 transitions. [2021-10-06 20:58:08,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-06 20:58:08,833 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:58:08,833 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:58:08,844 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 20:58:09,044 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 20:58:09,045 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 20:58:09,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:58:09,046 INFO L82 PathProgramCache]: Analyzing trace with hash -1876439128, now seen corresponding path program 3 times [2021-10-06 20:58:09,047 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:58:09,047 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [670476510] [2021-10-06 20:58:09,047 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 20:58:09,047 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:58:09,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:58:09,049 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 20:58:09,052 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 20:58:09,254 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-06 20:58:09,254 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:58:09,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-06 20:58:09,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:58:09,619 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 20:58:09,620 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:58:10,244 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 20:58:10,245 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:58:10,245 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [670476510] [2021-10-06 20:58:10,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [670476510] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:58:10,245 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:58:10,245 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-06 20:58:10,245 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273156287] [2021-10-06 20:58:10,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 20:58:10,246 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:58:10,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 20:58:10,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2021-10-06 20:58:10,246 INFO L87 Difference]: Start difference. First operand 74 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 20:58:15,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:58:15,030 INFO L93 Difference]: Finished difference Result 207 states and 528 transitions. [2021-10-06 20:58:15,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-10-06 20:58:15,032 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 20:58:15,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:58:15,037 INFO L225 Difference]: With dead ends: 207 [2021-10-06 20:58:15,037 INFO L226 Difference]: Without dead ends: 188 [2021-10-06 20:58:15,038 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 697 ImplicationChecksByTransitivity, 4195.1ms TimeCoverageRelationStatistics Valid=459, Invalid=1991, Unknown=0, NotChecked=0, Total=2450 [2021-10-06 20:58:15,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2021-10-06 20:58:15,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 92. [2021-10-06 20:58:15,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 91 states have (on average 2.7252747252747254) internal successors, (248), 91 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:15,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 248 transitions. [2021-10-06 20:58:15,045 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 248 transitions. Word has length 15 [2021-10-06 20:58:15,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:58:15,048 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 248 transitions. [2021-10-06 20:58:15,048 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 20:58:15,048 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 248 transitions. [2021-10-06 20:58:15,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-06 20:58:15,049 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:58:15,049 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:58:15,065 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 20:58:15,262 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 20:58:15,262 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 20:58:15,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:58:15,264 INFO L82 PathProgramCache]: Analyzing trace with hash -1942575148, now seen corresponding path program 4 times [2021-10-06 20:58:15,265 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:58:15,266 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [213401788] [2021-10-06 20:58:15,266 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 20:58:15,266 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:58:15,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:58:15,267 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 20:58:15,275 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 20:58:15,422 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 20:58:15,422 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:58:15,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-06 20:58:15,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:58:15,782 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 20:58:15,782 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:58:16,439 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 20:58:16,439 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:58:16,439 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [213401788] [2021-10-06 20:58:16,439 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [213401788] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:58:16,439 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:58:16,440 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-06 20:58:16,440 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228559669] [2021-10-06 20:58:16,440 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 20:58:16,440 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:58:16,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 20:58:16,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2021-10-06 20:58:16,441 INFO L87 Difference]: Start difference. First operand 92 states and 248 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 20:58:21,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:58:21,477 INFO L93 Difference]: Finished difference Result 220 states and 566 transitions. [2021-10-06 20:58:21,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-10-06 20:58:21,479 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 20:58:21,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:58:21,480 INFO L225 Difference]: With dead ends: 220 [2021-10-06 20:58:21,481 INFO L226 Difference]: Without dead ends: 208 [2021-10-06 20:58:21,482 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 713 ImplicationChecksByTransitivity, 4411.8ms TimeCoverageRelationStatistics Valid=502, Invalid=2150, Unknown=0, NotChecked=0, Total=2652 [2021-10-06 20:58:21,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2021-10-06 20:58:21,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 94. [2021-10-06 20:58:21,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 93 states have (on average 2.6989247311827955) internal successors, (251), 93 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:21,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 251 transitions. [2021-10-06 20:58:21,488 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 251 transitions. Word has length 15 [2021-10-06 20:58:21,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:58:21,488 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 251 transitions. [2021-10-06 20:58:21,488 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 20:58:21,488 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 251 transitions. [2021-10-06 20:58:21,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-06 20:58:21,489 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:58:21,489 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:58:21,501 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 20:58:21,701 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 20:58:21,701 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 20:58:21,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:58:21,702 INFO L82 PathProgramCache]: Analyzing trace with hash 50611446, now seen corresponding path program 5 times [2021-10-06 20:58:21,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:58:21,703 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [89802573] [2021-10-06 20:58:21,703 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 20:58:21,703 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:58:21,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:58:21,705 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 20:58:21,705 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 20:58:21,874 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-06 20:58:21,875 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:58:21,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-06 20:58:21,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:58:22,127 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 20:58:22,127 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:58:22,696 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 20:58:22,697 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:58:22,697 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [89802573] [2021-10-06 20:58:22,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [89802573] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:58:22,697 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:58:22,697 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-06 20:58:22,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931525630] [2021-10-06 20:58:22,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-06 20:58:22,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:58:22,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-06 20:58:22,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2021-10-06 20:58:22,700 INFO L87 Difference]: Start difference. First operand 94 states and 251 transitions. Second operand has 15 states, 14 states have (on average 2.0) internal successors, (28), 14 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 20:58:26,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:58:26,219 INFO L93 Difference]: Finished difference Result 230 states and 582 transitions. [2021-10-06 20:58:26,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-10-06 20:58:26,220 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.0) internal successors, (28), 14 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 15 [2021-10-06 20:58:26,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:58:26,222 INFO L225 Difference]: With dead ends: 230 [2021-10-06 20:58:26,222 INFO L226 Difference]: Without dead ends: 216 [2021-10-06 20:58:26,222 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 515 ImplicationChecksByTransitivity, 3023.3ms TimeCoverageRelationStatistics Valid=324, Invalid=1482, Unknown=0, NotChecked=0, Total=1806 [2021-10-06 20:58:26,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2021-10-06 20:58:26,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 120. [2021-10-06 20:58:26,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 119 states have (on average 2.957983193277311) internal successors, (352), 119 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:26,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 352 transitions. [2021-10-06 20:58:26,229 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 352 transitions. Word has length 15 [2021-10-06 20:58:26,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:58:26,229 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 352 transitions. [2021-10-06 20:58:26,229 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.0) internal successors, (28), 14 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 20:58:26,229 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 352 transitions. [2021-10-06 20:58:26,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-06 20:58:26,230 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:58:26,230 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:58:26,241 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 20:58:26,437 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 20:58:26,438 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 20:58:26,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:58:26,438 INFO L82 PathProgramCache]: Analyzing trace with hash -15524574, now seen corresponding path program 6 times [2021-10-06 20:58:26,439 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:58:26,439 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1650576413] [2021-10-06 20:58:26,439 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 20:58:26,440 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:58:26,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:58:26,442 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 20:58:26,444 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 20:58:26,632 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-06 20:58:26,632 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:58:26,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-06 20:58:26,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:58:26,975 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:26,976 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:58:27,560 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 20:58:27,561 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:58:27,561 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1650576413] [2021-10-06 20:58:27,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1650576413] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:58:27,561 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:58:27,561 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-06 20:58:27,562 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696763634] [2021-10-06 20:58:27,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 20:58:27,562 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:58:27,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 20:58:27,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2021-10-06 20:58:27,563 INFO L87 Difference]: Start difference. First operand 120 states and 352 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 20:58:32,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:58:32,051 INFO L93 Difference]: Finished difference Result 226 states and 572 transitions. [2021-10-06 20:58:32,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-10-06 20:58:32,052 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 20:58:32,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:58:32,054 INFO L225 Difference]: With dead ends: 226 [2021-10-06 20:58:32,054 INFO L226 Difference]: Without dead ends: 214 [2021-10-06 20:58:32,055 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 541 ImplicationChecksByTransitivity, 4150.8ms TimeCoverageRelationStatistics Valid=445, Invalid=1717, Unknown=0, NotChecked=0, Total=2162 [2021-10-06 20:58:32,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2021-10-06 20:58:32,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 116. [2021-10-06 20:58:32,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 115 states have (on average 2.869565217391304) internal successors, (330), 115 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:32,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 330 transitions. [2021-10-06 20:58:32,062 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 330 transitions. Word has length 15 [2021-10-06 20:58:32,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:58:32,062 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 330 transitions. [2021-10-06 20:58:32,062 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 20:58:32,062 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 330 transitions. [2021-10-06 20:58:32,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-06 20:58:32,063 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:58:32,063 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:58:32,076 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-10-06 20:58:32,276 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 20:58:32,276 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 20:58:32,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:58:32,277 INFO L82 PathProgramCache]: Analyzing trace with hash 1702224486, now seen corresponding path program 7 times [2021-10-06 20:58:32,278 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:58:32,278 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1575112988] [2021-10-06 20:58:32,278 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 20:58:32,278 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:58:32,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:58:32,280 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 20:58:32,280 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 20:58:32,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 20:58:32,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-06 20:58:32,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:58:33,050 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 20:58:33,050 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:58:33,819 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 20:58:33,820 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:58:33,820 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1575112988] [2021-10-06 20:58:33,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1575112988] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:58:33,820 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:58:33,820 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-06 20:58:33,821 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938813576] [2021-10-06 20:58:33,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 20:58:33,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:58:33,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 20:58:33,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2021-10-06 20:58:33,822 INFO L87 Difference]: Start difference. First operand 116 states and 330 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 20:58:37,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:58:37,148 INFO L93 Difference]: Finished difference Result 197 states and 533 transitions. [2021-10-06 20:58:37,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-06 20:58:37,150 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 20:58:37,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:58:37,152 INFO L225 Difference]: With dead ends: 197 [2021-10-06 20:58:37,152 INFO L226 Difference]: Without dead ends: 188 [2021-10-06 20:58:37,153 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 357 ImplicationChecksByTransitivity, 3284.3ms TimeCoverageRelationStatistics Valid=333, Invalid=1389, Unknown=0, NotChecked=0, Total=1722 [2021-10-06 20:58:37,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2021-10-06 20:58:37,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 120. [2021-10-06 20:58:37,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 119 states have (on average 2.7899159663865545) internal successors, (332), 119 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:37,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 332 transitions. [2021-10-06 20:58:37,160 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 332 transitions. Word has length 15 [2021-10-06 20:58:37,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:58:37,160 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 332 transitions. [2021-10-06 20:58:37,160 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 20:58:37,161 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 332 transitions. [2021-10-06 20:58:37,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-06 20:58:37,161 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:58:37,162 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:58:37,175 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Ended with exit code 0 [2021-10-06 20:58:37,374 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 20:58:37,374 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 20:58:37,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:58:37,375 INFO L82 PathProgramCache]: Analyzing trace with hash 23257730, now seen corresponding path program 8 times [2021-10-06 20:58:37,375 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:58:37,375 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [260102128] [2021-10-06 20:58:37,376 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 20:58:37,376 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:58:37,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:58:37,377 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 20:58:37,411 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 20:58:37,607 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 20:58:37,608 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:58:37,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-06 20:58:37,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:58:37,977 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 20:58:37,977 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:58:38,593 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 20:58:38,593 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:58:38,593 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [260102128] [2021-10-06 20:58:38,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [260102128] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:58:38,593 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:58:38,593 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-06 20:58:38,594 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344584103] [2021-10-06 20:58:38,594 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 20:58:38,594 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:58:38,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 20:58:38,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2021-10-06 20:58:38,595 INFO L87 Difference]: Start difference. First operand 120 states and 332 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 20:58:41,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:58:41,800 INFO L93 Difference]: Finished difference Result 249 states and 597 transitions. [2021-10-06 20:58:41,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-06 20:58:41,801 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 20:58:41,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:58:41,803 INFO L225 Difference]: With dead ends: 249 [2021-10-06 20:58:41,803 INFO L226 Difference]: Without dead ends: 222 [2021-10-06 20:58:41,804 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 362 ImplicationChecksByTransitivity, 2761.6ms TimeCoverageRelationStatistics Valid=252, Invalid=1388, Unknown=0, NotChecked=0, Total=1640 [2021-10-06 20:58:41,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2021-10-06 20:58:41,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 142. [2021-10-06 20:58:41,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 141 states have (on average 2.9078014184397163) internal successors, (410), 141 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have 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 L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 410 transitions. [2021-10-06 20:58:41,812 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 410 transitions. Word has length 15 [2021-10-06 20:58:41,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:58:41,812 INFO L470 AbstractCegarLoop]: Abstraction has 142 states and 410 transitions. [2021-10-06 20:58:41,812 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 20:58:41,812 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 410 transitions. [2021-10-06 20:58:41,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-06 20:58:41,813 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:58:41,813 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:58:41,826 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 20:58:42,026 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 20:58:42,026 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 20:58:42,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:58:42,027 INFO L82 PathProgramCache]: Analyzing trace with hash -852139796, now seen corresponding path program 9 times [2021-10-06 20:58:42,028 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:58:42,028 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [845748214] [2021-10-06 20:58:42,028 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 20:58:42,028 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:58:42,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:58:42,029 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 20:58:42,031 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 20:58:42,248 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-06 20:58:42,249 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:58:42,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-06 20:58:42,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:58:42,571 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 20:58:42,571 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:58:43,133 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 20:58:43,134 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:58:43,134 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [845748214] [2021-10-06 20:58:43,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [845748214] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:58:43,134 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:58:43,135 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-06 20:58:43,135 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394365973] [2021-10-06 20:58:43,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 20:58:43,136 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:58:43,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 20:58:43,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2021-10-06 20:58:43,137 INFO L87 Difference]: Start difference. First operand 142 states and 410 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 20:58:48,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:58:48,364 INFO L93 Difference]: Finished difference Result 434 states and 1284 transitions. [2021-10-06 20:58:48,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-10-06 20:58:48,366 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 20:58:48,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:58:48,369 INFO L225 Difference]: With dead ends: 434 [2021-10-06 20:58:48,369 INFO L226 Difference]: Without dead ends: 416 [2021-10-06 20:58:48,370 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 724 ImplicationChecksByTransitivity, 4522.3ms TimeCoverageRelationStatistics Valid=502, Invalid=2150, Unknown=0, NotChecked=0, Total=2652 [2021-10-06 20:58:48,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2021-10-06 20:58:48,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 194. [2021-10-06 20:58:48,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 193 states have (on average 3.2020725388601035) internal successors, (618), 193 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:48,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 618 transitions. [2021-10-06 20:58:48,386 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 618 transitions. Word has length 15 [2021-10-06 20:58:48,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:58:48,386 INFO L470 AbstractCegarLoop]: Abstraction has 194 states and 618 transitions. [2021-10-06 20:58:48,386 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 20:58:48,386 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 618 transitions. [2021-10-06 20:58:48,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-06 20:58:48,387 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:58:48,387 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:58:48,397 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Ended with exit code 0 [2021-10-06 20:58:48,590 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 20:58:48,591 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 20:58:48,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:58:48,591 INFO L82 PathProgramCache]: Analyzing trace with hash -918275816, now seen corresponding path program 10 times [2021-10-06 20:58:48,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:58:48,592 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [906348332] [2021-10-06 20:58:48,592 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 20:58:48,592 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:58:48,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:58:48,594 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 20:58:48,595 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 20:58:48,812 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 20:58:48,812 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:58:48,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 20:58:48,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:58:49,136 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 20:58:49,136 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:58:49,632 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 20:58:49,632 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:58:49,632 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [906348332] [2021-10-06 20:58:49,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [906348332] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:58:49,632 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:58:49,632 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-06 20:58:49,633 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413321298] [2021-10-06 20:58:49,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 20:58:49,633 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:58:49,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 20:58:49,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2021-10-06 20:58:49,634 INFO L87 Difference]: Start difference. First operand 194 states and 618 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 20:58:51,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:58:51,098 INFO L93 Difference]: Finished difference Result 233 states and 685 transitions. [2021-10-06 20:58:51,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-06 20:58:51,099 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 20:58:51,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:58:51,100 INFO L225 Difference]: With dead ends: 233 [2021-10-06 20:58:51,101 INFO L226 Difference]: Without dead ends: 224 [2021-10-06 20:58:51,101 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 1274.4ms TimeCoverageRelationStatistics Valid=130, Invalid=572, Unknown=0, NotChecked=0, Total=702 [2021-10-06 20:58:51,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2021-10-06 20:58:51,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 190. [2021-10-06 20:58:51,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 189 states have (on average 3.1534391534391535) internal successors, (596), 189 states have internal predecessors, (596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:51,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 596 transitions. [2021-10-06 20:58:51,110 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 596 transitions. Word has length 15 [2021-10-06 20:58:51,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:58:51,111 INFO L470 AbstractCegarLoop]: Abstraction has 190 states and 596 transitions. [2021-10-06 20:58:51,111 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 20:58:51,111 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 596 transitions. [2021-10-06 20:58:51,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-06 20:58:51,112 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:58:51,112 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:58:51,124 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 20:58:51,324 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 20:58:51,325 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 20:58:51,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:58:51,325 INFO L82 PathProgramCache]: Analyzing trace with hash 799473244, now seen corresponding path program 11 times [2021-10-06 20:58:51,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:58:51,326 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [170282112] [2021-10-06 20:58:51,326 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 20:58:51,327 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:58:51,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:58:51,328 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 20:58:51,330 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 20:58:51,575 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 20:58:51,575 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:58:51,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-06 20:58:51,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:58:51,844 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 20:58:51,844 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:58:52,176 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 20:58:52,176 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:58:52,176 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [170282112] [2021-10-06 20:58:52,176 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [170282112] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:58:52,177 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:58:52,177 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-06 20:58:52,177 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591191324] [2021-10-06 20:58:52,177 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-06 20:58:52,178 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:58:52,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-06 20:58:52,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2021-10-06 20:58:52,179 INFO L87 Difference]: Start difference. First operand 190 states and 596 transitions. Second operand has 15 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 14 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:52,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:58:52,666 INFO L93 Difference]: Finished difference Result 211 states and 630 transitions. [2021-10-06 20:58:52,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-06 20:58:52,667 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 14 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-06 20:58:52,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:58:52,668 INFO L225 Difference]: With dead ends: 211 [2021-10-06 20:58:52,669 INFO L226 Difference]: Without dead ends: 202 [2021-10-06 20:58:52,669 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 543.9ms TimeCoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2021-10-06 20:58:52,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2021-10-06 20:58:52,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 190. [2021-10-06 20:58:52,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 189 states have (on average 3.142857142857143) internal successors, (594), 189 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 20:58:52,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 594 transitions. [2021-10-06 20:58:52,676 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 594 transitions. Word has length 15 [2021-10-06 20:58:52,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:58:52,676 INFO L470 AbstractCegarLoop]: Abstraction has 190 states and 594 transitions. [2021-10-06 20:58:52,676 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 14 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:52,677 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 594 transitions. [2021-10-06 20:58:52,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-06 20:58:52,677 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:58:52,677 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:58:52,690 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 20:58:52,878 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 20:58:52,878 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 20:58:52,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:58:52,880 INFO L82 PathProgramCache]: Analyzing trace with hash 1525741716, now seen corresponding path program 12 times [2021-10-06 20:58:52,880 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:58:52,880 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1494112182] [2021-10-06 20:58:52,880 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 20:58:52,881 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:58:52,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:58:52,882 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 20:58:52,883 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 20:58:53,137 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-06 20:58:53,137 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:58:53,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-06 20:58:53,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:58:53,454 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 20:58:53,454 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:58:53,989 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 20:58:53,989 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:58:53,989 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1494112182] [2021-10-06 20:58:53,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1494112182] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:58:53,989 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:58:53,989 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-06 20:58:53,990 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691039848] [2021-10-06 20:58:53,990 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 20:58:53,990 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:58:53,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 20:58:53,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2021-10-06 20:58:53,991 INFO L87 Difference]: Start difference. First operand 190 states and 594 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 20:58:57,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:58:57,175 INFO L93 Difference]: Finished difference Result 318 states and 838 transitions. [2021-10-06 20:58:57,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-06 20:58:57,177 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 20:58:57,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:58:57,179 INFO L225 Difference]: With dead ends: 318 [2021-10-06 20:58:57,179 INFO L226 Difference]: Without dead ends: 294 [2021-10-06 20:58:57,180 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 313 ImplicationChecksByTransitivity, 3041.9ms TimeCoverageRelationStatistics Valid=248, Invalid=1012, Unknown=0, NotChecked=0, Total=1260 [2021-10-06 20:58:57,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2021-10-06 20:58:57,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 192. [2021-10-06 20:58:57,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 191 states have (on average 3.031413612565445) internal successors, (579), 191 states have internal predecessors, (579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:57,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 579 transitions. [2021-10-06 20:58:57,190 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 579 transitions. Word has length 15 [2021-10-06 20:58:57,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:58:57,190 INFO L470 AbstractCegarLoop]: Abstraction has 192 states and 579 transitions. [2021-10-06 20:58:57,190 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 20:58:57,190 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 579 transitions. [2021-10-06 20:58:57,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-06 20:58:57,191 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:58:57,191 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:58:57,209 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 20:58:57,404 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 20:58:57,405 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 20:58:57,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:58:57,405 INFO L82 PathProgramCache]: Analyzing trace with hash 488375522, now seen corresponding path program 13 times [2021-10-06 20:58:57,406 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:58:57,406 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2003200643] [2021-10-06 20:58:57,406 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 20:58:57,406 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:58:57,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:58:57,408 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 20:58:57,408 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 20:58:57,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 20:58:57,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-06 20:58:57,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:58:58,175 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 20:58:58,175 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:58:58,894 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 20:58:58,895 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:58:58,895 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2003200643] [2021-10-06 20:58:58,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2003200643] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:58:58,896 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:58:58,896 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-06 20:58:58,896 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609110863] [2021-10-06 20:58:58,896 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 20:58:58,897 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:58:58,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 20:58:58,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2021-10-06 20:58:58,898 INFO L87 Difference]: Start difference. First operand 192 states and 579 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 20:59:02,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:59:02,075 INFO L93 Difference]: Finished difference Result 331 states and 938 transitions. [2021-10-06 20:59:02,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-06 20:59:02,076 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 20:59:02,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:59:02,078 INFO L225 Difference]: With dead ends: 331 [2021-10-06 20:59:02,079 INFO L226 Difference]: Without dead ends: 314 [2021-10-06 20:59:02,080 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 363 ImplicationChecksByTransitivity, 3066.3ms TimeCoverageRelationStatistics Valid=333, Invalid=1389, Unknown=0, NotChecked=0, Total=1722 [2021-10-06 20:59:02,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2021-10-06 20:59:02,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 188. [2021-10-06 20:59:02,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 187 states have (on average 2.9572192513368982) internal successors, (553), 187 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:02,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 553 transitions. [2021-10-06 20:59:02,089 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 553 transitions. Word has length 15 [2021-10-06 20:59:02,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:59:02,089 INFO L470 AbstractCegarLoop]: Abstraction has 188 states and 553 transitions. [2021-10-06 20:59:02,090 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 20:59:02,090 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 553 transitions. [2021-10-06 20:59:02,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-06 20:59:02,091 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:59:02,091 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:59:02,103 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 20:59:02,303 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 20:59:02,303 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 20:59:02,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:59:02,304 INFO L82 PathProgramCache]: Analyzing trace with hash 2096125656, now seen corresponding path program 14 times [2021-10-06 20:59:02,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:59:02,305 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [570790718] [2021-10-06 20:59:02,305 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 20:59:02,305 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:59:02,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:59:02,306 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 20:59:02,307 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 20:59:02,556 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 20:59:02,556 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:59:02,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-06 20:59:02,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:59:02,649 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:59:02,649 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:59:02,748 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:59:02,748 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:59:02,748 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [570790718] [2021-10-06 20:59:02,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [570790718] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:59:02,748 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:59:02,748 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2021-10-06 20:59:02,749 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103580498] [2021-10-06 20:59:02,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-06 20:59:02,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:59:02,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-06 20:59:02,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-10-06 20:59:02,750 INFO L87 Difference]: Start difference. First operand 188 states and 553 transitions. Second operand has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:02,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:59:02,960 INFO L93 Difference]: Finished difference Result 250 states and 685 transitions. [2021-10-06 20:59:02,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 20:59:02,961 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 0 states have call successors, (0), 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 20:59:02,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:59:02,962 INFO L225 Difference]: With dead ends: 250 [2021-10-06 20:59:02,963 INFO L226 Difference]: Without dead ends: 250 [2021-10-06 20:59:02,963 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 142.9ms TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-10-06 20:59:02,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2021-10-06 20:59:02,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 182. [2021-10-06 20:59:02,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 181 states have (on average 2.9502762430939224) internal successors, (534), 181 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:02,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 534 transitions. [2021-10-06 20:59:02,972 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 534 transitions. Word has length 16 [2021-10-06 20:59:02,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:59:02,972 INFO L470 AbstractCegarLoop]: Abstraction has 182 states and 534 transitions. [2021-10-06 20:59:02,972 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:02,972 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 534 transitions. [2021-10-06 20:59:02,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-06 20:59:02,973 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:59:02,973 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:59:02,986 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 20:59:03,185 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 20:59:03,186 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 20:59:03,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:59:03,187 INFO L82 PathProgramCache]: Analyzing trace with hash 355202814, now seen corresponding path program 15 times [2021-10-06 20:59:03,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:59:03,187 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1085766403] [2021-10-06 20:59:03,188 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 20:59:03,188 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:59:03,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:59:03,189 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 20:59:03,190 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 20:59:03,449 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-06 20:59:03,449 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:59:03,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-06 20:59:03,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:59:03,544 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:59:03,544 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:59:03,689 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:59:03,690 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:59:03,690 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1085766403] [2021-10-06 20:59:03,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1085766403] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:59:03,690 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:59:03,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2021-10-06 20:59:03,691 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217537212] [2021-10-06 20:59:03,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-06 20:59:03,692 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:59:03,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-06 20:59:03,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-10-06 20:59:03,693 INFO L87 Difference]: Start difference. First operand 182 states and 534 transitions. Second operand has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:04,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:59:04,339 INFO L93 Difference]: Finished difference Result 282 states and 744 transitions. [2021-10-06 20:59:04,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-06 20:59:04,340 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-06 20:59:04,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:59:04,342 INFO L225 Difference]: With dead ends: 282 [2021-10-06 20:59:04,342 INFO L226 Difference]: Without dead ends: 282 [2021-10-06 20:59:04,343 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 488.9ms TimeCoverageRelationStatistics Valid=122, Invalid=340, Unknown=0, NotChecked=0, Total=462 [2021-10-06 20:59:04,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2021-10-06 20:59:04,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 182. [2021-10-06 20:59:04,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 181 states have (on average 2.9502762430939224) internal successors, (534), 181 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:04,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 534 transitions. [2021-10-06 20:59:04,350 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 534 transitions. Word has length 16 [2021-10-06 20:59:04,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:59:04,351 INFO L470 AbstractCegarLoop]: Abstraction has 182 states and 534 transitions. [2021-10-06 20:59:04,351 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:04,351 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 534 transitions. [2021-10-06 20:59:04,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-06 20:59:04,352 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:59:04,352 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:59:04,366 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 20:59:04,564 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 20:59:04,565 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 20:59:04,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:59:04,565 INFO L82 PathProgramCache]: Analyzing trace with hash -924219599, now seen corresponding path program 16 times [2021-10-06 20:59:04,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:59:04,566 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [952564696] [2021-10-06 20:59:04,566 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 20:59:04,567 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:59:04,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:59:04,568 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 20:59:04,604 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 20:59:04,832 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 20:59:04,832 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:59:04,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-06 20:59:04,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:59:04,910 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:59:04,910 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:59:05,001 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:59:05,001 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:59:05,001 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [952564696] [2021-10-06 20:59:05,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [952564696] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:59:05,002 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:59:05,002 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2021-10-06 20:59:05,002 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504639605] [2021-10-06 20:59:05,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-06 20:59:05,003 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:59:05,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-06 20:59:05,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-10-06 20:59:05,004 INFO L87 Difference]: Start difference. First operand 182 states and 534 transitions. Second operand has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:05,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:59:05,190 INFO L93 Difference]: Finished difference Result 228 states and 633 transitions. [2021-10-06 20:59:05,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 20:59:05,191 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 0 states have call successors, (0), 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 20:59:05,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:59:05,192 INFO L225 Difference]: With dead ends: 228 [2021-10-06 20:59:05,192 INFO L226 Difference]: Without dead ends: 228 [2021-10-06 20:59:05,193 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 144.9ms TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-10-06 20:59:05,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2021-10-06 20:59:05,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 174. [2021-10-06 20:59:05,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 173 states have (on average 2.901734104046243) internal successors, (502), 173 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:05,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 502 transitions. [2021-10-06 20:59:05,200 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 502 transitions. Word has length 16 [2021-10-06 20:59:05,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:59:05,201 INFO L470 AbstractCegarLoop]: Abstraction has 174 states and 502 transitions. [2021-10-06 20:59:05,201 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:05,201 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 502 transitions. [2021-10-06 20:59:05,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-06 20:59:05,202 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:59:05,202 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:59:05,214 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Ended with exit code 0 [2021-10-06 20:59:05,414 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 20:59:05,415 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 20:59:05,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:59:05,416 INFO L82 PathProgramCache]: Analyzing trace with hash -787313014, now seen corresponding path program 17 times [2021-10-06 20:59:05,416 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:59:05,416 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1992863094] [2021-10-06 20:59:05,416 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 20:59:05,417 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:59:05,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:59:05,418 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 20:59:05,419 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 20:59:05,676 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-06 20:59:05,676 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:59:05,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-06 20:59:05,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:59:05,740 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:59:05,740 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:59:05,867 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:59:05,867 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:59:05,867 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1992863094] [2021-10-06 20:59:05,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1992863094] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:59:05,868 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:59:05,868 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 10 [2021-10-06 20:59:05,868 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915948525] [2021-10-06 20:59:05,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-06 20:59:05,877 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:59:05,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-06 20:59:05,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-06 20:59:05,878 INFO L87 Difference]: Start difference. First operand 174 states and 502 transitions. Second operand has 10 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:06,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:59:06,378 INFO L93 Difference]: Finished difference Result 306 states and 774 transitions. [2021-10-06 20:59:06,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-06 20:59:06,378 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-06 20:59:06,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:59:06,380 INFO L225 Difference]: With dead ends: 306 [2021-10-06 20:59:06,380 INFO L226 Difference]: Without dead ends: 306 [2021-10-06 20:59:06,381 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 332.0ms TimeCoverageRelationStatistics Valid=99, Invalid=281, Unknown=0, NotChecked=0, Total=380 [2021-10-06 20:59:06,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2021-10-06 20:59:06,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 186. [2021-10-06 20:59:06,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 185 states have (on average 2.9945945945945946) internal successors, (554), 185 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:06,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 554 transitions. [2021-10-06 20:59:06,388 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 554 transitions. Word has length 16 [2021-10-06 20:59:06,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:59:06,389 INFO L470 AbstractCegarLoop]: Abstraction has 186 states and 554 transitions. [2021-10-06 20:59:06,389 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:06,389 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 554 transitions. [2021-10-06 20:59:06,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-06 20:59:06,390 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:59:06,390 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:59:06,402 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Ended with exit code 0 [2021-10-06 20:59:06,602 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 20:59:06,603 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 20:59:06,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:59:06,604 INFO L82 PathProgramCache]: Analyzing trace with hash 1888952478, now seen corresponding path program 18 times [2021-10-06 20:59:06,604 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:59:06,605 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1236995360] [2021-10-06 20:59:06,605 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 20:59:06,605 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:59:06,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:59:06,610 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 20:59:06,612 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 20:59:06,887 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-06 20:59:06,887 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:59:06,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-06 20:59:06,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:59:06,964 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:59:06,964 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:59:07,087 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:59:07,087 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:59:07,089 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1236995360] [2021-10-06 20:59:07,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1236995360] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:59:07,089 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:59:07,090 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2021-10-06 20:59:07,090 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549031229] [2021-10-06 20:59:07,090 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-06 20:59:07,090 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:59:07,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-06 20:59:07,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-06 20:59:07,091 INFO L87 Difference]: Start difference. First operand 186 states and 554 transitions. Second operand has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:07,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:59:07,469 INFO L93 Difference]: Finished difference Result 272 states and 717 transitions. [2021-10-06 20:59:07,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-06 20:59:07,469 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 0 states have call successors, (0), 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 20:59:07,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:59:07,471 INFO L225 Difference]: With dead ends: 272 [2021-10-06 20:59:07,471 INFO L226 Difference]: Without dead ends: 272 [2021-10-06 20:59:07,472 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 266.6ms TimeCoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2021-10-06 20:59:07,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2021-10-06 20:59:07,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 172. [2021-10-06 20:59:07,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 171 states have (on average 2.9883040935672516) internal successors, (511), 171 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:07,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 511 transitions. [2021-10-06 20:59:07,478 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 511 transitions. Word has length 16 [2021-10-06 20:59:07,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:59:07,478 INFO L470 AbstractCegarLoop]: Abstraction has 172 states and 511 transitions. [2021-10-06 20:59:07,478 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:07,479 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 511 transitions. [2021-10-06 20:59:07,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 20:59:07,479 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:59:07,479 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:59:07,492 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2021-10-06 20:59:07,691 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 20:59:07,692 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 20:59:07,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:59:07,693 INFO L82 PathProgramCache]: Analyzing trace with hash 1684347535, now seen corresponding path program 19 times [2021-10-06 20:59:07,694 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:59:07,694 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [217201534] [2021-10-06 20:59:07,695 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 20:59:07,695 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:59:07,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:59:07,696 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 20:59:07,696 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 20:59:07,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 20:59:07,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-06 20:59:07,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:59:08,476 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 20:59:08,476 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:59:09,130 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 20:59:09,130 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:59:09,131 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [217201534] [2021-10-06 20:59:09,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [217201534] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:59:09,131 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:59:09,131 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 20:59:09,131 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473682471] [2021-10-06 20:59:09,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 20:59:09,131 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:59:09,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 20:59:09,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2021-10-06 20:59:09,132 INFO L87 Difference]: Start difference. First operand 172 states and 511 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 20:59:10,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:59:10,945 INFO L93 Difference]: Finished difference Result 275 states and 781 transitions. [2021-10-06 20:59:10,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-06 20:59:10,946 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 20:59:10,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:59:10,947 INFO L225 Difference]: With dead ends: 275 [2021-10-06 20:59:10,947 INFO L226 Difference]: Without dead ends: 252 [2021-10-06 20:59:10,948 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 2009.2ms TimeCoverageRelationStatistics Valid=107, Invalid=595, Unknown=0, NotChecked=0, Total=702 [2021-10-06 20:59:10,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2021-10-06 20:59:10,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 176. [2021-10-06 20:59:10,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 175 states have (on average 2.9714285714285715) internal successors, (520), 175 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:10,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 520 transitions. [2021-10-06 20:59:10,956 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 520 transitions. Word has length 17 [2021-10-06 20:59:10,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:59:10,956 INFO L470 AbstractCegarLoop]: Abstraction has 176 states and 520 transitions. [2021-10-06 20:59:10,957 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 20:59:10,957 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 520 transitions. [2021-10-06 20:59:10,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 20:59:10,958 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:59:10,958 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:59:10,971 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 20:59:11,170 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 20:59:11,171 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 20:59:11,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:59:11,172 INFO L82 PathProgramCache]: Analyzing trace with hash 2101041199, now seen corresponding path program 20 times [2021-10-06 20:59:11,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:59:11,173 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [740246458] [2021-10-06 20:59:11,173 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 20:59:11,173 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:59:11,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:59:11,175 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 20:59:11,177 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 20:59:11,482 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 20:59:11,483 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:59:11,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 20:59:11,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:59:11,910 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 20:59:11,910 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:59:12,663 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 20:59:12,663 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:59:12,663 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [740246458] [2021-10-06 20:59:12,663 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [740246458] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:59:12,663 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:59:12,663 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-06 20:59:12,663 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057136489] [2021-10-06 20:59:12,664 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-06 20:59:12,664 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:59:12,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-06 20:59:12,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2021-10-06 20:59:12,665 INFO L87 Difference]: Start difference. First operand 176 states and 520 transitions. Second operand has 19 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:18,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:59:18,753 INFO L93 Difference]: Finished difference Result 520 states and 1655 transitions. [2021-10-06 20:59:18,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-10-06 20:59:18,754 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-06 20:59:18,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:59:18,758 INFO L225 Difference]: With dead ends: 520 [2021-10-06 20:59:18,758 INFO L226 Difference]: Without dead ends: 498 [2021-10-06 20:59:18,759 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 762 ImplicationChecksByTransitivity, 5492.5ms TimeCoverageRelationStatistics Valid=435, Invalid=2427, Unknown=0, NotChecked=0, Total=2862 [2021-10-06 20:59:18,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 498 states. [2021-10-06 20:59:18,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 498 to 202. [2021-10-06 20:59:18,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 201 states have (on average 2.9800995024875623) internal successors, (599), 201 states have internal predecessors, (599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:18,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 599 transitions. [2021-10-06 20:59:18,769 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 599 transitions. Word has length 17 [2021-10-06 20:59:18,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:59:18,769 INFO L470 AbstractCegarLoop]: Abstraction has 202 states and 599 transitions. [2021-10-06 20:59:18,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:18,769 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 599 transitions. [2021-10-06 20:59:18,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 20:59:18,770 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:59:18,770 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:59:18,785 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 20:59:18,983 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 20:59:18,984 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 20:59:18,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:59:18,985 INFO L82 PathProgramCache]: Analyzing trace with hash -428010711, now seen corresponding path program 21 times [2021-10-06 20:59:18,986 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:59:18,986 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [61940966] [2021-10-06 20:59:18,986 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 20:59:18,987 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:59:18,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:59:18,988 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 20:59:18,995 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 20:59:19,298 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-06 20:59:19,299 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:59:19,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 20:59:19,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:59:19,667 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 20:59:19,668 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:59:20,537 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 20:59:20,537 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:59:20,537 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [61940966] [2021-10-06 20:59:20,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [61940966] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:59:20,537 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:59:20,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-06 20:59:20,538 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915968772] [2021-10-06 20:59:20,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-06 20:59:20,538 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:59:20,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-06 20:59:20,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2021-10-06 20:59:20,539 INFO L87 Difference]: Start difference. First operand 202 states and 599 transitions. Second operand has 19 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:27,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:59:27,973 INFO L93 Difference]: Finished difference Result 565 states and 1755 transitions. [2021-10-06 20:59:27,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-10-06 20:59:27,974 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-06 20:59:27,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:59:27,979 INFO L225 Difference]: With dead ends: 565 [2021-10-06 20:59:27,979 INFO L226 Difference]: Without dead ends: 538 [2021-10-06 20:59:27,981 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 1197 ImplicationChecksByTransitivity, 6726.2ms TimeCoverageRelationStatistics Valid=656, Invalid=3376, Unknown=0, NotChecked=0, Total=4032 [2021-10-06 20:59:27,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2021-10-06 20:59:27,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 210. [2021-10-06 20:59:27,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 209 states have (on average 3.0) internal successors, (627), 209 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:27,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 627 transitions. [2021-10-06 20:59:27,991 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 627 transitions. Word has length 17 [2021-10-06 20:59:27,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:59:27,992 INFO L470 AbstractCegarLoop]: Abstraction has 210 states and 627 transitions. [2021-10-06 20:59:27,992 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:27,992 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 627 transitions. [2021-10-06 20:59:27,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 20:59:27,993 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:59:27,993 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:59:28,007 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Forceful destruction successful, exit code 0 [2021-10-06 20:59:28,207 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 20:59:28,207 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 20:59:28,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:59:28,208 INFO L82 PathProgramCache]: Analyzing trace with hash 1291522287, now seen corresponding path program 22 times [2021-10-06 20:59:28,208 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:59:28,208 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1945533922] [2021-10-06 20:59:28,209 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 20:59:28,209 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:59:28,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:59:28,210 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 20:59:28,211 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 20:59:28,498 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 20:59:28,498 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:59:28,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-06 20:59:28,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:59:28,964 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 20:59:28,964 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:59:29,818 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 20:59:29,818 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:59:29,819 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1945533922] [2021-10-06 20:59:29,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1945533922] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:59:29,819 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:59:29,819 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 20:59:29,819 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540350378] [2021-10-06 20:59:29,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 20:59:29,820 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:59:29,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 20:59:29,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2021-10-06 20:59:29,821 INFO L87 Difference]: Start difference. First operand 210 states and 627 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 20:59:34,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:59:34,278 INFO L93 Difference]: Finished difference Result 361 states and 1017 transitions. [2021-10-06 20:59:34,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-10-06 20:59:34,280 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 20:59:34,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:59:34,282 INFO L225 Difference]: With dead ends: 361 [2021-10-06 20:59:34,282 INFO L226 Difference]: Without dead ends: 352 [2021-10-06 20:59:34,283 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 497 ImplicationChecksByTransitivity, 3996.7ms TimeCoverageRelationStatistics Valid=335, Invalid=1827, Unknown=0, NotChecked=0, Total=2162 [2021-10-06 20:59:34,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2021-10-06 20:59:34,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 222. [2021-10-06 20:59:34,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 221 states have (on average 3.0271493212669682) internal successors, (669), 221 states have internal predecessors, (669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:34,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 669 transitions. [2021-10-06 20:59:34,291 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 669 transitions. Word has length 17 [2021-10-06 20:59:34,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:59:34,292 INFO L470 AbstractCegarLoop]: Abstraction has 222 states and 669 transitions. [2021-10-06 20:59:34,292 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 20:59:34,292 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 669 transitions. [2021-10-06 20:59:34,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 20:59:34,293 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:59:34,293 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:59:34,308 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 20:59:34,506 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 20:59:34,507 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 20:59:34,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:59:34,508 INFO L82 PathProgramCache]: Analyzing trace with hash 1225386267, now seen corresponding path program 23 times [2021-10-06 20:59:34,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:59:34,508 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [386048602] [2021-10-06 20:59:34,508 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 20:59:34,509 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:59:34,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:59:34,511 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 20:59:34,517 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 20:59:34,811 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-06 20:59:34,811 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:59:34,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 20:59:34,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:59:35,186 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 20:59:35,186 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:59:35,844 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 20:59:35,844 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:59:35,845 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [386048602] [2021-10-06 20:59:35,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [386048602] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:59:35,845 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:59:35,845 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-06 20:59:35,845 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747846007] [2021-10-06 20:59:35,845 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-06 20:59:35,845 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:59:35,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-06 20:59:35,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2021-10-06 20:59:35,846 INFO L87 Difference]: Start difference. First operand 222 states and 669 transitions. Second operand has 19 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:41,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:59:41,730 INFO L93 Difference]: Finished difference Result 418 states and 1152 transitions. [2021-10-06 20:59:41,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-10-06 20:59:41,731 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-06 20:59:41,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:59:41,734 INFO L225 Difference]: With dead ends: 418 [2021-10-06 20:59:41,735 INFO L226 Difference]: Without dead ends: 404 [2021-10-06 20:59:41,736 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 737 ImplicationChecksByTransitivity, 4877.4ms TimeCoverageRelationStatistics Valid=405, Invalid=2351, Unknown=0, NotChecked=0, Total=2756 [2021-10-06 20:59:41,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2021-10-06 20:59:41,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 242. [2021-10-06 20:59:41,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 241 states have (on average 3.078838174273859) internal successors, (742), 241 states have internal predecessors, (742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:41,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 742 transitions. [2021-10-06 20:59:41,745 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 742 transitions. Word has length 17 [2021-10-06 20:59:41,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:59:41,745 INFO L470 AbstractCegarLoop]: Abstraction has 242 states and 742 transitions. [2021-10-06 20:59:41,746 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:41,746 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 742 transitions. [2021-10-06 20:59:41,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 20:59:41,747 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:59:41,747 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:59:41,757 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Forceful destruction successful, exit code 0 [2021-10-06 20:59:41,948 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 20:59:41,949 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 20:59:41,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:59:41,949 INFO L82 PathProgramCache]: Analyzing trace with hash -1666950257, now seen corresponding path program 24 times [2021-10-06 20:59:41,950 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:59:41,950 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1853786691] [2021-10-06 20:59:41,950 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 20:59:41,950 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:59:41,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:59:41,951 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 20:59:41,953 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 20:59:42,297 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-06 20:59:42,298 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:59:42,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 20:59:42,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:59:42,898 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 20:59:42,898 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:59:43,832 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 20:59:43,832 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:59:43,832 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1853786691] [2021-10-06 20:59:43,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1853786691] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:59:43,833 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:59:43,833 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-06 20:59:43,833 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314247480] [2021-10-06 20:59:43,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-06 20:59:43,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:59:43,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-06 20:59:43,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2021-10-06 20:59:43,834 INFO L87 Difference]: Start difference. First operand 242 states and 742 transitions. Second operand has 19 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:50,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:59:50,109 INFO L93 Difference]: Finished difference Result 523 states and 1541 transitions. [2021-10-06 20:59:50,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-10-06 20:59:50,110 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-06 20:59:50,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:59:50,113 INFO L225 Difference]: With dead ends: 523 [2021-10-06 20:59:50,113 INFO L226 Difference]: Without dead ends: 496 [2021-10-06 20:59:50,114 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 830 ImplicationChecksByTransitivity, 5942.5ms TimeCoverageRelationStatistics Valid=432, Invalid=2648, Unknown=0, NotChecked=0, Total=3080 [2021-10-06 20:59:50,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2021-10-06 20:59:50,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 256. [2021-10-06 20:59:50,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 255 states have (on average 3.0941176470588236) internal successors, (789), 255 states have internal predecessors, (789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:50,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 789 transitions. [2021-10-06 20:59:50,123 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 789 transitions. Word has length 17 [2021-10-06 20:59:50,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:59:50,123 INFO L470 AbstractCegarLoop]: Abstraction has 256 states and 789 transitions. [2021-10-06 20:59:50,124 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:50,124 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 789 transitions. [2021-10-06 20:59:50,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 20:59:50,125 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:59:50,125 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:59:50,141 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 20:59:50,338 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 20:59:50,338 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 20:59:50,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:59:50,339 INFO L82 PathProgramCache]: Analyzing trace with hash 98965129, now seen corresponding path program 25 times [2021-10-06 20:59:50,340 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:59:50,340 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [3723741] [2021-10-06 20:59:50,340 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 20:59:50,340 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:59:50,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:59:50,342 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 20:59:50,346 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 20:59:50,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 20:59:50,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-06 20:59:50,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:59:51,094 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:59:51,094 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:59:51,831 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 20:59:51,831 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:59:51,831 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [3723741] [2021-10-06 20:59:51,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [3723741] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:59:51,831 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:59:51,831 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 20:59:51,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776402229] [2021-10-06 20:59:51,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 20:59:51,832 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:59:51,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 20:59:51,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=323, Unknown=0, NotChecked=0, Total=380 [2021-10-06 20:59:51,833 INFO L87 Difference]: Start difference. First operand 256 states and 789 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 20:59:53,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:59:53,708 INFO L93 Difference]: Finished difference Result 315 states and 892 transitions. [2021-10-06 20:59:53,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-06 20:59:53,709 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 20:59:53,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:59:53,710 INFO L225 Difference]: With dead ends: 315 [2021-10-06 20:59:53,711 INFO L226 Difference]: Without dead ends: 298 [2021-10-06 20:59:53,711 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 1889.7ms TimeCoverageRelationStatistics Valid=129, Invalid=741, Unknown=0, NotChecked=0, Total=870 [2021-10-06 20:59:53,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2021-10-06 20:59:53,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 252. [2021-10-06 20:59:53,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 251 states have (on average 3.0796812749003983) internal successors, (773), 251 states have internal predecessors, (773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:53,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 773 transitions. [2021-10-06 20:59:53,719 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 773 transitions. Word has length 17 [2021-10-06 20:59:53,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:59:53,719 INFO L470 AbstractCegarLoop]: Abstraction has 252 states and 773 transitions. [2021-10-06 20:59:53,719 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 20:59:53,719 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 773 transitions. [2021-10-06 20:59:53,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 20:59:53,720 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:59:53,720 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:59:53,733 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (43)] Ended with exit code 0 [2021-10-06 20:59:53,931 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 20:59:53,932 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 20:59:53,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:59:53,932 INFO L82 PathProgramCache]: Analyzing trace with hash 1818498127, now seen corresponding path program 26 times [2021-10-06 20:59:53,933 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:59:53,933 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [491963352] [2021-10-06 20:59:53,933 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 20:59:53,934 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:59:53,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:59:53,935 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 20:59:53,937 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 20:59:54,323 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 20:59:54,323 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:59:54,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 20:59:54,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:59:54,677 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 20:59:54,677 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:59:55,446 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 20:59:55,446 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:59:55,447 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [491963352] [2021-10-06 20:59:55,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [491963352] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:59:55,447 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:59:55,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-06 20:59:55,448 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088770444] [2021-10-06 20:59:55,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-06 20:59:55,448 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:59:55,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-06 20:59:55,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2021-10-06 20:59:55,450 INFO L87 Difference]: Start difference. First operand 252 states and 773 transitions. Second operand has 19 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:00:04,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:00:04,480 INFO L93 Difference]: Finished difference Result 601 states and 1794 transitions. [2021-10-06 21:00:04,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-10-06 21:00:04,481 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-06 21:00:04,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:00:04,486 INFO L225 Difference]: With dead ends: 601 [2021-10-06 21:00:04,486 INFO L226 Difference]: Without dead ends: 582 [2021-10-06 21:00:04,488 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 1502 ImplicationChecksByTransitivity, 7914.9ms TimeCoverageRelationStatistics Valid=676, Invalid=4016, Unknown=0, NotChecked=0, Total=4692 [2021-10-06 21:00:04,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2021-10-06 21:00:04,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 284. [2021-10-06 21:00:04,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 283 states have (on average 3.1696113074204946) internal successors, (897), 283 states have internal predecessors, (897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:00:04,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 897 transitions. [2021-10-06 21:00:04,500 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 897 transitions. Word has length 17 [2021-10-06 21:00:04,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:00:04,500 INFO L470 AbstractCegarLoop]: Abstraction has 284 states and 897 transitions. [2021-10-06 21:00:04,500 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:00:04,501 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 897 transitions. [2021-10-06 21:00:04,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:00:04,502 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:00:04,502 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:00:04,514 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 21:00:04,710 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 21:00:04,711 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 21:00:04,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:00:04,711 INFO L82 PathProgramCache]: Analyzing trace with hash 1752362107, now seen corresponding path program 27 times [2021-10-06 21:00:04,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:00:04,712 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1317986939] [2021-10-06 21:00:04,712 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:00:04,713 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:00:04,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:00:04,714 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 21:00:04,715 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 21:00:05,107 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-06 21:00:05,107 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:00:05,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 21:00:05,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:00:05,485 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 21:00:05,485 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:00:06,241 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 21:00:06,242 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:00:06,242 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1317986939] [2021-10-06 21:00:06,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1317986939] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:00:06,242 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:00:06,242 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-06 21:00:06,242 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112853629] [2021-10-06 21:00:06,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-06 21:00:06,243 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:00:06,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-06 21:00:06,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2021-10-06 21:00:06,243 INFO L87 Difference]: Start difference. First operand 284 states and 897 transitions. Second operand has 19 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:00:14,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:00:14,892 INFO L93 Difference]: Finished difference Result 604 states and 1807 transitions. [2021-10-06 21:00:14,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-10-06 21:00:14,893 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-06 21:00:14,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:00:14,898 INFO L225 Difference]: With dead ends: 604 [2021-10-06 21:00:14,898 INFO L226 Difference]: Without dead ends: 590 [2021-10-06 21:00:14,899 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 1643 ImplicationChecksByTransitivity, 7607.3ms TimeCoverageRelationStatistics Valid=775, Invalid=4481, Unknown=0, NotChecked=0, Total=5256 [2021-10-06 21:00:14,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2021-10-06 21:00:14,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 276. [2021-10-06 21:00:14,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 275 states have (on average 3.138181818181818) internal successors, (863), 275 states have internal predecessors, (863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:00:14,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 863 transitions. [2021-10-06 21:00:14,910 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 863 transitions. Word has length 17 [2021-10-06 21:00:14,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:00:14,910 INFO L470 AbstractCegarLoop]: Abstraction has 276 states and 863 transitions. [2021-10-06 21:00:14,910 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:00:14,911 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 863 transitions. [2021-10-06 21:00:14,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:00:14,912 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:00:14,912 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:00:14,925 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (45)] Ended with exit code 0 [2021-10-06 21:00:15,122 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 21:00:15,123 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 21:00:15,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:00:15,124 INFO L82 PathProgramCache]: Analyzing trace with hash -944884497, now seen corresponding path program 28 times [2021-10-06 21:00:15,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:00:15,124 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2128983314] [2021-10-06 21:00:15,125 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:00:15,125 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:00:15,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:00:15,126 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 21:00:15,127 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 21:00:15,495 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:00:15,495 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:00:15,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-06 21:00:15,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:00:15,964 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 21:00:15,965 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:00:16,883 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 21:00:16,884 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:00:16,884 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2128983314] [2021-10-06 21:00:16,884 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2128983314] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:00:16,884 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:00:16,884 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:00:16,884 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801369708] [2021-10-06 21:00:16,885 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:00:16,885 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:00:16,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:00:16,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:00:16,886 INFO L87 Difference]: Start difference. First operand 276 states and 863 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 21:00:21,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:00:21,159 INFO L93 Difference]: Finished difference Result 427 states and 1227 transitions. [2021-10-06 21:00:21,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-06 21:00:21,160 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 21:00:21,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:00:21,162 INFO L225 Difference]: With dead ends: 427 [2021-10-06 21:00:21,162 INFO L226 Difference]: Without dead ends: 414 [2021-10-06 21:00:21,163 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 518 ImplicationChecksByTransitivity, 3964.9ms TimeCoverageRelationStatistics Valid=390, Invalid=1772, Unknown=0, NotChecked=0, Total=2162 [2021-10-06 21:00:21,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2021-10-06 21:00:21,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 312. [2021-10-06 21:00:21,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 311 states have (on average 3.1864951768488745) internal successors, (991), 311 states have internal predecessors, (991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:00:21,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 991 transitions. [2021-10-06 21:00:21,173 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 991 transitions. Word has length 17 [2021-10-06 21:00:21,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:00:21,174 INFO L470 AbstractCegarLoop]: Abstraction has 312 states and 991 transitions. [2021-10-06 21:00:21,174 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 21:00:21,174 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 991 transitions. [2021-10-06 21:00:21,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:00:21,175 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:00:21,175 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:00:21,193 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 21:00:21,389 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 21:00:21,390 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 21:00:21,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:00:21,390 INFO L82 PathProgramCache]: Analyzing trace with hash -1011020517, now seen corresponding path program 29 times [2021-10-06 21:00:21,391 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:00:21,391 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1194793645] [2021-10-06 21:00:21,391 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:00:21,391 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:00:21,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:00:21,393 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 21:00:21,394 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 21:00:21,767 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-06 21:00:21,768 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:00:21,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-06 21:00:21,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:00:22,120 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:00:22,121 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:00:22,892 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 21:00:22,892 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:00:22,892 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1194793645] [2021-10-06 21:00:22,892 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1194793645] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:00:22,892 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:00:22,892 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-06 21:00:22,892 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926157317] [2021-10-06 21:00:22,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-06 21:00:22,893 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:00:22,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-06 21:00:22,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2021-10-06 21:00:22,893 INFO L87 Difference]: Start difference. First operand 312 states and 991 transitions. Second operand has 19 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:00:30,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:00:30,696 INFO L93 Difference]: Finished difference Result 512 states and 1478 transitions. [2021-10-06 21:00:30,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-10-06 21:00:30,697 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-06 21:00:30,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:00:30,699 INFO L225 Difference]: With dead ends: 512 [2021-10-06 21:00:30,699 INFO L226 Difference]: Without dead ends: 496 [2021-10-06 21:00:30,700 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 1194 ImplicationChecksByTransitivity, 7111.5ms TimeCoverageRelationStatistics Valid=720, Invalid=3186, Unknown=0, NotChecked=0, Total=3906 [2021-10-06 21:00:30,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2021-10-06 21:00:30,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 322. [2021-10-06 21:00:30,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 321 states have (on average 3.221183800623053) internal successors, (1034), 321 states have internal predecessors, (1034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:00:30,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 1034 transitions. [2021-10-06 21:00:30,713 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 1034 transitions. Word has length 17 [2021-10-06 21:00:30,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:00:30,713 INFO L470 AbstractCegarLoop]: Abstraction has 322 states and 1034 transitions. [2021-10-06 21:00:30,714 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:00:30,714 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 1034 transitions. [2021-10-06 21:00:30,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:00:30,715 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:00:30,715 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:00:30,731 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 21:00:30,928 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 21:00:30,929 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 21:00:30,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:00:30,930 INFO L82 PathProgramCache]: Analyzing trace with hash 706728543, now seen corresponding path program 30 times [2021-10-06 21:00:30,930 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:00:30,930 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [161218315] [2021-10-06 21:00:30,930 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:00:30,930 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:00:30,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:00:30,932 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 21:00:30,933 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 21:00:31,325 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-06 21:00:31,325 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:00:31,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-06 21:00:31,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:00:32,065 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:00:32,066 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:00:33,250 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 21:00:33,250 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:00:33,250 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [161218315] [2021-10-06 21:00:33,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [161218315] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:00:33,250 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:00:33,251 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:00:33,251 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033202894] [2021-10-06 21:00:33,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:00:33,251 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:00:33,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:00:33,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=290, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:00:33,252 INFO L87 Difference]: Start difference. First operand 322 states and 1034 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 21:00:39,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:00:39,388 INFO L93 Difference]: Finished difference Result 463 states and 1337 transitions. [2021-10-06 21:00:39,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-06 21:00:39,390 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 21:00:39,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:00:39,392 INFO L225 Difference]: With dead ends: 463 [2021-10-06 21:00:39,392 INFO L226 Difference]: Without dead ends: 450 [2021-10-06 21:00:39,393 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 534 ImplicationChecksByTransitivity, 6148.4ms TimeCoverageRelationStatistics Valid=525, Invalid=1827, Unknown=0, NotChecked=0, Total=2352 [2021-10-06 21:00:39,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2021-10-06 21:00:39,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 316. [2021-10-06 21:00:39,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 315 states have (on average 3.2285714285714286) internal successors, (1017), 315 states have internal predecessors, (1017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:00:39,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 1017 transitions. [2021-10-06 21:00:39,403 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 1017 transitions. Word has length 17 [2021-10-06 21:00:39,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:00:39,403 INFO L470 AbstractCegarLoop]: Abstraction has 316 states and 1017 transitions. [2021-10-06 21:00:39,403 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 21:00:39,403 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 1017 transitions. [2021-10-06 21:00:39,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:00:39,404 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:00:39,405 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:00:39,419 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 21:00:39,618 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 21:00:39,619 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 21:00:39,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:00:39,619 INFO L82 PathProgramCache]: Analyzing trace with hash -1877625445, now seen corresponding path program 31 times [2021-10-06 21:00:39,620 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:00:39,620 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [690557976] [2021-10-06 21:00:39,620 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:00:39,620 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:00:39,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:00:39,622 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 21:00:39,624 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 21:00:39,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:00:39,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-06 21:00:40,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:00:40,440 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 21:00:40,440 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:00:41,504 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 21:00:41,504 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:00:41,505 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [690557976] [2021-10-06 21:00:41,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [690557976] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:00:41,505 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:00:41,505 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:00:41,505 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781353121] [2021-10-06 21:00:41,505 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:00:41,506 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:00:41,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:00:41,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:00:41,506 INFO L87 Difference]: Start difference. First operand 316 states and 1017 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 21:00:47,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:00:47,302 INFO L93 Difference]: Finished difference Result 439 states and 1269 transitions. [2021-10-06 21:00:47,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-10-06 21:00:47,303 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 21:00:47,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:00:47,305 INFO L225 Difference]: With dead ends: 439 [2021-10-06 21:00:47,305 INFO L226 Difference]: Without dead ends: 428 [2021-10-06 21:00:47,306 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 635 ImplicationChecksByTransitivity, 5849.7ms TimeCoverageRelationStatistics Valid=556, Invalid=2096, Unknown=0, NotChecked=0, Total=2652 [2021-10-06 21:00:47,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2021-10-06 21:00:47,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 318. [2021-10-06 21:00:47,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 317 states have (on average 3.1987381703470033) internal successors, (1014), 317 states have internal predecessors, (1014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:00:47,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 1014 transitions. [2021-10-06 21:00:47,316 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 1014 transitions. Word has length 17 [2021-10-06 21:00:47,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:00:47,317 INFO L470 AbstractCegarLoop]: Abstraction has 318 states and 1014 transitions. [2021-10-06 21:00:47,317 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 21:00:47,317 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 1014 transitions. [2021-10-06 21:00:47,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:00:47,318 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:00:47,318 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:00:47,332 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 21:00:47,532 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 21:00:47,532 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 21:00:47,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:00:47,533 INFO L82 PathProgramCache]: Analyzing trace with hash 1665244975, now seen corresponding path program 32 times [2021-10-06 21:00:47,534 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:00:47,534 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [93992469] [2021-10-06 21:00:47,534 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:00:47,534 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:00:47,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:00:47,542 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 21:00:47,543 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 21:00:47,967 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:00:47,967 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:00:47,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-06 21:00:47,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:00:48,464 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:00:48,464 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:00:49,446 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 21:00:49,447 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:00:49,447 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [93992469] [2021-10-06 21:00:49,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [93992469] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:00:49,447 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:00:49,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:00:49,448 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506749138] [2021-10-06 21:00:49,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:00:49,448 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:00:49,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:00:49,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:00:49,449 INFO L87 Difference]: Start difference. First operand 318 states and 1014 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 21:00:57,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:00:57,475 INFO L93 Difference]: Finished difference Result 611 states and 1739 transitions. [2021-10-06 21:00:57,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-10-06 21:00:57,477 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 21:00:57,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:00:57,480 INFO L225 Difference]: With dead ends: 611 [2021-10-06 21:00:57,480 INFO L226 Difference]: Without dead ends: 606 [2021-10-06 21:00:57,481 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 828 ImplicationChecksByTransitivity, 7487.2ms TimeCoverageRelationStatistics Valid=595, Invalid=2711, Unknown=0, NotChecked=0, Total=3306 [2021-10-06 21:00:57,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 606 states. [2021-10-06 21:00:57,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 606 to 380. [2021-10-06 21:00:57,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 379 states have (on average 3.300791556728232) internal successors, (1251), 379 states have internal predecessors, (1251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:00:57,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 1251 transitions. [2021-10-06 21:00:57,500 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 1251 transitions. Word has length 17 [2021-10-06 21:00:57,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:00:57,500 INFO L470 AbstractCegarLoop]: Abstraction has 380 states and 1251 transitions. [2021-10-06 21:00:57,500 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 21:00:57,501 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 1251 transitions. [2021-10-06 21:00:57,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:00:57,502 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:00:57,502 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:00:57,518 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (50)] Forceful destruction successful, exit code 0 [2021-10-06 21:00:57,715 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 21:00:57,716 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 21:00:57,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:00:57,717 INFO L82 PathProgramCache]: Analyzing trace with hash 1599108955, now seen corresponding path program 33 times [2021-10-06 21:00:57,717 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:00:57,717 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1775356959] [2021-10-06 21:00:57,718 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:00:57,718 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:00:57,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:00:57,719 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 21:00:57,720 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 21:00:58,164 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-06 21:00:58,164 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:00:58,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-06 21:00:58,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:00:58,462 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-06 21:00:58,463 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:00:58,866 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-06 21:00:58,866 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:00:58,866 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1775356959] [2021-10-06 21:00:58,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1775356959] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:00:58,866 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:00:58,867 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-06 21:00:58,867 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552210969] [2021-10-06 21:00:58,867 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-06 21:00:58,867 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:00:58,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-06 21:00:58,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-10-06 21:00:58,867 INFO L87 Difference]: Start difference. First operand 380 states and 1251 transitions. Second operand has 11 states, 10 states have (on average 2.5) internal successors, (25), 10 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:00:59,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:00:59,154 INFO L93 Difference]: Finished difference Result 413 states and 1343 transitions. [2021-10-06 21:00:59,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:00:59,154 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.5) internal successors, (25), 10 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-06 21:00:59,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:00:59,157 INFO L225 Difference]: With dead ends: 413 [2021-10-06 21:00:59,157 INFO L226 Difference]: Without dead ends: 396 [2021-10-06 21:00:59,158 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 334.3ms TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-10-06 21:00:59,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2021-10-06 21:00:59,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 324. [2021-10-06 21:00:59,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 323 states have (on average 2.981424148606811) internal successors, (963), 323 states have internal predecessors, (963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:00:59,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 963 transitions. [2021-10-06 21:00:59,167 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 963 transitions. Word has length 17 [2021-10-06 21:00:59,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:00:59,168 INFO L470 AbstractCegarLoop]: Abstraction has 324 states and 963 transitions. [2021-10-06 21:00:59,168 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.5) internal successors, (25), 10 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:00:59,168 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 963 transitions. [2021-10-06 21:00:59,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:00:59,169 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:00:59,169 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:00:59,185 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 21:00:59,382 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 21:00:59,383 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 21:00:59,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:00:59,384 INFO L82 PathProgramCache]: Analyzing trace with hash 1784398895, now seen corresponding path program 34 times [2021-10-06 21:00:59,384 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:00:59,384 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2108388875] [2021-10-06 21:00:59,385 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:00:59,385 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:00:59,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:00:59,386 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 21:00:59,387 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 21:00:59,801 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:00:59,801 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:00:59,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-06 21:00:59,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:01:00,233 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 21:01:00,233 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:01:01,039 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 21:01:01,039 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:01:01,039 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2108388875] [2021-10-06 21:01:01,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2108388875] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:01:01,040 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:01:01,040 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:01:01,040 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630521019] [2021-10-06 21:01:01,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:01:01,040 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:01:01,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:01:01,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:01:01,041 INFO L87 Difference]: Start difference. First operand 324 states and 963 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 21:01:03,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:01:03,632 INFO L93 Difference]: Finished difference Result 445 states and 1238 transitions. [2021-10-06 21:01:03,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-06 21:01:03,633 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 21:01:03,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:01:03,637 INFO L225 Difference]: With dead ends: 445 [2021-10-06 21:01:03,637 INFO L226 Difference]: Without dead ends: 412 [2021-10-06 21:01:03,637 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 2407.5ms TimeCoverageRelationStatistics Valid=167, Invalid=1023, Unknown=0, NotChecked=0, Total=1190 [2021-10-06 21:01:03,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2021-10-06 21:01:03,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 362. [2021-10-06 21:01:03,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 361 states have (on average 2.9529085872576175) internal successors, (1066), 361 states have internal predecessors, (1066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:03,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 1066 transitions. [2021-10-06 21:01:03,646 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 1066 transitions. Word has length 17 [2021-10-06 21:01:03,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:01:03,647 INFO L470 AbstractCegarLoop]: Abstraction has 362 states and 1066 transitions. [2021-10-06 21:01:03,647 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 21:01:03,647 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 1066 transitions. [2021-10-06 21:01:03,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:01:03,648 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:01:03,648 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:01:03,662 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 21:01:03,861 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 21:01:03,862 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 21:01:03,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:01:03,863 INFO L82 PathProgramCache]: Analyzing trace with hash -359701361, now seen corresponding path program 35 times [2021-10-06 21:01:03,863 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:01:03,863 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [667192333] [2021-10-06 21:01:03,864 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:01:03,864 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:01:03,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:01:03,865 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 21:01:03,872 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 21:01:04,303 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-06 21:01:04,304 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:01:04,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:01:04,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:01:04,616 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 21:01:04,616 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:01:05,247 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 21:01:05,248 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:01:05,248 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [667192333] [2021-10-06 21:01:05,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [667192333] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:01:05,248 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:01:05,248 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-06 21:01:05,248 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978560984] [2021-10-06 21:01:05,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-06 21:01:05,249 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:01:05,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-06 21:01:05,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2021-10-06 21:01:05,250 INFO L87 Difference]: Start difference. First operand 362 states and 1066 transitions. Second operand has 19 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 18 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:11,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:01:11,250 INFO L93 Difference]: Finished difference Result 734 states and 2031 transitions. [2021-10-06 21:01:11,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-10-06 21:01:11,251 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 18 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-06 21:01:11,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:01:11,256 INFO L225 Difference]: With dead ends: 734 [2021-10-06 21:01:11,256 INFO L226 Difference]: Without dead ends: 712 [2021-10-06 21:01:11,257 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 780 ImplicationChecksByTransitivity, 4687.5ms TimeCoverageRelationStatistics Valid=406, Invalid=2456, Unknown=0, NotChecked=0, Total=2862 [2021-10-06 21:01:11,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 712 states. [2021-10-06 21:01:11,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 712 to 384. [2021-10-06 21:01:11,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 383 states have (on average 2.9738903394255876) internal successors, (1139), 383 states have internal predecessors, (1139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:11,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 1139 transitions. [2021-10-06 21:01:11,270 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 1139 transitions. Word has length 17 [2021-10-06 21:01:11,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:01:11,270 INFO L470 AbstractCegarLoop]: Abstraction has 384 states and 1139 transitions. [2021-10-06 21:01:11,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 18 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:11,270 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 1139 transitions. [2021-10-06 21:01:11,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:01:11,271 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:01:11,271 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:01:11,284 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 21:01:11,478 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 21:01:11,478 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 21:01:11,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:01:11,479 INFO L82 PathProgramCache]: Analyzing trace with hash -425837381, now seen corresponding path program 36 times [2021-10-06 21:01:11,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:01:11,479 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1131846640] [2021-10-06 21:01:11,480 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:01:11,480 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:01:11,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:01:11,481 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 21:01:11,494 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 21:01:11,965 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-06 21:01:11,966 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:01:11,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-06 21:01:11,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:01:12,344 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 21:01:12,344 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:01:13,265 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 21:01:13,266 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:01:13,266 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1131846640] [2021-10-06 21:01:13,266 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1131846640] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:01:13,266 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:01:13,266 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-06 21:01:13,267 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254719395] [2021-10-06 21:01:13,267 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-06 21:01:13,267 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:01:13,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-06 21:01:13,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2021-10-06 21:01:13,268 INFO L87 Difference]: Start difference. First operand 384 states and 1139 transitions. Second operand has 19 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 18 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:19,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:01:19,930 INFO L93 Difference]: Finished difference Result 754 states and 2130 transitions. [2021-10-06 21:01:19,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-10-06 21:01:19,931 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 18 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-06 21:01:19,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:01:19,936 INFO L225 Difference]: With dead ends: 754 [2021-10-06 21:01:19,936 INFO L226 Difference]: Without dead ends: 742 [2021-10-06 21:01:19,937 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 902 ImplicationChecksByTransitivity, 6097.3ms TimeCoverageRelationStatistics Valid=689, Invalid=2281, Unknown=0, NotChecked=0, Total=2970 [2021-10-06 21:01:19,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 742 states. [2021-10-06 21:01:19,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 742 to 386. [2021-10-06 21:01:19,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 385 states have (on average 2.981818181818182) internal successors, (1148), 385 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:19,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 1148 transitions. [2021-10-06 21:01:19,948 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 1148 transitions. Word has length 17 [2021-10-06 21:01:19,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:01:19,948 INFO L470 AbstractCegarLoop]: Abstraction has 386 states and 1148 transitions. [2021-10-06 21:01:19,948 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 18 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:19,949 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 1148 transitions. [2021-10-06 21:01:19,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:01:19,950 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:01:19,950 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:01:19,965 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 21:01:20,163 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 21:01:20,163 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 21:01:20,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:01:20,164 INFO L82 PathProgramCache]: Analyzing trace with hash 1291911679, now seen corresponding path program 37 times [2021-10-06 21:01:20,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:01:20,165 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [940845330] [2021-10-06 21:01:20,165 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:01:20,166 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:01:20,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:01:20,167 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 21:01:20,168 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 21:01:20,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:01:20,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-06 21:01:20,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:01:21,124 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 21:01:21,124 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:01:21,953 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 21:01:21,953 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:01:21,953 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [940845330] [2021-10-06 21:01:21,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [940845330] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:01:21,953 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:01:21,953 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:01:21,954 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896255852] [2021-10-06 21:01:21,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:01:21,954 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:01:21,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:01:21,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:01:21,954 INFO L87 Difference]: Start difference. First operand 386 states and 1148 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 21:01:23,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:01:23,605 INFO L93 Difference]: Finished difference Result 541 states and 1601 transitions. [2021-10-06 21:01:23,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-06 21:01:23,606 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 21:01:23,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:01:23,610 INFO L225 Difference]: With dead ends: 541 [2021-10-06 21:01:23,610 INFO L226 Difference]: Without dead ends: 532 [2021-10-06 21:01:23,610 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 1695.8ms TimeCoverageRelationStatistics Valid=116, Invalid=696, Unknown=0, NotChecked=0, Total=812 [2021-10-06 21:01:23,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2021-10-06 21:01:23,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 386. [2021-10-06 21:01:23,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 385 states have (on average 2.9766233766233765) internal successors, (1146), 385 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:23,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 1146 transitions. [2021-10-06 21:01:23,621 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 1146 transitions. Word has length 17 [2021-10-06 21:01:23,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:01:23,621 INFO L470 AbstractCegarLoop]: Abstraction has 386 states and 1146 transitions. [2021-10-06 21:01:23,622 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 21:01:23,622 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 1146 transitions. [2021-10-06 21:01:23,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:01:23,623 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:01:23,623 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:01:23,636 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (55)] Ended with exit code 0 [2021-10-06 21:01:23,833 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 21:01:23,834 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 21:01:23,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:01:23,835 INFO L82 PathProgramCache]: Analyzing trace with hash -1292442309, now seen corresponding path program 38 times [2021-10-06 21:01:23,835 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:01:23,835 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1038810127] [2021-10-06 21:01:23,835 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:01:23,836 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:01:23,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:01:23,837 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 21:01:23,839 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 21:01:24,328 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:01:24,328 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:01:24,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-06 21:01:24,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:01:24,932 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 21:01:24,932 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:01:25,821 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 21:01:25,821 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:01:25,821 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1038810127] [2021-10-06 21:01:25,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1038810127] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:01:25,822 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:01:25,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-06 21:01:25,822 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130971750] [2021-10-06 21:01:25,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-06 21:01:25,823 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:01:25,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-06 21:01:25,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2021-10-06 21:01:25,824 INFO L87 Difference]: Start difference. First operand 386 states and 1146 transitions. Second operand has 19 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 18 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:32,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:01:32,219 INFO L93 Difference]: Finished difference Result 710 states and 1936 transitions. [2021-10-06 21:01:32,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-10-06 21:01:32,220 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 18 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-06 21:01:32,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:01:32,223 INFO L225 Difference]: With dead ends: 710 [2021-10-06 21:01:32,224 INFO L226 Difference]: Without dead ends: 694 [2021-10-06 21:01:32,224 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 698 ImplicationChecksByTransitivity, 6195.6ms TimeCoverageRelationStatistics Valid=455, Invalid=2095, Unknown=0, NotChecked=0, Total=2550 [2021-10-06 21:01:32,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2021-10-06 21:01:32,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 380. [2021-10-06 21:01:32,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 379 states have (on average 2.9577836411609497) internal successors, (1121), 379 states have internal predecessors, (1121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:32,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 1121 transitions. [2021-10-06 21:01:32,234 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 1121 transitions. Word has length 17 [2021-10-06 21:01:32,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:01:32,235 INFO L470 AbstractCegarLoop]: Abstraction has 380 states and 1121 transitions. [2021-10-06 21:01:32,235 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 18 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:32,235 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 1121 transitions. [2021-10-06 21:01:32,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:01:32,236 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:01:32,236 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:01:32,247 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (56)] Forceful destruction successful, exit code 0 [2021-10-06 21:01:32,436 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 21:01:32,437 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 21:01:32,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:01:32,437 INFO L82 PathProgramCache]: Analyzing trace with hash -252956157, now seen corresponding path program 39 times [2021-10-06 21:01:32,438 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:01:32,438 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1604211083] [2021-10-06 21:01:32,438 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:01:32,438 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:01:32,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:01:32,440 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 21:01:32,441 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 21:01:32,937 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-06 21:01:32,938 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:01:32,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-06 21:01:32,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:01:33,370 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 21:01:33,371 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:01:34,296 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 21:01:34,296 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:01:34,296 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1604211083] [2021-10-06 21:01:34,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1604211083] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:01:34,297 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:01:34,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:01:34,297 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869625131] [2021-10-06 21:01:34,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:01:34,297 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:01:34,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:01:34,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:01:34,298 INFO L87 Difference]: Start difference. First operand 380 states and 1121 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 21:01:39,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:01:39,026 INFO L93 Difference]: Finished difference Result 682 states and 1860 transitions. [2021-10-06 21:01:39,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-06 21:01:39,027 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 21:01:39,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:01:39,031 INFO L225 Difference]: With dead ends: 682 [2021-10-06 21:01:39,031 INFO L226 Difference]: Without dead ends: 656 [2021-10-06 21:01:39,032 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 523 ImplicationChecksByTransitivity, 4604.8ms TimeCoverageRelationStatistics Valid=405, Invalid=1757, Unknown=0, NotChecked=0, Total=2162 [2021-10-06 21:01:39,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states. [2021-10-06 21:01:39,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 366. [2021-10-06 21:01:39,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 366 states, 365 states have (on average 2.9205479452054797) internal successors, (1066), 365 states have internal predecessors, (1066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:39,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 1066 transitions. [2021-10-06 21:01:39,054 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 1066 transitions. Word has length 17 [2021-10-06 21:01:39,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:01:39,054 INFO L470 AbstractCegarLoop]: Abstraction has 366 states and 1066 transitions. [2021-10-06 21:01:39,054 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 21:01:39,054 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 1066 transitions. [2021-10-06 21:01:39,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:01:39,055 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:01:39,055 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:01:39,069 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 21:01:39,269 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 21:01:39,269 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 21:01:39,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:01:39,270 INFO L82 PathProgramCache]: Analyzing trace with hash 1704695205, now seen corresponding path program 40 times [2021-10-06 21:01:39,271 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:01:39,271 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2142356134] [2021-10-06 21:01:39,271 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:01:39,271 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:01:39,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:01:39,273 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 21:01:39,274 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 21:01:39,734 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:01:39,734 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:01:39,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-06 21:01:39,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:01:40,186 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:01:40,186 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:01:41,218 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 21:01:41,218 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:01:41,218 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2142356134] [2021-10-06 21:01:41,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2142356134] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:01:41,218 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:01:41,218 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:01:41,218 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104112760] [2021-10-06 21:01:41,219 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:01:41,219 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:01:41,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:01:41,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=288, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:01:41,219 INFO L87 Difference]: Start difference. First operand 366 states and 1066 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 21:01:47,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:01:47,152 INFO L93 Difference]: Finished difference Result 628 states and 1707 transitions. [2021-10-06 21:01:47,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-10-06 21:01:47,153 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 21:01:47,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:01:47,156 INFO L225 Difference]: With dead ends: 628 [2021-10-06 21:01:47,156 INFO L226 Difference]: Without dead ends: 610 [2021-10-06 21:01:47,157 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 743 ImplicationChecksByTransitivity, 5706.8ms TimeCoverageRelationStatistics Valid=729, Invalid=2027, Unknown=0, NotChecked=0, Total=2756 [2021-10-06 21:01:47,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2021-10-06 21:01:47,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 336. [2021-10-06 21:01:47,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 335 states have (on average 2.8805970149253732) internal successors, (965), 335 states have internal predecessors, (965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:47,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 965 transitions. [2021-10-06 21:01:47,169 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 965 transitions. Word has length 17 [2021-10-06 21:01:47,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:01:47,169 INFO L470 AbstractCegarLoop]: Abstraction has 336 states and 965 transitions. [2021-10-06 21:01:47,169 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 21:01:47,169 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 965 transitions. [2021-10-06 21:01:47,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:01:47,174 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:01:47,175 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:01:47,187 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (58)] Ended with exit code 0 [2021-10-06 21:01:47,383 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 21:01:47,384 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 21:01:47,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:01:47,385 INFO L82 PathProgramCache]: Analyzing trace with hash -643285169, now seen corresponding path program 41 times [2021-10-06 21:01:47,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:01:47,386 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1094327302] [2021-10-06 21:01:47,386 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:01:47,386 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:01:47,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:01:47,387 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 21:01:47,389 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 21:01:47,908 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-06 21:01:47,908 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:01:47,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:01:47,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:01:48,191 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 21:01:48,192 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:01:48,775 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 21:01:48,775 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:01:48,776 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1094327302] [2021-10-06 21:01:48,776 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1094327302] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:01:48,776 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:01:48,776 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 16 [2021-10-06 21:01:48,776 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199269693] [2021-10-06 21:01:48,776 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-06 21:01:48,777 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:01:48,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-06 21:01:48,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2021-10-06 21:01:48,777 INFO L87 Difference]: Start difference. First operand 336 states and 965 transitions. Second operand has 18 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 17 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:50,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:01:50,474 INFO L93 Difference]: Finished difference Result 445 states and 1220 transitions. [2021-10-06 21:01:50,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-06 21:01:50,476 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 17 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-06 21:01:50,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:01:50,477 INFO L225 Difference]: With dead ends: 445 [2021-10-06 21:01:50,477 INFO L226 Difference]: Without dead ends: 432 [2021-10-06 21:01:50,478 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 1613.7ms TimeCoverageRelationStatistics Valid=159, Invalid=771, Unknown=0, NotChecked=0, Total=930 [2021-10-06 21:01:50,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2021-10-06 21:01:50,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 326. [2021-10-06 21:01:50,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 325 states have (on average 2.830769230769231) internal successors, (920), 325 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:50,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 920 transitions. [2021-10-06 21:01:50,485 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 920 transitions. Word has length 17 [2021-10-06 21:01:50,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:01:50,485 INFO L470 AbstractCegarLoop]: Abstraction has 326 states and 920 transitions. [2021-10-06 21:01:50,485 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 17 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:50,485 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 920 transitions. [2021-10-06 21:01:50,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:01:50,486 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:01:50,486 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:01:50,499 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 21:01:50,687 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 21:01:50,688 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 21:01:50,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:01:50,688 INFO L82 PathProgramCache]: Analyzing trace with hash 2085998223, now seen corresponding path program 42 times [2021-10-06 21:01:50,689 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:01:50,689 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [80716252] [2021-10-06 21:01:50,690 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:01:50,690 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:01:50,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:01:50,693 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 21:01:50,697 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 21:01:51,302 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-06 21:01:51,303 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:01:51,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 21:01:51,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:01:51,649 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 21:01:51,649 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:01:52,361 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 21:01:52,362 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:01:52,362 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [80716252] [2021-10-06 21:01:52,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [80716252] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:01:52,362 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:01:52,363 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-06 21:01:52,363 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25823312] [2021-10-06 21:01:52,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-06 21:01:52,363 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:01:52,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-06 21:01:52,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2021-10-06 21:01:52,364 INFO L87 Difference]: Start difference. First operand 326 states and 920 transitions. Second operand has 19 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 18 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:55,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:01:55,892 INFO L93 Difference]: Finished difference Result 491 states and 1322 transitions. [2021-10-06 21:01:55,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-06 21:01:55,893 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 18 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-06 21:01:55,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:01:55,894 INFO L225 Difference]: With dead ends: 491 [2021-10-06 21:01:55,894 INFO L226 Difference]: Without dead ends: 460 [2021-10-06 21:01:55,895 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 371 ImplicationChecksByTransitivity, 3262.7ms TimeCoverageRelationStatistics Valid=299, Invalid=1341, Unknown=0, NotChecked=0, Total=1640 [2021-10-06 21:01:55,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2021-10-06 21:01:55,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 332. [2021-10-06 21:01:55,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 331 states have (on average 2.836858006042296) internal successors, (939), 331 states have internal predecessors, (939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:55,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 939 transitions. [2021-10-06 21:01:55,902 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 939 transitions. Word has length 17 [2021-10-06 21:01:55,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:01:55,902 INFO L470 AbstractCegarLoop]: Abstraction has 332 states and 939 transitions. [2021-10-06 21:01:55,903 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 18 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:55,903 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 939 transitions. [2021-10-06 21:01:55,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:01:55,904 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:01:55,904 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:01:55,915 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (60)] Forceful destruction successful, exit code 0 [2021-10-06 21:01:56,106 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 21:01:56,106 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 21:01:56,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:01:56,107 INFO L82 PathProgramCache]: Analyzing trace with hash -443053687, now seen corresponding path program 43 times [2021-10-06 21:01:56,107 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:01:56,107 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1562200651] [2021-10-06 21:01:56,108 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:01:56,108 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:01:56,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:01:56,109 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 21:01:56,111 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 21:01:56,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:01:56,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-06 21:01:56,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:01:57,067 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:01:57,067 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:01:58,100 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 21:01:58,100 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:01:58,100 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1562200651] [2021-10-06 21:01:58,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1562200651] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:01:58,100 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:01:58,100 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:01:58,100 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284788799] [2021-10-06 21:01:58,101 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:01:58,101 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:01:58,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:01:58,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=290, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:01:58,101 INFO L87 Difference]: Start difference. First operand 332 states and 939 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 21:02:02,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:02:02,422 INFO L93 Difference]: Finished difference Result 535 states and 1412 transitions. [2021-10-06 21:02:02,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-06 21:02:02,423 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 21:02:02,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:02:02,425 INFO L225 Difference]: With dead ends: 535 [2021-10-06 21:02:02,425 INFO L226 Difference]: Without dead ends: 514 [2021-10-06 21:02:02,425 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 424 ImplicationChecksByTransitivity, 4311.4ms TimeCoverageRelationStatistics Valid=467, Invalid=1513, Unknown=0, NotChecked=0, Total=1980 [2021-10-06 21:02:02,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2021-10-06 21:02:02,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 326. [2021-10-06 21:02:02,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 325 states have (on average 2.8461538461538463) internal successors, (925), 325 states have internal predecessors, (925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:02,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 925 transitions. [2021-10-06 21:02:02,432 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 925 transitions. Word has length 17 [2021-10-06 21:02:02,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:02:02,432 INFO L470 AbstractCegarLoop]: Abstraction has 326 states and 925 transitions. [2021-10-06 21:02:02,432 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 21:02:02,433 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 925 transitions. [2021-10-06 21:02:02,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:02:02,434 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:02:02,434 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:02:02,447 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 21:02:02,644 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 21:02:02,644 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 21:02:02,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:02:02,645 INFO L82 PathProgramCache]: Analyzing trace with hash 34582629, now seen corresponding path program 44 times [2021-10-06 21:02:02,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:02:02,645 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [738835525] [2021-10-06 21:02:02,646 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:02:02,646 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:02:02,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:02:02,647 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 21:02:02,648 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 21:02:03,199 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:02:03,199 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:02:03,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-06 21:02:03,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:02:03,334 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:02:03,334 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:02:03,501 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:02:03,501 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:02:03,501 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [738835525] [2021-10-06 21:02:03,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [738835525] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:02:03,501 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:02:03,502 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2021-10-06 21:02:03,502 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416141635] [2021-10-06 21:02:03,502 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 21:02:03,502 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:02:03,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 21:02:03,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:02:03,503 INFO L87 Difference]: Start difference. First operand 326 states and 925 transitions. Second operand has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:03,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:02:03,975 INFO L93 Difference]: Finished difference Result 514 states and 1393 transitions. [2021-10-06 21:02:03,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-06 21:02:03,976 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:02:03,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:02:03,977 INFO L225 Difference]: With dead ends: 514 [2021-10-06 21:02:03,977 INFO L226 Difference]: Without dead ends: 514 [2021-10-06 21:02:03,978 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 371.5ms TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2021-10-06 21:02:03,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2021-10-06 21:02:03,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 308. [2021-10-06 21:02:03,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 307 states have (on average 2.817589576547231) internal successors, (865), 307 states have internal predecessors, (865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:03,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 865 transitions. [2021-10-06 21:02:03,985 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 865 transitions. Word has length 18 [2021-10-06 21:02:03,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:02:03,985 INFO L470 AbstractCegarLoop]: Abstraction has 308 states and 865 transitions. [2021-10-06 21:02:03,985 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:03,986 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 865 transitions. [2021-10-06 21:02:03,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:02:03,987 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:02:03,987 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:02:04,001 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 21:02:04,201 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 21:02:04,201 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 21:02:04,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:02:04,202 INFO L82 PathProgramCache]: Analyzing trace with hash 1700317893, now seen corresponding path program 45 times [2021-10-06 21:02:04,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:02:04,203 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1318919355] [2021-10-06 21:02:04,203 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:02:04,203 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:02:04,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:02:04,204 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 21:02:04,205 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 21:02:04,775 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-06 21:02:04,775 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:02:04,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-06 21:02:04,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:02:05,051 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-06 21:02:05,051 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:02:05,414 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-06 21:02:05,414 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:02:05,414 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1318919355] [2021-10-06 21:02:05,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1318919355] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:02:05,415 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:02:05,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-06 21:02:05,415 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838181078] [2021-10-06 21:02:05,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-06 21:02:05,415 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:02:05,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-06 21:02:05,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-10-06 21:02:05,415 INFO L87 Difference]: Start difference. First operand 308 states and 865 transitions. Second operand has 11 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:05,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:02:05,641 INFO L93 Difference]: Finished difference Result 397 states and 1106 transitions. [2021-10-06 21:02:05,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:02:05,642 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:02:05,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:02:05,642 INFO L225 Difference]: With dead ends: 397 [2021-10-06 21:02:05,642 INFO L226 Difference]: Without dead ends: 190 [2021-10-06 21:02:05,642 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 273.1ms TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-10-06 21:02:05,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2021-10-06 21:02:05,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 176. [2021-10-06 21:02:05,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 175 states have (on average 2.2114285714285713) internal successors, (387), 175 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:05,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 387 transitions. [2021-10-06 21:02:05,646 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 387 transitions. Word has length 18 [2021-10-06 21:02:05,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:02:05,646 INFO L470 AbstractCegarLoop]: Abstraction has 176 states and 387 transitions. [2021-10-06 21:02:05,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:05,646 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 387 transitions. [2021-10-06 21:02:05,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:02:05,647 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:02:05,647 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:02:05,658 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 21:02:05,847 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 21:02:05,848 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 21:02:05,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:02:05,848 INFO L82 PathProgramCache]: Analyzing trace with hash -1633902721, now seen corresponding path program 46 times [2021-10-06 21:02:05,849 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:02:05,849 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [746773979] [2021-10-06 21:02:05,849 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:02:05,850 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:02:05,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:02:05,851 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 21:02:05,852 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 21:02:06,367 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:02:06,367 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:02:06,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-06 21:02:06,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:02:06,433 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-06 21:02:06,434 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:02:06,597 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-06 21:02:06,597 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:02:06,597 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [746773979] [2021-10-06 21:02:06,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [746773979] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:02:06,598 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:02:06,598 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 10 [2021-10-06 21:02:06,598 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933842065] [2021-10-06 21:02:06,598 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-06 21:02:06,598 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:02:06,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-06 21:02:06,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-06 21:02:06,599 INFO L87 Difference]: Start difference. First operand 176 states and 387 transitions. Second operand has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:06,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:02:06,927 INFO L93 Difference]: Finished difference Result 204 states and 431 transitions. [2021-10-06 21:02:06,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-06 21:02:06,928 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:02:06,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:02:06,928 INFO L225 Difference]: With dead ends: 204 [2021-10-06 21:02:06,928 INFO L226 Difference]: Without dead ends: 198 [2021-10-06 21:02:06,928 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 214.0ms TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:02:06,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2021-10-06 21:02:06,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 172. [2021-10-06 21:02:06,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 171 states have (on average 2.2046783625730995) internal successors, (377), 171 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:06,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 377 transitions. [2021-10-06 21:02:06,932 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 377 transitions. Word has length 18 [2021-10-06 21:02:06,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:02:06,932 INFO L470 AbstractCegarLoop]: Abstraction has 172 states and 377 transitions. [2021-10-06 21:02:06,932 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:06,932 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 377 transitions. [2021-10-06 21:02:06,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:02:06,933 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:02:06,933 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:02:06,944 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (64)] Ended with exit code 0 [2021-10-06 21:02:07,133 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 21:02:07,134 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 21:02:07,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:02:07,135 INFO L82 PathProgramCache]: Analyzing trace with hash -1289964258, now seen corresponding path program 47 times [2021-10-06 21:02:07,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:02:07,135 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [951851857] [2021-10-06 21:02:07,136 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:02:07,136 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:02:07,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:02:07,137 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 21:02:07,140 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 21:02:07,662 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-06 21:02:07,662 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:02:07,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-06 21:02:07,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:02:07,746 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:02:07,746 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:02:07,981 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:02:07,982 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:02:07,982 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [951851857] [2021-10-06 21:02:07,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [951851857] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:02:07,982 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:02:07,982 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 13 [2021-10-06 21:02:07,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963121984] [2021-10-06 21:02:07,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-06 21:02:07,983 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:02:07,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-06 21:02:07,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2021-10-06 21:02:07,984 INFO L87 Difference]: Start difference. First operand 172 states and 377 transitions. Second operand has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 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 21:02:08,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:02:08,589 INFO L93 Difference]: Finished difference Result 202 states and 421 transitions. [2021-10-06 21:02:08,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-06 21:02:08,590 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:02:08,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:02:08,590 INFO L225 Difference]: With dead ends: 202 [2021-10-06 21:02:08,590 INFO L226 Difference]: Without dead ends: 194 [2021-10-06 21:02:08,591 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 532.5ms TimeCoverageRelationStatistics Valid=107, Invalid=355, Unknown=0, NotChecked=0, Total=462 [2021-10-06 21:02:08,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2021-10-06 21:02:08,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 162. [2021-10-06 21:02:08,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 161 states have (on average 2.1925465838509317) internal successors, (353), 161 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:08,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 353 transitions. [2021-10-06 21:02:08,595 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 353 transitions. Word has length 18 [2021-10-06 21:02:08,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:02:08,595 INFO L470 AbstractCegarLoop]: Abstraction has 162 states and 353 transitions. [2021-10-06 21:02:08,595 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 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 21:02:08,596 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 353 transitions. [2021-10-06 21:02:08,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:02:08,596 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:02:08,596 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:02:08,607 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (65)] Forceful destruction successful, exit code 0 [2021-10-06 21:02:08,799 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 21:02:08,799 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 21:02:08,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:02:08,800 INFO L82 PathProgramCache]: Analyzing trace with hash -247724699, now seen corresponding path program 48 times [2021-10-06 21:02:08,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:02:08,801 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1485472342] [2021-10-06 21:02:08,801 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:02:08,801 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:02:08,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:02:08,802 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 21:02:08,804 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 21:02:09,378 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-06 21:02:09,378 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:02:09,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-06 21:02:09,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:02:09,508 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:02:09,508 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:02:09,728 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:02:09,728 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:02:09,729 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1485472342] [2021-10-06 21:02:09,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1485472342] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:02:09,729 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:02:09,729 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-10-06 21:02:09,729 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307401863] [2021-10-06 21:02:09,729 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-06 21:02:09,730 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:02:09,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-06 21:02:09,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-10-06 21:02:09,730 INFO L87 Difference]: Start difference. First operand 162 states and 353 transitions. Second operand has 13 states, 13 states have (on average 2.0) internal successors, (26), 13 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:10,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:02:10,616 INFO L93 Difference]: Finished difference Result 248 states and 529 transitions. [2021-10-06 21:02:10,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-06 21:02:10,617 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.0) internal successors, (26), 13 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:02:10,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:02:10,618 INFO L225 Difference]: With dead ends: 248 [2021-10-06 21:02:10,618 INFO L226 Difference]: Without dead ends: 248 [2021-10-06 21:02:10,618 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 792.3ms TimeCoverageRelationStatistics Valid=143, Invalid=507, Unknown=0, NotChecked=0, Total=650 [2021-10-06 21:02:10,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2021-10-06 21:02:10,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 160. [2021-10-06 21:02:10,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 159 states have (on average 2.1761006289308176) internal successors, (346), 159 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:10,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 346 transitions. [2021-10-06 21:02:10,621 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 346 transitions. Word has length 18 [2021-10-06 21:02:10,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:02:10,621 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 346 transitions. [2021-10-06 21:02:10,621 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.0) internal successors, (26), 13 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:10,622 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 346 transitions. [2021-10-06 21:02:10,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:02:10,622 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:02:10,622 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:02:10,634 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 21:02:10,824 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 21:02:10,825 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 21:02:10,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:02:10,825 INFO L82 PathProgramCache]: Analyzing trace with hash -530319682, now seen corresponding path program 49 times [2021-10-06 21:02:10,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:02:10,826 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [939880078] [2021-10-06 21:02:10,826 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:02:10,826 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:02:10,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:02:10,827 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 21:02:10,828 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 21:02:11,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:02:11,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-06 21:02:11,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:02:11,467 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:02:11,467 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:02:11,686 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:02:11,687 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:02:11,687 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [939880078] [2021-10-06 21:02:11,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [939880078] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:02:11,687 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:02:11,687 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 13 [2021-10-06 21:02:11,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544089314] [2021-10-06 21:02:11,688 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-06 21:02:11,688 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:02:11,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-06 21:02:11,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2021-10-06 21:02:11,689 INFO L87 Difference]: Start difference. First operand 160 states and 346 transitions. Second operand has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 13 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:12,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:02:12,566 INFO L93 Difference]: Finished difference Result 194 states and 387 transitions. [2021-10-06 21:02:12,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-06 21:02:12,567 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 13 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:02:12,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:02:12,567 INFO L225 Difference]: With dead ends: 194 [2021-10-06 21:02:12,568 INFO L226 Difference]: Without dead ends: 176 [2021-10-06 21:02:12,568 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 774.4ms TimeCoverageRelationStatistics Valid=145, Invalid=505, Unknown=0, NotChecked=0, Total=650 [2021-10-06 21:02:12,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2021-10-06 21:02:12,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 136. [2021-10-06 21:02:12,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 135 states have (on average 2.1185185185185187) internal successors, (286), 135 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:12,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 286 transitions. [2021-10-06 21:02:12,571 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 286 transitions. Word has length 18 [2021-10-06 21:02:12,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:02:12,571 INFO L470 AbstractCegarLoop]: Abstraction has 136 states and 286 transitions. [2021-10-06 21:02:12,571 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 13 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:12,571 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 286 transitions. [2021-10-06 21:02:12,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:02:12,572 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:02:12,572 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:02:12,589 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 21:02:12,786 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 21:02:12,787 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 21:02:12,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:02:12,787 INFO L82 PathProgramCache]: Analyzing trace with hash -297599035, now seen corresponding path program 50 times [2021-10-06 21:02:12,788 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:02:12,788 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [735056792] [2021-10-06 21:02:12,788 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:02:12,788 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:02:12,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:02:12,789 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 21:02:12,791 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 21:02:13,386 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:02:13,387 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:02:13,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-06 21:02:13,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:02:13,505 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:02:13,505 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:02:13,693 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:02:13,693 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:02:13,693 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [735056792] [2021-10-06 21:02:13,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [735056792] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:02:13,694 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:02:13,694 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-10-06 21:02:13,694 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532639724] [2021-10-06 21:02:13,694 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-06 21:02:13,694 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:02:13,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-06 21:02:13,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-10-06 21:02:13,695 INFO L87 Difference]: Start difference. First operand 136 states and 286 transitions. Second operand has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 13 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:14,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:02:14,158 INFO L93 Difference]: Finished difference Result 186 states and 375 transitions. [2021-10-06 21:02:14,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-06 21:02:14,159 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 13 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:02:14,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:02:14,159 INFO L225 Difference]: With dead ends: 186 [2021-10-06 21:02:14,160 INFO L226 Difference]: Without dead ends: 186 [2021-10-06 21:02:14,160 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 425.2ms TimeCoverageRelationStatistics Valid=93, Invalid=327, Unknown=0, NotChecked=0, Total=420 [2021-10-06 21:02:14,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2021-10-06 21:02:14,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 130. [2021-10-06 21:02:14,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 129 states have (on average 2.116279069767442) internal successors, (273), 129 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:14,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 273 transitions. [2021-10-06 21:02:14,163 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 273 transitions. Word has length 18 [2021-10-06 21:02:14,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:02:14,164 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 273 transitions. [2021-10-06 21:02:14,164 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 13 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:14,164 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 273 transitions. [2021-10-06 21:02:14,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-06 21:02:14,164 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:02:14,165 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:02:14,176 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (68)] Ended with exit code 0 [2021-10-06 21:02:14,367 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 21:02:14,368 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 21:02:14,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:02:14,368 INFO L82 PathProgramCache]: Analyzing trace with hash -2093944158, now seen corresponding path program 51 times [2021-10-06 21:02:14,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:02:14,369 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2026863222] [2021-10-06 21:02:14,369 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:02:14,369 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:02:14,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:02:14,371 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 21:02:14,372 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 21:02:15,025 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-06 21:02:15,025 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:02:15,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-06 21:02:15,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:02:15,307 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:02:15,308 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:02:15,592 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:02:15,593 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:02:15,593 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2026863222] [2021-10-06 21:02:15,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2026863222] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-06 21:02:15,593 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-06 21:02:15,593 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2021-10-06 21:02:15,594 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112517714] [2021-10-06 21:02:15,594 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 21:02:15,594 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:02:15,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 21:02:15,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-06 21:02:15,595 INFO L87 Difference]: Start difference. First operand 130 states and 273 transitions. Second operand has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:15,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:02:15,690 INFO L93 Difference]: Finished difference Result 147 states and 302 transitions. [2021-10-06 21:02:15,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:02:15,690 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-06 21:02:15,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:02:15,691 INFO L225 Difference]: With dead ends: 147 [2021-10-06 21:02:15,691 INFO L226 Difference]: Without dead ends: 112 [2021-10-06 21:02:15,691 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 210.1ms TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-06 21:02:15,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2021-10-06 21:02:15,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 108. [2021-10-06 21:02:15,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 107 states have (on average 1.9906542056074767) internal successors, (213), 107 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:15,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 213 transitions. [2021-10-06 21:02:15,694 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 213 transitions. Word has length 19 [2021-10-06 21:02:15,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:02:15,695 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 213 transitions. [2021-10-06 21:02:15,695 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:15,695 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 213 transitions. [2021-10-06 21:02:15,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-06 21:02:15,695 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:02:15,695 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:02:15,707 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 21:02:15,898 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 21:02:15,899 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 21:02:15,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:02:15,899 INFO L82 PathProgramCache]: Analyzing trace with hash 332908040, now seen corresponding path program 52 times [2021-10-06 21:02:15,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:02:15,900 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [798133916] [2021-10-06 21:02:15,900 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:02:15,901 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:02:15,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:02:15,902 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 21:02:15,903 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 21:02:16,490 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:02:16,490 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:02:16,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-06 21:02:16,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:02:17,238 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:02:17,238 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:02:18,812 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:02:18,812 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:02:18,812 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [798133916] [2021-10-06 21:02:18,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [798133916] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:02:18,812 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:02:18,812 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 22 [2021-10-06 21:02:18,812 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26523495] [2021-10-06 21:02:18,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-06 21:02:18,813 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:02:18,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-06 21:02:18,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=425, Unknown=0, NotChecked=0, Total=552 [2021-10-06 21:02:18,814 INFO L87 Difference]: Start difference. First operand 108 states and 213 transitions. Second operand has 24 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:26,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:02:26,920 INFO L93 Difference]: Finished difference Result 214 states and 413 transitions. [2021-10-06 21:02:26,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-10-06 21:02:26,921 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-06 21:02:26,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:02:26,922 INFO L225 Difference]: With dead ends: 214 [2021-10-06 21:02:26,922 INFO L226 Difference]: Without dead ends: 184 [2021-10-06 21:02:26,923 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 1016 ImplicationChecksByTransitivity, 8464.5ms TimeCoverageRelationStatistics Valid=921, Invalid=2739, Unknown=0, NotChecked=0, Total=3660 [2021-10-06 21:02:26,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2021-10-06 21:02:26,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 108. [2021-10-06 21:02:26,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 107 states have (on average 1.9813084112149533) internal successors, (212), 107 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:26,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 212 transitions. [2021-10-06 21:02:26,926 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 212 transitions. Word has length 19 [2021-10-06 21:02:26,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:02:26,926 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 212 transitions. [2021-10-06 21:02:26,926 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:26,926 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 212 transitions. [2021-10-06 21:02:26,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-06 21:02:26,927 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:02:26,927 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:02:26,938 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 21:02:27,127 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 21:02:27,128 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 21:02:27,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:02:27,128 INFO L82 PathProgramCache]: Analyzing trace with hash 1703400450, now seen corresponding path program 53 times [2021-10-06 21:02:27,129 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:02:27,129 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1062994167] [2021-10-06 21:02:27,129 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:02:27,129 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:02:27,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:02:27,131 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 21:02:27,132 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 21:02:27,705 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-06 21:02:27,705 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:02:27,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-06 21:02:27,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:02:28,144 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:02:28,144 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:02:29,169 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:02:29,169 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:02:29,169 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1062994167] [2021-10-06 21:02:29,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1062994167] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:02:29,169 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:02:29,169 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2021-10-06 21:02:29,170 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261336302] [2021-10-06 21:02:29,170 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-06 21:02:29,170 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:02:29,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-06 21:02:29,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=438, Unknown=0, NotChecked=0, Total=506 [2021-10-06 21:02:29,170 INFO L87 Difference]: Start difference. First operand 108 states and 212 transitions. Second operand has 23 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 22 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:30,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:02:30,713 INFO L93 Difference]: Finished difference Result 147 states and 275 transitions. [2021-10-06 21:02:30,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-06 21:02:30,714 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 22 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-06 21:02:30,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:02:30,715 INFO L225 Difference]: With dead ends: 147 [2021-10-06 21:02:30,715 INFO L226 Difference]: Without dead ends: 126 [2021-10-06 21:02:30,715 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 1670.4ms TimeCoverageRelationStatistics Valid=128, Invalid=802, Unknown=0, NotChecked=0, Total=930 [2021-10-06 21:02:30,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2021-10-06 21:02:30,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 104. [2021-10-06 21:02:30,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 103 states have (on average 2.0194174757281553) internal successors, (208), 103 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:30,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 208 transitions. [2021-10-06 21:02:30,717 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 208 transitions. Word has length 19 [2021-10-06 21:02:30,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:02:30,717 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 208 transitions. [2021-10-06 21:02:30,717 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 22 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:30,718 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 208 transitions. [2021-10-06 21:02:30,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-06 21:02:30,718 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:02:30,718 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:02:30,729 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (71)] Ended with exit code 0 [2021-10-06 21:02:30,918 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 21:02:30,919 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 21:02:30,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:02:30,920 INFO L82 PathProgramCache]: Analyzing trace with hash -873817786, now seen corresponding path program 54 times [2021-10-06 21:02:30,920 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:02:30,920 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1496052978] [2021-10-06 21:02:30,921 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:02:30,921 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:02:30,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:02:30,922 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 21:02:30,924 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 21:02:31,577 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-06 21:02:31,577 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:02:31,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-06 21:02:31,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:02:31,893 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-06 21:02:31,893 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:02:32,983 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:02:32,984 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:02:32,984 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1496052978] [2021-10-06 21:02:32,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1496052978] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:02:32,984 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:02:32,984 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11] total 19 [2021-10-06 21:02:32,985 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414424086] [2021-10-06 21:02:32,985 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-06 21:02:32,985 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:02:32,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-06 21:02:32,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2021-10-06 21:02:32,986 INFO L87 Difference]: Start difference. First operand 104 states and 208 transitions. Second operand has 21 states, 20 states have (on average 1.8) internal successors, (36), 20 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:38,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:02:38,818 INFO L93 Difference]: Finished difference Result 175 states and 337 transitions. [2021-10-06 21:02:38,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-06 21:02:38,819 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.8) internal successors, (36), 20 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-06 21:02:38,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:02:38,820 INFO L225 Difference]: With dead ends: 175 [2021-10-06 21:02:38,820 INFO L226 Difference]: Without dead ends: 164 [2021-10-06 21:02:38,820 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 493 ImplicationChecksByTransitivity, 5679.6ms TimeCoverageRelationStatistics Valid=467, Invalid=1789, Unknown=0, NotChecked=0, Total=2256 [2021-10-06 21:02:38,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2021-10-06 21:02:38,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 108. [2021-10-06 21:02:38,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 107 states have (on average 2.05607476635514) internal successors, (220), 107 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:38,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 220 transitions. [2021-10-06 21:02:38,824 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 220 transitions. Word has length 19 [2021-10-06 21:02:38,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:02:38,824 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 220 transitions. [2021-10-06 21:02:38,824 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 1.8) internal successors, (36), 20 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:38,825 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 220 transitions. [2021-10-06 21:02:38,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-06 21:02:38,825 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:02:38,825 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:02:38,838 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 21:02:39,030 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 21:02:39,031 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 21:02:39,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:02:39,031 INFO L82 PathProgramCache]: Analyzing trace with hash 836795522, now seen corresponding path program 55 times [2021-10-06 21:02:39,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:02:39,032 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [436657911] [2021-10-06 21:02:39,032 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:02:39,032 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:02:39,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:02:39,034 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 21:02:39,035 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 21:02:39,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:02:39,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-06 21:02:39,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:02:40,062 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:02:40,063 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:02:41,306 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:02:41,306 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:02:41,306 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [436657911] [2021-10-06 21:02:41,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [436657911] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:02:41,307 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:02:41,307 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2021-10-06 21:02:41,307 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443285653] [2021-10-06 21:02:41,307 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-06 21:02:41,307 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:02:41,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-06 21:02:41,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=387, Unknown=0, NotChecked=0, Total=506 [2021-10-06 21:02:41,308 INFO L87 Difference]: Start difference. First operand 108 states and 220 transitions. Second operand has 23 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 22 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:45,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:02:45,466 INFO L93 Difference]: Finished difference Result 169 states and 316 transitions. [2021-10-06 21:02:45,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-06 21:02:45,467 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 22 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-06 21:02:45,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:02:45,468 INFO L225 Difference]: With dead ends: 169 [2021-10-06 21:02:45,468 INFO L226 Difference]: Without dead ends: 156 [2021-10-06 21:02:45,468 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 421 ImplicationChecksByTransitivity, 4465.8ms TimeCoverageRelationStatistics Valid=438, Invalid=1368, Unknown=0, NotChecked=0, Total=1806 [2021-10-06 21:02:45,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2021-10-06 21:02:45,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 106. [2021-10-06 21:02:45,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 105 states have (on average 2.0476190476190474) internal successors, (215), 105 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:45,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 215 transitions. [2021-10-06 21:02:45,470 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 215 transitions. Word has length 19 [2021-10-06 21:02:45,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:02:45,471 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 215 transitions. [2021-10-06 21:02:45,471 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 22 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:45,471 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 215 transitions. [2021-10-06 21:02:45,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-06 21:02:45,471 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:02:45,471 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:02:45,483 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (73)] Forceful destruction successful, exit code 0 [2021-10-06 21:02:45,673 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 21:02:45,673 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 21:02:45,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:02:45,674 INFO L82 PathProgramCache]: Analyzing trace with hash -1968766778, now seen corresponding path program 56 times [2021-10-06 21:02:45,675 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:02:45,675 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2101594682] [2021-10-06 21:02:45,675 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:02:45,675 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:02:45,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:02:45,677 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 21:02:45,679 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 21:02:46,333 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:02:46,333 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:02:46,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-06 21:02:46,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:02:46,708 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:02:46,708 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:02:47,863 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:02:47,864 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:02:47,864 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2101594682] [2021-10-06 21:02:47,864 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2101594682] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:02:47,864 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:02:47,864 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2021-10-06 21:02:47,864 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318328009] [2021-10-06 21:02:47,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-06 21:02:47,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:02:47,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-06 21:02:47,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=420, Unknown=0, NotChecked=0, Total=506 [2021-10-06 21:02:47,865 INFO L87 Difference]: Start difference. First operand 106 states and 215 transitions. Second operand has 23 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 22 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:51,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:02:51,338 INFO L93 Difference]: Finished difference Result 161 states and 302 transitions. [2021-10-06 21:02:51,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-06 21:02:51,339 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 22 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-06 21:02:51,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:02:51,339 INFO L225 Difference]: With dead ends: 161 [2021-10-06 21:02:51,339 INFO L226 Difference]: Without dead ends: 148 [2021-10-06 21:02:51,339 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 389 ImplicationChecksByTransitivity, 3694.9ms TimeCoverageRelationStatistics Valid=338, Invalid=1642, Unknown=0, NotChecked=0, Total=1980 [2021-10-06 21:02:51,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2021-10-06 21:02:51,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 104. [2021-10-06 21:02:51,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 103 states have (on average 2.0388349514563107) internal successors, (210), 103 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:51,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 210 transitions. [2021-10-06 21:02:51,342 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 210 transitions. Word has length 19 [2021-10-06 21:02:51,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:02:51,342 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 210 transitions. [2021-10-06 21:02:51,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 22 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:51,342 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 210 transitions. [2021-10-06 21:02:51,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-06 21:02:51,342 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:02:51,342 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:02:51,353 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (74)] Ended with exit code 0 [2021-10-06 21:02:51,543 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 21:02:51,543 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 21:02:51,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:02:51,544 INFO L82 PathProgramCache]: Analyzing trace with hash 1161529272, now seen corresponding path program 57 times [2021-10-06 21:02:51,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:02:51,544 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1852794189] [2021-10-06 21:02:51,545 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:02:51,545 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:02:51,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:02:51,546 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 21:02:51,547 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 21:02:52,234 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-06 21:02:52,235 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:02:52,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-06 21:02:52,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:02:52,521 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:02:52,521 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:02:52,920 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:02:52,920 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:02:52,920 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1852794189] [2021-10-06 21:02:52,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1852794189] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:02:52,921 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:02:52,921 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-06 21:02:52,921 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29056733] [2021-10-06 21:02:52,922 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-06 21:02:52,922 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:02:52,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-06 21:02:52,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-10-06 21:02:52,923 INFO L87 Difference]: Start difference. First operand 104 states and 210 transitions. Second operand has 11 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:53,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:02:53,086 INFO L93 Difference]: Finished difference Result 117 states and 228 transitions. [2021-10-06 21:02:53,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:02:53,087 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-06 21:02:53,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:02:53,087 INFO L225 Difference]: With dead ends: 117 [2021-10-06 21:02:53,088 INFO L226 Difference]: Without dead ends: 94 [2021-10-06 21:02:53,088 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 274.3ms TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-10-06 21:02:53,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-10-06 21:02:53,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2021-10-06 21:02:53,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 93 states have (on average 1.946236559139785) internal successors, (181), 93 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:53,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 181 transitions. [2021-10-06 21:02:53,092 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 181 transitions. Word has length 19 [2021-10-06 21:02:53,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:02:53,093 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 181 transitions. [2021-10-06 21:02:53,093 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:53,093 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 181 transitions. [2021-10-06 21:02:53,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-06 21:02:53,093 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:02:53,093 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:02:53,105 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 21:02:53,294 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 21:02:53,294 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 21:02:53,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:02:53,295 INFO L82 PathProgramCache]: Analyzing trace with hash 1784329340, now seen corresponding path program 58 times [2021-10-06 21:02:53,295 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:02:53,296 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [777465886] [2021-10-06 21:02:53,296 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:02:53,296 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:02:53,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:02:53,297 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 21:02:53,298 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 21:02:53,919 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:02:53,919 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:02:53,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-06 21:02:53,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:02:54,515 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:02:54,515 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:02:55,566 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:02:55,566 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:02:55,566 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [777465886] [2021-10-06 21:02:55,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [777465886] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:02:55,567 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:02:55,567 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 22 [2021-10-06 21:02:55,567 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139160168] [2021-10-06 21:02:55,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-06 21:02:55,567 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:02:55,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-06 21:02:55,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=486, Unknown=0, NotChecked=0, Total=552 [2021-10-06 21:02:55,568 INFO L87 Difference]: Start difference. First operand 94 states and 181 transitions. Second operand has 24 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:57,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:02:57,183 INFO L93 Difference]: Finished difference Result 129 states and 234 transitions. [2021-10-06 21:02:57,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-06 21:02:57,184 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-06 21:02:57,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:02:57,184 INFO L225 Difference]: With dead ends: 129 [2021-10-06 21:02:57,184 INFO L226 Difference]: Without dead ends: 116 [2021-10-06 21:02:57,184 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 2053.3ms TimeCoverageRelationStatistics Valid=111, Invalid=759, Unknown=0, NotChecked=0, Total=870 [2021-10-06 21:02:57,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-10-06 21:02:57,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 96. [2021-10-06 21:02:57,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 95 states have (on average 1.9789473684210526) internal successors, (188), 95 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:57,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 188 transitions. [2021-10-06 21:02:57,187 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 188 transitions. Word has length 19 [2021-10-06 21:02:57,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:02:57,187 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 188 transitions. [2021-10-06 21:02:57,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:57,187 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 188 transitions. [2021-10-06 21:02:57,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-06 21:02:57,188 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:02:57,188 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:02:57,200 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 21:02:57,389 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 21:02:57,390 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 21:02:57,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:02:57,390 INFO L82 PathProgramCache]: Analyzing trace with hash -351338316, now seen corresponding path program 59 times [2021-10-06 21:02:57,391 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:02:57,391 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1682716095] [2021-10-06 21:02:57,391 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:02:57,391 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:02:57,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:02:57,393 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 21:02:57,394 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 21:02:58,027 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-06 21:02:58,027 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:02:58,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-06 21:02:58,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:02:58,628 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:02:58,628 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:02:59,656 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:02:59,657 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:02:59,657 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1682716095] [2021-10-06 21:02:59,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1682716095] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:02:59,657 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:02:59,657 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2021-10-06 21:02:59,657 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254253416] [2021-10-06 21:02:59,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-06 21:02:59,658 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:02:59,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-06 21:02:59,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=448, Unknown=0, NotChecked=0, Total=506 [2021-10-06 21:02:59,659 INFO L87 Difference]: Start difference. First operand 96 states and 188 transitions. Second operand has 23 states, 22 states have (on average 1.5) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:01,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:03:01,613 INFO L93 Difference]: Finished difference Result 139 states and 249 transitions. [2021-10-06 21:03:01,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-06 21:03:01,614 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.5) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-06 21:03:01,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:03:01,615 INFO L225 Difference]: With dead ends: 139 [2021-10-06 21:03:01,615 INFO L226 Difference]: Without dead ends: 124 [2021-10-06 21:03:01,615 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 2631.7ms TimeCoverageRelationStatistics Valid=123, Invalid=747, Unknown=0, NotChecked=0, Total=870 [2021-10-06 21:03:01,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-10-06 21:03:01,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 96. [2021-10-06 21:03:01,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 95 states have (on average 1.9578947368421054) internal successors, (186), 95 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:01,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 186 transitions. [2021-10-06 21:03:01,618 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 186 transitions. Word has length 19 [2021-10-06 21:03:01,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:03:01,619 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 186 transitions. [2021-10-06 21:03:01,619 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 1.5) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:01,619 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 186 transitions. [2021-10-06 21:03:01,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-06 21:03:01,619 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:03:01,619 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:03:01,631 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 21:03:01,819 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 21:03:01,820 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 21:03:01,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:03:01,821 INFO L82 PathProgramCache]: Analyzing trace with hash 1544113685, now seen corresponding path program 60 times [2021-10-06 21:03:01,821 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:03:01,821 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1523386904] [2021-10-06 21:03:01,821 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:03:01,822 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:03:01,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:03:01,823 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 21:03:01,825 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 21:03:02,516 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-06 21:03:02,517 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:03:02,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-06 21:03:02,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:03:02,699 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:03:02,699 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:03:02,944 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:03:02,945 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:03:02,945 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1523386904] [2021-10-06 21:03:02,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1523386904] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:03:02,945 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:03:02,945 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 15 [2021-10-06 21:03:02,946 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919050070] [2021-10-06 21:03:02,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-06 21:03:02,946 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:03:02,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-06 21:03:02,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2021-10-06 21:03:02,947 INFO L87 Difference]: Start difference. First operand 96 states and 186 transitions. Second operand has 15 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 15 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:03,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:03:03,496 INFO L93 Difference]: Finished difference Result 142 states and 257 transitions. [2021-10-06 21:03:03,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-06 21:03:03,496 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 15 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-06 21:03:03,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:03:03,497 INFO L225 Difference]: With dead ends: 142 [2021-10-06 21:03:03,497 INFO L226 Difference]: Without dead ends: 142 [2021-10-06 21:03:03,497 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 557.0ms TimeCoverageRelationStatistics Valid=91, Invalid=371, Unknown=0, NotChecked=0, Total=462 [2021-10-06 21:03:03,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2021-10-06 21:03:03,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 94. [2021-10-06 21:03:03,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 93 states have (on average 1.946236559139785) internal successors, (181), 93 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:03,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 181 transitions. [2021-10-06 21:03:03,499 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 181 transitions. Word has length 20 [2021-10-06 21:03:03,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:03:03,499 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 181 transitions. [2021-10-06 21:03:03,499 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 15 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:03,499 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 181 transitions. [2021-10-06 21:03:03,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-06 21:03:03,500 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:03:03,500 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:03:03,512 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 21:03:03,700 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 21:03:03,701 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 21:03:03,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:03:03,701 INFO L82 PathProgramCache]: Analyzing trace with hash -1105729686, now seen corresponding path program 61 times [2021-10-06 21:03:03,702 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:03:03,702 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [993743980] [2021-10-06 21:03:03,702 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:03:03,702 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:03:03,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:03:03,704 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 21:03:03,707 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 21:03:04,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:03:04,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-06 21:03:04,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:03:04,548 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:03:04,548 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:03:04,865 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:03:04,866 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:03:04,866 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [993743980] [2021-10-06 21:03:04,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [993743980] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:03:04,866 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:03:04,866 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 16 [2021-10-06 21:03:04,867 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791813351] [2021-10-06 21:03:04,867 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:03:04,867 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:03:04,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:03:04,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:03:04,868 INFO L87 Difference]: Start difference. First operand 94 states and 181 transitions. Second operand has 16 states, 16 states have (on average 1.625) internal successors, (26), 16 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:05,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:03:05,510 INFO L93 Difference]: Finished difference Result 118 states and 217 transitions. [2021-10-06 21:03:05,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-06 21:03:05,511 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.625) internal successors, (26), 16 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-06 21:03:05,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:03:05,512 INFO L225 Difference]: With dead ends: 118 [2021-10-06 21:03:05,512 INFO L226 Difference]: Without dead ends: 110 [2021-10-06 21:03:05,512 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 710.8ms TimeCoverageRelationStatistics Valid=88, Invalid=464, Unknown=0, NotChecked=0, Total=552 [2021-10-06 21:03:05,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-10-06 21:03:05,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 94. [2021-10-06 21:03:05,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 93 states have (on average 1.946236559139785) internal successors, (181), 93 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:05,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 181 transitions. [2021-10-06 21:03:05,514 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 181 transitions. Word has length 20 [2021-10-06 21:03:05,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:03:05,514 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 181 transitions. [2021-10-06 21:03:05,514 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.625) internal successors, (26), 16 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:05,514 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 181 transitions. [2021-10-06 21:03:05,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-06 21:03:05,515 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:03:05,515 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:03:05,529 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 21:03:05,715 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 21:03:05,716 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 21:03:05,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:03:05,716 INFO L82 PathProgramCache]: Analyzing trace with hash 1711450324, now seen corresponding path program 62 times [2021-10-06 21:03:05,717 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:03:05,717 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1016665003] [2021-10-06 21:03:05,717 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:03:05,717 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:03:05,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:03:05,719 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 21:03:05,720 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 21:03:06,438 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:03:06,438 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:03:06,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-06 21:03:06,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:03:06,631 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:03:06,632 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:03:06,935 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:03:06,935 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:03:06,935 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1016665003] [2021-10-06 21:03:06,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1016665003] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:03:06,936 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:03:06,936 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 16 [2021-10-06 21:03:06,936 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150549426] [2021-10-06 21:03:06,936 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:03:06,937 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:03:06,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:03:06,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:03:06,937 INFO L87 Difference]: Start difference. First operand 94 states and 181 transitions. Second operand has 16 states, 16 states have (on average 1.625) internal successors, (26), 16 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:07,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:03:07,407 INFO L93 Difference]: Finished difference Result 112 states and 208 transitions. [2021-10-06 21:03:07,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-06 21:03:07,407 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.625) internal successors, (26), 16 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-06 21:03:07,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:03:07,408 INFO L225 Difference]: With dead ends: 112 [2021-10-06 21:03:07,408 INFO L226 Difference]: Without dead ends: 104 [2021-10-06 21:03:07,408 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 576.4ms TimeCoverageRelationStatistics Valid=82, Invalid=380, Unknown=0, NotChecked=0, Total=462 [2021-10-06 21:03:07,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2021-10-06 21:03:07,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 94. [2021-10-06 21:03:07,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 93 states have (on average 1.946236559139785) internal successors, (181), 93 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:07,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 181 transitions. [2021-10-06 21:03:07,411 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 181 transitions. Word has length 20 [2021-10-06 21:03:07,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:03:07,411 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 181 transitions. [2021-10-06 21:03:07,412 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.625) internal successors, (26), 16 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:07,412 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 181 transitions. [2021-10-06 21:03:07,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-06 21:03:07,412 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:03:07,412 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:03:07,427 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 21:03:07,613 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 21:03:07,613 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 21:03:07,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:03:07,614 INFO L82 PathProgramCache]: Analyzing trace with hash -1150282582, now seen corresponding path program 63 times [2021-10-06 21:03:07,614 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:03:07,615 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1908448404] [2021-10-06 21:03:07,615 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:03:07,615 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:03:07,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:03:07,616 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 21:03:07,618 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 21:03:08,342 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-06 21:03:08,343 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:03:08,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-06 21:03:08,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:03:08,632 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-06 21:03:08,632 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:03:08,918 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-06 21:03:08,919 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:03:08,919 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1908448404] [2021-10-06 21:03:08,919 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1908448404] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-06 21:03:08,919 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-06 21:03:08,919 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2021-10-06 21:03:08,919 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783414642] [2021-10-06 21:03:08,920 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 21:03:08,920 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:03:08,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 21:03:08,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-06 21:03:08,921 INFO L87 Difference]: Start difference. First operand 94 states and 181 transitions. Second operand has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:09,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:03:09,051 INFO L93 Difference]: Finished difference Result 99 states and 185 transitions. [2021-10-06 21:03:09,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:03:09,052 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-06 21:03:09,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:03:09,052 INFO L225 Difference]: With dead ends: 99 [2021-10-06 21:03:09,052 INFO L226 Difference]: Without dead ends: 66 [2021-10-06 21:03:09,053 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 28 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 211.1ms TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-06 21:03:09,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-10-06 21:03:09,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 64. [2021-10-06 21:03:09,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 1.8412698412698412) internal successors, (116), 63 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:09,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 116 transitions. [2021-10-06 21:03:09,055 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 116 transitions. Word has length 20 [2021-10-06 21:03:09,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:03:09,055 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 116 transitions. [2021-10-06 21:03:09,055 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:09,055 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 116 transitions. [2021-10-06 21:03:09,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-06 21:03:09,055 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:03:09,056 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:03:09,072 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 21:03:09,262 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 21:03:09,263 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 21:03:09,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:03:09,263 INFO L82 PathProgramCache]: Analyzing trace with hash -551804529, now seen corresponding path program 64 times [2021-10-06 21:03:09,264 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:03:09,264 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [146006131] [2021-10-06 21:03:09,264 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:03:09,264 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:03:09,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:03:09,266 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 21:03:09,267 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 21:03:09,959 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:03:09,959 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:03:09,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-06 21:03:09,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:03:10,735 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:03:10,735 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:03:12,811 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:03:12,811 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:03:12,811 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [146006131] [2021-10-06 21:03:12,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [146006131] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:03:12,812 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:03:12,812 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 26 [2021-10-06 21:03:12,812 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420178826] [2021-10-06 21:03:12,812 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-10-06 21:03:12,812 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:03:12,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-10-06 21:03:12,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=585, Unknown=0, NotChecked=0, Total=756 [2021-10-06 21:03:12,813 INFO L87 Difference]: Start difference. First operand 64 states and 116 transitions. Second operand has 28 states, 27 states have (on average 1.5555555555555556) internal successors, (42), 27 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:20,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:03:20,603 INFO L93 Difference]: Finished difference Result 146 states and 264 transitions. [2021-10-06 21:03:20,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-10-06 21:03:20,604 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 1.5555555555555556) internal successors, (42), 27 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-06 21:03:20,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:03:20,604 INFO L225 Difference]: With dead ends: 146 [2021-10-06 21:03:20,604 INFO L226 Difference]: Without dead ends: 112 [2021-10-06 21:03:20,605 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 915 ImplicationChecksByTransitivity, 8624.8ms TimeCoverageRelationStatistics Valid=909, Invalid=2997, Unknown=0, NotChecked=0, Total=3906 [2021-10-06 21:03:20,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2021-10-06 21:03:20,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 70. [2021-10-06 21:03:20,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 69 states have (on average 1.855072463768116) internal successors, (128), 69 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:20,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 128 transitions. [2021-10-06 21:03:20,607 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 128 transitions. Word has length 21 [2021-10-06 21:03:20,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:03:20,608 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 128 transitions. [2021-10-06 21:03:20,608 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 1.5555555555555556) internal successors, (42), 27 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:20,608 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 128 transitions. [2021-10-06 21:03:20,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-06 21:03:20,608 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:03:20,608 INFO L512 BasicCegarLoop]: trace histogram [6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:03:20,622 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (82)] Ended with exit code 0 [2021-10-06 21:03:20,816 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 21:03:20,817 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 21:03:20,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:03:20,818 INFO L82 PathProgramCache]: Analyzing trace with hash 808286223, now seen corresponding path program 65 times [2021-10-06 21:03:20,819 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:03:20,819 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [322463362] [2021-10-06 21:03:20,819 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:03:20,819 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:03:20,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:03:20,820 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 21:03:20,822 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 21:03:21,551 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-10-06 21:03:21,551 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:03:21,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-06 21:03:21,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:03:21,668 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-06 21:03:21,668 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:03:21,948 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 15 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-06 21:03:21,948 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:03:21,948 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [322463362] [2021-10-06 21:03:21,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [322463362] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:03:21,949 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:03:21,949 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 14 [2021-10-06 21:03:21,949 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757559736] [2021-10-06 21:03:21,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-06 21:03:21,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:03:21,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-06 21:03:21,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-10-06 21:03:21,950 INFO L87 Difference]: Start difference. First operand 70 states and 128 transitions. Second operand has 14 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 14 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:22,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:03:22,358 INFO L93 Difference]: Finished difference Result 86 states and 152 transitions. [2021-10-06 21:03:22,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-06 21:03:22,359 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 14 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-06 21:03:22,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:03:22,359 INFO L225 Difference]: With dead ends: 86 [2021-10-06 21:03:22,360 INFO L226 Difference]: Without dead ends: 74 [2021-10-06 21:03:22,360 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 427.4ms TimeCoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:03:22,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-10-06 21:03:22,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 64. [2021-10-06 21:03:22,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 1.8571428571428572) internal successors, (117), 63 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:22,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 117 transitions. [2021-10-06 21:03:22,361 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 117 transitions. Word has length 21 [2021-10-06 21:03:22,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:03:22,361 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 117 transitions. [2021-10-06 21:03:22,361 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 14 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:22,362 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 117 transitions. [2021-10-06 21:03:22,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-06 21:03:22,362 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:03:22,362 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:03:22,377 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 21:03:22,562 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 21:03:22,563 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 21:03:22,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:03:22,563 INFO L82 PathProgramCache]: Analyzing trace with hash -1173863320, now seen corresponding path program 66 times [2021-10-06 21:03:22,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:03:22,564 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1139341694] [2021-10-06 21:03:22,564 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:03:22,564 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:03:22,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:03:22,566 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 21:03:22,567 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 21:03:23,336 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-06 21:03:23,336 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:03:23,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-06 21:03:23,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:03:23,703 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-10-06 21:03:23,704 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:03:24,283 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-10-06 21:03:24,284 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:03:24,284 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1139341694] [2021-10-06 21:03:24,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1139341694] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:03:24,284 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:03:24,284 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-06 21:03:24,284 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011303396] [2021-10-06 21:03:24,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-06 21:03:24,285 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:03:24,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-06 21:03:24,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-10-06 21:03:24,286 INFO L87 Difference]: Start difference. First operand 64 states and 117 transitions. Second operand has 11 states, 10 states have (on average 3.0) internal successors, (30), 10 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 21:03:24,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:03:24,420 INFO L93 Difference]: Finished difference Result 63 states and 116 transitions. [2021-10-06 21:03:24,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:03:24,420 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.0) internal successors, (30), 10 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 23 [2021-10-06 21:03:24,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:03:24,421 INFO L225 Difference]: With dead ends: 63 [2021-10-06 21:03:24,421 INFO L226 Difference]: Without dead ends: 0 [2021-10-06 21:03:24,421 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 306.5ms TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-10-06 21:03:24,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-06 21:03:24,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-06 21:03:24,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:24,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-06 21:03:24,422 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 23 [2021-10-06 21:03:24,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:03:24,422 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-06 21:03:24,422 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.0) internal successors, (30), 10 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 21:03:24,422 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-06 21:03:24,422 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-06 21:03:24,425 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-06 21:03:24,426 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-06 21:03:24,426 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-06 21:03:24,426 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-06 21:03:24,426 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-06 21:03:24,426 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-06 21:03:24,426 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-06 21:03:24,426 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-06 21:03:24,427 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK [2021-10-06 21:03:24,427 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK [2021-10-06 21:03:24,427 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-06 21:03:24,427 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-06 21:03:24,444 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 21:03:24,640 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 21:03:24,647 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-06 21:03:24,647 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-06 21:03:24,649 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.10 09:03:24 BasicIcfg [2021-10-06 21:03:24,649 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-06 21:03:24,650 INFO L168 Benchmark]: Toolchain (without parser) took 344546.15 ms. Allocated memory was 160.4 MB in the beginning and 194.0 MB in the end (delta: 33.6 MB). Free memory was 136.2 MB in the beginning and 67.8 MB in the end (delta: 68.4 MB). Peak memory consumption was 103.1 MB. Max. memory is 8.0 GB. [2021-10-06 21:03:24,650 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 160.4 MB. Free memory was 130.5 MB in the beginning and 130.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-10-06 21:03:24,651 INFO L168 Benchmark]: CACSL2BoogieTranslator took 318.39 ms. Allocated memory is still 160.4 MB. Free memory was 136.0 MB in the beginning and 125.6 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-10-06 21:03:24,652 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.39 ms. Allocated memory is still 160.4 MB. Free memory was 125.5 MB in the beginning and 124.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-06 21:03:24,652 INFO L168 Benchmark]: Boogie Preprocessor took 34.55 ms. Allocated memory is still 160.4 MB. Free memory was 124.0 MB in the beginning and 122.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-06 21:03:24,652 INFO L168 Benchmark]: RCFGBuilder took 574.32 ms. Allocated memory is still 160.4 MB. Free memory was 122.7 MB in the beginning and 110.8 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-10-06 21:03:24,653 INFO L168 Benchmark]: TraceAbstraction took 343547.15 ms. Allocated memory was 160.4 MB in the beginning and 194.0 MB in the end (delta: 33.6 MB). Free memory was 110.4 MB in the beginning and 67.8 MB in the end (delta: 42.6 MB). Peak memory consumption was 76.9 MB. Max. memory is 8.0 GB. [2021-10-06 21:03:24,654 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 160.4 MB. Free memory was 130.5 MB in the beginning and 130.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 318.39 ms. Allocated memory is still 160.4 MB. Free memory was 136.0 MB in the beginning and 125.6 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 53.39 ms. Allocated memory is still 160.4 MB. Free memory was 125.5 MB in the beginning and 124.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 34.55 ms. Allocated memory is still 160.4 MB. Free memory was 124.0 MB in the beginning and 122.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 574.32 ms. Allocated memory is still 160.4 MB. Free memory was 122.7 MB in the beginning and 110.8 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 343547.15 ms. Allocated memory was 160.4 MB in the beginning and 194.0 MB in the end (delta: 33.6 MB). Free memory was 110.4 MB in the beginning and 67.8 MB in the end (delta: 42.6 MB). Peak memory consumption was 76.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 7591.4ms, 86 PlacesBefore, 32 PlacesAfterwards, 85 TransitionsBefore, 27 TransitionsAfterwards, 660 CoEnabledTransitionPairs, 7 FixpointIterations, 46 TrivialSequentialCompositions, 25 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 4 ConcurrentYvCompositions, 4 ChoiceCompositions, 81 TotalNumberOfCompositions, 698 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 698, positive: 698, positive conditional: 0, positive unconditional: 698, 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: 417, positive: 417, positive conditional: 0, positive unconditional: 417, 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: 417, positive: 415, positive conditional: 0, positive unconditional: 415, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 2, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 6, positive: 6, positive conditional: 0, positive unconditional: 6, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 698, positive: 281, positive conditional: 0, positive unconditional: 281, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 417, unknown conditional: 0, unknown unconditional: 417] , 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 - PositiveResult [Line: 65]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 65]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 66]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 66]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 67]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 67]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 68]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 68]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 71]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 58]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 100 locations, 12 error locations. Started 1 CEGAR loops. OverallTime: 343267.6ms, OverallIterations: 83, TraceHistogramMax: 6, EmptinessCheckTime: 77.1ms, AutomataDifference: 214458.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 7654.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 2681 SDtfs, 6606 SDslu, 16195 SDs, 0 SdLazy, 19911 SolverSat, 4109 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 47603.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3882 GetRequests, 1441 SyntacticMatches, 51 SemanticMatches, 2390 ConstructedPredicates, 0 IntricatePredicates, 57 DeprecatedPredicates, 25892 ImplicationChecksByTransitivity, 203097.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=386occurred in iteration=53, InterpolantAutomatonStates: 1881, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 573.5ms AutomataMinimizationTime, 83 MinimizatonAttempts, 7510 StatesRemovedByMinimization, 76 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 445.0ms SsaConstructionTime, 4833.6ms SatisfiabilityAnalysisTime, 72472.9ms InterpolantComputationTime, 1321 NumberOfCodeBlocks, 1306 NumberOfCodeBlocksAsserted, 150 NumberOfCheckSat, 2476 ConstructedInterpolants, 214 QuantifiedInterpolants, 23331 SizeOfPredicates, 304 NumberOfNonLiveVariables, 5621 ConjunctsInSsa, 1061 ConjunctsInUnsatCore, 166 InterpolantComputations, 29 PerfectInterpolantSequences, 215/1026 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 10 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-06 21:03:24,702 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...