/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/parallel-misc-5.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-07 15:48:51,409 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-07 15:48:51,413 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-07 15:48:51,466 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-10-07 15:48:51,567 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-07 15:48:51,614 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-07 15:48:51,614 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-07 15:48:51,615 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-07 15:48:51,615 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-07 15:48:51,619 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-07 15:48:51,619 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-07 15:48:51,619 INFO L138 SettingsManager]: * Use SBE=true [2021-10-07 15:48:51,619 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-07 15:48:51,620 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-07 15:48:51,620 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-07 15:48:51,621 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-07 15:48:51,621 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-07 15:48:51,621 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-07 15:48:51,621 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-07 15:48:51,621 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-07 15:48:51,622 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-07 15:48:51,622 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-07 15:48:51,622 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-07 15:48:51,622 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-07 15:48:51,623 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-07 15:48:51,623 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-07 15:48:51,623 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-07 15:48:51,623 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-07 15:48:51,623 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-07 15:48:51,624 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-07 15:48:51,624 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-07 15:48:51,624 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-07 15:48:51,624 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-07 15:48:51,624 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-07 15:48:51,625 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-07 15:48:51,625 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-07 15:48:51,625 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-07 15:48:51,625 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-07 15:48:52,015 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-07 15:48:52,038 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-07 15:48:52,042 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-07 15:48:52,043 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-07 15:48:52,044 INFO L275 PluginConnector]: CDTParser initialized [2021-10-07 15:48:52,045 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-misc-5.wvr.c [2021-10-07 15:48:52,120 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9be523d35/6c228aa1dac4407bb6ca0f293068609d/FLAG7f84ff2e5 [2021-10-07 15:48:52,768 INFO L306 CDTParser]: Found 1 translation units. [2021-10-07 15:48:52,769 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-5.wvr.c [2021-10-07 15:48:52,777 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9be523d35/6c228aa1dac4407bb6ca0f293068609d/FLAG7f84ff2e5 [2021-10-07 15:48:53,104 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9be523d35/6c228aa1dac4407bb6ca0f293068609d [2021-10-07 15:48:53,106 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-07 15:48:53,115 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-07 15:48:53,116 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-07 15:48:53,117 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-07 15:48:53,124 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-07 15:48:53,126 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 03:48:53" (1/1) ... [2021-10-07 15:48:53,127 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3afb5766 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:48:53, skipping insertion in model container [2021-10-07 15:48:53,127 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 03:48:53" (1/1) ... [2021-10-07 15:48:53,135 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-07 15:48:53,162 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-07 15:48:53,340 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/parallel-misc-5.wvr.c[2646,2659] [2021-10-07 15:48:53,343 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-07 15:48:53,357 INFO L203 MainTranslator]: Completed pre-run [2021-10-07 15:48:53,385 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/parallel-misc-5.wvr.c[2646,2659] [2021-10-07 15:48:53,389 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-07 15:48:53,410 INFO L208 MainTranslator]: Completed translation [2021-10-07 15:48:53,411 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:48:53 WrapperNode [2021-10-07 15:48:53,411 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-07 15:48:53,412 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-07 15:48:53,412 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-07 15:48:53,412 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-07 15:48:53,422 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:48:53" (1/1) ... [2021-10-07 15:48:53,446 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:48:53" (1/1) ... [2021-10-07 15:48:53,491 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-07 15:48:53,492 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-07 15:48:53,492 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-07 15:48:53,492 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-07 15:48:53,504 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:48:53" (1/1) ... [2021-10-07 15:48:53,504 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:48:53" (1/1) ... [2021-10-07 15:48:53,527 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:48:53" (1/1) ... [2021-10-07 15:48:53,528 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:48:53" (1/1) ... [2021-10-07 15:48:53,543 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:48:53" (1/1) ... [2021-10-07 15:48:53,553 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:48:53" (1/1) ... [2021-10-07 15:48:53,559 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:48:53" (1/1) ... [2021-10-07 15:48:53,566 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-07 15:48:53,572 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-07 15:48:53,573 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-07 15:48:53,573 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-07 15:48:53,573 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:48:53" (1/1) ... [2021-10-07 15:48:53,584 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-07 15:48:53,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:48:53,616 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) [2021-10-07 15:48:53,637 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 [2021-10-07 15:48:53,686 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-07 15:48:53,686 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-07 15:48:53,687 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-07 15:48:53,687 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-07 15:48:53,687 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-10-07 15:48:53,687 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-10-07 15:48:53,687 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-07 15:48:53,687 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-07 15:48:53,688 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-07 15:48:53,688 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-07 15:48:53,688 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-07 15:48:53,688 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-07 15:48:53,688 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-07 15:48:53,688 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-07 15:48:53,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-07 15:48:53,690 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-07 15:48:54,359 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-07 15:48:54,359 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-10-07 15:48:54,365 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 03:48:54 BoogieIcfgContainer [2021-10-07 15:48:54,365 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-07 15:48:54,370 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-07 15:48:54,370 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-07 15:48:54,373 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-07 15:48:54,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 03:48:53" (1/3) ... [2021-10-07 15:48:54,374 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52e4abce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 03:48:54, skipping insertion in model container [2021-10-07 15:48:54,374 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:48:53" (2/3) ... [2021-10-07 15:48:54,374 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52e4abce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 03:48:54, skipping insertion in model container [2021-10-07 15:48:54,375 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 03:48:54" (3/3) ... [2021-10-07 15:48:54,377 INFO L111 eAbstractionObserver]: Analyzing ICFG parallel-misc-5.wvr.c [2021-10-07 15:48:54,384 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-07 15:48:54,385 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2021-10-07 15:48:54,385 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-07 15:48:54,452 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:54,452 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:54,452 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:54,453 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:54,453 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:54,453 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:54,453 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:54,454 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:54,454 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:54,454 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:54,454 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:54,455 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:54,455 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:54,455 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:54,455 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:54,455 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:54,456 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:54,456 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:54,456 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:54,456 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:54,457 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:54,458 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:54,458 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:54,458 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:54,460 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:54,460 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:54,461 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:54,461 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:54,461 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:54,462 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:54,462 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:54,462 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:54,463 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:54,463 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:54,463 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:54,464 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:54,464 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:54,464 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:54,464 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:54,465 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:54,465 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:54,465 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:54,465 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:54,465 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:54,466 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:54,466 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:54,466 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:54,466 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:54,467 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:54,467 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:54,467 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:54,468 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:54,472 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:54,473 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:54,474 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:54,474 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:54,474 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:54,474 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:54,475 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:54,475 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:54,475 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:54,481 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:54,481 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:54,486 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:54,487 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:54,488 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:54,488 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:54,489 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:54,490 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:54,490 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:54,490 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:54,490 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:54,503 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-10-07 15:48:54,588 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-07 15:48:54,603 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 [2021-10-07 15:48:54,604 INFO L340 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2021-10-07 15:48:54,629 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-07 15:48:54,643 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 115 places, 112 transitions, 248 flow [2021-10-07 15:48:54,651 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 115 places, 112 transitions, 248 flow [2021-10-07 15:48:54,653 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 115 places, 112 transitions, 248 flow [2021-10-07 15:48:54,742 INFO L129 PetriNetUnfolder]: 7/109 cut-off events. [2021-10-07 15:48:54,743 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-10-07 15:48:54,748 INFO L84 FinitePrefix]: Finished finitePrefix Result has 122 conditions, 109 events. 7/109 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 107 event pairs, 0 based on Foata normal form. 0/88 useless extension candidates. Maximal degree in co-relation 78. Up to 3 conditions per place. [2021-10-07 15:48:54,755 INFO L116 LiptonReduction]: Number of co-enabled transitions 1322 [2021-10-07 15:49:05,145 INFO L131 LiptonReduction]: Checked pairs total: 3224 [2021-10-07 15:49:05,145 INFO L133 LiptonReduction]: Total number of compositions: 103 [2021-10-07 15:49:05,155 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 47 places, 41 transitions, 106 flow [2021-10-07 15:49:05,186 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 255 states, 241 states have (on average 3.5145228215767634) internal successors, (847), 254 states have internal predecessors, (847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:49:05,190 INFO L276 IsEmpty]: Start isEmpty. Operand has 255 states, 241 states have (on average 3.5145228215767634) internal successors, (847), 254 states have internal predecessors, (847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:49:05,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2021-10-07 15:49:05,195 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:49:05,196 INFO L512 BasicCegarLoop]: trace histogram [1] [2021-10-07 15:49:05,196 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:49:05,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:49:05,202 INFO L82 PathProgramCache]: Analyzing trace with hash 486, now seen corresponding path program 1 times [2021-10-07 15:49:05,215 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:49:05,216 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1396122747] [2021-10-07 15:49:05,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:49:05,217 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:49:05,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:49:05,220 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) [2021-10-07 15:49:05,238 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-07 15:49:05,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:49:05,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-07 15:49:05,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:49:05,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:49:05,312 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:49:05,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:49:05,313 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:49:05,314 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1396122747] [2021-10-07 15:49:05,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1396122747] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:49:05,315 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:49:05,315 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0, 0] imperfect sequences [] total 0 [2021-10-07 15:49:05,317 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735818495] [2021-10-07 15:49:05,322 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-07 15:49:05,322 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:49:05,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-07 15:49:05,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-07 15:49:05,347 INFO L87 Difference]: Start difference. First operand has 255 states, 241 states have (on average 3.5145228215767634) internal successors, (847), 254 states have internal predecessors, (847), 0 states have call successors, (0), 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) [2021-10-07 15:49:05,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:49:05,378 INFO L93 Difference]: Finished difference Result 252 states and 844 transitions. [2021-10-07 15:49:05,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-07 15:49:05,380 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 [2021-10-07 15:49:05,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:49:05,396 INFO L225 Difference]: With dead ends: 252 [2021-10-07 15:49:05,396 INFO L226 Difference]: Without dead ends: 252 [2021-10-07 15:49:05,397 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 [2021-10-07 15:49:05,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2021-10-07 15:49:05,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 252. [2021-10-07 15:49:05,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 241 states have (on average 3.5020746887966805) internal successors, (844), 251 states have internal predecessors, (844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:49:05,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 844 transitions. [2021-10-07 15:49:05,472 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 844 transitions. Word has length 1 [2021-10-07 15:49:05,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:49:05,473 INFO L470 AbstractCegarLoop]: Abstraction has 252 states and 844 transitions. [2021-10-07 15:49:05,473 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) [2021-10-07 15:49:05,473 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 844 transitions. [2021-10-07 15:49:05,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-07 15:49:05,474 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:49:05,474 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-07 15:49:05,485 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-07 15:49:05,675 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 [2021-10-07 15:49:05,675 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:49:05,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:49:05,677 INFO L82 PathProgramCache]: Analyzing trace with hash 477240, now seen corresponding path program 1 times [2021-10-07 15:49:05,678 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:49:05,678 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [707550892] [2021-10-07 15:49:05,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:49:05,679 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:49:05,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:49:05,680 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) [2021-10-07 15:49:05,684 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-07 15:49:05,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:49:05,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-07 15:49:05,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:49:05,837 INFO L354 Elim1Store]: treesize reduction 38, result has 30.9 percent of original size [2021-10-07 15:49:05,838 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 22 [2021-10-07 15:49:05,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:49:05,910 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:49:05,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:49:05,929 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:49:05,929 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [707550892] [2021-10-07 15:49:05,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [707550892] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:49:05,930 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:49:05,930 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-07 15:49:05,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533086932] [2021-10-07 15:49:05,932 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 15:49:05,932 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:49:05,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 15:49:05,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 15:49:05,934 INFO L87 Difference]: Start difference. First operand 252 states and 844 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) [2021-10-07 15:49:05,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:49:05,990 INFO L93 Difference]: Finished difference Result 240 states and 813 transitions. [2021-10-07 15:49:05,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:49:05,991 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 [2021-10-07 15:49:05,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:49:05,997 INFO L225 Difference]: With dead ends: 240 [2021-10-07 15:49:05,997 INFO L226 Difference]: Without dead ends: 240 [2021-10-07 15:49:05,998 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 15:49:05,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2021-10-07 15:49:06,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 240. [2021-10-07 15:49:06,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 231 states have (on average 3.5194805194805197) internal successors, (813), 239 states have internal predecessors, (813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:49:06,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 813 transitions. [2021-10-07 15:49:06,025 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 813 transitions. Word has length 3 [2021-10-07 15:49:06,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:49:06,026 INFO L470 AbstractCegarLoop]: Abstraction has 240 states and 813 transitions. [2021-10-07 15:49:06,026 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) [2021-10-07 15:49:06,027 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 813 transitions. [2021-10-07 15:49:06,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-07 15:49:06,027 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:49:06,027 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-07 15:49:06,044 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-07 15:49:06,241 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 [2021-10-07 15:49:06,242 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:49:06,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:49:06,244 INFO L82 PathProgramCache]: Analyzing trace with hash 477241, now seen corresponding path program 1 times [2021-10-07 15:49:06,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:49:06,245 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [622932258] [2021-10-07 15:49:06,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:49:06,246 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:49:06,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:49:06,247 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) [2021-10-07 15:49:06,252 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-07 15:49:06,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:49:06,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-07 15:49:06,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:49:06,452 INFO L354 Elim1Store]: treesize reduction 141, result has 23.8 percent of original size [2021-10-07 15:49:06,453 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 4 case distinctions, treesize of input 18 treesize of output 49 [2021-10-07 15:49:06,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:49:06,543 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:49:06,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:49:06,597 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:49:06,597 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [622932258] [2021-10-07 15:49:06,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [622932258] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:49:06,598 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:49:06,598 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-07 15:49:06,598 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478431752] [2021-10-07 15:49:06,599 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 15:49:06,599 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:49:06,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 15:49:06,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:49:06,600 INFO L87 Difference]: Start difference. First operand 240 states and 813 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) [2021-10-07 15:49:06,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:49:06,647 INFO L93 Difference]: Finished difference Result 228 states and 782 transitions. [2021-10-07 15:49:06,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:49:06,648 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 [2021-10-07 15:49:06,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:49:06,653 INFO L225 Difference]: With dead ends: 228 [2021-10-07 15:49:06,653 INFO L226 Difference]: Without dead ends: 228 [2021-10-07 15:49:06,654 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 36.3ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:49:06,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2021-10-07 15:49:06,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 228. [2021-10-07 15:49:06,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 221 states have (on average 3.5384615384615383) internal successors, (782), 227 states have internal predecessors, (782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:49:06,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 782 transitions. [2021-10-07 15:49:06,718 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 782 transitions. Word has length 3 [2021-10-07 15:49:06,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:49:06,718 INFO L470 AbstractCegarLoop]: Abstraction has 228 states and 782 transitions. [2021-10-07 15:49:06,719 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) [2021-10-07 15:49:06,721 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 782 transitions. [2021-10-07 15:49:06,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-07 15:49:06,721 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:49:06,722 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-07 15:49:06,740 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-07 15:49:06,936 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 [2021-10-07 15:49:06,937 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:49:06,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:49:06,939 INFO L82 PathProgramCache]: Analyzing trace with hash 458640848, now seen corresponding path program 1 times [2021-10-07 15:49:06,939 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:49:06,940 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1060419733] [2021-10-07 15:49:06,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:49:06,940 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:49:06,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:49:06,942 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) [2021-10-07 15:49:06,949 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-07 15:49:06,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:49:06,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-07 15:49:06,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:49:07,159 INFO L354 Elim1Store]: treesize reduction 141, result has 23.8 percent of original size [2021-10-07 15:49:07,159 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 4 case distinctions, treesize of input 18 treesize of output 49 [2021-10-07 15:49:07,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:49:07,285 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:49:07,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:49:07,370 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:49:07,370 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1060419733] [2021-10-07 15:49:07,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1060419733] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:49:07,371 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:49:07,371 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-07 15:49:07,371 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241690715] [2021-10-07 15:49:07,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 15:49:07,372 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:49:07,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 15:49:07,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:49:07,373 INFO L87 Difference]: Start difference. First operand 228 states and 782 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:49:07,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:49:07,408 INFO L93 Difference]: Finished difference Result 210 states and 723 transitions. [2021-10-07 15:49:07,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:49:07,408 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-07 15:49:07,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:49:07,412 INFO L225 Difference]: With dead ends: 210 [2021-10-07 15:49:07,412 INFO L226 Difference]: Without dead ends: 210 [2021-10-07 15:49:07,413 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 36.0ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:49:07,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2021-10-07 15:49:07,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 210. [2021-10-07 15:49:07,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 205 states have (on average 3.526829268292683) internal successors, (723), 209 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:49:07,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 723 transitions. [2021-10-07 15:49:07,427 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 723 transitions. Word has length 5 [2021-10-07 15:49:07,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:49:07,427 INFO L470 AbstractCegarLoop]: Abstraction has 210 states and 723 transitions. [2021-10-07 15:49:07,428 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:49:07,428 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 723 transitions. [2021-10-07 15:49:07,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-07 15:49:07,429 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:49:07,429 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-07 15:49:07,447 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-07 15:49:07,641 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 [2021-10-07 15:49:07,641 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:49:07,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:49:07,643 INFO L82 PathProgramCache]: Analyzing trace with hash 458640849, now seen corresponding path program 1 times [2021-10-07 15:49:07,644 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:49:07,644 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1529387786] [2021-10-07 15:49:07,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:49:07,645 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:49:07,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:49:07,646 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) [2021-10-07 15:49:07,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-07 15:49:07,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:49:07,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-07 15:49:07,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:49:07,730 INFO L354 Elim1Store]: treesize reduction 38, result has 30.9 percent of original size [2021-10-07 15:49:07,730 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 22 [2021-10-07 15:49:07,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:49:07,769 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:49:07,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:49:07,793 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:49:07,793 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1529387786] [2021-10-07 15:49:07,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1529387786] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:49:07,795 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:49:07,795 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-07 15:49:07,795 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143057496] [2021-10-07 15:49:07,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 15:49:07,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:49:07,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 15:49:07,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 15:49:07,798 INFO L87 Difference]: Start difference. First operand 210 states and 723 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) [2021-10-07 15:49:07,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:49:07,827 INFO L93 Difference]: Finished difference Result 192 states and 664 transitions. [2021-10-07 15:49:07,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:49:07,828 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 [2021-10-07 15:49:07,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:49:07,831 INFO L225 Difference]: With dead ends: 192 [2021-10-07 15:49:07,831 INFO L226 Difference]: Without dead ends: 192 [2021-10-07 15:49:07,831 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 15:49:07,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2021-10-07 15:49:07,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2021-10-07 15:49:07,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 189 states have (on average 3.513227513227513) internal successors, (664), 191 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:49:07,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 664 transitions. [2021-10-07 15:49:07,843 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 664 transitions. Word has length 5 [2021-10-07 15:49:07,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:49:07,844 INFO L470 AbstractCegarLoop]: Abstraction has 192 states and 664 transitions. [2021-10-07 15:49:07,844 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) [2021-10-07 15:49:07,844 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 664 transitions. [2021-10-07 15:49:07,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-07 15:49:07,846 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:49:07,847 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:49:07,869 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-10-07 15:49:08,061 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 [2021-10-07 15:49:08,062 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:49:08,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:49:08,063 INFO L82 PathProgramCache]: Analyzing trace with hash -1627763441, now seen corresponding path program 1 times [2021-10-07 15:49:08,063 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:49:08,064 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [350254760] [2021-10-07 15:49:08,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:49:08,064 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:49:08,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:49:08,072 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) [2021-10-07 15:49:08,079 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-07 15:49:08,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:49:08,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-07 15:49:08,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:49:08,300 INFO L354 Elim1Store]: treesize reduction 141, result has 23.8 percent of original size [2021-10-07 15:49:08,300 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 4 case distinctions, treesize of input 29 treesize of output 59 [2021-10-07 15:49:08,309 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 58 [2021-10-07 15:49:08,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:49:08,501 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:49:08,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:49:08,599 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:49:08,599 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [350254760] [2021-10-07 15:49:08,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [350254760] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:49:08,599 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:49:08,599 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-07 15:49:08,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514470787] [2021-10-07 15:49:08,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 15:49:08,600 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:49:08,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 15:49:08,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:49:08,601 INFO L87 Difference]: Start difference. First operand 192 states and 664 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:49:08,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:49:08,635 INFO L93 Difference]: Finished difference Result 160 states and 536 transitions. [2021-10-07 15:49:08,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:49:08,635 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-07 15:49:08,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:49:08,637 INFO L225 Difference]: With dead ends: 160 [2021-10-07 15:49:08,638 INFO L226 Difference]: Without dead ends: 160 [2021-10-07 15:49:08,638 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 41.3ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:49:08,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-10-07 15:49:08,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2021-10-07 15:49:08,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 158 states have (on average 3.392405063291139) internal successors, (536), 159 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:49:08,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 536 transitions. [2021-10-07 15:49:08,647 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 536 transitions. Word has length 7 [2021-10-07 15:49:08,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:49:08,647 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 536 transitions. [2021-10-07 15:49:08,647 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:49:08,647 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 536 transitions. [2021-10-07 15:49:08,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-07 15:49:08,648 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:49:08,649 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:49:08,663 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-07 15:49:08,860 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 [2021-10-07 15:49:08,861 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:49:08,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:49:08,863 INFO L82 PathProgramCache]: Analyzing trace with hash -1627763440, now seen corresponding path program 1 times [2021-10-07 15:49:08,863 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:49:08,864 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [685530622] [2021-10-07 15:49:08,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:49:08,864 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:49:08,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:49:08,865 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) [2021-10-07 15:49:08,868 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-07 15:49:08,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:49:08,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-07 15:49:08,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:49:08,972 INFO L354 Elim1Store]: treesize reduction 38, result has 30.9 percent of original size [2021-10-07 15:49:08,972 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 22 [2021-10-07 15:49:09,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:49:09,032 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:49:09,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:49:09,093 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:49:09,094 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [685530622] [2021-10-07 15:49:09,094 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [685530622] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:49:09,094 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:49:09,094 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-07 15:49:09,094 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051089818] [2021-10-07 15:49:09,095 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-07 15:49:09,095 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:49:09,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-07 15:49:09,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-07 15:49:09,096 INFO L87 Difference]: Start difference. First operand 160 states and 536 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:49:09,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:49:09,124 INFO L93 Difference]: Finished difference Result 128 states and 408 transitions. [2021-10-07 15:49:09,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:49:09,125 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-07 15:49:09,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:49:09,127 INFO L225 Difference]: With dead ends: 128 [2021-10-07 15:49:09,127 INFO L226 Difference]: Without dead ends: 128 [2021-10-07 15:49:09,127 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 30.0ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-07 15:49:09,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-10-07 15:49:09,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2021-10-07 15:49:09,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 127 states have (on average 3.2125984251968505) internal successors, (408), 127 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:49:09,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 408 transitions. [2021-10-07 15:49:09,134 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 408 transitions. Word has length 7 [2021-10-07 15:49:09,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:49:09,134 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 408 transitions. [2021-10-07 15:49:09,134 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:49:09,134 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 408 transitions. [2021-10-07 15:49:09,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-07 15:49:09,136 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:49:09,136 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:49:09,151 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-07 15:49:09,337 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 [2021-10-07 15:49:09,339 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:49:09,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:49:09,340 INFO L82 PathProgramCache]: Analyzing trace with hash 1586479653, now seen corresponding path program 1 times [2021-10-07 15:49:09,341 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:49:09,341 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [538461452] [2021-10-07 15:49:09,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:49:09,341 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:49:09,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:49:09,342 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) [2021-10-07 15:49:09,349 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-07 15:49:09,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:49:09,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-07 15:49:09,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:49:09,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:49:09,472 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:49:09,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:49:09,505 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:49:09,505 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [538461452] [2021-10-07 15:49:09,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [538461452] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:49:09,506 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:49:09,506 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-07 15:49:09,506 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689028226] [2021-10-07 15:49:09,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 15:49:09,507 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:49:09,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 15:49:09,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:49:09,508 INFO L87 Difference]: Start difference. First operand 128 states and 408 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 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) [2021-10-07 15:49:09,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:49:09,540 INFO L93 Difference]: Finished difference Result 124 states and 368 transitions. [2021-10-07 15:49:09,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 15:49:09,540 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 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 [2021-10-07 15:49:09,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:49:09,543 INFO L225 Difference]: With dead ends: 124 [2021-10-07 15:49:09,543 INFO L226 Difference]: Without dead ends: 88 [2021-10-07 15:49:09,543 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.3ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:49:09,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-10-07 15:49:09,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2021-10-07 15:49:09,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 87 states have (on average 2.7471264367816093) internal successors, (239), 87 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:49:09,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 239 transitions. [2021-10-07 15:49:09,549 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 239 transitions. Word has length 16 [2021-10-07 15:49:09,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:49:09,549 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 239 transitions. [2021-10-07 15:49:09,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 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) [2021-10-07 15:49:09,550 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 239 transitions. [2021-10-07 15:49:09,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-07 15:49:09,553 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:49:09,553 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:49:09,575 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-07 15:49:09,769 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 [2021-10-07 15:49:09,770 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:49:09,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:49:09,771 INFO L82 PathProgramCache]: Analyzing trace with hash -928837405, now seen corresponding path program 2 times [2021-10-07 15:49:09,772 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:49:09,772 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1856198344] [2021-10-07 15:49:09,772 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:49:09,772 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:49:09,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:49:09,773 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) [2021-10-07 15:49:09,777 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-07 15:49:09,862 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-07 15:49:09,863 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:49:09,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-07 15:49:09,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:49:09,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:49:09,929 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:49:09,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:49:09,974 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:49:09,975 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1856198344] [2021-10-07 15:49:09,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1856198344] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:49:09,975 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:49:09,975 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-07 15:49:09,975 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6983250] [2021-10-07 15:49:09,976 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-07 15:49:09,976 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:49:09,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-07 15:49:09,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-07 15:49:09,977 INFO L87 Difference]: Start difference. First operand 88 states and 239 transitions. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:49:10,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:49:10,050 INFO L93 Difference]: Finished difference Result 218 states and 628 transitions. [2021-10-07 15:49:10,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-07 15:49:10,051 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-07 15:49:10,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:49:10,053 INFO L225 Difference]: With dead ends: 218 [2021-10-07 15:49:10,053 INFO L226 Difference]: Without dead ends: 172 [2021-10-07 15:49:10,053 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 25.3ms TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-10-07 15:49:10,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2021-10-07 15:49:10,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 168. [2021-10-07 15:49:10,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 167 states have (on average 3.0059880239520957) internal successors, (502), 167 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) [2021-10-07 15:49:10,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 502 transitions. [2021-10-07 15:49:10,062 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 502 transitions. Word has length 16 [2021-10-07 15:49:10,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:49:10,062 INFO L470 AbstractCegarLoop]: Abstraction has 168 states and 502 transitions. [2021-10-07 15:49:10,062 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:49:10,063 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 502 transitions. [2021-10-07 15:49:10,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 15:49:10,064 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:49:10,064 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:49:10,076 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2021-10-07 15:49:10,276 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 [2021-10-07 15:49:10,276 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:49:10,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:49:10,277 INFO L82 PathProgramCache]: Analyzing trace with hash -960273624, now seen corresponding path program 1 times [2021-10-07 15:49:10,278 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:49:10,279 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1543714293] [2021-10-07 15:49:10,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:49:10,279 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:49:10,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:49:10,280 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) [2021-10-07 15:49:10,281 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-07 15:49:10,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:49:10,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-07 15:49:10,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:49:10,427 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:49:10,427 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:49:10,466 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:49:10,466 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:49:10,466 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1543714293] [2021-10-07 15:49:10,467 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1543714293] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:49:10,467 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:49:10,467 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-07 15:49:10,467 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590511078] [2021-10-07 15:49:10,468 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 15:49:10,468 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:49:10,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 15:49:10,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:49:10,469 INFO L87 Difference]: Start difference. First operand 168 states and 502 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 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) [2021-10-07 15:49:10,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:49:10,481 INFO L93 Difference]: Finished difference Result 284 states and 806 transitions. [2021-10-07 15:49:10,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:49:10,482 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 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 [2021-10-07 15:49:10,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:49:10,484 INFO L225 Difference]: With dead ends: 284 [2021-10-07 15:49:10,485 INFO L226 Difference]: Without dead ends: 242 [2021-10-07 15:49:10,485 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.8ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:49:10,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2021-10-07 15:49:10,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 182. [2021-10-07 15:49:10,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 181 states have (on average 2.972375690607735) internal successors, (538), 181 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:49:10,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 538 transitions. [2021-10-07 15:49:10,494 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 538 transitions. Word has length 18 [2021-10-07 15:49:10,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:49:10,494 INFO L470 AbstractCegarLoop]: Abstraction has 182 states and 538 transitions. [2021-10-07 15:49:10,494 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 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) [2021-10-07 15:49:10,494 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 538 transitions. [2021-10-07 15:49:10,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 15:49:10,495 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:49:10,496 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:49:10,510 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-07 15:49:10,708 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 [2021-10-07 15:49:10,709 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:49:10,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:49:10,710 INFO L82 PathProgramCache]: Analyzing trace with hash 1414647319, now seen corresponding path program 1 times [2021-10-07 15:49:10,711 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:49:10,711 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2011866201] [2021-10-07 15:49:10,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:49:10,711 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:49:10,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:49:10,712 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) [2021-10-07 15:49:10,713 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-07 15:49:10,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:49:10,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-07 15:49:10,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:49:10,855 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:49:10,855 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:49:10,896 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:49:10,896 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:49:10,897 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2011866201] [2021-10-07 15:49:10,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2011866201] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:49:10,897 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:49:10,897 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-07 15:49:10,897 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283739964] [2021-10-07 15:49:10,898 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 15:49:10,898 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:49:10,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 15:49:10,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:49:10,899 INFO L87 Difference]: Start difference. First operand 182 states and 538 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 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) [2021-10-07 15:49:10,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:49:10,913 INFO L93 Difference]: Finished difference Result 274 states and 756 transitions. [2021-10-07 15:49:10,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:49:10,914 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 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 [2021-10-07 15:49:10,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:49:10,916 INFO L225 Difference]: With dead ends: 274 [2021-10-07 15:49:10,916 INFO L226 Difference]: Without dead ends: 232 [2021-10-07 15:49:10,917 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.8ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:49:10,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2021-10-07 15:49:10,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 182. [2021-10-07 15:49:10,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 181 states have (on average 2.9171270718232045) internal successors, (528), 181 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:49:10,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 528 transitions. [2021-10-07 15:49:10,927 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 528 transitions. Word has length 18 [2021-10-07 15:49:10,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:49:10,927 INFO L470 AbstractCegarLoop]: Abstraction has 182 states and 528 transitions. [2021-10-07 15:49:10,927 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 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) [2021-10-07 15:49:10,928 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 528 transitions. [2021-10-07 15:49:10,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:49:10,929 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:49:10,929 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:49:10,940 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-07 15:49:11,140 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 [2021-10-07 15:49:11,141 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:49:11,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:49:11,142 INFO L82 PathProgramCache]: Analyzing trace with hash 1957147727, now seen corresponding path program 1 times [2021-10-07 15:49:11,143 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:49:11,143 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1980094935] [2021-10-07 15:49:11,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:49:11,144 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:49:11,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:49:11,145 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) [2021-10-07 15:49:11,146 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-07 15:49:11,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:49:11,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-07 15:49:11,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:49:11,324 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:49:11,324 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:49:11,410 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:49:11,411 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:49:11,411 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1980094935] [2021-10-07 15:49:11,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1980094935] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:49:11,411 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:49:11,411 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-10-07 15:49:11,412 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584854553] [2021-10-07 15:49:11,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-07 15:49:11,412 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:49:11,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-07 15:49:11,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-07 15:49:11,416 INFO L87 Difference]: Start difference. First operand 182 states and 528 transitions. Second operand has 8 states, 8 states have (on average 4.0) internal successors, (32), 7 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) [2021-10-07 15:49:11,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:49:11,672 INFO L93 Difference]: Finished difference Result 684 states and 2035 transitions. [2021-10-07 15:49:11,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-07 15:49:11,673 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 7 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:49:11,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:49:11,679 INFO L225 Difference]: With dead ends: 684 [2021-10-07 15:49:11,679 INFO L226 Difference]: Without dead ends: 592 [2021-10-07 15:49:11,679 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 82.2ms TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:49:11,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2021-10-07 15:49:11,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 416. [2021-10-07 15:49:11,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 416 states, 415 states have (on average 3.2144578313253014) internal successors, (1334), 415 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:49:11,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 1334 transitions. [2021-10-07 15:49:11,704 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 1334 transitions. Word has length 20 [2021-10-07 15:49:11,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:49:11,704 INFO L470 AbstractCegarLoop]: Abstraction has 416 states and 1334 transitions. [2021-10-07 15:49:11,705 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 7 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) [2021-10-07 15:49:11,705 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 1334 transitions. [2021-10-07 15:49:11,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-07 15:49:11,707 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:49:11,707 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:49:11,719 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-07 15:49:11,919 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 [2021-10-07 15:49:11,920 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:49:11,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:49:11,921 INFO L82 PathProgramCache]: Analyzing trace with hash -2077434988, now seen corresponding path program 2 times [2021-10-07 15:49:11,921 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:49:11,922 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [760114156] [2021-10-07 15:49:11,922 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:49:11,922 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:49:11,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:49:11,923 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) [2021-10-07 15:49:11,924 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-07 15:49:12,046 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:49:12,046 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:49:12,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:49:12,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:49:12,123 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:49:12,124 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:49:12,197 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:49:12,197 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:49:12,197 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [760114156] [2021-10-07 15:49:12,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [760114156] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:49:12,197 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:49:12,198 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2021-10-07 15:49:12,198 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653015132] [2021-10-07 15:49:12,198 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-07 15:49:12,198 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:49:12,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-07 15:49:12,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-07 15:49:12,199 INFO L87 Difference]: Start difference. First operand 416 states and 1334 transitions. Second operand has 6 states, 6 states have (on average 5.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:49:12,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:49:12,241 INFO L93 Difference]: Finished difference Result 912 states and 2894 transitions. [2021-10-07 15:49:12,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 15:49:12,242 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-07 15:49:12,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:49:12,249 INFO L225 Difference]: With dead ends: 912 [2021-10-07 15:49:12,250 INFO L226 Difference]: Without dead ends: 830 [2021-10-07 15:49:12,250 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.1ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-07 15:49:12,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 830 states. [2021-10-07 15:49:12,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 830 to 608. [2021-10-07 15:49:12,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 608 states, 607 states have (on average 3.355848434925865) internal successors, (2037), 607 states have internal predecessors, (2037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:49:12,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 2037 transitions. [2021-10-07 15:49:12,278 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 2037 transitions. Word has length 22 [2021-10-07 15:49:12,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:49:12,279 INFO L470 AbstractCegarLoop]: Abstraction has 608 states and 2037 transitions. [2021-10-07 15:49:12,279 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:49:12,279 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 2037 transitions. [2021-10-07 15:49:12,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-07 15:49:12,281 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:49:12,282 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:49:12,297 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-07 15:49:12,494 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 [2021-10-07 15:49:12,495 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:49:12,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:49:12,496 INFO L82 PathProgramCache]: Analyzing trace with hash 702575704, now seen corresponding path program 1 times [2021-10-07 15:49:12,497 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:49:12,497 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [142964327] [2021-10-07 15:49:12,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:49:12,497 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:49:12,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:49:12,498 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) [2021-10-07 15:49:12,499 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-07 15:49:12,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:49:12,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:49:12,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:49:12,713 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:49:12,713 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:49:12,828 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:49:12,828 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:49:12,828 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [142964327] [2021-10-07 15:49:12,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [142964327] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:49:12,829 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:49:12,829 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2021-10-07 15:49:12,829 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086408765] [2021-10-07 15:49:12,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 15:49:12,830 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:49:12,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 15:49:12,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:49:12,831 INFO L87 Difference]: Start difference. First operand 608 states and 2037 transitions. Second operand has 12 states, 12 states have (on average 3.0) internal successors, (36), 11 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) [2021-10-07 15:49:13,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:49:13,809 INFO L93 Difference]: Finished difference Result 2790 states and 9063 transitions. [2021-10-07 15:49:13,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-07 15:49:13,810 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 11 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 22 [2021-10-07 15:49:13,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:49:13,834 INFO L225 Difference]: With dead ends: 2790 [2021-10-07 15:49:13,835 INFO L226 Difference]: Without dead ends: 2602 [2021-10-07 15:49:13,835 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 449.2ms TimeCoverageRelationStatistics Valid=279, Invalid=651, Unknown=0, NotChecked=0, Total=930 [2021-10-07 15:49:13,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2602 states. [2021-10-07 15:49:13,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2602 to 1560. [2021-10-07 15:49:13,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1560 states, 1559 states have (on average 3.4470814624759463) internal successors, (5374), 1559 states have internal predecessors, (5374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:49:13,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1560 states to 1560 states and 5374 transitions. [2021-10-07 15:49:13,918 INFO L78 Accepts]: Start accepts. Automaton has 1560 states and 5374 transitions. Word has length 22 [2021-10-07 15:49:13,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:49:13,919 INFO L470 AbstractCegarLoop]: Abstraction has 1560 states and 5374 transitions. [2021-10-07 15:49:13,919 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 11 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) [2021-10-07 15:49:13,919 INFO L276 IsEmpty]: Start isEmpty. Operand 1560 states and 5374 transitions. [2021-10-07 15:49:13,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-07 15:49:13,925 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:49:13,926 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:49:13,940 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-07 15:49:14,138 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 [2021-10-07 15:49:14,138 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:49:14,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:49:14,140 INFO L82 PathProgramCache]: Analyzing trace with hash 1078686202, now seen corresponding path program 1 times [2021-10-07 15:49:14,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:49:14,140 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [711215429] [2021-10-07 15:49:14,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:49:14,141 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:49:14,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:49:14,142 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) [2021-10-07 15:49:14,143 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-07 15:49:14,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:49:14,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:49:14,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:49:14,331 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:49:14,332 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:49:14,422 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:49:14,423 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:49:14,423 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [711215429] [2021-10-07 15:49:14,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [711215429] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:49:14,423 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:49:14,423 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2021-10-07 15:49:14,424 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631597470] [2021-10-07 15:49:14,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-07 15:49:14,424 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:49:14,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-07 15:49:14,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-07 15:49:14,425 INFO L87 Difference]: Start difference. First operand 1560 states and 5374 transitions. Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:49:14,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:49:14,478 INFO L93 Difference]: Finished difference Result 2784 states and 9492 transitions. [2021-10-07 15:49:14,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 15:49:14,478 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-07 15:49:14,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:49:14,502 INFO L225 Difference]: With dead ends: 2784 [2021-10-07 15:49:14,502 INFO L226 Difference]: Without dead ends: 2598 [2021-10-07 15:49:14,503 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.8ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-07 15:49:14,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2598 states. [2021-10-07 15:49:14,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2598 to 2128. [2021-10-07 15:49:14,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2128 states, 2127 states have (on average 3.4997649271274094) internal successors, (7444), 2127 states have internal predecessors, (7444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:49:14,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2128 states to 2128 states and 7444 transitions. [2021-10-07 15:49:14,637 INFO L78 Accepts]: Start accepts. Automaton has 2128 states and 7444 transitions. Word has length 22 [2021-10-07 15:49:14,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:49:14,637 INFO L470 AbstractCegarLoop]: Abstraction has 2128 states and 7444 transitions. [2021-10-07 15:49:14,637 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:49:14,637 INFO L276 IsEmpty]: Start isEmpty. Operand 2128 states and 7444 transitions. [2021-10-07 15:49:14,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-07 15:49:14,645 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:49:14,646 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:49:14,661 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-07 15:49:14,858 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 [2021-10-07 15:49:14,858 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:49:14,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:49:14,860 INFO L82 PathProgramCache]: Analyzing trace with hash 1084175344, now seen corresponding path program 1 times [2021-10-07 15:49:14,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:49:14,861 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1158067005] [2021-10-07 15:49:14,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:49:14,862 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:49:14,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:49:14,863 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) [2021-10-07 15:49:14,903 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-07 15:49:14,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:49:15,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-07 15:49:15,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:49:15,110 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:49:15,110 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:49:15,276 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:49:15,276 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:49:15,276 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1158067005] [2021-10-07 15:49:15,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1158067005] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:49:15,277 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:49:15,277 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-07 15:49:15,277 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623442946] [2021-10-07 15:49:15,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:49:15,278 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:49:15,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:49:15,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:49:15,279 INFO L87 Difference]: Start difference. First operand 2128 states and 7444 transitions. Second operand has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:49:16,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:49:16,780 INFO L93 Difference]: Finished difference Result 9444 states and 32921 transitions. [2021-10-07 15:49:16,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-07 15:49:16,781 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-07 15:49:16,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:49:16,859 INFO L225 Difference]: With dead ends: 9444 [2021-10-07 15:49:16,859 INFO L226 Difference]: Without dead ends: 9164 [2021-10-07 15:49:16,860 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 413 ImplicationChecksByTransitivity, 790.9ms TimeCoverageRelationStatistics Valid=452, Invalid=1188, Unknown=0, NotChecked=0, Total=1640 [2021-10-07 15:49:16,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9164 states. [2021-10-07 15:49:17,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9164 to 2834. [2021-10-07 15:49:17,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2834 states, 2833 states have (on average 3.4994705259442287) internal successors, (9914), 2833 states have internal predecessors, (9914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:49:17,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2834 states to 2834 states and 9914 transitions. [2021-10-07 15:49:17,047 INFO L78 Accepts]: Start accepts. Automaton has 2834 states and 9914 transitions. Word has length 26 [2021-10-07 15:49:17,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:49:17,048 INFO L470 AbstractCegarLoop]: Abstraction has 2834 states and 9914 transitions. [2021-10-07 15:49:17,048 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:49:17,048 INFO L276 IsEmpty]: Start isEmpty. Operand 2834 states and 9914 transitions. [2021-10-07 15:49:17,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-07 15:49:17,058 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:49:17,058 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:49:17,072 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Ended with exit code 0 [2021-10-07 15:49:17,270 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 [2021-10-07 15:49:17,271 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:49:17,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:49:17,272 INFO L82 PathProgramCache]: Analyzing trace with hash 1639701888, now seen corresponding path program 3 times [2021-10-07 15:49:17,273 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:49:17,273 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1233625872] [2021-10-07 15:49:17,273 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:49:17,273 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:49:17,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:49:17,274 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) [2021-10-07 15:49:17,282 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-10-07 15:49:17,435 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-07 15:49:17,435 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:49:17,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-07 15:49:17,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:49:17,551 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-07 15:49:17,552 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:49:17,742 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:49:17,743 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:49:17,743 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1233625872] [2021-10-07 15:49:17,743 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1233625872] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:49:17,743 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:49:17,743 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 8 [2021-10-07 15:49:17,743 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222939345] [2021-10-07 15:49:17,744 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-07 15:49:17,744 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:49:17,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-07 15:49:17,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-10-07 15:49:17,745 INFO L87 Difference]: Start difference. First operand 2834 states and 9914 transitions. Second operand has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 8 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) [2021-10-07 15:49:17,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:49:17,841 INFO L93 Difference]: Finished difference Result 5264 states and 18222 transitions. [2021-10-07 15:49:17,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-07 15:49:17,842 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 8 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 26 [2021-10-07 15:49:17,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:49:17,867 INFO L225 Difference]: With dead ends: 5264 [2021-10-07 15:49:17,867 INFO L226 Difference]: Without dead ends: 5010 [2021-10-07 15:49:17,868 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 67.9ms TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-10-07 15:49:17,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5010 states. [2021-10-07 15:49:17,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5010 to 3600. [2021-10-07 15:49:18,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3600 states, 3599 states have (on average 3.5248680188941375) internal successors, (12686), 3599 states have internal predecessors, (12686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:49:18,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3600 states to 3600 states and 12686 transitions. [2021-10-07 15:49:18,023 INFO L78 Accepts]: Start accepts. Automaton has 3600 states and 12686 transitions. Word has length 26 [2021-10-07 15:49:18,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:49:18,023 INFO L470 AbstractCegarLoop]: Abstraction has 3600 states and 12686 transitions. [2021-10-07 15:49:18,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 8 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) [2021-10-07 15:49:18,024 INFO L276 IsEmpty]: Start isEmpty. Operand 3600 states and 12686 transitions. [2021-10-07 15:49:18,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-07 15:49:18,037 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:49:18,038 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:49:18,054 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Ended with exit code 0 [2021-10-07 15:49:18,250 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 [2021-10-07 15:49:18,250 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:49:18,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:49:18,251 INFO L82 PathProgramCache]: Analyzing trace with hash 2020181595, now seen corresponding path program 2 times [2021-10-07 15:49:18,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:49:18,252 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [105471747] [2021-10-07 15:49:18,253 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:49:18,253 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:49:18,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:49:18,254 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) [2021-10-07 15:49:18,255 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-10-07 15:49:18,423 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:49:18,423 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:49:18,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-07 15:49:18,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:49:18,533 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-07 15:49:18,533 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:49:18,641 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-07 15:49:18,641 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:49:18,641 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [105471747] [2021-10-07 15:49:18,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [105471747] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:49:18,642 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:49:18,642 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-10-07 15:49:18,647 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445905096] [2021-10-07 15:49:18,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-07 15:49:18,648 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:49:18,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-07 15:49:18,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-07 15:49:18,649 INFO L87 Difference]: Start difference. First operand 3600 states and 12686 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:49:18,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:49:18,760 INFO L93 Difference]: Finished difference Result 6120 states and 21309 transitions. [2021-10-07 15:49:18,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-07 15:49:18,761 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-07 15:49:18,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:49:18,790 INFO L225 Difference]: With dead ends: 6120 [2021-10-07 15:49:18,790 INFO L226 Difference]: Without dead ends: 5854 [2021-10-07 15:49:18,790 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 38.3ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-07 15:49:18,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5854 states. [2021-10-07 15:49:18,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5854 to 4396. [2021-10-07 15:49:18,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4396 states, 4395 states have (on average 3.5419795221843002) internal successors, (15567), 4395 states have internal predecessors, (15567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:49:18,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4396 states to 4396 states and 15567 transitions. [2021-10-07 15:49:18,983 INFO L78 Accepts]: Start accepts. Automaton has 4396 states and 15567 transitions. Word has length 26 [2021-10-07 15:49:18,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:49:18,984 INFO L470 AbstractCegarLoop]: Abstraction has 4396 states and 15567 transitions. [2021-10-07 15:49:18,985 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:49:18,985 INFO L276 IsEmpty]: Start isEmpty. Operand 4396 states and 15567 transitions. [2021-10-07 15:49:19,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-07 15:49:19,002 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:49:19,002 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:49:19,015 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-10-07 15:49:19,214 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 [2021-10-07 15:49:19,215 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:49:19,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:49:19,216 INFO L82 PathProgramCache]: Analyzing trace with hash -1587130547, now seen corresponding path program 1 times [2021-10-07 15:49:19,217 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:49:19,217 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1132031836] [2021-10-07 15:49:19,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:49:19,218 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:49:19,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:49:19,219 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) [2021-10-07 15:49:19,220 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-10-07 15:49:19,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:49:19,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-07 15:49:19,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:49:19,531 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:49:19,531 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:49:19,741 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:49:19,741 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:49:19,742 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1132031836] [2021-10-07 15:49:19,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1132031836] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:49:19,742 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:49:19,742 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-10-07 15:49:19,742 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095828309] [2021-10-07 15:49:19,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-07 15:49:19,743 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:49:19,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-07 15:49:19,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2021-10-07 15:49:19,744 INFO L87 Difference]: Start difference. First operand 4396 states and 15567 transitions. Second operand has 16 states, 16 states have (on average 3.3125) internal successors, (53), 15 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:49:21,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:49:21,900 INFO L93 Difference]: Finished difference Result 20462 states and 72886 transitions. [2021-10-07 15:49:21,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-10-07 15:49:21,901 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.3125) internal successors, (53), 15 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-10-07 15:49:21,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:49:22,019 INFO L225 Difference]: With dead ends: 20462 [2021-10-07 15:49:22,019 INFO L226 Difference]: Without dead ends: 20082 [2021-10-07 15:49:22,020 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 673 ImplicationChecksByTransitivity, 1255.4ms TimeCoverageRelationStatistics Valid=660, Invalid=1890, Unknown=0, NotChecked=0, Total=2550 [2021-10-07 15:49:22,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20082 states. [2021-10-07 15:49:22,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20082 to 5816. [2021-10-07 15:49:22,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5816 states, 5815 states have (on average 3.5325881341358554) internal successors, (20542), 5815 states have internal predecessors, (20542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:49:22,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5816 states to 5816 states and 20542 transitions. [2021-10-07 15:49:22,547 INFO L78 Accepts]: Start accepts. Automaton has 5816 states and 20542 transitions. Word has length 30 [2021-10-07 15:49:22,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:49:22,547 INFO L470 AbstractCegarLoop]: Abstraction has 5816 states and 20542 transitions. [2021-10-07 15:49:22,547 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.3125) internal successors, (53), 15 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:49:22,547 INFO L276 IsEmpty]: Start isEmpty. Operand 5816 states and 20542 transitions. [2021-10-07 15:49:22,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-07 15:49:22,569 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:49:22,569 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:49:22,583 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Ended with exit code 0 [2021-10-07 15:49:22,781 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 [2021-10-07 15:49:22,782 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:49:22,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:49:22,783 INFO L82 PathProgramCache]: Analyzing trace with hash 690342124, now seen corresponding path program 4 times [2021-10-07 15:49:22,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:49:22,785 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1037392170] [2021-10-07 15:49:22,785 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:49:22,785 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:49:22,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:49:22,786 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) [2021-10-07 15:49:22,796 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-10-07 15:49:22,980 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:49:22,980 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:49:22,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-07 15:49:22,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:49:23,144 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 7 proven. 27 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:49:23,144 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:49:23,323 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 7 proven. 27 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:49:23,324 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:49:23,324 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1037392170] [2021-10-07 15:49:23,324 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1037392170] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:49:23,324 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:49:23,324 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-07 15:49:23,324 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801883330] [2021-10-07 15:49:23,325 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-07 15:49:23,325 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:49:23,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-07 15:49:23,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-10-07 15:49:23,326 INFO L87 Difference]: Start difference. First operand 5816 states and 20542 transitions. Second operand has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:49:23,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:49:23,479 INFO L93 Difference]: Finished difference Result 10176 states and 35596 transitions. [2021-10-07 15:49:23,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-07 15:49:23,480 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-10-07 15:49:23,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:49:23,525 INFO L225 Difference]: With dead ends: 10176 [2021-10-07 15:49:23,526 INFO L226 Difference]: Without dead ends: 9830 [2021-10-07 15:49:23,526 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 69.4ms TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-10-07 15:49:23,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9830 states. [2021-10-07 15:49:23,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9830 to 6862. [2021-10-07 15:49:23,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6862 states, 6861 states have (on average 3.5432152747412915) internal successors, (24310), 6861 states have internal predecessors, (24310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:49:23,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6862 states to 6862 states and 24310 transitions. [2021-10-07 15:49:23,866 INFO L78 Accepts]: Start accepts. Automaton has 6862 states and 24310 transitions. Word has length 30 [2021-10-07 15:49:23,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:49:23,867 INFO L470 AbstractCegarLoop]: Abstraction has 6862 states and 24310 transitions. [2021-10-07 15:49:23,867 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:49:23,867 INFO L276 IsEmpty]: Start isEmpty. Operand 6862 states and 24310 transitions. [2021-10-07 15:49:23,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-07 15:49:23,887 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:49:23,887 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:49:23,901 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-10-07 15:49:24,100 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 [2021-10-07 15:49:24,101 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:49:24,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:49:24,102 INFO L82 PathProgramCache]: Analyzing trace with hash -577584644, now seen corresponding path program 3 times [2021-10-07 15:49:24,103 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:49:24,103 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1450478781] [2021-10-07 15:49:24,103 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:49:24,104 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:49:24,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:49:24,104 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) [2021-10-07 15:49:24,105 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-10-07 15:49:24,306 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-10-07 15:49:24,306 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:49:24,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-07 15:49:24,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:49:24,542 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 7 proven. 27 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:49:24,543 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:49:24,945 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 11 proven. 24 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-07 15:49:24,945 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:49:24,945 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1450478781] [2021-10-07 15:49:24,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1450478781] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:49:24,946 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:49:24,946 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2021-10-07 15:49:24,946 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469873416] [2021-10-07 15:49:24,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-07 15:49:24,947 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:49:24,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-07 15:49:24,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-10-07 15:49:24,948 INFO L87 Difference]: Start difference. First operand 6862 states and 24310 transitions. Second operand has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 10 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:49:25,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:49:25,171 INFO L93 Difference]: Finished difference Result 13190 states and 46638 transitions. [2021-10-07 15:49:25,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-07 15:49:25,172 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 10 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-10-07 15:49:25,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:49:25,234 INFO L225 Difference]: With dead ends: 13190 [2021-10-07 15:49:25,234 INFO L226 Difference]: Without dead ends: 12744 [2021-10-07 15:49:25,235 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 152.7ms TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-10-07 15:49:25,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12744 states. [2021-10-07 15:49:25,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12744 to 9486. [2021-10-07 15:49:25,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9486 states, 9485 states have (on average 3.585239852398524) internal successors, (34006), 9485 states have internal predecessors, (34006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:49:25,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9486 states to 9486 states and 34006 transitions. [2021-10-07 15:49:25,806 INFO L78 Accepts]: Start accepts. Automaton has 9486 states and 34006 transitions. Word has length 30 [2021-10-07 15:49:25,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:49:25,808 INFO L470 AbstractCegarLoop]: Abstraction has 9486 states and 34006 transitions. [2021-10-07 15:49:25,808 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 10 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:49:25,808 INFO L276 IsEmpty]: Start isEmpty. Operand 9486 states and 34006 transitions. [2021-10-07 15:49:25,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-07 15:49:25,841 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:49:25,841 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:49:25,857 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-10-07 15:49:26,055 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 [2021-10-07 15:49:26,055 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:49:26,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:49:26,057 INFO L82 PathProgramCache]: Analyzing trace with hash -1312418724, now seen corresponding path program 2 times [2021-10-07 15:49:26,057 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:49:26,058 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [322966630] [2021-10-07 15:49:26,058 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:49:26,058 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:49:26,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:49:26,059 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) [2021-10-07 15:49:26,060 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-10-07 15:49:26,260 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:49:26,260 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:49:26,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-07 15:49:26,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:49:26,422 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 2 proven. 39 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:49:26,422 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:49:26,712 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 2 proven. 39 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:49:26,713 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:49:26,713 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [322966630] [2021-10-07 15:49:26,713 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [322966630] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:49:26,713 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:49:26,713 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-07 15:49:26,713 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523553662] [2021-10-07 15:49:26,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-07 15:49:26,714 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:49:26,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-07 15:49:26,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2021-10-07 15:49:26,715 INFO L87 Difference]: Start difference. First operand 9486 states and 34006 transitions. Second operand has 18 states, 18 states have (on average 3.388888888888889) internal successors, (61), 17 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:49:30,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:49:30,292 INFO L93 Difference]: Finished difference Result 40010 states and 144489 transitions. [2021-10-07 15:49:30,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-10-07 15:49:30,293 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.388888888888889) internal successors, (61), 17 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-10-07 15:49:30,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:49:30,458 INFO L225 Difference]: With dead ends: 40010 [2021-10-07 15:49:30,458 INFO L226 Difference]: Without dead ends: 39528 [2021-10-07 15:49:30,460 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1152 ImplicationChecksByTransitivity, 2063.3ms TimeCoverageRelationStatistics Valid=971, Invalid=3061, Unknown=0, NotChecked=0, Total=4032 [2021-10-07 15:49:30,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39528 states. [2021-10-07 15:49:31,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39528 to 10128. [2021-10-07 15:49:31,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10128 states, 10127 states have (on average 3.5543596326651525) internal successors, (35995), 10127 states have internal predecessors, (35995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:49:31,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10128 states to 10128 states and 35995 transitions. [2021-10-07 15:49:31,451 INFO L78 Accepts]: Start accepts. Automaton has 10128 states and 35995 transitions. Word has length 34 [2021-10-07 15:49:31,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:49:31,451 INFO L470 AbstractCegarLoop]: Abstraction has 10128 states and 35995 transitions. [2021-10-07 15:49:31,451 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.388888888888889) internal successors, (61), 17 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:49:31,451 INFO L276 IsEmpty]: Start isEmpty. Operand 10128 states and 35995 transitions. [2021-10-07 15:49:31,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-07 15:49:31,482 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:49:31,482 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:49:31,497 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-10-07 15:49:31,695 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 [2021-10-07 15:49:31,696 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:49:31,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:49:31,697 INFO L82 PathProgramCache]: Analyzing trace with hash -1117258280, now seen corresponding path program 5 times [2021-10-07 15:49:31,698 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:49:31,698 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1146122812] [2021-10-07 15:49:31,698 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:49:31,699 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:49:31,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:49:31,700 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) [2021-10-07 15:49:31,700 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-10-07 15:49:32,022 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-10-07 15:49:32,023 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:49:32,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 26 conjunts are in the unsatisfiable core [2021-10-07 15:49:32,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:49:32,165 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 9 proven. 48 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-07 15:49:32,165 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:49:32,642 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 39 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:49:32,642 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:49:32,643 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1146122812] [2021-10-07 15:49:32,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1146122812] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:49:32,643 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:49:32,643 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 10] total 15 [2021-10-07 15:49:32,643 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711140196] [2021-10-07 15:49:32,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-07 15:49:32,644 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:49:32,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-07 15:49:32,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2021-10-07 15:49:32,646 INFO L87 Difference]: Start difference. First operand 10128 states and 35995 transitions. Second operand has 16 states, 16 states have (on average 3.375) internal successors, (54), 15 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:49:32,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:49:32,954 INFO L93 Difference]: Finished difference Result 19774 states and 70104 transitions. [2021-10-07 15:49:32,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-07 15:49:32,955 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.375) internal successors, (54), 15 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-10-07 15:49:32,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:49:33,013 INFO L225 Difference]: With dead ends: 19774 [2021-10-07 15:49:33,013 INFO L226 Difference]: Without dead ends: 19236 [2021-10-07 15:49:33,014 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 258.5ms TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2021-10-07 15:49:33,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19236 states. [2021-10-07 15:49:33,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19236 to 13766. [2021-10-07 15:49:33,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13766 states, 13765 states have (on average 3.5864148201961497) internal successors, (49367), 13765 states have internal predecessors, (49367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:49:33,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13766 states to 13766 states and 49367 transitions. [2021-10-07 15:49:33,642 INFO L78 Accepts]: Start accepts. Automaton has 13766 states and 49367 transitions. Word has length 34 [2021-10-07 15:49:33,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:49:33,643 INFO L470 AbstractCegarLoop]: Abstraction has 13766 states and 49367 transitions. [2021-10-07 15:49:33,643 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.375) internal successors, (54), 15 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:49:33,643 INFO L276 IsEmpty]: Start isEmpty. Operand 13766 states and 49367 transitions. [2021-10-07 15:49:33,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-07 15:49:33,681 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:49:33,681 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:49:33,696 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-10-07 15:49:33,895 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 [2021-10-07 15:49:33,896 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:49:33,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:49:33,897 INFO L82 PathProgramCache]: Analyzing trace with hash 1557173469, now seen corresponding path program 4 times [2021-10-07 15:49:33,898 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:49:33,898 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [717602786] [2021-10-07 15:49:33,898 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:49:33,899 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:49:33,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:49:33,900 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) [2021-10-07 15:49:33,901 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-10-07 15:49:34,108 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:49:34,108 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:49:34,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-07 15:49:34,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:49:34,357 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 9 proven. 48 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-07 15:49:34,358 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:49:34,547 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 9 proven. 48 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-07 15:49:34,547 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:49:34,547 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [717602786] [2021-10-07 15:49:34,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [717602786] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:49:34,548 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:49:34,548 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2021-10-07 15:49:34,548 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587229313] [2021-10-07 15:49:34,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 15:49:34,549 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:49:34,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 15:49:34,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:49:34,550 INFO L87 Difference]: Start difference. First operand 13766 states and 49367 transitions. Second operand has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 11 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:49:34,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:49:34,915 INFO L93 Difference]: Finished difference Result 26734 states and 95606 transitions. [2021-10-07 15:49:34,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-07 15:49:34,916 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 11 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-10-07 15:49:34,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:49:35,126 INFO L225 Difference]: With dead ends: 26734 [2021-10-07 15:49:35,126 INFO L226 Difference]: Without dead ends: 26084 [2021-10-07 15:49:35,127 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 99.4ms TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:49:35,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26084 states. [2021-10-07 15:49:35,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26084 to 17978. [2021-10-07 15:49:35,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17978 states, 17977 states have (on average 3.6036046058852977) internal successors, (64782), 17977 states have internal predecessors, (64782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:49:35,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17978 states to 17978 states and 64782 transitions. [2021-10-07 15:49:35,967 INFO L78 Accepts]: Start accepts. Automaton has 17978 states and 64782 transitions. Word has length 34 [2021-10-07 15:49:35,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:49:35,967 INFO L470 AbstractCegarLoop]: Abstraction has 17978 states and 64782 transitions. [2021-10-07 15:49:35,967 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 11 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:49:35,968 INFO L276 IsEmpty]: Start isEmpty. Operand 17978 states and 64782 transitions. [2021-10-07 15:49:36,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-07 15:49:36,005 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:49:36,006 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:49:36,016 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-10-07 15:49:36,206 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 [2021-10-07 15:49:36,207 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:49:36,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:49:36,208 INFO L82 PathProgramCache]: Analyzing trace with hash -1592711637, now seen corresponding path program 3 times [2021-10-07 15:49:36,208 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:49:36,208 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [341236929] [2021-10-07 15:49:36,209 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:49:36,209 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:49:36,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:49:36,211 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) [2021-10-07 15:49:36,212 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-10-07 15:49:36,448 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-10-07 15:49:36,449 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:49:36,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-07 15:49:36,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:49:36,618 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 2 proven. 62 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-07 15:49:36,618 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:49:36,909 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 2 proven. 62 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-07 15:49:36,909 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:49:36,909 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [341236929] [2021-10-07 15:49:36,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [341236929] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:49:36,909 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:49:36,910 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-10-07 15:49:36,910 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773064005] [2021-10-07 15:49:36,910 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-07 15:49:36,910 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:49:36,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-07 15:49:36,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=288, Unknown=0, NotChecked=0, Total=380 [2021-10-07 15:49:36,911 INFO L87 Difference]: Start difference. First operand 17978 states and 64782 transitions. Second operand has 20 states, 20 states have (on average 3.45) internal successors, (69), 19 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:49:42,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:49:42,183 INFO L93 Difference]: Finished difference Result 76964 states and 281953 transitions. [2021-10-07 15:49:42,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2021-10-07 15:49:42,184 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.45) internal successors, (69), 19 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-07 15:49:42,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:49:42,558 INFO L225 Difference]: With dead ends: 76964 [2021-10-07 15:49:42,558 INFO L226 Difference]: Without dead ends: 76380 [2021-10-07 15:49:42,561 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1929 ImplicationChecksByTransitivity, 3314.0ms TimeCoverageRelationStatistics Valid=1425, Invalid=4895, Unknown=0, NotChecked=0, Total=6320 [2021-10-07 15:49:42,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76380 states. [2021-10-07 15:49:44,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76380 to 19286. [2021-10-07 15:49:44,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19286 states, 19285 states have (on average 3.595229452942702) internal successors, (69334), 19285 states have internal predecessors, (69334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:49:44,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19286 states to 19286 states and 69334 transitions. [2021-10-07 15:49:44,295 INFO L78 Accepts]: Start accepts. Automaton has 19286 states and 69334 transitions. Word has length 38 [2021-10-07 15:49:44,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:49:44,295 INFO L470 AbstractCegarLoop]: Abstraction has 19286 states and 69334 transitions. [2021-10-07 15:49:44,295 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.45) internal successors, (69), 19 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:49:44,295 INFO L276 IsEmpty]: Start isEmpty. Operand 19286 states and 69334 transitions. [2021-10-07 15:49:44,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-07 15:49:44,344 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:49:44,344 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:49:44,358 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-10-07 15:49:44,557 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 [2021-10-07 15:49:44,558 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:49:44,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:49:44,559 INFO L82 PathProgramCache]: Analyzing trace with hash 1489493060, now seen corresponding path program 6 times [2021-10-07 15:49:44,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:49:44,560 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1880409261] [2021-10-07 15:49:44,560 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:49:44,561 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:49:44,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:49:44,562 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) [2021-10-07 15:49:44,563 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-10-07 15:49:44,839 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-10-07 15:49:44,840 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:49:44,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 28 conjunts are in the unsatisfiable core [2021-10-07 15:49:44,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:49:44,998 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 11 proven. 75 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-07 15:49:44,998 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:49:45,563 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 45 proven. 45 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:49:45,564 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:49:45,564 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1880409261] [2021-10-07 15:49:45,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1880409261] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:49:45,564 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:49:45,564 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 11] total 17 [2021-10-07 15:49:45,565 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001206270] [2021-10-07 15:49:45,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-07 15:49:45,565 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:49:45,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-07 15:49:45,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2021-10-07 15:49:45,566 INFO L87 Difference]: Start difference. First operand 19286 states and 69334 transitions. Second operand has 18 states, 18 states have (on average 3.4444444444444446) internal successors, (62), 17 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:49:46,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:49:46,196 INFO L93 Difference]: Finished difference Result 37746 states and 135302 transitions. [2021-10-07 15:49:46,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-07 15:49:46,197 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.4444444444444446) internal successors, (62), 17 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-07 15:49:46,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:49:46,333 INFO L225 Difference]: With dead ends: 37746 [2021-10-07 15:49:46,333 INFO L226 Difference]: Without dead ends: 36992 [2021-10-07 15:49:46,334 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 356.0ms TimeCoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2021-10-07 15:49:46,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36992 states. [2021-10-07 15:49:47,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36992 to 24828. [2021-10-07 15:49:47,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24828 states, 24827 states have (on average 3.6082490836589196) internal successors, (89582), 24827 states have internal predecessors, (89582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:49:47,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24828 states to 24828 states and 89582 transitions. [2021-10-07 15:49:47,297 INFO L78 Accepts]: Start accepts. Automaton has 24828 states and 89582 transitions. Word has length 38 [2021-10-07 15:49:47,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:49:47,298 INFO L470 AbstractCegarLoop]: Abstraction has 24828 states and 89582 transitions. [2021-10-07 15:49:47,298 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.4444444444444446) internal successors, (62), 17 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:49:47,298 INFO L276 IsEmpty]: Start isEmpty. Operand 24828 states and 89582 transitions. [2021-10-07 15:49:47,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-07 15:49:47,341 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:49:47,342 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:49:47,355 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2021-10-07 15:49:47,555 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 [2021-10-07 15:49:47,555 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:49:47,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:49:47,557 INFO L82 PathProgramCache]: Analyzing trace with hash -1049596162, now seen corresponding path program 5 times [2021-10-07 15:49:47,557 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:49:47,558 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [85808204] [2021-10-07 15:49:47,558 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:49:47,558 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:49:47,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:49:47,559 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) [2021-10-07 15:49:47,561 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-10-07 15:49:47,770 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-10-07 15:49:47,771 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:49:47,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 31 conjunts are in the unsatisfiable core [2021-10-07 15:49:47,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:49:47,936 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 11 proven. 75 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-07 15:49:47,936 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:49:48,547 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 56 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:49:48,547 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:49:48,547 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [85808204] [2021-10-07 15:49:48,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [85808204] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:49:48,547 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:49:48,548 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 12] total 18 [2021-10-07 15:49:48,548 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816610355] [2021-10-07 15:49:48,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-07 15:49:48,548 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:49:48,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-07 15:49:48,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=241, Unknown=0, NotChecked=0, Total=342 [2021-10-07 15:49:48,549 INFO L87 Difference]: Start difference. First operand 24828 states and 89582 transitions. Second operand has 19 states, 19 states have (on average 3.526315789473684) internal successors, (67), 18 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:49:49,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:49:49,201 INFO L93 Difference]: Finished difference Result 48920 states and 176101 transitions. [2021-10-07 15:49:49,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-07 15:49:49,201 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.526315789473684) internal successors, (67), 18 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-07 15:49:49,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:49:49,384 INFO L225 Difference]: With dead ends: 48920 [2021-10-07 15:49:49,385 INFO L226 Difference]: Without dead ends: 48002 [2021-10-07 15:49:49,385 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 371.2ms TimeCoverageRelationStatistics Valid=101, Invalid=241, Unknown=0, NotChecked=0, Total=342 [2021-10-07 15:49:49,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48002 states. [2021-10-07 15:49:50,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48002 to 31548. [2021-10-07 15:49:50,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31548 states, 31547 states have (on average 3.619107997590896) internal successors, (114172), 31547 states have internal predecessors, (114172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:49:50,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31548 states to 31548 states and 114172 transitions. [2021-10-07 15:49:50,864 INFO L78 Accepts]: Start accepts. Automaton has 31548 states and 114172 transitions. Word has length 38 [2021-10-07 15:49:50,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:49:50,865 INFO L470 AbstractCegarLoop]: Abstraction has 31548 states and 114172 transitions. [2021-10-07 15:49:50,865 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.526315789473684) internal successors, (67), 18 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:49:50,865 INFO L276 IsEmpty]: Start isEmpty. Operand 31548 states and 114172 transitions. [2021-10-07 15:49:50,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-10-07 15:49:50,944 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:49:50,944 INFO L512 BasicCegarLoop]: trace histogram [12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:49:50,959 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2021-10-07 15:49:51,157 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 [2021-10-07 15:49:51,157 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:49:51,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:49:51,159 INFO L82 PathProgramCache]: Analyzing trace with hash -1991452617, now seen corresponding path program 2 times [2021-10-07 15:49:51,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:49:51,160 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [263840094] [2021-10-07 15:49:51,160 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:49:51,160 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:49:51,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:49:51,162 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) [2021-10-07 15:49:51,163 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-10-07 15:49:51,449 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:49:51,449 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:49:51,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-07 15:49:51,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:49:51,683 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 12 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:49:51,684 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:49:52,232 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 12 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:49:52,232 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:49:52,232 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [263840094] [2021-10-07 15:49:52,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [263840094] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:49:52,232 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:49:52,232 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 29 [2021-10-07 15:49:52,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080207952] [2021-10-07 15:49:52,233 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-10-07 15:49:52,233 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:49:52,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-10-07 15:49:52,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=227, Invalid=643, Unknown=0, NotChecked=0, Total=870 [2021-10-07 15:49:52,234 INFO L87 Difference]: Start difference. First operand 31548 states and 114172 transitions. Second operand has 30 states, 30 states have (on average 2.4) internal successors, (72), 29 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:50:19,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:50:19,717 INFO L93 Difference]: Finished difference Result 189576 states and 698600 transitions. [2021-10-07 15:50:19,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 197 states. [2021-10-07 15:50:19,718 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.4) internal successors, (72), 29 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-10-07 15:50:19,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:50:21,012 INFO L225 Difference]: With dead ends: 189576 [2021-10-07 15:50:21,013 INFO L226 Difference]: Without dead ends: 188956 [2021-10-07 15:50:21,023 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 209 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17446 ImplicationChecksByTransitivity, 19754.9ms TimeCoverageRelationStatistics Valid=9351, Invalid=34959, Unknown=0, NotChecked=0, Total=44310 [2021-10-07 15:50:21,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188956 states. [2021-10-07 15:50:26,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188956 to 114682. [2021-10-07 15:50:26,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114682 states, 114681 states have (on average 3.669605252831768) internal successors, (420834), 114681 states have internal predecessors, (420834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:50:27,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114682 states to 114682 states and 420834 transitions. [2021-10-07 15:50:27,936 INFO L78 Accepts]: Start accepts. Automaton has 114682 states and 420834 transitions. Word has length 40 [2021-10-07 15:50:27,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:50:27,937 INFO L470 AbstractCegarLoop]: Abstraction has 114682 states and 420834 transitions. [2021-10-07 15:50:27,937 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.4) internal successors, (72), 29 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:50:27,937 INFO L276 IsEmpty]: Start isEmpty. Operand 114682 states and 420834 transitions. [2021-10-07 15:50:28,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-10-07 15:50:28,037 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:50:28,037 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:50:28,050 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2021-10-07 15:50:28,250 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 [2021-10-07 15:50:28,250 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:50:28,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:50:28,251 INFO L82 PathProgramCache]: Analyzing trace with hash 1255326768, now seen corresponding path program 7 times [2021-10-07 15:50:28,251 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:50:28,251 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [355294703] [2021-10-07 15:50:28,251 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:50:28,251 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:50:28,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:50:28,252 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) [2021-10-07 15:50:28,253 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-10-07 15:50:28,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:50:28,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-07 15:50:28,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:50:28,662 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 13 proven. 108 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-07 15:50:28,663 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:50:29,004 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 13 proven. 108 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-07 15:50:29,004 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:50:29,005 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [355294703] [2021-10-07 15:50:29,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [355294703] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:50:29,005 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:50:29,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-10-07 15:50:29,005 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458327250] [2021-10-07 15:50:29,006 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-07 15:50:29,006 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:50:29,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-07 15:50:29,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2021-10-07 15:50:29,007 INFO L87 Difference]: Start difference. First operand 114682 states and 420834 transitions. Second operand has 16 states, 16 states have (on average 4.375) internal successors, (70), 15 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:50:31,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:50:31,786 INFO L93 Difference]: Finished difference Result 184980 states and 677111 transitions. [2021-10-07 15:50:31,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-07 15:50:31,787 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.375) internal successors, (70), 15 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-10-07 15:50:31,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:50:33,004 INFO L225 Difference]: With dead ends: 184980 [2021-10-07 15:50:33,004 INFO L226 Difference]: Without dead ends: 181806 [2021-10-07 15:50:33,005 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 224.7ms TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2021-10-07 15:50:33,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181806 states. [2021-10-07 15:50:38,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181806 to 124856. [2021-10-07 15:50:38,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124856 states, 124855 states have (on average 3.6716190781306315) internal successors, (458420), 124855 states have internal predecessors, (458420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:50:40,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124856 states to 124856 states and 458420 transitions. [2021-10-07 15:50:40,187 INFO L78 Accepts]: Start accepts. Automaton has 124856 states and 458420 transitions. Word has length 42 [2021-10-07 15:50:40,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:50:40,187 INFO L470 AbstractCegarLoop]: Abstraction has 124856 states and 458420 transitions. [2021-10-07 15:50:40,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.375) internal successors, (70), 15 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:50:40,187 INFO L276 IsEmpty]: Start isEmpty. Operand 124856 states and 458420 transitions. [2021-10-07 15:50:40,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-10-07 15:50:40,294 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:50:40,294 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:50:40,304 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2021-10-07 15:50:40,494 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 [2021-10-07 15:50:40,495 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:50:40,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:50:40,495 INFO L82 PathProgramCache]: Analyzing trace with hash -1006387105, now seen corresponding path program 6 times [2021-10-07 15:50:40,495 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:50:40,496 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1021250337] [2021-10-07 15:50:40,496 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:50:40,496 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:50:40,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:50:40,497 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) [2021-10-07 15:50:40,498 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-10-07 15:50:40,838 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2021-10-07 15:50:40,839 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:50:40,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 33 conjunts are in the unsatisfiable core [2021-10-07 15:50:40,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:50:41,598 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 13 proven. 108 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-07 15:50:41,598 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:50:42,446 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 72 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:50:42,447 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:50:42,447 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1021250337] [2021-10-07 15:50:42,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1021250337] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:50:42,447 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:50:42,448 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 14] total 21 [2021-10-07 15:50:42,448 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843378652] [2021-10-07 15:50:42,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-07 15:50:42,449 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:50:42,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-07 15:50:42,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=332, Unknown=0, NotChecked=0, Total=462 [2021-10-07 15:50:42,450 INFO L87 Difference]: Start difference. First operand 124856 states and 458420 transitions. Second operand has 22 states, 22 states have (on average 3.409090909090909) internal successors, (75), 21 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:50:45,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:50:45,059 INFO L93 Difference]: Finished difference Result 196048 states and 717785 transitions. [2021-10-07 15:50:45,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-07 15:50:45,060 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.409090909090909) internal successors, (75), 21 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-10-07 15:50:45,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:50:46,751 INFO L225 Difference]: With dead ends: 196048 [2021-10-07 15:50:46,752 INFO L226 Difference]: Without dead ends: 192846 [2021-10-07 15:50:46,752 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 538.2ms TimeCoverageRelationStatistics Valid=130, Invalid=332, Unknown=0, NotChecked=0, Total=462 [2021-10-07 15:50:47,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192846 states. [2021-10-07 15:50:51,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192846 to 135168. [2021-10-07 15:50:52,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135168 states, 135167 states have (on average 3.6731154793699647) internal successors, (496484), 135167 states have internal predecessors, (496484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:50:53,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135168 states to 135168 states and 496484 transitions. [2021-10-07 15:50:53,646 INFO L78 Accepts]: Start accepts. Automaton has 135168 states and 496484 transitions. Word has length 42 [2021-10-07 15:50:53,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:50:53,646 INFO L470 AbstractCegarLoop]: Abstraction has 135168 states and 496484 transitions. [2021-10-07 15:50:53,647 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.409090909090909) internal successors, (75), 21 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:50:53,647 INFO L276 IsEmpty]: Start isEmpty. Operand 135168 states and 496484 transitions. [2021-10-07 15:50:53,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-10-07 15:50:53,771 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:50:53,771 INFO L512 BasicCegarLoop]: trace histogram [12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:50:53,781 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2021-10-07 15:50:53,972 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 [2021-10-07 15:50:53,972 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:50:53,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:50:53,973 INFO L82 PathProgramCache]: Analyzing trace with hash -1631084529, now seen corresponding path program 2 times [2021-10-07 15:50:53,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:50:53,973 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [141873974] [2021-10-07 15:50:53,974 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:50:53,974 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:50:53,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:50:53,975 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) [2021-10-07 15:50:53,984 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2021-10-07 15:50:54,287 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:50:54,287 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:50:54,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-07 15:50:54,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:50:54,547 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 2 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:50:54,548 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:50:55,753 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 2 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:50:55,754 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:50:55,754 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [141873974] [2021-10-07 15:50:55,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [141873974] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:50:55,754 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:50:55,754 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 31 [2021-10-07 15:50:55,754 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216650149] [2021-10-07 15:50:55,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-10-07 15:50:55,755 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:50:55,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-10-07 15:50:55,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=257, Invalid=735, Unknown=0, NotChecked=0, Total=992 [2021-10-07 15:50:55,755 INFO L87 Difference]: Start difference. First operand 135168 states and 496484 transitions. Second operand has 32 states, 32 states have (on average 2.53125) internal successors, (81), 31 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:51:34,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:51:34,842 INFO L93 Difference]: Finished difference Result 571016 states and 2133113 transitions. [2021-10-07 15:51:34,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 224 states. [2021-10-07 15:51:34,843 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.53125) internal successors, (81), 31 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-10-07 15:51:34,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:51:40,943 INFO L225 Difference]: With dead ends: 571016 [2021-10-07 15:51:40,945 INFO L226 Difference]: Without dead ends: 570142 [2021-10-07 15:51:40,967 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 237 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22699 ImplicationChecksByTransitivity, 25534.5ms TimeCoverageRelationStatistics Valid=11657, Invalid=45225, Unknown=0, NotChecked=0, Total=56882 [2021-10-07 15:51:42,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570142 states. [2021-10-07 15:51:56,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570142 to 126378. [2021-10-07 15:51:56,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126378 states, 126377 states have (on average 3.6481242631174977) internal successors, (461039), 126377 states have internal predecessors, (461039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:51:58,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126378 states to 126378 states and 461039 transitions. [2021-10-07 15:51:58,188 INFO L78 Accepts]: Start accepts. Automaton has 126378 states and 461039 transitions. Word has length 44 [2021-10-07 15:51:58,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:51:58,189 INFO L470 AbstractCegarLoop]: Abstraction has 126378 states and 461039 transitions. [2021-10-07 15:51:58,189 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.53125) internal successors, (81), 31 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:51:58,189 INFO L276 IsEmpty]: Start isEmpty. Operand 126378 states and 461039 transitions. [2021-10-07 15:51:58,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-10-07 15:51:58,302 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:51:58,302 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:51:58,313 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2021-10-07 15:51:58,510 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 [2021-10-07 15:51:58,511 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:51:58,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:51:58,512 INFO L82 PathProgramCache]: Analyzing trace with hash 912135580, now seen corresponding path program 8 times [2021-10-07 15:51:58,513 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:51:58,513 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [520546666] [2021-10-07 15:51:58,513 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:51:58,513 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:51:58,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:51:58,515 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) [2021-10-07 15:51:58,515 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2021-10-07 15:51:58,834 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:51:58,834 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:51:58,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-07 15:51:58,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:51:59,002 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 15 proven. 147 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-07 15:51:59,002 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:51:59,335 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 15 proven. 147 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-07 15:51:59,335 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:51:59,335 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [520546666] [2021-10-07 15:51:59,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [520546666] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:51:59,336 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:51:59,336 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-07 15:51:59,336 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820495201] [2021-10-07 15:51:59,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-07 15:51:59,337 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:51:59,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-07 15:51:59,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2021-10-07 15:51:59,337 INFO L87 Difference]: Start difference. First operand 126378 states and 461039 transitions. Second operand has 18 states, 18 states have (on average 4.333333333333333) internal successors, (78), 17 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:52:01,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:52:01,794 INFO L93 Difference]: Finished difference Result 189152 states and 689166 transitions. [2021-10-07 15:52:01,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-07 15:52:01,795 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.333333333333333) internal successors, (78), 17 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-10-07 15:52:01,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:52:03,532 INFO L225 Difference]: With dead ends: 189152 [2021-10-07 15:52:03,532 INFO L226 Difference]: Without dead ends: 186090 [2021-10-07 15:52:03,533 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 236.3ms TimeCoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2021-10-07 15:52:03,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186090 states. [2021-10-07 15:52:07,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186090 to 122712. [2021-10-07 15:52:08,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122712 states, 122711 states have (on average 3.6587591984418673) internal successors, (448970), 122711 states have internal predecessors, (448970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:52:09,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122712 states to 122712 states and 448970 transitions. [2021-10-07 15:52:09,450 INFO L78 Accepts]: Start accepts. Automaton has 122712 states and 448970 transitions. Word has length 46 [2021-10-07 15:52:09,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:52:09,450 INFO L470 AbstractCegarLoop]: Abstraction has 122712 states and 448970 transitions. [2021-10-07 15:52:09,450 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.333333333333333) internal successors, (78), 17 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:52:09,450 INFO L276 IsEmpty]: Start isEmpty. Operand 122712 states and 448970 transitions. [2021-10-07 15:52:10,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-10-07 15:52:10,135 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:52:10,135 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:52:10,145 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Ended with exit code 0 [2021-10-07 15:52:10,336 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 [2021-10-07 15:52:10,336 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:52:10,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:52:10,338 INFO L82 PathProgramCache]: Analyzing trace with hash 1499461888, now seen corresponding path program 7 times [2021-10-07 15:52:10,338 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:52:10,339 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [154206354] [2021-10-07 15:52:10,339 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:52:10,339 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:52:10,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:52:10,340 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) [2021-10-07 15:52:10,341 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2021-10-07 15:52:10,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:52:10,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-07 15:52:10,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:52:10,817 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 15 proven. 147 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-07 15:52:10,818 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:52:11,166 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 15 proven. 147 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-07 15:52:11,166 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:52:11,166 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [154206354] [2021-10-07 15:52:11,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [154206354] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:52:11,167 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:52:11,167 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-07 15:52:11,167 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425724850] [2021-10-07 15:52:11,167 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-07 15:52:11,167 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:52:11,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-07 15:52:11,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2021-10-07 15:52:11,168 INFO L87 Difference]: Start difference. First operand 122712 states and 448970 transitions. Second operand has 18 states, 18 states have (on average 4.611111111111111) internal successors, (83), 17 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:52:13,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:52:13,585 INFO L93 Difference]: Finished difference Result 189140 states and 695787 transitions. [2021-10-07 15:52:13,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-07 15:52:13,587 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.611111111111111) internal successors, (83), 17 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-10-07 15:52:13,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:52:14,735 INFO L225 Difference]: With dead ends: 189140 [2021-10-07 15:52:14,735 INFO L226 Difference]: Without dead ends: 186338 [2021-10-07 15:52:14,735 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 245.5ms TimeCoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2021-10-07 15:52:15,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186338 states. [2021-10-07 15:52:19,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186338 to 134208. [2021-10-07 15:52:20,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134208 states, 134207 states have (on average 3.702608656776472) internal successors, (496916), 134207 states have internal predecessors, (496916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:52:22,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134208 states to 134208 states and 496916 transitions. [2021-10-07 15:52:22,254 INFO L78 Accepts]: Start accepts. Automaton has 134208 states and 496916 transitions. Word has length 46 [2021-10-07 15:52:22,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:52:22,255 INFO L470 AbstractCegarLoop]: Abstraction has 134208 states and 496916 transitions. [2021-10-07 15:52:22,255 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.611111111111111) internal successors, (83), 17 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:52:22,255 INFO L276 IsEmpty]: Start isEmpty. Operand 134208 states and 496916 transitions. [2021-10-07 15:52:22,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-10-07 15:52:22,406 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:52:22,406 INFO L512 BasicCegarLoop]: trace histogram [13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:52:22,421 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2021-10-07 15:52:22,619 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 [2021-10-07 15:52:22,620 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:52:22,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:52:22,621 INFO L82 PathProgramCache]: Analyzing trace with hash -1624402964, now seen corresponding path program 4 times [2021-10-07 15:52:22,621 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:52:22,621 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [135984328] [2021-10-07 15:52:22,621 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:52:22,621 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:52:22,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:52:22,624 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) [2021-10-07 15:52:22,660 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2021-10-07 15:52:23,199 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:52:23,199 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:52:23,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-07 15:52:23,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:52:23,495 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 2 proven. 184 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:52:23,495 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:52:24,248 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 2 proven. 184 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:52:24,248 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:52:24,249 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [135984328] [2021-10-07 15:52:24,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [135984328] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:52:24,249 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:52:24,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 33 [2021-10-07 15:52:24,249 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214499558] [2021-10-07 15:52:24,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-10-07 15:52:24,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:52:24,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-10-07 15:52:24,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=288, Invalid=834, Unknown=0, NotChecked=0, Total=1122 [2021-10-07 15:52:24,252 INFO L87 Difference]: Start difference. First operand 134208 states and 496916 transitions. Second operand has 34 states, 34 states have (on average 2.6176470588235294) internal successors, (89), 33 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) [2021-10-07 15:53:09,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:53:09,462 INFO L93 Difference]: Finished difference Result 657016 states and 2442990 transitions. [2021-10-07 15:53:09,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 242 states. [2021-10-07 15:53:09,462 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.6176470588235294) internal successors, (89), 33 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) Word has length 48 [2021-10-07 15:53:09,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:53:16,437 INFO L225 Difference]: With dead ends: 657016 [2021-10-07 15:53:16,438 INFO L226 Difference]: Without dead ends: 655880 [2021-10-07 15:53:16,443 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 256 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26594 ImplicationChecksByTransitivity, 30198.7ms TimeCoverageRelationStatistics Valid=13536, Invalid=52770, Unknown=0, NotChecked=0, Total=66306 [2021-10-07 15:53:18,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 655880 states. [2021-10-07 15:53:36,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 655880 to 102872. [2021-10-07 15:53:36,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102872 states, 102871 states have (on average 3.659301455220616) internal successors, (376436), 102871 states have internal predecessors, (376436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:53:37,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102872 states to 102872 states and 376436 transitions. [2021-10-07 15:53:37,675 INFO L78 Accepts]: Start accepts. Automaton has 102872 states and 376436 transitions. Word has length 48 [2021-10-07 15:53:37,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:53:37,676 INFO L470 AbstractCegarLoop]: Abstraction has 102872 states and 376436 transitions. [2021-10-07 15:53:37,676 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.6176470588235294) internal successors, (89), 33 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) [2021-10-07 15:53:37,676 INFO L276 IsEmpty]: Start isEmpty. Operand 102872 states and 376436 transitions. [2021-10-07 15:53:37,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-10-07 15:53:37,778 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:53:37,778 INFO L512 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:53:37,791 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2021-10-07 15:53:37,991 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 [2021-10-07 15:53:37,992 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:53:37,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:53:37,993 INFO L82 PathProgramCache]: Analyzing trace with hash -813223800, now seen corresponding path program 9 times [2021-10-07 15:53:37,994 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:53:37,994 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [149109242] [2021-10-07 15:53:37,994 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:53:37,994 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:53:37,995 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:53:37,995 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) [2021-10-07 15:53:37,996 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2021-10-07 15:53:38,403 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-10-07 15:53:38,403 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:53:38,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 43 conjunts are in the unsatisfiable core [2021-10-07 15:53:38,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:53:38,632 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 17 proven. 192 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-10-07 15:53:38,633 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:53:39,872 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 115 proven. 102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:53:39,873 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:53:39,873 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [149109242] [2021-10-07 15:53:39,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [149109242] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:53:39,873 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:53:39,873 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 18] total 27 [2021-10-07 15:53:39,873 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925833305] [2021-10-07 15:53:39,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-10-07 15:53:39,874 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:53:39,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-10-07 15:53:39,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=555, Unknown=0, NotChecked=0, Total=756 [2021-10-07 15:53:39,875 INFO L87 Difference]: Start difference. First operand 102872 states and 376436 transitions. Second operand has 28 states, 28 states have (on average 3.0714285714285716) internal successors, (86), 27 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:53:42,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:53:42,339 INFO L93 Difference]: Finished difference Result 186764 states and 686009 transitions. [2021-10-07 15:53:42,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-07 15:53:42,340 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.0714285714285716) internal successors, (86), 27 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-10-07 15:53:42,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:53:43,441 INFO L225 Difference]: With dead ends: 186764 [2021-10-07 15:53:43,441 INFO L226 Difference]: Without dead ends: 184250 [2021-10-07 15:53:43,441 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 901.2ms TimeCoverageRelationStatistics Valid=201, Invalid=555, Unknown=0, NotChecked=0, Total=756 [2021-10-07 15:53:44,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184250 states. [2021-10-07 15:53:48,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184250 to 131482. [2021-10-07 15:53:48,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131482 states, 131481 states have (on average 3.6943512750891765) internal successors, (485737), 131481 states have internal predecessors, (485737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:53:50,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131482 states to 131482 states and 485737 transitions. [2021-10-07 15:53:50,534 INFO L78 Accepts]: Start accepts. Automaton has 131482 states and 485737 transitions. Word has length 50 [2021-10-07 15:53:50,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:53:50,535 INFO L470 AbstractCegarLoop]: Abstraction has 131482 states and 485737 transitions. [2021-10-07 15:53:50,535 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 3.0714285714285716) internal successors, (86), 27 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:53:50,535 INFO L276 IsEmpty]: Start isEmpty. Operand 131482 states and 485737 transitions. [2021-10-07 15:53:50,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-10-07 15:53:50,688 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:53:50,701 INFO L512 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:53:50,717 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Ended with exit code 0 [2021-10-07 15:53:50,914 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 [2021-10-07 15:53:50,914 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:53:50,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:53:50,915 INFO L82 PathProgramCache]: Analyzing trace with hash 1100908769, now seen corresponding path program 8 times [2021-10-07 15:53:50,915 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:53:50,916 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2013778181] [2021-10-07 15:53:50,916 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:53:50,919 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:53:50,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:53:50,931 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) [2021-10-07 15:53:50,967 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2021-10-07 15:53:51,557 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:53:51,558 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:53:51,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-07 15:53:51,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:53:51,812 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 17 proven. 192 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-10-07 15:53:51,813 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:53:52,488 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 17 proven. 192 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-10-07 15:53:52,488 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:53:52,489 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2013778181] [2021-10-07 15:53:52,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2013778181] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:53:52,489 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:53:52,489 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-10-07 15:53:52,489 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594422251] [2021-10-07 15:53:52,490 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-07 15:53:52,490 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:53:52,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-07 15:53:52,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2021-10-07 15:53:52,491 INFO L87 Difference]: Start difference. First operand 131482 states and 485737 transitions. Second operand has 20 states, 20 states have (on average 4.55) internal successors, (91), 19 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:53:57,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:53:57,460 INFO L93 Difference]: Finished difference Result 239306 states and 886668 transitions. [2021-10-07 15:53:57,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-07 15:53:57,467 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.55) internal successors, (91), 19 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-10-07 15:53:57,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:54:00,406 INFO L225 Difference]: With dead ends: 239306 [2021-10-07 15:54:00,406 INFO L226 Difference]: Without dead ends: 236392 [2021-10-07 15:54:00,407 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 526.6ms TimeCoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2021-10-07 15:54:00,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236392 states. [2021-10-07 15:54:06,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236392 to 160222. [2021-10-07 15:54:07,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160222 states, 160221 states have (on average 3.7143570443325156) internal successors, (595118), 160221 states have internal predecessors, (595118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:54:08,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160222 states to 160222 states and 595118 transitions. [2021-10-07 15:54:08,875 INFO L78 Accepts]: Start accepts. Automaton has 160222 states and 595118 transitions. Word has length 50 [2021-10-07 15:54:08,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:54:08,875 INFO L470 AbstractCegarLoop]: Abstraction has 160222 states and 595118 transitions. [2021-10-07 15:54:08,875 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.55) internal successors, (91), 19 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:54:08,875 INFO L276 IsEmpty]: Start isEmpty. Operand 160222 states and 595118 transitions. [2021-10-07 15:54:09,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-10-07 15:54:09,017 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:54:09,017 INFO L512 BasicCegarLoop]: trace histogram [14, 14, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:54:09,028 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2021-10-07 15:54:09,218 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 [2021-10-07 15:54:09,218 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:54:09,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:54:09,222 INFO L82 PathProgramCache]: Analyzing trace with hash 990638459, now seen corresponding path program 5 times [2021-10-07 15:54:09,222 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:54:09,222 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2135966037] [2021-10-07 15:54:09,223 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:54:09,223 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:54:09,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:54:09,224 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) [2021-10-07 15:54:09,227 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2021-10-07 15:54:09,645 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2021-10-07 15:54:09,645 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:54:09,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-07 15:54:09,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:54:09,965 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 2 proven. 228 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:54:09,966 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:54:11,350 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 2 proven. 228 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:54:11,351 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:54:11,351 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2135966037] [2021-10-07 15:54:11,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2135966037] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:54:11,351 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:54:11,352 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 35 [2021-10-07 15:54:11,352 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474233177] [2021-10-07 15:54:11,353 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2021-10-07 15:54:11,353 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:54:11,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-10-07 15:54:11,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=320, Invalid=940, Unknown=0, NotChecked=0, Total=1260 [2021-10-07 15:54:11,354 INFO L87 Difference]: Start difference. First operand 160222 states and 595118 transitions. Second operand has 36 states, 36 states have (on average 2.6944444444444446) internal successors, (97), 35 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:55:06,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:55:06,553 INFO L93 Difference]: Finished difference Result 860474 states and 3210878 transitions. [2021-10-07 15:55:06,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 263 states. [2021-10-07 15:55:06,554 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.6944444444444446) internal successors, (97), 35 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-10-07 15:55:06,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:55:20,938 INFO L225 Difference]: With dead ends: 860474 [2021-10-07 15:55:20,938 INFO L226 Difference]: Without dead ends: 859074 [2021-10-07 15:55:20,956 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 278 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31402 ImplicationChecksByTransitivity, 36175.0ms TimeCoverageRelationStatistics Valid=15725, Invalid=62395, Unknown=0, NotChecked=0, Total=78120 [2021-10-07 15:55:24,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 859074 states. [2021-10-07 15:55:51,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 859074 to 120646. [2021-10-07 15:55:51,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120646 states, 120645 states have (on average 3.710837581333665) internal successors, (447694), 120645 states have internal predecessors, (447694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:55:52,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120646 states to 120646 states and 447694 transitions. [2021-10-07 15:55:52,934 INFO L78 Accepts]: Start accepts. Automaton has 120646 states and 447694 transitions. Word has length 52 [2021-10-07 15:55:52,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:55:52,934 INFO L470 AbstractCegarLoop]: Abstraction has 120646 states and 447694 transitions. [2021-10-07 15:55:52,935 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.6944444444444446) internal successors, (97), 35 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:55:52,935 INFO L276 IsEmpty]: Start isEmpty. Operand 120646 states and 447694 transitions. [2021-10-07 15:55:52,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-10-07 15:55:52,998 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:55:52,998 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:55:53,010 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2021-10-07 15:55:53,199 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 [2021-10-07 15:55:53,199 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:55:53,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:55:53,200 INFO L82 PathProgramCache]: Analyzing trace with hash 431191284, now seen corresponding path program 10 times [2021-10-07 15:55:53,201 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:55:53,202 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2138549985] [2021-10-07 15:55:53,202 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:55:53,202 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:55:53,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:55:53,204 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) [2021-10-07 15:55:53,205 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2021-10-07 15:55:54,164 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:55:54,164 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:55:54,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-07 15:55:54,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:55:54,381 INFO L134 CoverageAnalysis]: Checked inductivity of 271 backedges. 19 proven. 243 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-07 15:55:54,382 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:55:54,954 INFO L134 CoverageAnalysis]: Checked inductivity of 271 backedges. 19 proven. 243 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-07 15:55:54,955 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:55:54,955 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2138549985] [2021-10-07 15:55:54,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2138549985] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:55:54,955 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:55:54,955 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2021-10-07 15:55:54,956 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150298661] [2021-10-07 15:55:54,956 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-07 15:55:54,956 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:55:54,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-07 15:55:54,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=366, Unknown=0, NotChecked=0, Total=462 [2021-10-07 15:55:54,957 INFO L87 Difference]: Start difference. First operand 120646 states and 447694 transitions. Second operand has 22 states, 22 states have (on average 4.2727272727272725) internal successors, (94), 21 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:55:57,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:55:57,942 INFO L93 Difference]: Finished difference Result 227722 states and 846698 transitions. [2021-10-07 15:55:57,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-07 15:55:57,943 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.2727272727272725) internal successors, (94), 21 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-10-07 15:55:57,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:56:00,104 INFO L225 Difference]: With dead ends: 227722 [2021-10-07 15:56:00,104 INFO L226 Difference]: Without dead ends: 225096 [2021-10-07 15:56:00,104 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 434.3ms TimeCoverageRelationStatistics Valid=96, Invalid=366, Unknown=0, NotChecked=0, Total=462 [2021-10-07 15:56:00,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225096 states. [2021-10-07 15:56:06,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225096 to 150796. [2021-10-07 15:56:06,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150796 states, 150795 states have (on average 3.7296462084286612) internal successors, (562412), 150795 states have internal predecessors, (562412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:56:08,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150796 states to 150796 states and 562412 transitions. [2021-10-07 15:56:08,192 INFO L78 Accepts]: Start accepts. Automaton has 150796 states and 562412 transitions. Word has length 54 [2021-10-07 15:56:08,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:56:08,192 INFO L470 AbstractCegarLoop]: Abstraction has 150796 states and 562412 transitions. [2021-10-07 15:56:08,192 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 4.2727272727272725) internal successors, (94), 21 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:56:08,193 INFO L276 IsEmpty]: Start isEmpty. Operand 150796 states and 562412 transitions. [2021-10-07 15:56:08,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-10-07 15:56:08,302 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:56:08,302 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:56:08,318 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Forceful destruction successful, exit code 0 [2021-10-07 15:56:08,517 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 [2021-10-07 15:56:08,517 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:56:08,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:56:08,519 INFO L82 PathProgramCache]: Analyzing trace with hash -685973502, now seen corresponding path program 9 times [2021-10-07 15:56:08,519 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:56:08,520 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [71289951] [2021-10-07 15:56:08,520 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:56:08,520 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:56:08,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:56:08,521 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) [2021-10-07 15:56:08,523 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2021-10-07 15:56:09,018 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2021-10-07 15:56:09,018 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:56:09,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 45 conjunts are in the unsatisfiable core [2021-10-07 15:56:09,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:56:09,268 INFO L134 CoverageAnalysis]: Checked inductivity of 271 backedges. 19 proven. 243 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-07 15:56:09,268 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:56:10,618 INFO L134 CoverageAnalysis]: Checked inductivity of 271 backedges. 132 proven. 139 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:56:10,619 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:56:10,619 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [71289951] [2021-10-07 15:56:10,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [71289951] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:56:10,619 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:56:10,619 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 20] total 30 [2021-10-07 15:56:10,619 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779305219] [2021-10-07 15:56:10,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-10-07 15:56:10,620 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:56:10,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-10-07 15:56:10,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=238, Invalid=692, Unknown=0, NotChecked=0, Total=930 [2021-10-07 15:56:10,621 INFO L87 Difference]: Start difference. First operand 150796 states and 562412 transitions. Second operand has 31 states, 31 states have (on average 3.193548387096774) internal successors, (99), 30 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:56:16,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:56:16,098 INFO L93 Difference]: Finished difference Result 289064 states and 1079815 transitions. [2021-10-07 15:56:16,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-07 15:56:16,099 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 3.193548387096774) internal successors, (99), 30 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-10-07 15:56:16,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:56:19,386 INFO L225 Difference]: With dead ends: 289064 [2021-10-07 15:56:19,386 INFO L226 Difference]: Without dead ends: 285946 [2021-10-07 15:56:19,386 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 1019.4ms TimeCoverageRelationStatistics Valid=238, Invalid=692, Unknown=0, NotChecked=0, Total=930 [2021-10-07 15:56:20,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285946 states. [2021-10-07 15:56:28,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285946 to 185660. [2021-10-07 15:56:28,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185660 states, 185659 states have (on average 3.74236638137661) internal successors, (694804), 185659 states have internal predecessors, (694804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:56:30,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185660 states to 185660 states and 694804 transitions. [2021-10-07 15:56:30,764 INFO L78 Accepts]: Start accepts. Automaton has 185660 states and 694804 transitions. Word has length 54 [2021-10-07 15:56:30,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:56:30,765 INFO L470 AbstractCegarLoop]: Abstraction has 185660 states and 694804 transitions. [2021-10-07 15:56:30,765 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 3.193548387096774) internal successors, (99), 30 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:56:30,765 INFO L276 IsEmpty]: Start isEmpty. Operand 185660 states and 694804 transitions. [2021-10-07 15:56:30,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-10-07 15:56:30,893 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:56:30,893 INFO L512 BasicCegarLoop]: trace histogram [15, 15, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:56:30,907 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2021-10-07 15:56:31,094 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 [2021-10-07 15:56:31,094 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:56:31,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:56:31,096 INFO L82 PathProgramCache]: Analyzing trace with hash 735402954, now seen corresponding path program 6 times [2021-10-07 15:56:31,096 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:56:31,097 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [710591646] [2021-10-07 15:56:31,097 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:56:31,097 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:56:31,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:56:31,099 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) [2021-10-07 15:56:31,100 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2021-10-07 15:56:31,648 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 17 check-sat command(s) [2021-10-07 15:56:31,648 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:56:31,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-07 15:56:31,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:56:31,997 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 2 proven. 278 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-07 15:56:31,997 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:56:32,908 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 2 proven. 278 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-07 15:56:32,909 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:56:32,909 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [710591646] [2021-10-07 15:56:32,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [710591646] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:56:32,909 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:56:32,910 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 37 [2021-10-07 15:56:32,910 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904915887] [2021-10-07 15:56:32,911 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2021-10-07 15:56:32,911 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:56:32,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-10-07 15:56:32,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=1053, Unknown=0, NotChecked=0, Total=1406 [2021-10-07 15:56:32,912 INFO L87 Difference]: Start difference. First operand 185660 states and 694804 transitions. Second operand has 38 states, 38 states have (on average 2.763157894736842) internal successors, (105), 37 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:57:42,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:57:42,849 INFO L93 Difference]: Finished difference Result 1236568 states and 4618178 transitions. [2021-10-07 15:57:42,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 287 states. [2021-10-07 15:57:42,850 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.763157894736842) internal successors, (105), 37 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2021-10-07 15:57:42,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:58:04,852 INFO L225 Difference]: With dead ends: 1236568 [2021-10-07 15:58:04,852 INFO L226 Difference]: Without dead ends: 1234904 [2021-10-07 15:58:04,862 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 377 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 303 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37574 ImplicationChecksByTransitivity, 43736.3ms TimeCoverageRelationStatistics Valid=18300, Invalid=74420, Unknown=0, NotChecked=0, Total=92720 [2021-10-07 15:58:08,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1234904 states. Received shutdown request... [2021-10-07 15:58:32,480 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK [2021-10-07 15:58:32,498 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Ended with exit code 0 [2021-10-07 15:58:32,520 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-10-07 15:58:32,520 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-10-07 15:58:32,695 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 [2021-10-07 15:58:32,695 WARN L594 AbstractCegarLoop]: Verification canceled: while executing MinimizeSevpa. [2021-10-07 15:58:32,697 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-07 15:58:32,697 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-07 15:58:32,697 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-07 15:58:32,697 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-07 15:58:32,697 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-07 15:58:32,698 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-07 15:58:32,698 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-07 15:58:32,698 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-07 15:58:32,698 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr8REQUIRES_VIOLATION [2021-10-07 15:58:32,698 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr9REQUIRES_VIOLATION [2021-10-07 15:58:32,698 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr10REQUIRES_VIOLATION [2021-10-07 15:58:32,698 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr11REQUIRES_VIOLATION [2021-10-07 15:58:32,698 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK [2021-10-07 15:58:32,699 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-07 15:58:32,699 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-07 15:58:32,699 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-07 15:58:32,703 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-07 15:58:32,703 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-07 15:58:32,705 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.10 03:58:32 BasicIcfg [2021-10-07 15:58:32,705 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-07 15:58:32,706 INFO L168 Benchmark]: Toolchain (without parser) took 579598.41 ms. Allocated memory was 151.0 MB in the beginning and 8.0 GB in the end (delta: 7.8 GB). Free memory was 125.4 MB in the beginning and 4.9 GB in the end (delta: -4.7 GB). Peak memory consumption was 4.5 GB. Max. memory is 8.0 GB. [2021-10-07 15:58:32,707 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 151.0 MB. Free memory is still 122.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-07 15:58:32,707 INFO L168 Benchmark]: CACSL2BoogieTranslator took 294.91 ms. Allocated memory is still 151.0 MB. Free memory was 125.1 MB in the beginning and 113.9 MB in the end (delta: 11.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-10-07 15:58:32,708 INFO L168 Benchmark]: Boogie Procedure Inliner took 79.13 ms. Allocated memory is still 151.0 MB. Free memory was 113.9 MB in the beginning and 112.1 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-07 15:58:32,708 INFO L168 Benchmark]: Boogie Preprocessor took 74.46 ms. Allocated memory is still 151.0 MB. Free memory was 112.1 MB in the beginning and 110.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-07 15:58:32,708 INFO L168 Benchmark]: RCFGBuilder took 792.50 ms. Allocated memory is still 151.0 MB. Free memory was 110.7 MB in the beginning and 126.9 MB in the end (delta: -16.3 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. [2021-10-07 15:58:32,709 INFO L168 Benchmark]: TraceAbstraction took 578335.95 ms. Allocated memory was 151.0 MB in the beginning and 8.0 GB in the end (delta: 7.8 GB). Free memory was 126.4 MB in the beginning and 4.9 GB in the end (delta: -4.7 GB). Peak memory consumption was 4.5 GB. Max. memory is 8.0 GB. [2021-10-07 15:58:32,711 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 151.0 MB. Free memory is still 122.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 294.91 ms. Allocated memory is still 151.0 MB. Free memory was 125.1 MB in the beginning and 113.9 MB in the end (delta: 11.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 79.13 ms. Allocated memory is still 151.0 MB. Free memory was 113.9 MB in the beginning and 112.1 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 74.46 ms. Allocated memory is still 151.0 MB. Free memory was 112.1 MB in the beginning and 110.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 792.50 ms. Allocated memory is still 151.0 MB. Free memory was 110.7 MB in the beginning and 126.9 MB in the end (delta: -16.3 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 578335.95 ms. Allocated memory was 151.0 MB in the beginning and 8.0 GB in the end (delta: 7.8 GB). Free memory was 126.4 MB in the beginning and 4.9 GB in the end (delta: -4.7 GB). Peak memory consumption was 4.5 GB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 10494.9ms, 115 PlacesBefore, 47 PlacesAfterwards, 112 TransitionsBefore, 41 TransitionsAfterwards, 1322 CoEnabledTransitionPairs, 8 FixpointIterations, 57 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 4 ConcurrentYvCompositions, 3 ChoiceCompositions, 103 TotalNumberOfCompositions, 3224 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2439, positive: 2347, positive conditional: 0, positive unconditional: 2347, negative: 92, negative conditional: 0, negative unconditional: 92, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 953, positive: 928, positive conditional: 0, positive unconditional: 928, negative: 25, negative conditional: 0, negative unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 953, positive: 922, positive conditional: 0, positive unconditional: 922, negative: 31, negative conditional: 0, negative unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 31, positive: 6, positive conditional: 0, positive unconditional: 6, negative: 25, negative conditional: 0, negative unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 221, positive: 127, positive conditional: 0, positive unconditional: 127, negative: 94, negative conditional: 0, negative unconditional: 94, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 2439, positive: 1419, positive conditional: 0, positive unconditional: 1419, negative: 67, negative conditional: 0, negative unconditional: 67, unknown: 953, unknown conditional: 0, unknown unconditional: 953] , Statistics on independence cache: Total cache size (in pairs): 170, Positive cache size: 159, Positive conditional cache size: 0, Positive unconditional cache size: 159, Negative cache size: 11, Negative conditional cache size: 0, Negative unconditional cache size: 11 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 106]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 99]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 99]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 100]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 100]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 101]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 101]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 102]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 102]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 103]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 103]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 104]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 104]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 87]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 101]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 99]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 100]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing MinimizeSevpa. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 131 locations, 17 error locations. Started 1 CEGAR loops. OverallTime: 578119.2ms, OverallIterations: 40, TraceHistogramMax: 15, EmptinessCheckTime: 2407.6ms, AutomataDifference: 347608.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 10582.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 3327 SDtfs, 70231 SDslu, 27034 SDs, 0 SdLazy, 15669 SolverSat, 25813 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 36275.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3623 GetRequests, 1795 SyntacticMatches, 0 SemanticMatches, 1828 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140359 ImplicationChecksByTransitivity, 169149.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=185660occurred in iteration=39, InterpolantAutomatonStates: 1634, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 176597.6ms AutomataMinimizationTime, 40 MinimizatonAttempts, 2503536 StatesRemovedByMinimization, 31 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 410.6ms SsaConstructionTime, 3058.9ms SatisfiabilityAnalysisTime, 22483.4ms InterpolantComputationTime, 1193 NumberOfCodeBlocks, 1193 NumberOfCodeBlocksAsserted, 135 NumberOfCheckSat, 2306 ConstructedInterpolants, 6 QuantifiedInterpolants, 8898 SizeOfPredicates, 308 NumberOfNonLiveVariables, 4671 ConjunctsInSsa, 601 ConjunctsInUnsatCore, 80 InterpolantComputations, 22 PerfectInterpolantSequences, 1007/6292 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown