/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/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/verifythis/duplets.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 20:01:05,838 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 20:01:05,841 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 20:01:05,874 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 20:01:05,875 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 20:01:05,876 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 20:01:05,878 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 20:01:05,880 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 20:01:05,882 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 20:01:05,886 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 20:01:05,887 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 20:01:05,888 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 20:01:05,889 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 20:01:05,890 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 20:01:05,896 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 20:01:05,898 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 20:01:05,899 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 20:01:05,901 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 20:01:05,905 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 20:01:05,908 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 20:01:05,913 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 20:01:05,915 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 20:01:05,917 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 20:01:05,917 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 20:01:05,927 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 20:01:05,927 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 20:01:05,928 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 20:01:05,929 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 20:01:05,931 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 20:01:05,935 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 20:01:05,935 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 20:01:05,936 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 20:01:05,937 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 20:01:05,940 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 20:01:05,941 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 20:01:05,942 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 20:01:05,942 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 20:01:05,943 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 20:01:05,943 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 20:01:05,945 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 20:01:05,946 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 20:01:05,947 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 20:01:05,998 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 20:01:05,998 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 20:01:06,002 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 20:01:06,003 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 20:01:06,003 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 20:01:06,003 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 20:01:06,004 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 20:01:06,004 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 20:01:06,004 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 20:01:06,004 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 20:01:06,005 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 20:01:06,005 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 20:01:06,006 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 20:01:06,006 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 20:01:06,006 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 20:01:06,006 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 20:01:06,006 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 20:01:06,007 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 20:01:06,007 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 20:01:06,007 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 20:01:06,007 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 20:01:06,008 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 20:01:06,008 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 20:01:06,008 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 20:01:06,008 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 20:01:06,008 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 20:01:06,009 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 20:01:06,009 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 20:01:06,009 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 20:01:06,009 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 20:01:06,385 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 20:01:06,410 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 20:01:06,413 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 20:01:06,414 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 20:01:06,415 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 20:01:06,416 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/verifythis/duplets.c [2020-10-28 20:01:06,508 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b1cc9d734/4b5d9c71b2584a4d833f609458521644/FLAG184790e2b [2020-10-28 20:01:07,195 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 20:01:07,195 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/verifythis/duplets.c [2020-10-28 20:01:07,206 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b1cc9d734/4b5d9c71b2584a4d833f609458521644/FLAG184790e2b [2020-10-28 20:01:07,542 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b1cc9d734/4b5d9c71b2584a4d833f609458521644 [2020-10-28 20:01:07,547 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 20:01:07,556 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 20:01:07,560 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 20:01:07,560 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 20:01:07,564 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 20:01:07,565 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:01:07" (1/1) ... [2020-10-28 20:01:07,571 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@267a7ce5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:01:07, skipping insertion in model container [2020-10-28 20:01:07,572 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:01:07" (1/1) ... [2020-10-28 20:01:07,580 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 20:01:07,602 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 20:01:07,792 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 20:01:07,808 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 20:01:07,836 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 20:01:07,865 INFO L208 MainTranslator]: Completed translation [2020-10-28 20:01:07,867 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:01:07 WrapperNode [2020-10-28 20:01:07,867 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 20:01:07,869 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 20:01:07,869 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 20:01:07,869 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 20:01:07,882 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:01:07" (1/1) ... [2020-10-28 20:01:07,883 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:01:07" (1/1) ... [2020-10-28 20:01:07,893 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:01:07" (1/1) ... [2020-10-28 20:01:07,893 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:01:07" (1/1) ... [2020-10-28 20:01:07,909 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:01:07" (1/1) ... [2020-10-28 20:01:07,919 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:01:07" (1/1) ... [2020-10-28 20:01:07,921 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:01:07" (1/1) ... [2020-10-28 20:01:07,926 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 20:01:07,930 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 20:01:07,930 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 20:01:07,931 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 20:01:07,932 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:01:07" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 20:01:08,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 20:01:08,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 20:01:08,007 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 20:01:08,007 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-28 20:01:08,007 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 20:01:08,008 INFO L138 BoogieDeclarations]: Found implementation of procedure mkdup [2020-10-28 20:01:08,008 INFO L138 BoogieDeclarations]: Found implementation of procedure finddup [2020-10-28 20:01:08,008 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 20:01:08,008 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-10-28 20:01:08,008 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-28 20:01:08,008 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-28 20:01:08,009 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 20:01:08,009 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 20:01:08,009 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 20:01:08,009 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 20:01:08,009 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-28 20:01:08,009 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 20:01:08,010 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 20:01:08,010 INFO L130 BoogieDeclarations]: Found specification of procedure mkdup [2020-10-28 20:01:08,010 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 20:01:08,010 INFO L130 BoogieDeclarations]: Found specification of procedure finddup [2020-10-28 20:01:08,010 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 20:01:08,010 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 20:01:08,011 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-28 20:01:08,011 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-10-28 20:01:08,011 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 20:01:08,011 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 20:01:08,011 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 20:01:08,011 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 20:01:08,625 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 20:01:08,625 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-28 20:01:08,628 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:01:08 BoogieIcfgContainer [2020-10-28 20:01:08,628 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 20:01:08,632 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 20:01:08,633 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 20:01:08,637 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 20:01:08,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 08:01:07" (1/3) ... [2020-10-28 20:01:08,639 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c659ed1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 08:01:08, skipping insertion in model container [2020-10-28 20:01:08,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:01:07" (2/3) ... [2020-10-28 20:01:08,640 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c659ed1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 08:01:08, skipping insertion in model container [2020-10-28 20:01:08,640 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:01:08" (3/3) ... [2020-10-28 20:01:08,642 INFO L111 eAbstractionObserver]: Analyzing ICFG duplets.c [2020-10-28 20:01:08,656 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 20:01:08,662 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 20:01:08,678 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 20:01:08,724 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 20:01:08,724 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 20:01:08,725 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 20:01:08,725 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 20:01:08,725 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 20:01:08,725 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 20:01:08,725 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 20:01:08,725 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 20:01:08,751 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states. [2020-10-28 20:01:08,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-28 20:01:08,761 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 20:01:08,762 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 20:01:08,763 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 20:01:08,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 20:01:08,772 INFO L82 PathProgramCache]: Analyzing trace with hash 960128656, now seen corresponding path program 1 times [2020-10-28 20:01:08,784 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 20:01:08,786 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1591143470] [2020-10-28 20:01:08,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 20:01:08,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:01:09,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:09,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:09,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:09,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:09,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:01:09,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 20:01:09,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 20:01:09,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 481 [2020-10-28 20:01:09,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:01:09,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:01:09,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:01:09,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-28 20:01:09,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:01:09,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 20:01:09,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 20:01:09,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:01:09,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:09,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:01:09,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 20:01:09,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:01:09,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-28 20:01:09,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:01:09,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:01:09,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:01:09,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:01:09,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:01:09,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 20:01:09,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 20:01:09,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:01:09,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:09,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:09,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:01:09,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:01:09,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 20:01:09,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 20:01:09,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:01:09,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:01:09,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:01:09,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 20:01:09,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:01:09,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 20:01:09,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 20:01:09,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:01:09,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:09,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:01:09,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 20:01:09,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:01:09,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 20:01:09,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:01:09,645 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:01:09,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:01:09,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:01:09,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:01:09,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 20:01:09,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 20:01:09,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:01:09,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:09,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:09,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:09,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:01:09,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 20:01:09,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 20:01:09,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-28 20:01:09,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:01:09,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:01:09,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:01:09,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 20:01:09,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:01:09,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-28 20:01:09,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 20:01:09,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:01:09,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:09,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:01:09,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:01:09,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:01:09,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 20:01:09,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:01:09,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:01:09,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:01:09,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 20:01:09,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:01:09,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 20:01:09,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 20:01:09,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:01:09,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:09,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:09,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:01:09,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:01:09,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 20:01:09,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 20:01:09,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:01:09,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:01:09,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:01:09,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 20:01:09,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:01:09,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 20:01:09,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 20:01:09,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:01:09,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:09,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:09,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:01:09,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:01:09,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 20:01:09,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 20:01:09,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:01:09,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:01:09,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:01:09,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 20:01:09,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:01:09,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 20:01:09,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-28 20:01:09,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:01:09,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:09,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:01:09,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 20:01:09,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:01:09,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 20:01:09,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:01:09,842 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:01:09,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:01:09,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 20:01:09,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:01:09,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:01:09,858 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-28 20:01:09,859 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1591143470] [2020-10-28 20:01:09,861 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 20:01:09,862 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-10-28 20:01:09,863 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74028369] [2020-10-28 20:01:09,869 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 20:01:09,870 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 20:01:09,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 20:01:09,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 20:01:09,889 INFO L87 Difference]: Start difference. First operand 63 states. Second operand 4 states. [2020-10-28 20:01:10,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 20:01:10,199 INFO L93 Difference]: Finished difference Result 118 states and 159 transitions. [2020-10-28 20:01:10,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 20:01:10,201 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 50 [2020-10-28 20:01:10,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 20:01:10,212 INFO L225 Difference]: With dead ends: 118 [2020-10-28 20:01:10,212 INFO L226 Difference]: Without dead ends: 57 [2020-10-28 20:01:10,217 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 20:01:10,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-28 20:01:10,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 55. [2020-10-28 20:01:10,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-28 20:01:10,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 66 transitions. [2020-10-28 20:01:10,275 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 66 transitions. Word has length 50 [2020-10-28 20:01:10,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 20:01:10,276 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 66 transitions. [2020-10-28 20:01:10,276 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 20:01:10,276 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 66 transitions. [2020-10-28 20:01:10,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-28 20:01:10,279 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 20:01:10,280 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 20:01:10,280 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 20:01:10,280 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 20:01:10,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 20:01:10,281 INFO L82 PathProgramCache]: Analyzing trace with hash 771521296, now seen corresponding path program 1 times [2020-10-28 20:01:10,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 20:01:10,281 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1376466191] [2020-10-28 20:01:10,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 20:01:10,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:01:10,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:10,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:11,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:01:11,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 20:01:11,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 20:01:11,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1502 [2020-10-28 20:01:11,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:01:11,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:01:11,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 20:01:11,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-28 20:01:11,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-28 20:01:11,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 20:01:11,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 20:01:11,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:01:11,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:11,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:01:11,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 20:01:11,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:01:11,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 20:01:11,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:01:11,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:01:11,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:01:11,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:01:11,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:01:11,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 20:01:11,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 20:01:11,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:01:11,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:11,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:01:11,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:01:11,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:01:11,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 20:01:11,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:01:11,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:01:11,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:01:11,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:01:11,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:01:11,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:01:11,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 20:01:11,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:01:11,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:11,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:01:11,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 20:01:11,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:01:11,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 20:01:11,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:01:11,950 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:01:11,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:01:11,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:01:11,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:01:11,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:01:11,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 20:01:11,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:01:11,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:11,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:12,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:01:12,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 20:01:12,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 20:01:12,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 209 [2020-10-28 20:01:12,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:01:12,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:01:12,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 20:01:12,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:01:12,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 20:01:12,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:01:12,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 20:01:12,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:01:12,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:12,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:01:12,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:01:12,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:01:12,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 20:01:12,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:01:12,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:01:12,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 20:01:12,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:01:12,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 20:01:12,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 20:01:12,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 20:01:12,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:01:12,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:12,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:01:12,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:01:12,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:01:12,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 20:01:12,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:01:12,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:01:12,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 20:01:12,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:01:12,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 20:01:12,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:01:12,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 20:01:12,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:01:12,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:12,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:01:12,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:01:12,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:01:12,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 20:01:12,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:01:12,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:01:12,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 20:01:12,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:01:12,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 20:01:12,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:01:12,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-28 20:01:12,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:01:12,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:12,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:01:12,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 20:01:12,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:01:12,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 20:01:12,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:01:12,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:01:12,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 20:01:12,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 20:01:12,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 20:01:12,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:01:12,351 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-28 20:01:12,352 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1376466191] [2020-10-28 20:01:12,353 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 20:01:12,353 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-28 20:01:12,353 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129252278] [2020-10-28 20:01:12,354 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 20:01:12,355 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 20:01:12,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 20:01:12,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-28 20:01:12,356 INFO L87 Difference]: Start difference. First operand 55 states and 66 transitions. Second operand 11 states. [2020-10-28 20:01:13,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 20:01:13,307 INFO L93 Difference]: Finished difference Result 86 states and 105 transitions. [2020-10-28 20:01:13,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 20:01:13,307 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 50 [2020-10-28 20:01:13,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 20:01:13,310 INFO L225 Difference]: With dead ends: 86 [2020-10-28 20:01:13,310 INFO L226 Difference]: Without dead ends: 64 [2020-10-28 20:01:13,314 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380 [2020-10-28 20:01:13,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-28 20:01:13,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 56. [2020-10-28 20:01:13,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-28 20:01:13,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 67 transitions. [2020-10-28 20:01:13,343 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 67 transitions. Word has length 50 [2020-10-28 20:01:13,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 20:01:13,346 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 67 transitions. [2020-10-28 20:01:13,346 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 20:01:13,346 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 67 transitions. [2020-10-28 20:01:13,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-28 20:01:13,350 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 20:01:13,350 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 20:01:13,351 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 20:01:13,351 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 20:01:13,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 20:01:13,352 INFO L82 PathProgramCache]: Analyzing trace with hash 1753049532, now seen corresponding path program 1 times [2020-10-28 20:01:13,352 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 20:01:13,353 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1543657155] [2020-10-28 20:01:13,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 20:01:13,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:01:13,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:13,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:01:13,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-28 20:01:13,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:01:13,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 348 [2020-10-28 20:01:13,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:01:13,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:01:13,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 20:01:13,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 62 [2020-10-28 20:01:13,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 20:01:13,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:01:13,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 20:01:13,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:01:13,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:13,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:01:13,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 20:01:13,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:01:13,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 20:01:13,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:01:13,812 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:01:13,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:01:13,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:01:13,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:01:13,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:01:13,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 20:01:13,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:01:13,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:13,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:01:13,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:01:13,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:01:13,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 20:01:13,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:01:13,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:01:13,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:01:13,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:01:13,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:01:13,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:01:13,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 20:01:13,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:01:13,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:13,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:01:13,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 20:01:13,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:01:13,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 20:01:13,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:01:13,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:01:13,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:01:13,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:01:13,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:01:13,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:01:13,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 20:01:13,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:01:13,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:13,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:01:13,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 20:01:13,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:01:13,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 20:01:13,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:01:13,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:01:13,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:01:13,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:01:13,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:01:13,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:01:13,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 20:01:13,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:01:13,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:13,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:01:13,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:01:13,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:01:13,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 20:01:13,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:01:13,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:01:13,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:01:13,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:01:13,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:01:13,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:01:13,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 20:01:13,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:01:13,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:13,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:01:13,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:01:13,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:01:13,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 20:01:13,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:01:13,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:01:13,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:01:13,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:01:13,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:01:13,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:01:13,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 20:01:13,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:01:13,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:13,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:01:13,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:01:13,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:01:13,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 20:01:13,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:01:13,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:01:13,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:01:13,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:01:13,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:01:13,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:01:13,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-28 20:01:13,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:01:13,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:13,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:01:13,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 20:01:13,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:01:13,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 20:01:13,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:01:13,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:01:13,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 20:01:13,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:01:13,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 20:01:13,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:01:13,927 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-28 20:01:13,927 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1543657155] [2020-10-28 20:01:13,927 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 20:01:13,928 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 20:01:13,928 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266327634] [2020-10-28 20:01:13,928 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 20:01:13,929 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 20:01:13,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 20:01:13,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-28 20:01:13,930 INFO L87 Difference]: Start difference. First operand 56 states and 67 transitions. Second operand 9 states. [2020-10-28 20:01:14,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 20:01:14,386 INFO L93 Difference]: Finished difference Result 77 states and 93 transitions. [2020-10-28 20:01:14,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 20:01:14,387 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 51 [2020-10-28 20:01:14,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 20:01:14,389 INFO L225 Difference]: With dead ends: 77 [2020-10-28 20:01:14,389 INFO L226 Difference]: Without dead ends: 74 [2020-10-28 20:01:14,390 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2020-10-28 20:01:14,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-28 20:01:14,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 64. [2020-10-28 20:01:14,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-10-28 20:01:14,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 75 transitions. [2020-10-28 20:01:14,403 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 75 transitions. Word has length 51 [2020-10-28 20:01:14,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 20:01:14,404 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 75 transitions. [2020-10-28 20:01:14,404 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 20:01:14,404 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 75 transitions. [2020-10-28 20:01:14,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-28 20:01:14,405 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 20:01:14,405 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 20:01:14,406 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 20:01:14,406 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 20:01:14,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 20:01:14,406 INFO L82 PathProgramCache]: Analyzing trace with hash 1569139005, now seen corresponding path program 1 times [2020-10-28 20:01:14,407 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 20:01:14,407 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [985636408] [2020-10-28 20:01:14,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 20:01:14,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:01:14,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:14,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:16,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:01:16,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 20:01:16,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 20:01:16,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1982 [2020-10-28 20:01:16,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:01:16,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:01:16,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-28 20:01:16,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-28 20:01:16,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-28 20:01:16,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:01:16,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 20:01:16,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:01:16,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:16,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:01:16,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 20:01:16,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:01:16,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 20:01:16,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:01:16,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:01:16,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:01:16,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:01:16,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:01:16,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 20:01:16,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 20:01:16,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:01:16,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:16,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:01:16,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:01:16,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:01:16,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 20:01:16,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:01:16,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:01:16,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:01:16,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:01:16,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:01:16,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 20:01:16,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 20:01:16,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:01:16,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:16,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:01:16,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 20:01:16,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:01:16,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 20:01:16,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:01:16,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:01:16,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:01:16,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:01:16,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:01:16,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 20:01:16,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 20:01:16,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:01:16,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:16,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:01:16,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 20:01:16,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:01:16,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-28 20:01:16,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:01:16,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:01:16,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 20:01:16,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:01:16,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 20:01:16,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:01:16,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 20:01:16,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:01:16,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:16,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:01:16,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:01:16,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:01:16,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 20:01:16,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:01:16,893 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:01:16,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 20:01:16,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:01:16,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 20:01:16,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 20:01:16,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 20:01:16,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:01:16,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:16,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:01:16,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:01:16,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:01:16,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 20:01:16,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:01:16,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:01:16,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 20:01:16,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:01:16,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 20:01:16,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:01:17,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 20:01:17,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:01:17,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:17,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:01:17,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:01:17,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:01:17,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 20:01:17,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:01:17,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:01:17,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 20:01:17,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:01:17,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 20:01:17,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:01:17,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-28 20:01:17,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:01:17,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:17,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:17,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:01:17,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 20:01:17,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 20:01:17,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-28 20:01:17,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:01:17,125 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:01:17,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 20:01:17,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 20:01:17,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 20:01:17,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:01:17,198 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-28 20:01:17,198 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [985636408] [2020-10-28 20:01:17,198 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 20:01:17,199 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-28 20:01:17,199 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656755728] [2020-10-28 20:01:17,199 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-28 20:01:17,200 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 20:01:17,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-28 20:01:17,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2020-10-28 20:01:17,201 INFO L87 Difference]: Start difference. First operand 64 states and 75 transitions. Second operand 15 states. [2020-10-28 20:01:17,740 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 54 [2020-10-28 20:01:17,903 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 57 [2020-10-28 20:01:18,042 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 54 [2020-10-28 20:01:18,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 20:01:18,931 INFO L93 Difference]: Finished difference Result 122 states and 149 transitions. [2020-10-28 20:01:18,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-28 20:01:18,932 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 53 [2020-10-28 20:01:18,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 20:01:18,934 INFO L225 Difference]: With dead ends: 122 [2020-10-28 20:01:18,935 INFO L226 Difference]: Without dead ends: 75 [2020-10-28 20:01:18,936 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=177, Invalid=879, Unknown=0, NotChecked=0, Total=1056 [2020-10-28 20:01:18,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-28 20:01:18,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 65. [2020-10-28 20:01:18,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-28 20:01:18,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 76 transitions. [2020-10-28 20:01:18,948 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 76 transitions. Word has length 53 [2020-10-28 20:01:18,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 20:01:18,949 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 76 transitions. [2020-10-28 20:01:18,949 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-28 20:01:18,949 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 76 transitions. [2020-10-28 20:01:18,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-28 20:01:18,950 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 20:01:18,951 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 20:01:18,951 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 20:01:18,951 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 20:01:18,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 20:01:18,951 INFO L82 PathProgramCache]: Analyzing trace with hash 1285072326, now seen corresponding path program 1 times [2020-10-28 20:01:18,952 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 20:01:18,952 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1837946705] [2020-10-28 20:01:18,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 20:01:18,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:01:18,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:19,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:19,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:19,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:20,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:23,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:01:23,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-28 20:01:23,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 20:01:23,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-28 20:01:23,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:01:23,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:01:23,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 20:01:23,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-28 20:01:23,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 20:01:23,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:01:24,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 20:01:24,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:01:24,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:24,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:01:24,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 20:01:24,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:01:24,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 20:01:24,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:01:24,025 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:01:24,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:01:24,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:01:24,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:01:24,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:01:24,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 20:01:24,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:01:24,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:24,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:01:24,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:01:24,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:01:24,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 20:01:24,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:01:24,033 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:01:24,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:01:24,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:01:24,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:01:24,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:01:24,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 20:01:24,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:01:24,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:24,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:01:24,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 20:01:24,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:01:24,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 20:01:24,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:01:24,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:01:24,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:01:24,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:01:24,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:01:24,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:01:24,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 20:01:24,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:01:24,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:24,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:01:24,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 20:01:24,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:01:24,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 20:01:24,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:01:24,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:01:24,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:01:24,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:01:24,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:01:24,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:01:24,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 20:01:24,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:01:24,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:24,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:01:24,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:01:24,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:01:24,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 20:01:24,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:01:24,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:01:24,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:01:24,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:01:24,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:01:24,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:01:24,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 20:01:24,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:01:24,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:24,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:01:24,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:01:24,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:01:24,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 20:01:24,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:01:24,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:01:24,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:01:24,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:01:24,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:01:24,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:01:24,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 20:01:24,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:01:24,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:24,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:01:24,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:01:24,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:01:24,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 20:01:24,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:01:24,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:01:24,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:01:24,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:01:24,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:01:24,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:01:24,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-28 20:01:24,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:01:24,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:24,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:01:24,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 20:01:24,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:01:24,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 20:01:24,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:01:24,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:01:24,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 20:01:24,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 20:01:24,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 20:01:24,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:01:24,166 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-28 20:01:24,167 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1837946705] [2020-10-28 20:01:24,167 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 20:01:24,167 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 20:01:24,167 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033865201] [2020-10-28 20:01:24,169 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 20:01:24,169 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 20:01:24,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 20:01:24,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-28 20:01:24,170 INFO L87 Difference]: Start difference. First operand 65 states and 76 transitions. Second operand 7 states. [2020-10-28 20:01:24,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 20:01:24,655 INFO L93 Difference]: Finished difference Result 90 states and 108 transitions. [2020-10-28 20:01:24,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 20:01:24,655 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 56 [2020-10-28 20:01:24,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 20:01:24,657 INFO L225 Difference]: With dead ends: 90 [2020-10-28 20:01:24,657 INFO L226 Difference]: Without dead ends: 68 [2020-10-28 20:01:24,658 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2020-10-28 20:01:24,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-28 20:01:24,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-10-28 20:01:24,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-28 20:01:24,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 80 transitions. [2020-10-28 20:01:24,681 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 80 transitions. Word has length 56 [2020-10-28 20:01:24,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 20:01:24,682 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 80 transitions. [2020-10-28 20:01:24,682 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 20:01:24,682 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 80 transitions. [2020-10-28 20:01:24,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-28 20:01:24,684 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 20:01:24,684 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 20:01:24,684 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 20:01:24,684 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 20:01:24,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 20:01:24,685 INFO L82 PathProgramCache]: Analyzing trace with hash -956987836, now seen corresponding path program 1 times [2020-10-28 20:01:24,685 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 20:01:24,685 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [37516251] [2020-10-28 20:01:24,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 20:01:24,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:01:24,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:24,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:24,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:24,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:25,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:26,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:26,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:28,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:01:28,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-28 20:01:28,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 20:01:28,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3352 [2020-10-28 20:01:28,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:01:28,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:01:28,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-28 20:01:28,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-28 20:01:28,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-28 20:01:28,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:01:28,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 20:01:28,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:01:28,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:28,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:01:28,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 20:01:28,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:01:28,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 20:01:28,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:01:28,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:01:28,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:01:28,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:01:28,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:01:28,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:01:28,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 20:01:28,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:01:28,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:28,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:01:28,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:01:28,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:01:28,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 20:01:28,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:01:28,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:01:28,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:01:28,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:01:28,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:01:28,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:01:28,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 20:01:28,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:01:28,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:28,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:01:28,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 20:01:28,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:01:28,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 20:01:28,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:01:28,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:01:28,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:01:28,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:01:28,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:01:28,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:01:28,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 20:01:28,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:01:28,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:28,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:28,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:01:28,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 20:01:28,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 20:01:28,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-28 20:01:28,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:01:28,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:01:28,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 20:01:28,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:01:28,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 20:01:28,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:01:28,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 20:01:28,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:01:28,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:28,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:01:28,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:01:28,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:01:28,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 20:01:28,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:01:28,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:01:28,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 20:01:28,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:01:28,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 20:01:28,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:01:28,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 20:01:28,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:01:28,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:28,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:01:28,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:01:28,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:01:28,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 20:01:28,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:01:28,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:01:28,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 20:01:28,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:01:28,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 20:01:28,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:01:28,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 20:01:28,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:01:28,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:28,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:01:28,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:01:28,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:01:28,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 20:01:28,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:01:28,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:01:28,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 20:01:28,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:01:28,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 20:01:28,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:01:28,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-28 20:01:28,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:01:28,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:28,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:01:28,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 20:01:28,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:01:28,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 20:01:28,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:01:28,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:01:28,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 20:01:28,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:01:28,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 20:01:28,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:01:28,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-28 20:01:28,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:01:28,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:28,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:01:28,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:01:28,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:01:28,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 20:01:28,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:01:28,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:01:28,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 20:01:28,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:01:28,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 20:01:28,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:01:28,562 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-28 20:01:28,563 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [37516251] [2020-10-28 20:01:28,563 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 20:01:28,563 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-28 20:01:28,563 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860203490] [2020-10-28 20:01:28,564 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-28 20:01:28,564 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 20:01:28,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-28 20:01:28,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2020-10-28 20:01:28,565 INFO L87 Difference]: Start difference. First operand 68 states and 80 transitions. Second operand 16 states. [2020-10-28 20:01:29,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 20:01:29,804 INFO L93 Difference]: Finished difference Result 105 states and 128 transitions. [2020-10-28 20:01:29,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-28 20:01:29,805 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 58 [2020-10-28 20:01:29,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 20:01:29,806 INFO L225 Difference]: With dead ends: 105 [2020-10-28 20:01:29,806 INFO L226 Difference]: Without dead ends: 90 [2020-10-28 20:01:29,809 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=106, Invalid=650, Unknown=0, NotChecked=0, Total=756 [2020-10-28 20:01:29,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-28 20:01:29,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 82. [2020-10-28 20:01:29,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-28 20:01:29,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 97 transitions. [2020-10-28 20:01:29,841 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 97 transitions. Word has length 58 [2020-10-28 20:01:29,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 20:01:29,841 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 97 transitions. [2020-10-28 20:01:29,841 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-28 20:01:29,841 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 97 transitions. [2020-10-28 20:01:29,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-28 20:01:29,844 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 20:01:29,844 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 20:01:29,844 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 20:01:29,844 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 20:01:29,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 20:01:29,844 INFO L82 PathProgramCache]: Analyzing trace with hash 2094365383, now seen corresponding path program 2 times [2020-10-28 20:01:29,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 20:01:29,845 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1729590336] [2020-10-28 20:01:29,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 20:01:29,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:01:29,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:30,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:30,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:30,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:31,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:34,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:01:34,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-28 20:01:34,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 20:01:34,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 20:01:34,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:01:34,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:01:34,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-28 20:01:34,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-28 20:01:34,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-28 20:01:34,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:01:34,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 20:01:34,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:01:34,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:34,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:01:34,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 20:01:34,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:01:34,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 20:01:34,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:01:34,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:01:34,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:01:34,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:01:34,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:01:34,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:01:34,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 20:01:34,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:01:34,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:34,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:01:34,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:01:34,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:01:34,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 20:01:34,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:01:34,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:01:34,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:01:34,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:01:34,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:01:34,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:01:35,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 20:01:35,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:01:35,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:35,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:01:35,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 20:01:35,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:01:35,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 20:01:35,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:01:35,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:01:35,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:01:35,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:01:35,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:01:35,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:01:35,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 20:01:35,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:01:35,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:35,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:01:35,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 20:01:35,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:01:35,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-28 20:01:35,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:01:35,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:01:35,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-28 20:01:35,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:01:35,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 20:01:35,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:01:35,426 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 34 [2020-10-28 20:01:35,569 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 33 [2020-10-28 20:01:35,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 20:01:35,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:01:35,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:35,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:01:35,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:01:35,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:01:35,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 20:01:35,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:01:35,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:01:35,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 20:01:35,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:01:35,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 20:01:35,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:01:35,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 20:01:35,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:01:35,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:35,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:01:35,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:01:35,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:01:35,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 20:01:35,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:01:35,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:01:35,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 20:01:35,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:01:35,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 20:01:35,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:01:35,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 20:01:35,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:01:35,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:35,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:01:35,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:01:35,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:01:35,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 20:01:35,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:01:35,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:01:35,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 20:01:35,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:01:35,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 20:01:35,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:01:35,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-28 20:01:35,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:01:35,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:35,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:35,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:35,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:35,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:36,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:01:36,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-28 20:01:36,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 20:01:36,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 510 [2020-10-28 20:01:36,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:01:36,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:01:36,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 20:01:36,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 20:01:36,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-28 20:01:36,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:01:36,665 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-28 20:01:36,665 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1729590336] [2020-10-28 20:01:36,665 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 20:01:36,665 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-28 20:01:36,666 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182577943] [2020-10-28 20:01:36,666 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-28 20:01:36,666 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 20:01:36,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-28 20:01:36,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2020-10-28 20:01:36,667 INFO L87 Difference]: Start difference. First operand 82 states and 97 transitions. Second operand 19 states. [2020-10-28 20:01:37,447 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 64 [2020-10-28 20:01:37,663 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 63 [2020-10-28 20:01:37,886 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 72 [2020-10-28 20:01:38,168 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 64 [2020-10-28 20:01:38,333 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 69 [2020-10-28 20:01:38,593 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2020-10-28 20:01:38,842 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2020-10-28 20:01:39,083 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 63 [2020-10-28 20:01:39,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 20:01:39,965 INFO L93 Difference]: Finished difference Result 137 states and 170 transitions. [2020-10-28 20:01:39,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-28 20:01:39,965 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 59 [2020-10-28 20:01:39,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 20:01:39,967 INFO L225 Difference]: With dead ends: 137 [2020-10-28 20:01:39,967 INFO L226 Difference]: Without dead ends: 115 [2020-10-28 20:01:39,968 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=221, Invalid=1185, Unknown=0, NotChecked=0, Total=1406 [2020-10-28 20:01:39,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-10-28 20:01:39,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 84. [2020-10-28 20:01:39,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-10-28 20:01:39,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 99 transitions. [2020-10-28 20:01:39,988 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 99 transitions. Word has length 59 [2020-10-28 20:01:39,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 20:01:39,989 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 99 transitions. [2020-10-28 20:01:39,989 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-28 20:01:39,989 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 99 transitions. [2020-10-28 20:01:39,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-28 20:01:39,990 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 20:01:39,990 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 20:01:39,991 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 20:01:39,991 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 20:01:39,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 20:01:39,991 INFO L82 PathProgramCache]: Analyzing trace with hash -202573274, now seen corresponding path program 3 times [2020-10-28 20:01:39,991 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 20:01:39,992 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1233948375] [2020-10-28 20:01:39,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 20:01:40,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:01:40,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:40,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:40,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:41,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:43,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:44,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:01:44,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-28 20:01:44,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 20:01:44,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4945 [2020-10-28 20:01:44,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:01:44,965 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:01:44,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 20:01:44,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-28 20:01:44,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 20:01:44,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:01:45,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 20:01:45,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:01:45,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:45,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:01:45,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 20:01:45,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:01:45,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 20:01:45,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:01:45,011 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:01:45,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:01:45,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:01:45,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:01:45,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:01:45,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 20:01:45,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:01:45,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:45,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:01:45,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:01:45,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:01:45,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 20:01:45,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:01:45,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:01:45,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:01:45,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:01:45,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:01:45,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:01:45,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 20:01:45,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:01:45,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:45,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:01:45,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 20:01:45,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:01:45,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 20:01:45,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:01:45,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:01:45,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:01:45,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:01:45,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:01:45,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:01:45,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 20:01:45,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:01:45,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:45,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:01:45,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 20:01:45,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:01:45,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 20:01:45,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:01:45,037 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:01:45,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:01:45,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:01:45,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:01:45,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:01:45,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 20:01:45,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:01:45,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:45,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:01:45,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:01:45,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:01:45,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 20:01:45,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:01:45,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:01:45,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:01:45,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:01:45,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:01:45,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:01:45,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 20:01:45,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:01:45,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:45,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:01:45,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:01:45,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:01:45,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 20:01:45,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:01:45,050 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:01:45,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:01:45,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:01:45,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:01:45,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:01:45,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 20:01:45,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:01:45,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:45,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:01:45,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:01:45,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:01:45,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 20:01:45,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:01:45,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:01:45,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:01:45,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:01:45,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:01:45,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:01:45,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-28 20:01:45,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:01:45,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:45,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:45,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:01:45,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 20:01:45,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 20:01:45,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-28 20:01:45,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:01:45,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:01:45,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 20:01:45,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 20:01:45,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 20:01:45,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:01:45,174 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-28 20:01:45,174 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1233948375] [2020-10-28 20:01:45,175 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 20:01:45,175 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 20:01:45,175 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509394334] [2020-10-28 20:01:45,175 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 20:01:45,176 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 20:01:45,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 20:01:45,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-28 20:01:45,176 INFO L87 Difference]: Start difference. First operand 84 states and 99 transitions. Second operand 9 states. [2020-10-28 20:01:45,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 20:01:45,887 INFO L93 Difference]: Finished difference Result 155 states and 190 transitions. [2020-10-28 20:01:45,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 20:01:45,890 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 62 [2020-10-28 20:01:45,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 20:01:45,894 INFO L225 Difference]: With dead ends: 155 [2020-10-28 20:01:45,895 INFO L226 Difference]: Without dead ends: 114 [2020-10-28 20:01:45,896 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=113, Invalid=229, Unknown=0, NotChecked=0, Total=342 [2020-10-28 20:01:45,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-10-28 20:01:45,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 99. [2020-10-28 20:01:45,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-28 20:01:45,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 119 transitions. [2020-10-28 20:01:45,931 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 119 transitions. Word has length 62 [2020-10-28 20:01:45,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 20:01:45,931 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 119 transitions. [2020-10-28 20:01:45,931 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 20:01:45,931 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 119 transitions. [2020-10-28 20:01:45,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-28 20:01:45,932 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 20:01:45,933 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 20:01:45,933 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 20:01:45,933 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 20:01:45,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 20:01:45,933 INFO L82 PathProgramCache]: Analyzing trace with hash 113043580, now seen corresponding path program 1 times [2020-10-28 20:01:45,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 20:01:45,934 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [756349950] [2020-10-28 20:01:45,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 20:01:45,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:01:45,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:46,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:46,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:01:46,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-28 20:01:46,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 20:01:46,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 792 [2020-10-28 20:01:46,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:01:46,755 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:01:46,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 20:01:46,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-28 20:01:46,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-28 20:01:46,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:01:46,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 20:01:46,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:01:46,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:46,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:01:46,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 20:01:46,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:01:46,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 20:01:46,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:01:46,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:01:46,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:01:46,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:01:46,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:01:46,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:01:46,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 20:01:46,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:01:46,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:46,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:01:46,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:01:46,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:01:46,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 20:01:46,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:01:46,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:01:46,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:01:46,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:01:46,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:01:46,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:01:46,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 20:01:46,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:01:46,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:46,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:01:46,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 20:01:46,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:01:46,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 20:01:46,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:01:46,900 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:01:46,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:01:46,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:01:46,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:01:46,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:01:46,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 20:01:46,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:01:46,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:46,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:01:46,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 20:01:46,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:01:46,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 20:01:46,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:01:46,913 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:01:46,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:01:46,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:01:46,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:01:46,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:01:46,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 20:01:46,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:01:46,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:46,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:01:46,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:01:46,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:01:46,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 20:01:46,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:01:46,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:01:46,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:01:46,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:01:46,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:01:46,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:01:46,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 20:01:46,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:01:46,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:46,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:01:46,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:01:46,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:01:46,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 20:01:46,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:01:46,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:01:46,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:01:46,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:01:46,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:01:46,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:01:46,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 20:01:46,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:01:46,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:46,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:01:46,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:01:46,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:01:46,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 20:01:46,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:01:46,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:01:46,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:01:46,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:01:46,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:01:46,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:01:46,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-28 20:01:46,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:01:46,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:46,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:01:46,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 20:01:46,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:01:46,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 20:01:46,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:01:46,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:01:46,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 20:01:46,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:01:46,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 20:01:46,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:01:47,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-28 20:01:47,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:01:47,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:47,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:01:47,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:01:47,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:01:47,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 20:01:47,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:01:47,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:01:47,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 20:01:47,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:01:47,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 20:01:47,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:01:47,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-28 20:01:47,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:01:47,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:47,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:01:47,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:01:47,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:01:47,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 20:01:47,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:01:47,036 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:01:47,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 20:01:47,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:01:47,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 20:01:47,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:01:47,044 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-10-28 20:01:47,044 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [756349950] [2020-10-28 20:01:47,044 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 20:01:47,044 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-28 20:01:47,044 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497030012] [2020-10-28 20:01:47,045 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 20:01:47,045 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 20:01:47,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 20:01:47,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-28 20:01:47,046 INFO L87 Difference]: Start difference. First operand 99 states and 119 transitions. Second operand 11 states. [2020-10-28 20:01:47,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 20:01:47,897 INFO L93 Difference]: Finished difference Result 118 states and 143 transitions. [2020-10-28 20:01:47,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 20:01:47,897 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 65 [2020-10-28 20:01:47,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 20:01:47,899 INFO L225 Difference]: With dead ends: 118 [2020-10-28 20:01:47,900 INFO L226 Difference]: Without dead ends: 115 [2020-10-28 20:01:47,901 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2020-10-28 20:01:47,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-10-28 20:01:47,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 109. [2020-10-28 20:01:47,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-10-28 20:01:47,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 132 transitions. [2020-10-28 20:01:47,920 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 132 transitions. Word has length 65 [2020-10-28 20:01:47,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 20:01:47,921 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 132 transitions. [2020-10-28 20:01:47,921 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 20:01:47,921 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 132 transitions. [2020-10-28 20:01:47,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-28 20:01:47,922 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 20:01:47,922 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 20:01:47,922 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 20:01:47,922 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 20:01:47,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 20:01:47,923 INFO L82 PathProgramCache]: Analyzing trace with hash 170301882, now seen corresponding path program 1 times [2020-10-28 20:01:47,923 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 20:01:47,923 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [601563804] [2020-10-28 20:01:47,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 20:01:47,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:01:47,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:48,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:48,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:01:48,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-28 20:01:48,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 20:01:48,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 377 [2020-10-28 20:01:48,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:01:48,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:01:48,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 20:01:48,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-28 20:01:48,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-28 20:01:48,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:01:48,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 20:01:48,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:01:48,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:48,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:01:48,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 20:01:48,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:01:48,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 20:01:48,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:01:48,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:01:48,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:01:48,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:01:48,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:01:48,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:01:48,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 20:01:48,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:01:48,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:48,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:01:48,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:01:48,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:01:48,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 20:01:48,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:01:48,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:01:48,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:01:48,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:01:48,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:01:48,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:01:48,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 20:01:48,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:01:48,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:48,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:01:48,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 20:01:48,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:01:48,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 20:01:48,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:01:48,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:01:48,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:01:48,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:01:48,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:01:48,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:01:48,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 20:01:48,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:01:48,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:48,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:01:48,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 20:01:48,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:01:48,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 20:01:48,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:01:48,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:01:48,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:01:48,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:01:48,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:01:48,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:01:48,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 20:01:48,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:01:48,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:48,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:01:48,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:01:48,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:01:48,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 20:01:48,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:01:48,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:01:48,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:01:48,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:01:48,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:01:48,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:01:48,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 20:01:48,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:01:48,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:48,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:01:48,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:01:48,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:01:48,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 20:01:48,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:01:48,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:01:48,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:01:48,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:01:48,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:01:48,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:01:48,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 20:01:48,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:01:48,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:48,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:01:48,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:01:48,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:01:48,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 20:01:48,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:01:48,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:01:48,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:01:48,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:01:48,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:01:48,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:01:48,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-28 20:01:48,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:01:48,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:48,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:01:48,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 20:01:48,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:01:48,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 20:01:48,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:01:48,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:01:48,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 20:01:48,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:01:48,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 20:01:48,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:01:48,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-28 20:01:48,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:01:48,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:48,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:01:48,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:01:48,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:01:48,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 20:01:48,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:01:48,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:01:48,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 20:01:48,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:01:48,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 20:01:48,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:01:48,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-28 20:01:48,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:01:48,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:48,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:01:48,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:01:48,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:01:48,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 20:01:48,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:01:48,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:01:48,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 20:01:48,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:01:48,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 20:01:48,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:01:48,596 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-10-28 20:01:48,597 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [601563804] [2020-10-28 20:01:48,597 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 20:01:48,597 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-28 20:01:48,597 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000943986] [2020-10-28 20:01:48,598 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 20:01:48,598 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 20:01:48,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 20:01:48,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-10-28 20:01:48,599 INFO L87 Difference]: Start difference. First operand 109 states and 132 transitions. Second operand 11 states. [2020-10-28 20:01:49,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 20:01:49,407 INFO L93 Difference]: Finished difference Result 145 states and 178 transitions. [2020-10-28 20:01:49,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 20:01:49,407 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 65 [2020-10-28 20:01:49,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 20:01:49,409 INFO L225 Difference]: With dead ends: 145 [2020-10-28 20:01:49,409 INFO L226 Difference]: Without dead ends: 133 [2020-10-28 20:01:49,411 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2020-10-28 20:01:49,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-10-28 20:01:49,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 127. [2020-10-28 20:01:49,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-10-28 20:01:49,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 156 transitions. [2020-10-28 20:01:49,430 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 156 transitions. Word has length 65 [2020-10-28 20:01:49,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 20:01:49,430 INFO L481 AbstractCegarLoop]: Abstraction has 127 states and 156 transitions. [2020-10-28 20:01:49,430 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 20:01:49,430 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 156 transitions. [2020-10-28 20:01:49,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-28 20:01:49,431 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 20:01:49,431 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 20:01:49,432 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 20:01:49,432 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 20:01:49,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 20:01:49,432 INFO L82 PathProgramCache]: Analyzing trace with hash 745446138, now seen corresponding path program 1 times [2020-10-28 20:01:49,432 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 20:01:49,433 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1030179948] [2020-10-28 20:01:49,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 20:01:49,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:01:49,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:49,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:49,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:52,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:52,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:52,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:53,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:53,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:53,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:54,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:01:54,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-28 20:01:54,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 20:01:54,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 20:01:54,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:01:54,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:01:54,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 20:01:54,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-28 20:01:54,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-28 20:01:54,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:01:54,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 20:01:54,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:01:54,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:54,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:01:54,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 20:01:54,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:01:54,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 20:01:54,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:01:54,519 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:01:54,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:01:54,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:01:54,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:01:54,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:01:54,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 20:01:54,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:01:54,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:54,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:01:54,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:01:54,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:01:54,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 20:01:54,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:01:54,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:01:54,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:01:54,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:01:54,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:01:54,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:01:54,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 20:01:54,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:01:54,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:54,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:01:54,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 20:01:54,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:01:54,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 20:01:54,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:01:54,536 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:01:54,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:01:54,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:01:54,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:01:54,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:01:54,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 20:01:54,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:01:54,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:54,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:01:54,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 20:01:54,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:01:54,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 20:01:54,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:01:54,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:01:54,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:01:54,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:01:54,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:01:54,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:01:54,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 20:01:54,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:01:54,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:54,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:01:54,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:01:54,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:01:54,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 20:01:54,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:01:54,550 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:01:54,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:01:54,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:01:54,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:01:54,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:01:54,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 20:01:54,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:01:54,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:54,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:01:54,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:01:54,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:01:54,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 20:01:54,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:01:54,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:01:54,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:01:54,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:01:54,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:01:54,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:01:54,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 20:01:54,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:01:54,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:54,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:01:54,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:01:54,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:01:54,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 20:01:54,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:01:54,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:01:54,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:01:54,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:01:54,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:01:54,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:01:54,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-28 20:01:54,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:01:54,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:54,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:54,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:54,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:54,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:54,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:01:54,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-28 20:01:54,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 20:01:54,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 202 [2020-10-28 20:01:54,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:01:54,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:01:54,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 20:01:54,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:01:54,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 20:01:54,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:01:54,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-28 20:01:54,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:01:54,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:54,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:01:54,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:01:54,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:01:54,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 20:01:54,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:01:54,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:01:54,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 20:01:54,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:01:54,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 20:01:54,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:01:54,943 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-28 20:01:54,943 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1030179948] [2020-10-28 20:01:54,943 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 20:01:54,943 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-28 20:01:54,944 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804944289] [2020-10-28 20:01:54,944 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-28 20:01:54,944 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 20:01:54,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-28 20:01:54,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2020-10-28 20:01:54,945 INFO L87 Difference]: Start difference. First operand 127 states and 156 transitions. Second operand 15 states. [2020-10-28 20:01:56,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 20:01:56,184 INFO L93 Difference]: Finished difference Result 143 states and 175 transitions. [2020-10-28 20:01:56,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-28 20:01:56,185 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 64 [2020-10-28 20:01:56,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 20:01:56,186 INFO L225 Difference]: With dead ends: 143 [2020-10-28 20:01:56,186 INFO L226 Difference]: Without dead ends: 140 [2020-10-28 20:01:56,189 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=118, Invalid=532, Unknown=0, NotChecked=0, Total=650 [2020-10-28 20:01:56,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-10-28 20:01:56,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 127. [2020-10-28 20:01:56,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-10-28 20:01:56,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 156 transitions. [2020-10-28 20:01:56,218 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 156 transitions. Word has length 64 [2020-10-28 20:01:56,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 20:01:56,219 INFO L481 AbstractCegarLoop]: Abstraction has 127 states and 156 transitions. [2020-10-28 20:01:56,219 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-28 20:01:56,219 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 156 transitions. [2020-10-28 20:01:56,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-28 20:01:56,223 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 20:01:56,223 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 20:01:56,224 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 20:01:56,224 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 20:01:56,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 20:01:56,224 INFO L82 PathProgramCache]: Analyzing trace with hash 802704440, now seen corresponding path program 1 times [2020-10-28 20:01:56,224 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 20:01:56,225 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1670043880] [2020-10-28 20:01:56,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 20:01:56,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:01:56,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:56,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:56,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:57,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:59,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:01:59,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:01,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:01,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-28 20:02:01,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 20:02:01,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-28 20:02:01,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:01,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:01,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 20:02:01,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-28 20:02:01,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-28 20:02:01,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:01,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 20:02:01,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:01,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:01,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:01,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 20:02:01,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:01,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 20:02:01,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:01,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:01,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:02:01,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:01,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:02:01,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:01,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 20:02:01,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:01,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:01,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:01,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:02:01,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:01,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 20:02:01,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:01,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:01,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:02:01,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:01,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:02:01,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:01,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 20:02:01,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:01,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:01,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:01,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 20:02:01,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:01,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 20:02:01,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:01,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:01,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:02:01,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:01,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:02:01,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:01,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 20:02:01,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:01,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:01,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:01,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 20:02:01,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:01,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 20:02:01,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:01,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:01,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:02:01,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:01,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:02:01,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:01,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 20:02:01,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:01,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:01,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:01,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:02:01,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:01,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 20:02:01,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:01,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:01,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:02:01,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:01,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:02:01,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:01,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 20:02:01,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:01,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:01,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:01,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:02:01,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:01,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 20:02:01,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:01,394 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:01,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:02:01,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:01,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:02:01,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:01,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 20:02:01,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:01,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:01,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:01,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:02:01,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:01,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 20:02:01,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:01,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:01,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:02:01,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:01,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:02:01,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:01,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-28 20:02:01,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:01,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:01,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:01,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:01,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:01,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-28 20:02:01,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 20:02:01,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-28 20:02:01,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:01,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:01,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 20:02:01,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:01,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 20:02:01,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:01,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-28 20:02:01,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:01,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:01,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:01,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:02:01,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:01,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 20:02:01,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:01,650 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:01,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 20:02:01,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:01,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 20:02:01,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:01,658 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-10-28 20:02:01,658 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1670043880] [2020-10-28 20:02:01,658 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 20:02:01,658 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-28 20:02:01,659 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60760045] [2020-10-28 20:02:01,659 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 20:02:01,659 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 20:02:01,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 20:02:01,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-10-28 20:02:01,660 INFO L87 Difference]: Start difference. First operand 127 states and 156 transitions. Second operand 12 states. [2020-10-28 20:02:02,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 20:02:02,662 INFO L93 Difference]: Finished difference Result 160 states and 197 transitions. [2020-10-28 20:02:02,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 20:02:02,662 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 64 [2020-10-28 20:02:02,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 20:02:02,664 INFO L225 Difference]: With dead ends: 160 [2020-10-28 20:02:02,664 INFO L226 Difference]: Without dead ends: 137 [2020-10-28 20:02:02,665 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2020-10-28 20:02:02,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-10-28 20:02:02,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 113. [2020-10-28 20:02:02,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-28 20:02:02,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 136 transitions. [2020-10-28 20:02:02,689 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 136 transitions. Word has length 64 [2020-10-28 20:02:02,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 20:02:02,690 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 136 transitions. [2020-10-28 20:02:02,690 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 20:02:02,690 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 136 transitions. [2020-10-28 20:02:02,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-28 20:02:02,692 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 20:02:02,692 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 20:02:02,693 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 20:02:02,693 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 20:02:02,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 20:02:02,693 INFO L82 PathProgramCache]: Analyzing trace with hash 50106563, now seen corresponding path program 1 times [2020-10-28 20:02:02,694 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 20:02:02,694 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [189206219] [2020-10-28 20:02:02,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 20:02:02,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:02,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:02,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:03,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:03,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:04,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:04,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-28 20:02:04,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 20:02:04,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1648 [2020-10-28 20:02:04,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:04,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:04,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 20:02:04,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-28 20:02:04,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-28 20:02:04,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:04,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 20:02:04,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:04,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:04,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:04,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 20:02:04,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:04,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 20:02:04,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:04,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:04,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:02:04,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:04,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:02:04,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:04,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 20:02:04,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:04,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:04,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:04,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:02:04,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:04,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 20:02:04,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:04,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:04,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:02:04,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:04,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:02:04,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:04,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 20:02:04,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:04,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:04,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:04,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 20:02:04,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:04,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 20:02:04,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:04,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:04,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:02:04,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:04,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:02:04,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 20:02:04,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 20:02:04,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:04,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:04,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:04,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 20:02:04,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:04,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 20:02:04,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:04,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:04,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:02:04,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:04,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:02:04,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:04,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 20:02:04,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:04,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:04,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:04,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:02:04,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:04,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 20:02:04,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:04,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:04,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:02:04,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:04,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:02:04,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:04,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 20:02:04,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:04,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:04,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:04,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:02:04,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:04,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 20:02:04,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:04,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:04,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:02:04,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:04,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:02:04,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 20:02:04,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 20:02:04,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:04,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:04,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:04,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:02:04,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:04,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 20:02:04,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:04,536 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:04,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:02:04,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:04,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:02:04,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:04,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-28 20:02:04,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:04,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:04,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:04,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 20:02:04,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:04,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 20:02:04,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:04,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:04,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 20:02:04,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:04,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 20:02:04,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:04,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-28 20:02:04,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:04,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:04,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:04,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:02:04,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:04,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 20:02:04,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:04,665 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:04,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 20:02:04,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:04,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 20:02:04,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:04,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-28 20:02:04,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:04,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:04,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:04,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:02:04,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:04,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 20:02:04,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:04,672 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:04,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 20:02:04,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:04,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 20:02:04,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 20:02:04,682 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-10-28 20:02:04,684 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [189206219] [2020-10-28 20:02:04,684 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 20:02:04,685 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-28 20:02:04,685 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977483706] [2020-10-28 20:02:04,688 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 20:02:04,688 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 20:02:04,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 20:02:04,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-28 20:02:04,689 INFO L87 Difference]: Start difference. First operand 113 states and 136 transitions. Second operand 12 states. [2020-10-28 20:02:05,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 20:02:05,632 INFO L93 Difference]: Finished difference Result 141 states and 170 transitions. [2020-10-28 20:02:05,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 20:02:05,633 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 68 [2020-10-28 20:02:05,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 20:02:05,635 INFO L225 Difference]: With dead ends: 141 [2020-10-28 20:02:05,635 INFO L226 Difference]: Without dead ends: 129 [2020-10-28 20:02:05,636 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380 [2020-10-28 20:02:05,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-10-28 20:02:05,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 113. [2020-10-28 20:02:05,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-28 20:02:05,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 136 transitions. [2020-10-28 20:02:05,654 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 136 transitions. Word has length 68 [2020-10-28 20:02:05,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 20:02:05,654 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 136 transitions. [2020-10-28 20:02:05,654 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 20:02:05,655 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 136 transitions. [2020-10-28 20:02:05,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-28 20:02:05,656 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 20:02:05,656 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 20:02:05,656 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 20:02:05,656 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 20:02:05,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 20:02:05,656 INFO L82 PathProgramCache]: Analyzing trace with hash 2007349822, now seen corresponding path program 1 times [2020-10-28 20:02:05,657 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 20:02:05,657 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1229355949] [2020-10-28 20:02:05,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 20:02:05,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:05,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:05,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:05,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-28 20:02:05,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:05,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 252 [2020-10-28 20:02:05,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:05,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:05,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 20:02:05,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-28 20:02:05,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-28 20:02:05,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:06,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 20:02:06,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:06,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:06,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:06,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 20:02:06,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:06,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 20:02:06,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:06,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:06,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:02:06,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:06,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:02:06,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:06,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 20:02:06,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:06,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:06,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:06,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:02:06,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:06,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 20:02:06,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:06,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:06,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:02:06,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:06,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:02:06,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:06,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 20:02:06,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:06,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:06,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:06,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 20:02:06,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:06,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 20:02:06,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:06,036 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:06,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:02:06,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:06,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:02:06,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:06,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 20:02:06,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:06,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:06,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:06,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 20:02:06,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:06,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 20:02:06,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:06,048 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:06,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:02:06,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:06,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:02:06,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:06,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 20:02:06,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:06,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:06,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:06,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:02:06,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:06,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 20:02:06,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:06,055 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:06,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:02:06,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:06,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:02:06,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:06,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 20:02:06,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:06,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:06,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:06,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:02:06,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:06,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 20:02:06,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:06,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:06,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:02:06,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:06,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:02:06,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:06,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 20:02:06,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:06,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:06,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:06,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:02:06,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:06,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 20:02:06,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:06,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:06,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:02:06,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:06,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:02:06,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:06,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-28 20:02:06,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:06,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:06,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:06,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 20:02:06,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:06,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 20:02:06,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:06,088 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:06,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 20:02:06,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:06,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 20:02:06,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:06,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-28 20:02:06,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:06,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:06,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:06,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:02:06,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:06,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 20:02:06,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:06,205 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:06,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 20:02:06,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:06,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 20:02:06,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:06,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-28 20:02:06,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:06,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:06,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:06,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:02:06,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:06,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 20:02:06,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:06,210 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:06,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 20:02:06,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:06,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 20:02:06,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:06,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-28 20:02:06,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:06,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:06,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:06,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:02:06,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:06,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 20:02:06,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:06,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:06,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 20:02:06,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:06,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 20:02:06,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:06,223 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-28 20:02:06,223 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1229355949] [2020-10-28 20:02:06,224 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 20:02:06,224 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-28 20:02:06,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051682300] [2020-10-28 20:02:06,224 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 20:02:06,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 20:02:06,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 20:02:06,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-10-28 20:02:06,225 INFO L87 Difference]: Start difference. First operand 113 states and 136 transitions. Second operand 12 states. [2020-10-28 20:02:07,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 20:02:07,227 INFO L93 Difference]: Finished difference Result 135 states and 161 transitions. [2020-10-28 20:02:07,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-28 20:02:07,228 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 71 [2020-10-28 20:02:07,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 20:02:07,229 INFO L225 Difference]: With dead ends: 135 [2020-10-28 20:02:07,230 INFO L226 Difference]: Without dead ends: 132 [2020-10-28 20:02:07,230 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=84, Invalid=378, Unknown=0, NotChecked=0, Total=462 [2020-10-28 20:02:07,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-10-28 20:02:07,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 129. [2020-10-28 20:02:07,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-10-28 20:02:07,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 155 transitions. [2020-10-28 20:02:07,251 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 155 transitions. Word has length 71 [2020-10-28 20:02:07,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 20:02:07,251 INFO L481 AbstractCegarLoop]: Abstraction has 129 states and 155 transitions. [2020-10-28 20:02:07,251 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 20:02:07,252 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 155 transitions. [2020-10-28 20:02:07,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-28 20:02:07,253 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 20:02:07,253 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 20:02:07,253 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 20:02:07,253 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 20:02:07,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 20:02:07,254 INFO L82 PathProgramCache]: Analyzing trace with hash -1084951590, now seen corresponding path program 4 times [2020-10-28 20:02:07,254 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 20:02:07,254 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1412278176] [2020-10-28 20:02:07,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 20:02:07,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:07,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:07,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:07,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:09,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:09,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:10,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:10,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:11,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:12,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:12,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:12,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-28 20:02:12,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 20:02:12,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 20:02:12,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:12,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:12,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-28 20:02:12,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-28 20:02:12,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-28 20:02:12,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:12,727 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 16 [2020-10-28 20:02:12,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 20:02:12,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:12,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:12,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:12,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 20:02:12,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:12,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 20:02:12,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:12,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:12,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:02:12,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:12,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:02:12,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:12,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 20:02:12,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:12,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:12,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:12,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:02:12,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:12,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 20:02:12,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:12,831 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:12,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:02:12,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:12,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:02:12,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:12,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 20:02:12,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:12,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:12,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:12,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 20:02:12,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:12,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 20:02:12,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:12,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:12,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 20:02:12,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:12,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 20:02:12,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:12,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 20:02:12,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:12,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:12,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:12,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 20:02:12,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:12,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-28 20:02:12,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:12,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:12,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 20:02:12,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 20:02:12,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-28 20:02:12,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:13,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 20:02:13,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:13,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:13,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:13,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:02:13,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:13,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 20:02:13,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:13,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:13,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 20:02:13,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:13,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 20:02:13,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:13,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 20:02:13,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:13,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:13,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:13,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:02:13,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:13,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 20:02:13,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:13,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:13,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 20:02:13,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:13,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 20:02:13,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:13,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 20:02:13,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:13,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:13,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:13,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:02:13,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:13,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 20:02:13,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:13,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:13,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 20:02:13,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:13,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 20:02:13,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:13,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-28 20:02:13,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:13,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:13,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:13,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:13,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:13,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:13,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:14,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:14,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:14,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:15,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:15,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:16,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:16,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-28 20:02:16,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-28 20:02:16,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3309 [2020-10-28 20:02:16,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:16,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:16,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-28 20:02:16,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 20:02:16,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 20:02:16,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:16,779 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 23 [2020-10-28 20:02:17,860 WARN L193 SmtUtils]: Spent 760.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 53 [2020-10-28 20:02:18,666 WARN L193 SmtUtils]: Spent 730.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 54 [2020-10-28 20:02:19,537 WARN L193 SmtUtils]: Spent 786.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 52 [2020-10-28 20:02:20,242 WARN L193 SmtUtils]: Spent 569.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 58 [2020-10-28 20:02:21,206 WARN L193 SmtUtils]: Spent 824.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 62 [2020-10-28 20:02:21,605 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 33 [2020-10-28 20:02:21,924 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 25 [2020-10-28 20:02:22,282 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 25 [2020-10-28 20:02:22,547 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 19 [2020-10-28 20:02:22,579 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 3 proven. 25 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-10-28 20:02:22,580 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1412278176] [2020-10-28 20:02:22,580 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 20:02:22,580 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-28 20:02:22,580 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067304736] [2020-10-28 20:02:22,581 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-28 20:02:22,581 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 20:02:22,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-28 20:02:22,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=396, Unknown=0, NotChecked=0, Total=462 [2020-10-28 20:02:22,582 INFO L87 Difference]: Start difference. First operand 129 states and 155 transitions. Second operand 22 states. [2020-10-28 20:02:23,920 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 75 [2020-10-28 20:02:24,406 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 73 [2020-10-28 20:02:24,826 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 61 [2020-10-28 20:02:25,206 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 64 [2020-10-28 20:02:25,436 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 59 [2020-10-28 20:02:25,939 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 85 [2020-10-28 20:02:26,436 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 96 [2020-10-28 20:02:26,833 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 87 [2020-10-28 20:02:27,553 WARN L193 SmtUtils]: Spent 599.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 120 [2020-10-28 20:02:28,331 WARN L193 SmtUtils]: Spent 618.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 125 [2020-10-28 20:02:29,132 WARN L193 SmtUtils]: Spent 587.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 117 [2020-10-28 20:02:29,805 WARN L193 SmtUtils]: Spent 498.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 115 [2020-10-28 20:02:30,215 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 69 [2020-10-28 20:02:30,815 WARN L193 SmtUtils]: Spent 475.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 104 [2020-10-28 20:02:31,217 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 62 [2020-10-28 20:02:31,549 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 64 [2020-10-28 20:02:32,079 WARN L193 SmtUtils]: Spent 437.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 102 [2020-10-28 20:02:32,545 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 76 [2020-10-28 20:02:32,961 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 56 [2020-10-28 20:02:33,274 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 59 [2020-10-28 20:02:33,684 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 70 [2020-10-28 20:02:34,282 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 77 [2020-10-28 20:02:34,884 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 75 [2020-10-28 20:02:35,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 20:02:35,668 INFO L93 Difference]: Finished difference Result 207 states and 246 transitions. [2020-10-28 20:02:35,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-28 20:02:35,668 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 68 [2020-10-28 20:02:35,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 20:02:35,670 INFO L225 Difference]: With dead ends: 207 [2020-10-28 20:02:35,670 INFO L226 Difference]: Without dead ends: 137 [2020-10-28 20:02:35,673 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 470 ImplicationChecksByTransitivity, 16.5s TimeCoverageRelationStatistics Valid=557, Invalid=2095, Unknown=0, NotChecked=0, Total=2652 [2020-10-28 20:02:35,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-10-28 20:02:35,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 126. [2020-10-28 20:02:35,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-10-28 20:02:35,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 150 transitions. [2020-10-28 20:02:35,693 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 150 transitions. Word has length 68 [2020-10-28 20:02:35,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 20:02:35,693 INFO L481 AbstractCegarLoop]: Abstraction has 126 states and 150 transitions. [2020-10-28 20:02:35,693 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-28 20:02:35,693 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 150 transitions. [2020-10-28 20:02:35,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-28 20:02:35,694 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 20:02:35,694 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 20:02:35,695 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 20:02:35,695 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 20:02:35,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 20:02:35,695 INFO L82 PathProgramCache]: Analyzing trace with hash -1140947321, now seen corresponding path program 1 times [2020-10-28 20:02:35,695 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 20:02:35,696 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [14046894] [2020-10-28 20:02:35,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 20:02:35,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:35,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:36,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:36,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-28 20:02:36,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:36,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 326 [2020-10-28 20:02:36,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:36,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:36,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 20:02:36,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-28 20:02:36,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-28 20:02:36,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:36,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 20:02:36,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:36,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:36,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:36,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 20:02:36,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:36,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 20:02:36,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:36,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:36,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:02:36,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:36,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:02:36,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:36,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 20:02:36,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:36,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:36,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:36,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:02:36,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:36,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 20:02:36,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:36,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:36,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:02:36,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:36,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:02:36,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:36,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 20:02:36,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:36,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:36,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:36,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 20:02:36,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:36,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 20:02:36,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:36,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:36,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:02:36,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:36,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:02:36,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:36,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 20:02:36,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:36,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:36,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:36,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 20:02:36,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:36,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 20:02:36,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:36,171 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:36,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:02:36,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:36,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:02:36,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:36,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 20:02:36,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:36,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:36,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:36,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:02:36,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:36,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 20:02:36,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:36,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:36,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:02:36,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:36,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:02:36,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:36,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 20:02:36,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:36,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:36,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:36,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:02:36,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:36,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 20:02:36,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:36,183 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:36,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:02:36,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:36,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:02:36,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:36,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 20:02:36,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:36,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:36,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:36,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:02:36,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:36,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 20:02:36,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:36,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:36,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:02:36,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:36,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:02:36,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:36,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-28 20:02:36,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:36,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:36,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:36,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 20:02:36,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:36,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-28 20:02:36,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:36,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:36,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 20:02:36,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:36,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 20:02:36,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 20:02:36,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-28 20:02:36,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:36,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:36,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:36,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:02:36,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:36,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 20:02:36,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:36,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:36,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 20:02:36,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:36,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 20:02:36,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 20:02:36,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-28 20:02:36,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:36,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:36,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:36,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:02:36,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:36,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 20:02:36,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:36,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:36,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 20:02:36,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:36,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 20:02:36,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 20:02:36,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-28 20:02:36,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:36,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:36,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:36,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:02:36,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:36,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 20:02:36,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:36,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:36,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 20:02:36,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:36,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 20:02:36,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:36,537 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-28 20:02:36,538 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [14046894] [2020-10-28 20:02:36,538 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 20:02:36,538 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-28 20:02:36,538 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318235180] [2020-10-28 20:02:36,539 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-28 20:02:36,539 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 20:02:36,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-28 20:02:36,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-10-28 20:02:36,540 INFO L87 Difference]: Start difference. First operand 126 states and 150 transitions. Second operand 13 states. [2020-10-28 20:02:37,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 20:02:37,930 INFO L93 Difference]: Finished difference Result 165 states and 199 transitions. [2020-10-28 20:02:37,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-28 20:02:37,931 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 74 [2020-10-28 20:02:37,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 20:02:37,933 INFO L225 Difference]: With dead ends: 165 [2020-10-28 20:02:37,933 INFO L226 Difference]: Without dead ends: 162 [2020-10-28 20:02:37,934 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=117, Invalid=533, Unknown=0, NotChecked=0, Total=650 [2020-10-28 20:02:37,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-10-28 20:02:37,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 141. [2020-10-28 20:02:37,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-28 20:02:37,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 172 transitions. [2020-10-28 20:02:37,956 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 172 transitions. Word has length 74 [2020-10-28 20:02:37,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 20:02:37,956 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 172 transitions. [2020-10-28 20:02:37,956 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-28 20:02:37,956 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 172 transitions. [2020-10-28 20:02:37,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-28 20:02:37,958 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 20:02:37,958 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 20:02:37,958 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 20:02:37,958 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 20:02:37,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 20:02:37,959 INFO L82 PathProgramCache]: Analyzing trace with hash 1597650589, now seen corresponding path program 5 times [2020-10-28 20:02:37,959 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 20:02:37,959 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [271283345] [2020-10-28 20:02:37,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 20:02:37,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:37,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:38,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:38,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:38,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:38,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:42,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:42,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-28 20:02:42,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 20:02:42,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-28 20:02:42,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:42,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:42,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 20:02:42,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-28 20:02:42,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 20:02:42,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:43,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 20:02:43,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:43,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:43,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:43,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 20:02:43,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:43,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 20:02:43,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:43,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:43,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:02:43,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:43,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:02:43,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:43,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 20:02:43,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:43,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:43,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:43,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:02:43,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:43,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 20:02:43,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:43,023 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:43,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:02:43,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:43,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:02:43,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:43,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 20:02:43,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:43,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:43,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:43,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 20:02:43,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:43,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 20:02:43,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:43,037 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:43,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:02:43,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:43,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:02:43,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:43,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 20:02:43,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:43,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:43,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:43,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 20:02:43,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:43,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 20:02:43,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:43,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:43,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:02:43,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:43,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:02:43,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:43,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 20:02:43,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:43,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:43,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:43,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:02:43,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:43,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 20:02:43,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:43,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:43,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:02:43,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:43,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:02:43,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:43,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 20:02:43,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:43,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:43,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:43,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:02:43,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:43,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 20:02:43,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:43,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:43,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:02:43,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:43,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:02:43,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:43,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 20:02:43,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:43,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:43,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:43,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:02:43,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:43,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 20:02:43,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:43,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:43,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:02:43,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:43,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:02:43,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:43,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-28 20:02:43,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:43,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:43,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:43,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:43,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:43,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:43,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:43,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:43,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:43,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:43,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:43,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:44,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:44,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-28 20:02:44,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-28 20:02:44,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1239 [2020-10-28 20:02:44,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:44,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:44,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 20:02:44,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 20:02:44,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 20:02:44,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:44,396 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 24 proven. 15 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-10-28 20:02:44,397 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [271283345] [2020-10-28 20:02:44,397 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 20:02:44,397 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-28 20:02:44,397 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405217881] [2020-10-28 20:02:44,398 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 20:02:44,398 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 20:02:44,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 20:02:44,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-28 20:02:44,399 INFO L87 Difference]: Start difference. First operand 141 states and 172 transitions. Second operand 11 states. [2020-10-28 20:02:45,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 20:02:45,557 INFO L93 Difference]: Finished difference Result 248 states and 303 transitions. [2020-10-28 20:02:45,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-28 20:02:45,558 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 71 [2020-10-28 20:02:45,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 20:02:45,560 INFO L225 Difference]: With dead ends: 248 [2020-10-28 20:02:45,560 INFO L226 Difference]: Without dead ends: 154 [2020-10-28 20:02:45,561 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=165, Invalid=387, Unknown=0, NotChecked=0, Total=552 [2020-10-28 20:02:45,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-10-28 20:02:45,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 142. [2020-10-28 20:02:45,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-28 20:02:45,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 172 transitions. [2020-10-28 20:02:45,589 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 172 transitions. Word has length 71 [2020-10-28 20:02:45,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 20:02:45,590 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 172 transitions. [2020-10-28 20:02:45,590 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 20:02:45,590 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 172 transitions. [2020-10-28 20:02:45,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-28 20:02:45,593 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 20:02:45,594 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 20:02:45,594 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 20:02:45,594 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 20:02:45,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 20:02:45,596 INFO L82 PathProgramCache]: Analyzing trace with hash 347670850, now seen corresponding path program 1 times [2020-10-28 20:02:45,596 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 20:02:45,596 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [770319200] [2020-10-28 20:02:45,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 20:02:45,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:45,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:45,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:45,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-28 20:02:45,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:45,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 299 [2020-10-28 20:02:45,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:45,918 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:45,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 20:02:45,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-28 20:02:45,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-28 20:02:45,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:46,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 20:02:46,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:46,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:46,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:46,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 20:02:46,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:46,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 20:02:46,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:46,117 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:46,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:02:46,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:46,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:02:46,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:46,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 20:02:46,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:46,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:46,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:46,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:02:46,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:46,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 20:02:46,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:46,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:46,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:02:46,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:46,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:02:46,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:46,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 20:02:46,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:46,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:46,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:46,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 20:02:46,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:46,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 20:02:46,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:46,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:46,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 20:02:46,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:46,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 20:02:46,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:46,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 20:02:46,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:46,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:46,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:46,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 20:02:46,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:46,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 20:02:46,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:46,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:46,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 20:02:46,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:46,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-28 20:02:46,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:46,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 20:02:46,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:46,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:46,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:46,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:02:46,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:46,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 20:02:46,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:46,171 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:46,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:02:46,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:46,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:02:46,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:46,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 20:02:46,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:46,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:46,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:46,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:02:46,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:46,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 20:02:46,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:46,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:46,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:02:46,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:46,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:02:46,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:46,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 20:02:46,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:46,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:46,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:46,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:02:46,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:46,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 20:02:46,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:46,179 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:46,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:02:46,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:46,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:02:46,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:46,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-28 20:02:46,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:46,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:46,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:46,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 20:02:46,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:46,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 20:02:46,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:46,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:46,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 20:02:46,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:46,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 20:02:46,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:46,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-28 20:02:46,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:46,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:46,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:46,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:02:46,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:46,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 20:02:46,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:46,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:46,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 20:02:46,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:46,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 20:02:46,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:46,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-28 20:02:46,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:46,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:46,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:46,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:02:46,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:46,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 20:02:46,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:46,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:46,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 20:02:46,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:46,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 20:02:46,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:46,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-28 20:02:46,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:46,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:46,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:46,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:02:46,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:46,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 20:02:46,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:46,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:46,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 20:02:46,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:46,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 20:02:46,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:46,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-28 20:02:46,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:46,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:46,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:46,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:02:46,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:46,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 20:02:46,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:46,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:46,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 20:02:46,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:46,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 20:02:46,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:46,512 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2020-10-28 20:02:46,512 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [770319200] [2020-10-28 20:02:46,513 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 20:02:46,513 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-28 20:02:46,513 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119296623] [2020-10-28 20:02:46,513 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-28 20:02:46,513 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 20:02:46,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-28 20:02:46,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-10-28 20:02:46,514 INFO L87 Difference]: Start difference. First operand 142 states and 172 transitions. Second operand 14 states. [2020-10-28 20:02:48,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 20:02:48,224 INFO L93 Difference]: Finished difference Result 166 states and 201 transitions. [2020-10-28 20:02:48,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-28 20:02:48,225 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 77 [2020-10-28 20:02:48,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 20:02:48,227 INFO L225 Difference]: With dead ends: 166 [2020-10-28 20:02:48,227 INFO L226 Difference]: Without dead ends: 145 [2020-10-28 20:02:48,228 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=101, Invalid=549, Unknown=0, NotChecked=0, Total=650 [2020-10-28 20:02:48,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-10-28 20:02:48,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2020-10-28 20:02:48,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-10-28 20:02:48,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 174 transitions. [2020-10-28 20:02:48,252 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 174 transitions. Word has length 77 [2020-10-28 20:02:48,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 20:02:48,252 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 174 transitions. [2020-10-28 20:02:48,252 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-28 20:02:48,252 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 174 transitions. [2020-10-28 20:02:48,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-28 20:02:48,254 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 20:02:48,254 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 20:02:48,254 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-28 20:02:48,254 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 20:02:48,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 20:02:48,255 INFO L82 PathProgramCache]: Analyzing trace with hash 1434675614, now seen corresponding path program 2 times [2020-10-28 20:02:48,255 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 20:02:48,255 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1074056823] [2020-10-28 20:02:48,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 20:02:48,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:48,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:48,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:48,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-28 20:02:48,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:48,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 251 [2020-10-28 20:02:48,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:48,522 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:48,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 20:02:48,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-28 20:02:48,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-28 20:02:48,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:48,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 20:02:48,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:48,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:48,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:48,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 20:02:48,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:48,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 20:02:48,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:48,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:48,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:02:48,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:48,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:02:48,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:48,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 20:02:48,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:48,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:48,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:48,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:02:48,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:48,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 20:02:48,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:48,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:48,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:02:48,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:48,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:02:48,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:48,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 20:02:48,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:48,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:48,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:48,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 20:02:48,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:48,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 20:02:48,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:48,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:48,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:02:48,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:48,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:02:48,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:48,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 20:02:48,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:48,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:48,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:48,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 20:02:48,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:48,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 20:02:48,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:48,639 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:48,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:02:48,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:48,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:02:48,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:48,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 20:02:48,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:48,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:48,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:48,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:02:48,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:48,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 20:02:48,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:48,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:48,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:02:48,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:48,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:02:48,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:48,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 20:02:48,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:48,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:48,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:48,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:02:48,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:48,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 20:02:48,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:48,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:48,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:02:48,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:48,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:02:48,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:48,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 20:02:48,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:48,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:48,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:48,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:02:48,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:48,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 20:02:48,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:48,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:48,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:02:48,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:48,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:02:48,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:48,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-28 20:02:48,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:48,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:48,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:48,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-28 20:02:48,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:48,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 20:02:48,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:48,684 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:48,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 20:02:48,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:48,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 20:02:48,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:48,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-28 20:02:48,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:48,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:48,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:48,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:02:48,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:48,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 20:02:48,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:48,930 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:48,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 20:02:48,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:48,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 20:02:48,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:48,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-28 20:02:48,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:48,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:48,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:48,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:02:48,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:48,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 20:02:48,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:48,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:48,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 20:02:48,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:48,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 20:02:48,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:48,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-28 20:02:48,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:48,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:48,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:48,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:02:48,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:48,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 20:02:48,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:48,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:48,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 20:02:48,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:48,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 20:02:48,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:48,950 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-28 20:02:48,951 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1074056823] [2020-10-28 20:02:48,951 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 20:02:48,951 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-28 20:02:48,951 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042168115] [2020-10-28 20:02:48,951 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-28 20:02:48,952 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 20:02:48,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-28 20:02:48,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2020-10-28 20:02:48,952 INFO L87 Difference]: Start difference. First operand 145 states and 174 transitions. Second operand 14 states. [2020-10-28 20:02:50,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 20:02:50,243 INFO L93 Difference]: Finished difference Result 157 states and 187 transitions. [2020-10-28 20:02:50,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-28 20:02:50,244 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 77 [2020-10-28 20:02:50,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 20:02:50,245 INFO L225 Difference]: With dead ends: 157 [2020-10-28 20:02:50,245 INFO L226 Difference]: Without dead ends: 142 [2020-10-28 20:02:50,246 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=108, Invalid=492, Unknown=0, NotChecked=0, Total=600 [2020-10-28 20:02:50,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-10-28 20:02:50,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 123. [2020-10-28 20:02:50,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-10-28 20:02:50,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 144 transitions. [2020-10-28 20:02:50,274 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 144 transitions. Word has length 77 [2020-10-28 20:02:50,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 20:02:50,274 INFO L481 AbstractCegarLoop]: Abstraction has 123 states and 144 transitions. [2020-10-28 20:02:50,274 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-28 20:02:50,274 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 144 transitions. [2020-10-28 20:02:50,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-28 20:02:50,275 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 20:02:50,275 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 20:02:50,276 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-28 20:02:50,276 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 20:02:50,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 20:02:50,276 INFO L82 PathProgramCache]: Analyzing trace with hash -1550646554, now seen corresponding path program 6 times [2020-10-28 20:02:50,276 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 20:02:50,276 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1992877918] [2020-10-28 20:02:50,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 20:02:50,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:50,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:50,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:50,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:50,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:51,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:51,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:52,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:54,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:55,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:55,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:55,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-28 20:02:55,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 20:02:55,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-28 20:02:55,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:55,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:55,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 20:02:55,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-28 20:02:55,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-28 20:02:55,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:55,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 20:02:55,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:55,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:55,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:55,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 20:02:55,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:55,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 20:02:55,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:55,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:55,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:02:55,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:55,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:02:55,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:55,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 20:02:55,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:55,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:55,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:55,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:02:55,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:55,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 20:02:55,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:55,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:55,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:02:55,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:55,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:02:55,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:55,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 20:02:55,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:55,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:55,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:55,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 20:02:55,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:55,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 20:02:55,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:55,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:55,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:02:55,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:55,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:02:55,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:55,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 20:02:55,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:55,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:55,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:55,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 20:02:55,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:55,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 20:02:55,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:55,372 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:55,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:02:55,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:55,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:02:55,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:55,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 20:02:55,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:55,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:55,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:55,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:02:55,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:55,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 20:02:55,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:55,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:55,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:02:55,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:55,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:02:55,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:55,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 20:02:55,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:55,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:55,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:55,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:02:55,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:55,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 20:02:55,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:55,383 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:55,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:02:55,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:55,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:02:55,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:55,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 20:02:55,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:55,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:55,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:55,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:02:55,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:55,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 20:02:55,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:55,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:55,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:02:55,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:55,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:02:55,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 20:02:55,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-28 20:02:55,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:55,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:55,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:55,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:55,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:55,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:55,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:55,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:55,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:55,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:55,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:55,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:55,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:55,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:55,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:55,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:55,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:57,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:57,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-28 20:02:57,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-28 20:02:57,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1699 [2020-10-28 20:02:57,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:57,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:57,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 20:02:57,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 20:02:57,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-28 20:02:57,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:57,195 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 8 proven. 44 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-10-28 20:02:57,196 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1992877918] [2020-10-28 20:02:57,196 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 20:02:57,196 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-28 20:02:57,196 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124218162] [2020-10-28 20:02:57,197 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 20:02:57,197 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 20:02:57,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 20:02:57,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-10-28 20:02:57,197 INFO L87 Difference]: Start difference. First operand 123 states and 144 transitions. Second operand 11 states. [2020-10-28 20:02:58,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 20:02:58,183 INFO L93 Difference]: Finished difference Result 138 states and 158 transitions. [2020-10-28 20:02:58,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-28 20:02:58,184 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 74 [2020-10-28 20:02:58,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 20:02:58,186 INFO L225 Difference]: With dead ends: 138 [2020-10-28 20:02:58,186 INFO L226 Difference]: Without dead ends: 112 [2020-10-28 20:02:58,187 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=169, Invalid=337, Unknown=0, NotChecked=0, Total=506 [2020-10-28 20:02:58,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-10-28 20:02:58,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 102. [2020-10-28 20:02:58,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-10-28 20:02:58,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 115 transitions. [2020-10-28 20:02:58,206 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 115 transitions. Word has length 74 [2020-10-28 20:02:58,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 20:02:58,206 INFO L481 AbstractCegarLoop]: Abstraction has 102 states and 115 transitions. [2020-10-28 20:02:58,206 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 20:02:58,206 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 115 transitions. [2020-10-28 20:02:58,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-28 20:02:58,207 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 20:02:58,207 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 20:02:58,208 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-28 20:02:58,208 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 20:02:58,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 20:02:58,208 INFO L82 PathProgramCache]: Analyzing trace with hash 645877401, now seen corresponding path program 1 times [2020-10-28 20:02:58,209 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 20:02:58,209 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1962413598] [2020-10-28 20:02:58,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 20:02:58,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:58,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:58,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:58,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:59,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:03:00,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:03:00,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:03:03,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:03:03,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-28 20:03:03,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 20:03:03,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 20:03:03,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:03:03,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:03:03,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 20:03:03,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-28 20:03:03,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-28 20:03:03,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:03:03,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 20:03:03,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:03:03,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:03:03,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:03:03,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 20:03:03,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:03:03,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 20:03:03,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:03:03,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:03:03,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:03:03,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:03:03,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:03:03,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:03:03,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 20:03:03,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:03:03,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:03:03,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:03:03,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:03:03,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:03:03,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 20:03:03,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:03:03,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:03:03,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:03:03,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:03:03,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:03:03,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:03:03,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 20:03:03,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:03:03,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:03:03,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:03:03,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 20:03:03,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:03:03,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 20:03:03,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:03:03,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:03:03,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:03:03,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:03:03,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:03:03,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:03:03,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 20:03:03,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:03:03,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:03:03,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:03:03,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 20:03:03,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:03:03,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 20:03:03,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:03:03,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:03:03,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:03:03,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:03:03,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:03:03,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:03:03,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 20:03:03,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:03:03,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:03:03,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:03:03,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:03:03,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:03:03,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 20:03:03,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:03:03,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:03:03,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:03:03,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:03:03,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:03:03,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:03:03,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 20:03:03,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:03:03,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:03:03,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:03:03,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:03:03,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:03:03,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 20:03:03,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:03:03,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:03:03,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:03:03,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:03:03,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:03:03,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:03:03,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 20:03:03,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:03:03,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:03:03,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:03:03,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:03:03,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:03:03,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 20:03:03,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:03:03,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:03:03,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:03:03,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:03:03,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:03:03,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:03:03,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-28 20:03:03,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:03:03,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:03:03,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:03:03,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 20:03:03,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:03:03,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-28 20:03:03,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:03:03,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:03:03,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 20:03:03,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:03:03,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-28 20:03:03,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:03:03,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-28 20:03:03,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:03:03,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:03:03,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:03:03,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:03:03,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:03:03,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 20:03:03,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:03:03,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:03:03,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 20:03:03,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:03:03,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 20:03:03,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 20:03:03,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-28 20:03:03,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:03:03,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:03:03,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:03:03,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:03:03,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:03:03,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 20:03:03,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:03:03,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:03:03,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 20:03:03,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:03:03,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 20:03:03,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:03:03,490 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 7 proven. 17 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-28 20:03:03,490 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1962413598] [2020-10-28 20:03:03,491 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 20:03:03,491 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-28 20:03:03,491 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280649123] [2020-10-28 20:03:03,491 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 20:03:03,491 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 20:03:03,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 20:03:03,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-28 20:03:03,492 INFO L87 Difference]: Start difference. First operand 102 states and 115 transitions. Second operand 11 states. [2020-10-28 20:03:04,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 20:03:04,368 INFO L93 Difference]: Finished difference Result 126 states and 140 transitions. [2020-10-28 20:03:04,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 20:03:04,369 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 80 [2020-10-28 20:03:04,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 20:03:04,370 INFO L225 Difference]: With dead ends: 126 [2020-10-28 20:03:04,370 INFO L226 Difference]: Without dead ends: 108 [2020-10-28 20:03:04,371 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=82, Invalid=260, Unknown=0, NotChecked=0, Total=342 [2020-10-28 20:03:04,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-28 20:03:04,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 90. [2020-10-28 20:03:04,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-10-28 20:03:04,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 99 transitions. [2020-10-28 20:03:04,387 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 99 transitions. Word has length 80 [2020-10-28 20:03:04,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 20:03:04,387 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 99 transitions. [2020-10-28 20:03:04,387 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 20:03:04,387 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 99 transitions. [2020-10-28 20:03:04,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-28 20:03:04,388 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 20:03:04,388 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 20:03:04,389 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-28 20:03:04,389 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 20:03:04,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 20:03:04,389 INFO L82 PathProgramCache]: Analyzing trace with hash 558990229, now seen corresponding path program 1 times [2020-10-28 20:03:04,389 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 20:03:04,389 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [426609024] [2020-10-28 20:03:04,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 20:03:04,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:03:04,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:03:04,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:03:04,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:03:08,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:03:08,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-28 20:03:08,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 20:03:08,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4433 [2020-10-28 20:03:08,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:03:08,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:03:08,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 20:03:08,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-28 20:03:08,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-28 20:03:08,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:03:08,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 20:03:08,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:03:08,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:03:08,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:03:08,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 20:03:08,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:03:08,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 20:03:08,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:03:08,972 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:03:08,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:03:08,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:03:08,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:03:08,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:03:08,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 20:03:08,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:03:08,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:03:08,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:03:08,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:03:08,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:03:08,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 20:03:08,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:03:08,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:03:08,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:03:08,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:03:08,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:03:08,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:03:08,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 20:03:08,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:03:08,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:03:08,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:03:08,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 20:03:08,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:03:08,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 20:03:08,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:03:08,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:03:08,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 20:03:08,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:03:08,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 20:03:08,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:03:08,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 20:03:09,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:03:09,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:03:09,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:03:09,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 20:03:09,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:03:09,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 20:03:09,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:03:09,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:03:09,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 20:03:09,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:03:09,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-28 20:03:09,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:03:09,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 20:03:09,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:03:09,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:03:09,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:03:09,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:03:09,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:03:09,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 20:03:09,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:03:09,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:03:09,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:03:09,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:03:09,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:03:09,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:03:09,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 20:03:09,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:03:09,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:03:09,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:03:09,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:03:09,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:03:09,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 20:03:09,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:03:09,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:03:09,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:03:09,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:03:09,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:03:09,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:03:09,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 20:03:09,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:03:09,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:03:09,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:03:09,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:03:09,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:03:09,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 20:03:09,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:03:09,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:03:09,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:03:09,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:03:09,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:03:09,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:03:09,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-28 20:03:09,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:03:09,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:03:09,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:03:09,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 20:03:09,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:03:09,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 20:03:09,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:03:09,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:03:09,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 20:03:09,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:03:09,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 20:03:09,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:03:09,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-28 20:03:09,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:03:09,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:03:09,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:03:09,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:03:09,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:03:09,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 20:03:09,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:03:09,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:03:09,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 20:03:09,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:03:09,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 20:03:09,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:03:09,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-28 20:03:09,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:03:09,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:03:09,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:03:09,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:03:09,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:03:09,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 20:03:09,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:03:09,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:03:09,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 20:03:09,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:03:09,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 20:03:09,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:03:09,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-28 20:03:09,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:03:09,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:03:09,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:03:09,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:03:09,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:03:09,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 20:03:09,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:03:09,314 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:03:09,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 20:03:09,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:03:09,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 20:03:09,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:03:09,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-28 20:03:09,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:03:09,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:03:09,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:03:09,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:03:09,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:03:09,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 20:03:09,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:03:09,318 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:03:09,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 20:03:09,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:03:09,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 20:03:09,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:03:09,335 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-10-28 20:03:09,335 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [426609024] [2020-10-28 20:03:09,335 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 20:03:09,335 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-28 20:03:09,335 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746190675] [2020-10-28 20:03:09,336 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-28 20:03:09,336 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 20:03:09,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-28 20:03:09,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-10-28 20:03:09,336 INFO L87 Difference]: Start difference. First operand 90 states and 99 transitions. Second operand 14 states. [2020-10-28 20:03:10,048 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 76 [2020-10-28 20:03:10,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 20:03:10,647 INFO L93 Difference]: Finished difference Result 90 states and 99 transitions. [2020-10-28 20:03:10,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-28 20:03:10,647 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 86 [2020-10-28 20:03:10,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 20:03:10,648 INFO L225 Difference]: With dead ends: 90 [2020-10-28 20:03:10,648 INFO L226 Difference]: Without dead ends: 0 [2020-10-28 20:03:10,649 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=101, Invalid=549, Unknown=0, NotChecked=0, Total=650 [2020-10-28 20:03:10,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-28 20:03:10,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-28 20:03:10,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-28 20:03:10,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-28 20:03:10,650 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 86 [2020-10-28 20:03:10,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 20:03:10,650 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-28 20:03:10,650 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-28 20:03:10,650 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-28 20:03:10,650 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-28 20:03:10,650 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-28 20:03:10,652 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-28 20:03:11,236 WARN L193 SmtUtils]: Spent 573.00 ms on a formula simplification. DAG size of input: 279 DAG size of output: 262 [2020-10-28 20:03:11,568 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 196 [2020-10-28 20:03:15,242 WARN L193 SmtUtils]: Spent 3.41 s on a formula simplification. DAG size of input: 246 DAG size of output: 154 [2020-10-28 20:03:15,411 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 54 [2020-10-28 20:03:15,649 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 53 [2020-10-28 20:03:15,780 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 32 [2020-10-28 20:03:17,928 WARN L193 SmtUtils]: Spent 2.07 s on a formula simplification. DAG size of input: 184 DAG size of output: 134 [2020-10-28 20:03:18,098 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 56 [2020-10-28 20:03:18,360 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 59 [2020-10-28 20:03:18,516 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 55 [2020-10-28 20:03:18,810 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 50 [2020-10-28 20:03:18,926 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 30 [2020-10-28 20:03:18,935 INFO L274 CegarLoopResult]: For program point reach_errorEXIT(line 8) no Hoare annotation was computed. [2020-10-28 20:03:18,936 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 8) the Hoare annotation is: true [2020-10-28 20:03:18,936 INFO L274 CegarLoopResult]: For program point reach_errorFINAL(line 8) no Hoare annotation was computed. [2020-10-28 20:03:18,936 INFO L274 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-10-28 20:03:18,936 INFO L274 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-28 20:03:18,936 INFO L270 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |old(#NULL.base)| |#NULL.base|) (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#t~string6.offset)| |#t~string6.offset|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |#t~string7.offset| |old(#t~string7.offset)|) (= |old(#t~string7.base)| |#t~string7.base|) (= |old(#valid)| |#valid|)) [2020-10-28 20:03:18,936 INFO L274 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-28 20:03:18,937 INFO L270 CegarLoopResult]: At program point finddupENTRY(lines 33 46) the Hoare annotation is: (= |#memory_int| |old(#memory_int)|) [2020-10-28 20:03:18,937 INFO L274 CegarLoopResult]: For program point finddupEXIT(lines 33 46) no Hoare annotation was computed. [2020-10-28 20:03:18,937 INFO L274 CegarLoopResult]: For program point L38(lines 38 42) no Hoare annotation was computed. [2020-10-28 20:03:18,937 INFO L274 CegarLoopResult]: For program point L36-2(lines 36 44) no Hoare annotation was computed. [2020-10-28 20:03:18,938 INFO L270 CegarLoopResult]: At program point L36-3(lines 36 44) the Hoare annotation is: (let ((.cse35 (select |#memory_int| finddup_~a.base)) (.cse30 ((as const (Array Int Int)) 0))) (let ((.cse26 (@diff .cse35 .cse30))) (let ((.cse29 (store .cse35 .cse26 0)) (.cse33 (select |old(#memory_int)| |finddup_#in~a.base|))) (let ((.cse34 (@diff .cse33 .cse30)) (.cse28 (* finddup_~n 4)) (.cse36 (@diff .cse29 .cse30))) (let ((.cse21 (select .cse35 .cse36)) (.cse23 (select .cse35 .cse26)) (.cse24 (select .cse35 (+ .cse28 finddup_~a.offset (- 8)))) (.cse25 (not (= .cse30 (store .cse29 .cse36 0)))) (.cse22 (select .cse35 (+ .cse28 finddup_~a.offset (- 4)))) (.cse31 (store .cse33 .cse34 0)) (.cse11 (+ finddup_~i~1 1)) (.cse0 (= |#memory_int| |old(#memory_int)|)) (.cse20 (not (= (select .cse33 (+ .cse28 |finddup_#in~a.offset| (- 4))) (select .cse33 |finddup_#in~a.offset|)))) (.cse10 (= |finddup_#in~n| finddup_~n))) (let ((.cse2 (or (and (<= .cse11 finddup_~n) .cse0) (and (<= (* 4 finddup_~i~1) (* 4 finddup_~n)) .cse0 .cse20 (<= finddup_~i~1 2) .cse10))) (.cse12 (<= finddup_~n finddup_~i~1)) (.cse3 (let ((.cse32 (@diff .cse31 .cse30))) (or (not (= .cse30 (store .cse31 .cse32 0))) (not (= (select .cse33 .cse34) (select .cse33 .cse32)))))) (.cse7 (not (= .cse31 .cse30))) (.cse4 (<= finddup_~j~1 .cse11)) (.cse14 (or (let ((.cse27 (+ .cse28 finddup_~a.offset))) (and (not (= (+ .cse26 8) .cse27)) (not (= (+ .cse26 4) .cse27)))) (not (= .cse29 .cse30)))) (.cse6 (= |finddup_#in~_j.base| finddup_~_j.base)) (.cse13 (<= finddup_~j~1 finddup_~n)) (.cse8 (= finddup_~_j.offset |finddup_#in~_j.offset|)) (.cse9 (= |finddup_#in~_i.offset| finddup_~_i.offset)) (.cse15 (or (not (= .cse21 .cse24)) (not (= .cse23 .cse24)) .cse25 (not (= .cse22 0)))) (.cse1 (= |finddup_#in~a.base| finddup_~a.base)) (.cse5 (= |finddup_#in~_i.base| finddup_~_i.base)) (.cse17 (or (not (= .cse21 .cse22)) (not (= .cse23 .cse22)) (not (= 0 .cse24)) .cse25)) (.cse18 (= finddup_~a.offset |finddup_#in~a.offset|)) (.cse19 (<= finddup_~n finddup_~j~1))) (or (and .cse0 (<= |finddup_#in~n| 1)) (and .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 (not (= (* finddup_~i~1 4) (* finddup_~j~1 4))) .cse9 .cse10 (<= finddup_~n .cse11)) (and .cse12 .cse2 .cse4) (and .cse1 .cse12 .cse0 .cse3 .cse5 .cse6 .cse7 .cse8 .cse13 .cse9 .cse10) (let ((.cse16 (+ finddup_~i~1 2))) (and .cse14 .cse0 .cse6 .cse8 .cse13 .cse9 .cse15 (<= .cse16 finddup_~j~1) .cse10 .cse1 (<= finddup_~j~1 .cse16) .cse5 .cse17 .cse18 .cse19)) (and .cse1 .cse0 .cse4 .cse20 .cse5 .cse6 (<= finddup_~i~1 1) .cse8 .cse9 .cse19 .cse10) (and .cse1 .cse0 .cse5 .cse6 .cse8 .cse9 .cse18 (= finddup_~i~1 0) .cse10) (and .cse14 (<= 1 finddup_~i~1) .cse0 .cse6 (<= (+ finddup_~i~1 3) finddup_~n) .cse13 .cse8 .cse9 .cse15 .cse10 .cse1 .cse5 .cse17 .cse18 .cse19)))))))) [2020-10-28 20:03:18,938 INFO L274 CegarLoopResult]: For program point L36-4(lines 36 44) no Hoare annotation was computed. [2020-10-28 20:03:18,938 INFO L274 CegarLoopResult]: For program point finddupFINAL(lines 33 46) no Hoare annotation was computed. [2020-10-28 20:03:18,938 INFO L274 CegarLoopResult]: For program point L37-2(lines 37 43) no Hoare annotation was computed. [2020-10-28 20:03:18,939 INFO L270 CegarLoopResult]: At program point L37-3(lines 37 43) the Hoare annotation is: (let ((.cse18 (select |#memory_int| finddup_~a.base)) (.cse41 ((as const (Array Int Int)) 0))) (let ((.cse38 (@diff .cse18 .cse41))) (let ((.cse40 (store .cse18 .cse38 0)) (.cse34 (select |old(#memory_int)| |finddup_#in~a.base|))) (let ((.cse45 (@diff .cse34 .cse41)) (.cse19 (* finddup_~j~1 4)) (.cse35 (* finddup_~n 4)) (.cse46 (@diff .cse40 .cse41))) (let ((.cse31 (+ finddup_~i~1 1)) (.cse32 (+ (* 4 finddup_~i~1) 4)) (.cse33 (* 4 finddup_~n)) (.cse17 (select .cse18 .cse46)) (.cse12 (select .cse18 .cse38)) (.cse37 (select .cse18 (+ .cse35 finddup_~a.offset (- 8)))) (.cse15 (not (= .cse41 (store .cse40 .cse46 0)))) (.cse36 (select .cse18 (+ .cse35 finddup_~a.offset (- 4)))) (.cse16 (select .cse18 (+ .cse19 finddup_~a.offset (- 4)))) (.cse42 (+ finddup_~i~1 2)) (.cse43 (store .cse34 .cse45 0))) (let ((.cse9 (= finddup_~i~1 0)) (.cse21 (let ((.cse44 (@diff .cse43 .cse41))) (or (not (= .cse41 (store .cse43 .cse44 0))) (not (= (select .cse34 .cse45) (select .cse34 .cse44)))))) (.cse1 (<= finddup_~j~1 .cse42)) (.cse22 (not (= .cse43 .cse41))) (.cse25 (<= 1 finddup_~i~1)) (.cse20 (<= finddup_~j~1 finddup_~n)) (.cse6 (not (= .cse16 (select .cse18 (+ finddup_~a.offset (* finddup_~i~1 4)))))) (.cse10 (<= .cse42 finddup_~j~1)) (.cse28 (or (let ((.cse39 (+ .cse35 finddup_~a.offset))) (and (not (= (+ .cse38 8) .cse39)) (not (= (+ .cse38 4) .cse39)))) (not (= .cse40 .cse41)))) (.cse29 (or (not (= .cse17 .cse37)) (not (= .cse12 .cse37)) .cse15 (not (= .cse36 0)))) (.cse30 (or (not (= .cse17 .cse36)) (not (= .cse12 .cse36)) (not (= 0 .cse37)) .cse15)) (.cse8 (= finddup_~a.offset |finddup_#in~a.offset|)) (.cse0 (= |finddup_#in~a.base| finddup_~a.base)) (.cse26 (or (and (not (= (select .cse34 (+ .cse35 |finddup_#in~a.offset| (- 4))) (select .cse34 |finddup_#in~a.offset|))) (<= finddup_~i~1 1)) (< .cse32 .cse33))) (.cse2 (= |#memory_int| |old(#memory_int)|)) (.cse3 (= |finddup_#in~_i.base| finddup_~_i.base)) (.cse4 (= |finddup_#in~_j.base| finddup_~_j.base)) (.cse27 (<= .cse32 .cse33)) (.cse5 (= finddup_~_j.offset |finddup_#in~_j.offset|)) (.cse7 (= |finddup_#in~_i.offset| finddup_~_i.offset)) (.cse23 (= finddup_~j~1 .cse31)) (.cse24 (<= finddup_~n .cse31)) (.cse11 (= |finddup_#in~n| finddup_~n))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11) (and .cse2 (<= |finddup_#in~n| 1)) (and (or (let ((.cse13 (select .cse18 (+ .cse19 finddup_~a.offset (- 8))))) (let ((.cse14 (and (not (= .cse17 .cse13)) (not (= .cse16 .cse17))))) (and (or (not (= .cse12 .cse13)) .cse14 .cse15 (not (= .cse16 0))) (or (not (= .cse13 0)) (not (= .cse12 .cse16)) .cse14 .cse15)))) (< finddup_~j~1 finddup_~n)) .cse2 .cse4 .cse5 .cse20 .cse6 .cse7 .cse10 .cse11 .cse0 .cse3 .cse8 .cse9) (and .cse0 .cse21 .cse2 .cse3 .cse4 .cse22 .cse5 .cse20 .cse7 .cse23 .cse24 .cse11) (and .cse0 .cse2 .cse3 .cse4 .cse5 .cse7 .cse8 .cse23 .cse9 .cse11) (and .cse25 .cse26 .cse2 .cse21 .cse4 .cse5 .cse20 .cse6 .cse7 .cse11 .cse0 .cse1 .cse3 .cse22 .cse27 (<= finddup_~n finddup_~j~1)) (and .cse28 .cse25 .cse26 .cse2 .cse4 .cse5 .cse20 .cse6 .cse7 .cse29 .cse10 .cse11 .cse0 .cse3 .cse27 .cse30 .cse8) (and .cse28 .cse26 .cse2 .cse4 .cse5 .cse7 (<= 2 finddup_~j~1) .cse29 .cse11 .cse0 .cse3 .cse27 .cse30 .cse8 .cse23) (and .cse0 .cse26 .cse2 .cse3 .cse4 .cse27 .cse5 .cse7 .cse23 .cse24 .cse11)))))))) [2020-10-28 20:03:18,939 INFO L270 CegarLoopResult]: At program point mkdupENTRY(lines 19 31) the Hoare annotation is: (= |#memory_int| |old(#memory_int)|) [2020-10-28 20:03:18,939 INFO L274 CegarLoopResult]: For program point mkdupFINAL(lines 19 31) no Hoare annotation was computed. [2020-10-28 20:03:18,940 INFO L274 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-10-28 20:03:18,940 INFO L270 CegarLoopResult]: At program point L24(line 24) the Hoare annotation is: (and (= |mkdup_#in~a.offset| mkdup_~a.offset) (= |mkdup_#in~n| mkdup_~n) (or (= (* mkdup_~j~0 4) 0) (< 0 mkdup_~j~0)) (= |#memory_int| |old(#memory_int)|) (<= (+ mkdup_~j~0 1) |mkdup_#in~n|) (or (= (* mkdup_~i~0 4) 0) (and (<= (+ mkdup_~i~0 1) |mkdup_#in~n|) (< 0 mkdup_~i~0))) (= mkdup_~a.base |mkdup_#in~a.base|)) [2020-10-28 20:03:18,940 INFO L270 CegarLoopResult]: At program point L23(line 23) the Hoare annotation is: (and (= |mkdup_#in~a.offset| mkdup_~a.offset) (= |mkdup_#in~n| mkdup_~n) (= |#memory_int| |old(#memory_int)|) (= mkdup_~a.base |mkdup_#in~a.base|)) [2020-10-28 20:03:18,940 INFO L270 CegarLoopResult]: At program point L23-1(line 23) the Hoare annotation is: (let ((.cse0 (* mkdup_~i~0 4))) (let ((.cse2 (= .cse0 0)) (.cse1 (= mkdup_~a.base |mkdup_#in~a.base|))) (and (= |mkdup_#in~n| mkdup_~n) (= |#memory_int| |old(#memory_int)|) (or (and (= |mkdup_#in~a.offset| (+ .cse0 mkdup_~a.offset)) .cse1) (not .cse2)) (<= 1 |mkdup_#in~n|) (or .cse2 (and (= |mkdup_#in~a.offset| mkdup_~a.offset) (<= (+ mkdup_~i~0 1) |mkdup_#in~n|) .cse1 (< 0 mkdup_~i~0)))))) [2020-10-28 20:03:18,940 INFO L274 CegarLoopResult]: For program point mkdupEXIT(lines 19 31) no Hoare annotation was computed. [2020-10-28 20:03:18,940 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-28 20:03:18,940 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-28 20:03:18,940 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-28 20:03:18,940 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-28 20:03:18,940 INFO L274 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-10-28 20:03:18,940 INFO L274 CegarLoopResult]: For program point L16-2(lines 15 17) no Hoare annotation was computed. [2020-10-28 20:03:18,940 INFO L277 CegarLoopResult]: At program point assume_abort_if_notENTRY(lines 15 17) the Hoare annotation is: true [2020-10-28 20:03:18,941 INFO L274 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 15 17) no Hoare annotation was computed. [2020-10-28 20:03:18,941 INFO L270 CegarLoopResult]: At program point L62(line 62) the Hoare annotation is: (let ((.cse0 (select (select |#memory_int| |main_~#i~2.base|) |main_~#i~2.offset|)) (.cse1 (select (select |#memory_int| |main_~#j~2.base|) |main_~#j~2.offset|))) (and (not (= |main_~#i~2.base| main_~a~0.base)) (= (select |#valid| main_~a~0.base) 1) (= main_~a~0.offset 0) (<= 2 main_~n~0) (not (= .cse0 .cse1)) (not (= |main_#t~mem25| |main_#t~mem24|)) (= (select |#valid| |main_#t~malloc16.base|) 1) (= |main_#t~malloc16.offset| 0) (<= (+ main_~a~0.base 1) |#StackHeapBarrier|) (<= (+ |main_#t~malloc16.base| 1) |#StackHeapBarrier|) (not (= main_~a~0.base |main_~#j~2.base|)) (not (= |main_~#i~2.base| |main_~#j~2.base|)) (let ((.cse2 (select |#memory_int| main_~a~0.base))) (= (select .cse2 (+ (* .cse0 4) main_~a~0.offset)) (select .cse2 (+ (* .cse1 4) main_~a~0.offset)))))) [2020-10-28 20:03:18,941 INFO L274 CegarLoopResult]: For program point L62-1(line 62) no Hoare annotation was computed. [2020-10-28 20:03:18,941 INFO L274 CegarLoopResult]: For program point L60(line 60) no Hoare annotation was computed. [2020-10-28 20:03:18,941 INFO L270 CegarLoopResult]: At program point L60-2(line 60) the Hoare annotation is: (let ((.cse0 (select (select |#memory_int| |main_~#i~2.base|) |main_~#i~2.offset|)) (.cse1 (select (select |#memory_int| |main_~#j~2.base|) |main_~#j~2.offset|))) (and (not (= |main_~#i~2.base| main_~a~0.base)) (= (select |#valid| main_~a~0.base) 1) (= main_~a~0.offset 0) (not (= .cse0 .cse1)) (<= 1 .cse1) (= (select |#valid| |main_#t~malloc16.base|) 1) (= |main_#t~malloc16.offset| 0) (<= (+ .cse0 1) main_~n~0) (<= (+ main_~a~0.base 1) |#StackHeapBarrier|) (<= (+ |main_#t~malloc16.base| 1) |#StackHeapBarrier|) (<= (+ .cse1 1) main_~n~0) |main_#t~short20| (not (= |main_~#i~2.base| |main_~#j~2.base|)) (not (= main_~a~0.base |main_~#j~2.base|)) (let ((.cse2 (select |#memory_int| main_~a~0.base))) (= (select .cse2 (+ (* .cse0 4) main_~a~0.offset)) (select .cse2 (+ (* .cse1 4) main_~a~0.offset)))))) [2020-10-28 20:03:18,941 INFO L274 CegarLoopResult]: For program point L60-3(line 60) no Hoare annotation was computed. [2020-10-28 20:03:18,941 INFO L274 CegarLoopResult]: For program point mainEXIT(lines 48 66) no Hoare annotation was computed. [2020-10-28 20:03:18,942 INFO L270 CegarLoopResult]: At program point L54(line 54) the Hoare annotation is: (let ((.cse0 ((as const (Array Int Int)) 0))) (and (= (select |#memory_int| main_~a~0.base) .cse0) (= (select |#valid| |main_#t~malloc16.base|) 1) (= (select |#valid| main_~a~0.base) 1) (= |main_#t~malloc16.offset| 0) (= main_~a~0.offset 0) (= .cse0 (select |#memory_int| |main_#t~malloc16.base|)) (<= (+ main_~a~0.base 1) |#StackHeapBarrier|) (<= (+ |main_#t~malloc16.base| 1) |#StackHeapBarrier|))) [2020-10-28 20:03:18,942 INFO L274 CegarLoopResult]: For program point L54-1(line 54) no Hoare annotation was computed. [2020-10-28 20:03:18,942 INFO L270 CegarLoopResult]: At program point L52(line 52) the Hoare annotation is: (and (= (select |#valid| |main_#t~malloc16.base|) 1) (= |main_#t~malloc16.offset| 0) (= |#memory_int| |old(#memory_int)|) (<= (+ |main_#t~malloc16.base| 1) |#StackHeapBarrier|)) [2020-10-28 20:03:18,942 INFO L274 CegarLoopResult]: For program point L52-1(line 52) no Hoare annotation was computed. [2020-10-28 20:03:18,942 INFO L274 CegarLoopResult]: For program point mainFINAL(lines 48 66) no Hoare annotation was computed. [2020-10-28 20:03:18,942 INFO L270 CegarLoopResult]: At program point L63(line 63) the Hoare annotation is: (and (= |main_#t~mem29| |main_#t~mem28|) (= (select |#valid| |main_#t~malloc16.base|) 1) (not (= |main_~#i~2.base| main_~a~0.base)) (= (select |#valid| main_~a~0.base) 1) (= |main_#t~malloc16.offset| 0) (= main_~a~0.offset 0) (<= 2 main_~n~0) (<= (+ main_~a~0.base 1) |#StackHeapBarrier|) (<= (+ |main_#t~malloc16.base| 1) |#StackHeapBarrier|) (not (= main_~a~0.base |main_~#j~2.base|)) (not (= |main_~#i~2.base| |main_~#j~2.base|)) (let ((.cse0 (select |#memory_int| main_~a~0.base))) (= (select .cse0 (+ (* (select (select |#memory_int| |main_~#i~2.base|) |main_~#i~2.offset|) 4) main_~a~0.offset)) (select .cse0 (+ (* (select (select |#memory_int| |main_~#j~2.base|) |main_~#j~2.offset|) 4) main_~a~0.offset))))) [2020-10-28 20:03:18,942 INFO L274 CegarLoopResult]: For program point L63-1(line 63) no Hoare annotation was computed. [2020-10-28 20:03:18,942 INFO L270 CegarLoopResult]: At program point mainENTRY(lines 48 66) the Hoare annotation is: (and (= |old(#length)| |#length|) (= |#memory_int| |old(#memory_int)|) (= |old(#valid)| |#valid|)) [2020-10-28 20:03:18,942 INFO L274 CegarLoopResult]: For program point L61(line 61) no Hoare annotation was computed. [2020-10-28 20:03:18,943 INFO L270 CegarLoopResult]: At program point L59(line 59) the Hoare annotation is: (let ((.cse0 (select (select |#memory_int| |main_~#i~2.base|) |main_~#i~2.offset|)) (.cse1 (select (select |#memory_int| |main_~#j~2.base|) |main_~#j~2.offset|))) (and (= (select |#valid| |main_#t~malloc16.base|) 1) (not (= |main_~#i~2.base| main_~a~0.base)) (= (select |#valid| main_~a~0.base) 1) (= |main_#t~malloc16.offset| 0) (= main_~a~0.offset 0) (not (= .cse0 .cse1)) (<= (+ main_~a~0.base 1) |#StackHeapBarrier|) (<= (+ |main_#t~malloc16.base| 1) |#StackHeapBarrier|) (not (= main_~a~0.base |main_~#j~2.base|)) (not (= |main_~#i~2.base| |main_~#j~2.base|)) (let ((.cse2 (select |#memory_int| main_~a~0.base))) (= (select .cse2 (+ (* .cse0 4) main_~a~0.offset)) (select .cse2 (+ (* .cse1 4) main_~a~0.offset)))) (let ((.cse3 (<= (+ .cse1 1) main_~n~0)) (.cse4 (<= 1 .cse1)) (.cse5 (<= 1 main_~r~0))) (or (and (<= 1 .cse0) (<= (+ .cse0 1) main_~n~0) .cse3 .cse4 .cse5) (and (= .cse0 0) .cse3 .cse4 .cse5))))) [2020-10-28 20:03:18,943 INFO L270 CegarLoopResult]: At program point L61-2(line 61) the Hoare annotation is: (let ((.cse0 (select (select |#memory_int| |main_~#i~2.base|) |main_~#i~2.offset|)) (.cse1 (select (select |#memory_int| |main_~#j~2.base|) |main_~#j~2.offset|))) (and (= (select |#valid| main_~a~0.base) 1) (not (= |main_~#i~2.base| main_~a~0.base)) (= main_~a~0.offset 0) (<= 2 main_~n~0) (not (= .cse0 .cse1)) (= (select |#valid| |main_#t~malloc16.base|) 1) (= |main_#t~malloc16.offset| 0) (<= (+ .cse0 1) main_~n~0) (<= (+ main_~a~0.base 1) |#StackHeapBarrier|) (<= (+ |main_#t~malloc16.base| 1) |#StackHeapBarrier|) (<= (+ .cse1 1) main_~n~0) (not (= main_~a~0.base |main_~#j~2.base|)) (not (= |main_~#i~2.base| |main_~#j~2.base|)) (let ((.cse2 (select |#memory_int| main_~a~0.base))) (= (select .cse2 (+ (* .cse0 4) main_~a~0.offset)) (select .cse2 (+ (* .cse1 4) main_~a~0.offset)))) |main_#t~short23|)) [2020-10-28 20:03:18,943 INFO L274 CegarLoopResult]: For program point L59-1(line 59) no Hoare annotation was computed. [2020-10-28 20:03:18,943 INFO L274 CegarLoopResult]: For program point L61-3(line 61) no Hoare annotation was computed. [2020-10-28 20:03:18,943 INFO L270 CegarLoopResult]: At program point L57(line 57) the Hoare annotation is: (let ((.cse3 (select |#memory_int| main_~a~0.base))) (and (let ((.cse2 ((as const (Array Int Int)) 0))) (let ((.cse4 (@diff .cse3 .cse2))) (let ((.cse0 (store .cse3 .cse4 0))) (or (let ((.cse1 (@diff .cse0 .cse2))) (and (= (store .cse0 .cse1 0) .cse2) (= (select .cse3 .cse4) (select .cse3 .cse1)))) (= .cse0 .cse2))))) (or (<= 3 main_~n~0) (and (<= 8 (* 4 main_~n~0)) (= (select .cse3 (+ (* main_~n~0 4) main_~a~0.offset (- 4))) (select .cse3 main_~a~0.offset)))) (= (select |#valid| |main_#t~malloc16.base|) 1) (not (= |main_~#i~2.base| main_~a~0.base)) (= (select |#valid| main_~a~0.base) 1) (= main_~a~0.offset 0) (= |main_#t~malloc16.offset| 0) (<= (+ main_~a~0.base 1) |#StackHeapBarrier|) (<= (+ |main_#t~malloc16.base| 1) |#StackHeapBarrier|) (not (= main_~a~0.base |main_~#j~2.base|)) (not (= |main_~#i~2.base| |main_~#j~2.base|)))) [2020-10-28 20:03:18,943 INFO L274 CegarLoopResult]: For program point L57-1(line 57) no Hoare annotation was computed. [2020-10-28 20:03:18,944 INFO L270 CegarLoopResult]: At program point L51(line 51) the Hoare annotation is: (and (= |old(#length)| |#length|) (= |#memory_int| |old(#memory_int)|) (= |old(#valid)| |#valid|)) [2020-10-28 20:03:18,944 INFO L274 CegarLoopResult]: For program point L51-1(line 51) no Hoare annotation was computed. [2020-10-28 20:03:18,944 INFO L277 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 9 11) the Hoare annotation is: true [2020-10-28 20:03:18,944 INFO L274 CegarLoopResult]: For program point L10(line 10) no Hoare annotation was computed. [2020-10-28 20:03:18,944 INFO L274 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 9 11) no Hoare annotation was computed. [2020-10-28 20:03:18,944 INFO L270 CegarLoopResult]: At program point L10-1(line 10) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-10-28 20:03:18,944 INFO L274 CegarLoopResult]: For program point L10-2(line 10) no Hoare annotation was computed. [2020-10-28 20:03:18,944 INFO L274 CegarLoopResult]: For program point L10-4(lines 9 11) no Hoare annotation was computed. [2020-10-28 20:03:18,944 INFO L270 CegarLoopResult]: At program point #Ultimate.meminitENTRY(line -1) the Hoare annotation is: (= |#memory_int| |old(#memory_int)|) [2020-10-28 20:03:18,944 INFO L274 CegarLoopResult]: For program point #Ultimate.meminitEXIT(line -1) no Hoare annotation was computed. [2020-10-28 20:03:18,944 INFO L274 CegarLoopResult]: For program point #Ultimate.meminitFINAL(line -1) no Hoare annotation was computed. [2020-10-28 20:03:18,954 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.IllegalArgumentException: unknown symbol (const Int (Array Int Int)) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:238) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translateSelect(Term2Expression.java:326) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:155) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:394) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:1) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpression(ModelTranslationContainer.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpressionToString(ModelTranslationContainer.java:89) at de.uni_freiburg.informatik.ultimate.core.lib.results.InvariantResult.getLongDescription(InvariantResult.java:65) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.reportResult(TraceAbstractionStarter.java:707) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.createInvariantResults(TraceAbstractionStarter.java:267) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:224) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:134) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2020-10-28 20:03:18,957 INFO L168 Benchmark]: Toolchain (without parser) took 131406.94 ms. Allocated memory was 125.8 MB in the beginning and 733.0 MB in the end (delta: 607.1 MB). Free memory was 101.5 MB in the beginning and 305.4 MB in the end (delta: -203.9 MB). Peak memory consumption was 437.3 MB. Max. memory is 8.0 GB. [2020-10-28 20:03:18,958 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 125.8 MB. Free memory is still 86.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 20:03:18,958 INFO L168 Benchmark]: CACSL2BoogieTranslator took 307.64 ms. Allocated memory is still 125.8 MB. Free memory was 100.8 MB in the beginning and 90.4 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-10-28 20:03:18,958 INFO L168 Benchmark]: Boogie Preprocessor took 57.41 ms. Allocated memory is still 125.8 MB. Free memory was 90.4 MB in the beginning and 88.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-28 20:03:18,959 INFO L168 Benchmark]: RCFGBuilder took 697.93 ms. Allocated memory was 125.8 MB in the beginning and 168.8 MB in the end (delta: 43.0 MB). Free memory was 88.6 MB in the beginning and 143.7 MB in the end (delta: -55.2 MB). Peak memory consumption was 20.0 MB. Max. memory is 8.0 GB. [2020-10-28 20:03:18,959 INFO L168 Benchmark]: TraceAbstraction took 130323.63 ms. Allocated memory was 168.8 MB in the beginning and 733.0 MB in the end (delta: 564.1 MB). Free memory was 143.2 MB in the beginning and 305.4 MB in the end (delta: -162.2 MB). Peak memory consumption was 435.1 MB. Max. memory is 8.0 GB. [2020-10-28 20:03:18,961 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 125.8 MB. Free memory is still 86.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 307.64 ms. Allocated memory is still 125.8 MB. Free memory was 100.8 MB in the beginning and 90.4 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 57.41 ms. Allocated memory is still 125.8 MB. Free memory was 90.4 MB in the beginning and 88.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 697.93 ms. Allocated memory was 125.8 MB in the beginning and 168.8 MB in the end (delta: 43.0 MB). Free memory was 88.6 MB in the beginning and 143.7 MB in the end (delta: -55.2 MB). Peak memory consumption was 20.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 130323.63 ms. Allocated memory was 168.8 MB in the beginning and 733.0 MB in the end (delta: 564.1 MB). Free memory was 143.2 MB in the beginning and 305.4 MB in the end (delta: -162.2 MB). Peak memory consumption was 435.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - ExceptionOrErrorResult: IllegalArgumentException: unknown symbol (const Int (Array Int Int)) de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: IllegalArgumentException: unknown symbol (const Int (Array Int Int)): de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:238) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...