/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/seq-mthreaded-reduced/pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 18:14:07,723 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 18:14:07,727 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 18:14:07,792 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 18:14:07,793 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 18:14:07,801 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 18:14:07,804 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 18:14:07,809 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 18:14:07,813 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 18:14:07,821 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 18:14:07,822 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 18:14:07,824 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 18:14:07,824 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 18:14:07,828 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 18:14:07,830 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 18:14:07,832 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 18:14:07,833 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 18:14:07,838 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 18:14:07,864 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 18:14:07,870 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 18:14:07,871 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 18:14:07,883 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 18:14:07,885 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 18:14:07,889 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 18:14:07,895 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 18:14:07,895 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 18:14:07,896 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 18:14:07,897 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 18:14:07,898 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 18:14:07,903 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 18:14:07,904 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 18:14:07,905 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 18:14:07,905 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 18:14:07,906 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 18:14:07,907 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 18:14:07,908 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 18:14:07,908 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 18:14:07,909 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 18:14:07,909 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 18:14:07,910 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 18:14:07,910 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 18:14:07,912 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 18:14:07,938 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 18:14:07,938 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 18:14:07,939 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 18:14:07,940 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 18:14:07,940 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 18:14:07,940 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 18:14:07,940 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 18:14:07,941 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 18:14:07,941 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 18:14:07,941 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 18:14:07,941 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 18:14:07,941 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 18:14:07,942 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 18:14:07,942 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 18:14:07,942 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 18:14:07,942 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 18:14:07,942 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 18:14:07,943 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 18:14:07,943 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 18:14:07,943 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 18:14:07,943 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 18:14:07,943 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 18:14:07,944 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 18:14:07,944 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 18:14:07,944 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 18:14:07,944 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 18:14:07,945 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 18:14:07,945 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 18:14:07,945 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 18:14:07,945 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 18:14:08,309 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 18:14:08,335 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 18:14:08,338 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 18:14:08,339 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 18:14:08,341 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 18:14:08,342 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-28 18:14:08,434 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9aac9dad2/2c7755fd8da24cda89fbe7ef23e61092/FLAGa4be4092e [2020-10-28 18:14:09,235 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 18:14:09,236 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-28 18:14:09,264 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9aac9dad2/2c7755fd8da24cda89fbe7ef23e61092/FLAGa4be4092e [2020-10-28 18:14:09,483 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9aac9dad2/2c7755fd8da24cda89fbe7ef23e61092 [2020-10-28 18:14:09,486 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 18:14:09,493 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 18:14:09,495 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 18:14:09,495 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 18:14:09,501 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 18:14:09,504 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 06:14:09" (1/1) ... [2020-10-28 18:14:09,508 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b5d76f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:14:09, skipping insertion in model container [2020-10-28 18:14:09,508 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 06:14:09" (1/1) ... [2020-10-28 18:14:09,518 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 18:14:09,616 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 18:14:10,223 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 18:14:10,237 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 18:14:10,493 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 18:14:10,518 INFO L208 MainTranslator]: Completed translation [2020-10-28 18:14:10,519 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:14:10 WrapperNode [2020-10-28 18:14:10,519 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 18:14:10,521 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 18:14:10,521 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 18:14:10,521 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 18:14:10,535 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:14:10" (1/1) ... [2020-10-28 18:14:10,536 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:14:10" (1/1) ... [2020-10-28 18:14:10,556 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:14:10" (1/1) ... [2020-10-28 18:14:10,556 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:14:10" (1/1) ... [2020-10-28 18:14:10,589 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:14:10" (1/1) ... [2020-10-28 18:14:10,617 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:14:10" (1/1) ... [2020-10-28 18:14:10,623 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:14:10" (1/1) ... [2020-10-28 18:14:10,632 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 18:14:10,634 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 18:14:10,634 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 18:14:10,634 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 18:14:10,635 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:14:10" (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 18:14:10,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 18:14:10,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 18:14:10,731 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 18:14:10,731 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 18:14:10,731 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 18:14:10,731 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 18:14:10,731 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 18:14:10,731 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 18:14:10,732 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 18:14:10,732 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-28 18:14:10,732 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-28 18:14:10,732 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-28 18:14:10,732 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-28 18:14:10,732 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 18:14:10,733 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-28 18:14:10,733 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-28 18:14:10,733 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-28 18:14:10,733 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-28 18:14:10,733 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-28 18:14:10,733 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-28 18:14:10,734 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-28 18:14:10,734 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 18:14:10,734 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 18:14:10,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 18:14:10,734 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 18:14:10,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 18:14:10,734 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 18:14:10,735 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 18:14:12,403 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 18:14:12,404 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-28 18:14:12,406 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 06:14:12 BoogieIcfgContainer [2020-10-28 18:14:12,407 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 18:14:12,408 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 18:14:12,409 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 18:14:12,412 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 18:14:12,413 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 06:14:09" (1/3) ... [2020-10-28 18:14:12,413 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50b42601 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 06:14:12, skipping insertion in model container [2020-10-28 18:14:12,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:14:10" (2/3) ... [2020-10-28 18:14:12,414 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50b42601 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 06:14:12, skipping insertion in model container [2020-10-28 18:14:12,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 06:14:12" (3/3) ... [2020-10-28 18:14:12,416 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-28 18:14:12,428 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 18:14:12,434 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 18:14:12,455 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 18:14:12,487 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 18:14:12,487 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 18:14:12,487 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 18:14:12,487 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 18:14:12,487 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 18:14:12,487 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 18:14:12,488 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 18:14:12,488 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 18:14:12,515 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states. [2020-10-28 18:14:12,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-28 18:14:12,533 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:14:12,534 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:14:12,534 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:14:12,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:14:12,541 INFO L82 PathProgramCache]: Analyzing trace with hash -1974680425, now seen corresponding path program 1 times [2020-10-28 18:14:12,551 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:14:12,552 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [181410932] [2020-10-28 18:14:12,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:14:12,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:14:13,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:13,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:13,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:13,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:13,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:14,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:14,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:14,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:14,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:15,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:15,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:16,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:17,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:14:17,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-28 18:14:17,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 18:14:17,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-10-28 18:14:17,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:14:17,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:14:17,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:14:17,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-28 18:14:17,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-28 18:14:17,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 11 [2020-10-28 18:14:18,640 WARN L193 SmtUtils]: Spent 453.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-28 18:14:18,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:14:18,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:14:18,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:18,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:14:18,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:14:18,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:14:18,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 18:14:18,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:14:18,684 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:14:18,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:14:18,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:14:18,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:14:18,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:14:18,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:14:18,759 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [181410932] [2020-10-28 18:14:18,761 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:14:18,762 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 18:14:18,762 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616801008] [2020-10-28 18:14:18,769 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 18:14:18,770 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:14:18,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 18:14:18,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 18:14:18,792 INFO L87 Difference]: Start difference. First operand 397 states. Second operand 4 states. [2020-10-28 18:14:19,339 WARN L193 SmtUtils]: Spent 462.00 ms on a formula simplification that was a NOOP. DAG size: 218 [2020-10-28 18:14:22,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:14:22,347 INFO L93 Difference]: Finished difference Result 719 states and 1275 transitions. [2020-10-28 18:14:22,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:14:22,349 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 146 [2020-10-28 18:14:22,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:14:22,370 INFO L225 Difference]: With dead ends: 719 [2020-10-28 18:14:22,377 INFO L226 Difference]: Without dead ends: 557 [2020-10-28 18:14:22,383 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:14:22,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2020-10-28 18:14:22,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 554. [2020-10-28 18:14:22,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 554 states. [2020-10-28 18:14:22,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 813 transitions. [2020-10-28 18:14:22,530 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 813 transitions. Word has length 146 [2020-10-28 18:14:22,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:14:22,534 INFO L481 AbstractCegarLoop]: Abstraction has 554 states and 813 transitions. [2020-10-28 18:14:22,534 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 18:14:22,535 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 813 transitions. [2020-10-28 18:14:22,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-28 18:14:22,548 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:14:22,549 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:14:22,552 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 18:14:22,554 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:14:22,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:14:22,555 INFO L82 PathProgramCache]: Analyzing trace with hash -1487993520, now seen corresponding path program 1 times [2020-10-28 18:14:22,555 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:14:22,556 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1534830181] [2020-10-28 18:14:22,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:14:22,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:14:22,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:22,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:22,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:22,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:23,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:23,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:23,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:23,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:23,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:23,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:24,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:24,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:25,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:27,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:14:27,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-28 18:14:27,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-28 18:14:27,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-28 18:14:27,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:14:27,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:14:27,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:14:27,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-28 18:14:27,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-28 18:14:27,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:14:28,108 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-28 18:14:28,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:14:28,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:14:28,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:28,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:14:28,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:14:28,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:14:28,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 18:14:28,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:14:28,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:14:28,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:14:28,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:14:28,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:14:28,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:14:28,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:14:28,192 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1534830181] [2020-10-28 18:14:28,193 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:14:28,193 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 18:14:28,193 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295534545] [2020-10-28 18:14:28,195 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 18:14:28,195 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:14:28,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 18:14:28,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 18:14:28,197 INFO L87 Difference]: Start difference. First operand 554 states and 813 transitions. Second operand 4 states. [2020-10-28 18:14:28,653 WARN L193 SmtUtils]: Spent 408.00 ms on a formula simplification that was a NOOP. DAG size: 218 [2020-10-28 18:14:31,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:14:31,042 INFO L93 Difference]: Finished difference Result 1112 states and 1684 transitions. [2020-10-28 18:14:31,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:14:31,044 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 146 [2020-10-28 18:14:31,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:14:31,054 INFO L225 Difference]: With dead ends: 1112 [2020-10-28 18:14:31,055 INFO L226 Difference]: Without dead ends: 895 [2020-10-28 18:14:31,060 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:14:31,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 895 states. [2020-10-28 18:14:31,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 895 to 892. [2020-10-28 18:14:31,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 892 states. [2020-10-28 18:14:31,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 892 states to 892 states and 1329 transitions. [2020-10-28 18:14:31,154 INFO L78 Accepts]: Start accepts. Automaton has 892 states and 1329 transitions. Word has length 146 [2020-10-28 18:14:31,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:14:31,156 INFO L481 AbstractCegarLoop]: Abstraction has 892 states and 1329 transitions. [2020-10-28 18:14:31,156 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 18:14:31,156 INFO L276 IsEmpty]: Start isEmpty. Operand 892 states and 1329 transitions. [2020-10-28 18:14:31,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-28 18:14:31,160 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:14:31,161 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:14:31,161 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 18:14:31,161 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:14:31,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:14:31,162 INFO L82 PathProgramCache]: Analyzing trace with hash 1826334626, now seen corresponding path program 1 times [2020-10-28 18:14:31,162 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:14:31,164 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [18391368] [2020-10-28 18:14:31,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:14:31,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:14:31,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:31,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:31,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:31,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:31,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:31,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:31,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:31,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:32,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:32,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:32,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:32,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:34,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:36,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:14:36,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-28 18:14:36,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-28 18:14:36,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-28 18:14:36,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:14:36,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:14:36,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:14:36,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-28 18:14:36,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-28 18:14:36,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:14:36,680 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-28 18:14:36,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:14:36,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:14:36,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:36,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:14:36,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:14:36,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:14:36,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 18:14:36,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:14:36,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:14:36,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:14:36,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:14:36,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:14:36,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:14:36,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:14:36,758 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [18391368] [2020-10-28 18:14:36,758 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:14:36,759 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 18:14:36,759 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424333348] [2020-10-28 18:14:36,760 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 18:14:36,760 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:14:36,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 18:14:36,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 18:14:36,765 INFO L87 Difference]: Start difference. First operand 892 states and 1329 transitions. Second operand 4 states. [2020-10-28 18:14:37,187 WARN L193 SmtUtils]: Spent 385.00 ms on a formula simplification that was a NOOP. DAG size: 218 [2020-10-28 18:14:39,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:14:39,644 INFO L93 Difference]: Finished difference Result 1940 states and 2975 transitions. [2020-10-28 18:14:39,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:14:39,647 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 146 [2020-10-28 18:14:39,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:14:39,658 INFO L225 Difference]: With dead ends: 1940 [2020-10-28 18:14:39,658 INFO L226 Difference]: Without dead ends: 1575 [2020-10-28 18:14:39,662 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:14:39,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1575 states. [2020-10-28 18:14:39,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1575 to 1572. [2020-10-28 18:14:39,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1572 states. [2020-10-28 18:14:39,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 2365 transitions. [2020-10-28 18:14:39,750 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 2365 transitions. Word has length 146 [2020-10-28 18:14:39,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:14:39,751 INFO L481 AbstractCegarLoop]: Abstraction has 1572 states and 2365 transitions. [2020-10-28 18:14:39,751 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 18:14:39,751 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 2365 transitions. [2020-10-28 18:14:39,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-28 18:14:39,760 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:14:39,760 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:14:39,760 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 18:14:39,761 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:14:39,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:14:39,762 INFO L82 PathProgramCache]: Analyzing trace with hash 1815837561, now seen corresponding path program 1 times [2020-10-28 18:14:39,762 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:14:39,762 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [825315857] [2020-10-28 18:14:39,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:14:39,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:14:39,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:40,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:40,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:40,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:40,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:40,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:40,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:40,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:40,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:41,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:41,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:43,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:43,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:43,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:44,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:14:44,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-28 18:14:44,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-28 18:14:44,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 18:14:44,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:14:44,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:14:44,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:14:44,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 18:14:44,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-28 18:14:44,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:14:45,417 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-28 18:14:45,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:14:45,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:14:45,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:45,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:14:45,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:14:45,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:14:45,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 18:14:45,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:14:45,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:14:45,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:14:45,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:14:45,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:14:45,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:14:45,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:14:45,530 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [825315857] [2020-10-28 18:14:45,531 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:14:45,531 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:14:45,532 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875201699] [2020-10-28 18:14:45,532 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:14:45,532 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:14:45,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:14:45,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:14:45,534 INFO L87 Difference]: Start difference. First operand 1572 states and 2365 transitions. Second operand 5 states. [2020-10-28 18:14:48,413 WARN L193 SmtUtils]: Spent 413.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-28 18:14:49,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:14:49,320 INFO L93 Difference]: Finished difference Result 4527 states and 6811 transitions. [2020-10-28 18:14:49,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 18:14:49,320 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2020-10-28 18:14:49,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:14:49,337 INFO L225 Difference]: With dead ends: 4527 [2020-10-28 18:14:49,337 INFO L226 Difference]: Without dead ends: 3038 [2020-10-28 18:14:49,342 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 18:14:49,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3038 states. [2020-10-28 18:14:49,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3038 to 3015. [2020-10-28 18:14:49,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3015 states. [2020-10-28 18:14:49,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3015 states to 3015 states and 4495 transitions. [2020-10-28 18:14:49,589 INFO L78 Accepts]: Start accepts. Automaton has 3015 states and 4495 transitions. Word has length 146 [2020-10-28 18:14:49,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:14:49,589 INFO L481 AbstractCegarLoop]: Abstraction has 3015 states and 4495 transitions. [2020-10-28 18:14:49,590 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:14:49,590 INFO L276 IsEmpty]: Start isEmpty. Operand 3015 states and 4495 transitions. [2020-10-28 18:14:49,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-10-28 18:14:49,596 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:14:49,596 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:14:49,596 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 18:14:49,596 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:14:49,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:14:49,598 INFO L82 PathProgramCache]: Analyzing trace with hash -1671470061, now seen corresponding path program 1 times [2020-10-28 18:14:49,598 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:14:49,598 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [839910106] [2020-10-28 18:14:49,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:14:49,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:14:49,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:49,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:49,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:49,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:49,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:49,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:50,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:50,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:50,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:50,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:50,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:52,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:52,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:53,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:54,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:54,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:14:54,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-28 18:14:54,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-28 18:14:54,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 18:14:54,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:14:54,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:14:54,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:14:54,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 18:14:54,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-28 18:14:54,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:14:55,125 WARN L193 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-28 18:14:55,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:14:55,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:14:55,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:55,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:14:55,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:14:55,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:14:55,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 18:14:55,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:14:55,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:14:55,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:14:55,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:14:55,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:14:55,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:14:55,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:14:55,232 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [839910106] [2020-10-28 18:14:55,232 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:14:55,232 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:14:55,232 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637899724] [2020-10-28 18:14:55,233 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:14:55,233 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:14:55,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:14:55,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:14:55,245 INFO L87 Difference]: Start difference. First operand 3015 states and 4495 transitions. Second operand 5 states. [2020-10-28 18:14:57,889 WARN L193 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-28 18:14:59,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:14:59,271 INFO L93 Difference]: Finished difference Result 8803 states and 13094 transitions. [2020-10-28 18:14:59,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 18:14:59,272 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 147 [2020-10-28 18:14:59,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:14:59,300 INFO L225 Difference]: With dead ends: 8803 [2020-10-28 18:14:59,300 INFO L226 Difference]: Without dead ends: 5826 [2020-10-28 18:14:59,308 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 18:14:59,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5826 states. [2020-10-28 18:14:59,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5826 to 5773. [2020-10-28 18:14:59,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5773 states. [2020-10-28 18:14:59,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5773 states to 5773 states and 8523 transitions. [2020-10-28 18:14:59,671 INFO L78 Accepts]: Start accepts. Automaton has 5773 states and 8523 transitions. Word has length 147 [2020-10-28 18:14:59,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:14:59,671 INFO L481 AbstractCegarLoop]: Abstraction has 5773 states and 8523 transitions. [2020-10-28 18:14:59,671 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:14:59,672 INFO L276 IsEmpty]: Start isEmpty. Operand 5773 states and 8523 transitions. [2020-10-28 18:14:59,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-28 18:14:59,681 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:14:59,681 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:14:59,681 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 18:14:59,682 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:14:59,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:14:59,682 INFO L82 PathProgramCache]: Analyzing trace with hash 658782714, now seen corresponding path program 1 times [2020-10-28 18:14:59,682 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:14:59,683 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1497760642] [2020-10-28 18:14:59,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:14:59,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:14:59,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:59,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:59,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:59,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:59,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:59,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:00,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:00,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:01,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:01,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:02,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:02,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:03,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:03,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:04,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:04,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:15:04,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-28 18:15:04,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-28 18:15:04,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-28 18:15:04,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:15:04,715 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:15:04,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:15:04,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 18:15:04,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-28 18:15:04,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:15:05,216 WARN L193 SmtUtils]: Spent 401.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-28 18:15:05,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:15:05,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:15:05,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:05,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:15:05,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:15:05,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:15:05,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 18:15:05,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:15:05,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:15:05,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:15:05,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:15:05,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:15:05,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:15:05,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:15:05,315 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1497760642] [2020-10-28 18:15:05,315 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:15:05,315 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:15:05,316 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173094783] [2020-10-28 18:15:05,316 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:15:05,316 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:15:05,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:15:05,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:15:05,317 INFO L87 Difference]: Start difference. First operand 5773 states and 8523 transitions. Second operand 5 states. [2020-10-28 18:15:08,080 WARN L193 SmtUtils]: Spent 416.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-28 18:15:09,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:15:09,003 INFO L93 Difference]: Finished difference Result 16904 states and 24901 transitions. [2020-10-28 18:15:09,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 18:15:09,004 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 148 [2020-10-28 18:15:09,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:15:09,049 INFO L225 Difference]: With dead ends: 16904 [2020-10-28 18:15:09,050 INFO L226 Difference]: Without dead ends: 11177 [2020-10-28 18:15:09,065 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 18:15:09,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11177 states. [2020-10-28 18:15:09,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11177 to 11124. [2020-10-28 18:15:09,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11124 states. [2020-10-28 18:15:09,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11124 states to 11124 states and 16233 transitions. [2020-10-28 18:15:09,804 INFO L78 Accepts]: Start accepts. Automaton has 11124 states and 16233 transitions. Word has length 148 [2020-10-28 18:15:09,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:15:09,805 INFO L481 AbstractCegarLoop]: Abstraction has 11124 states and 16233 transitions. [2020-10-28 18:15:09,805 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:15:09,805 INFO L276 IsEmpty]: Start isEmpty. Operand 11124 states and 16233 transitions. [2020-10-28 18:15:09,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-28 18:15:09,819 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:15:09,820 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:15:09,820 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 18:15:09,820 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:15:09,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:15:09,821 INFO L82 PathProgramCache]: Analyzing trace with hash -1655752588, now seen corresponding path program 1 times [2020-10-28 18:15:09,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:15:09,821 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1413516071] [2020-10-28 18:15:09,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:15:09,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:15:09,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:09,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:09,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:10,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:10,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:10,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:11,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:11,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:14,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:14,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:14,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:15:14,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-28 18:15:14,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-28 18:15:14,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-10-28 18:15:14,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:15:14,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:15:14,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:15:14,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 18:15:14,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-28 18:15:14,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:15:15,367 WARN L193 SmtUtils]: Spent 394.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-28 18:15:15,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:15:15,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:15:15,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:15,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:15:15,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:15:15,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:15:15,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 18:15:15,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:15:15,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:15:15,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:15:15,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:15:15,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:15:15,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:15:15,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:15:15,459 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1413516071] [2020-10-28 18:15:15,460 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:15:15,460 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:15:15,460 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237044389] [2020-10-28 18:15:15,461 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:15:15,461 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:15:15,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:15:15,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:15:15,462 INFO L87 Difference]: Start difference. First operand 11124 states and 16233 transitions. Second operand 5 states. [2020-10-28 18:15:18,599 WARN L193 SmtUtils]: Spent 424.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-28 18:15:20,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:15:20,231 INFO L93 Difference]: Finished difference Result 30259 states and 44005 transitions. [2020-10-28 18:15:20,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 18:15:20,232 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 149 [2020-10-28 18:15:20,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:15:20,294 INFO L225 Difference]: With dead ends: 30259 [2020-10-28 18:15:20,294 INFO L226 Difference]: Without dead ends: 19148 [2020-10-28 18:15:20,316 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 18:15:20,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19148 states. [2020-10-28 18:15:21,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19148 to 19120. [2020-10-28 18:15:21,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19120 states. [2020-10-28 18:15:21,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19120 states to 19120 states and 27467 transitions. [2020-10-28 18:15:21,424 INFO L78 Accepts]: Start accepts. Automaton has 19120 states and 27467 transitions. Word has length 149 [2020-10-28 18:15:21,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:15:21,424 INFO L481 AbstractCegarLoop]: Abstraction has 19120 states and 27467 transitions. [2020-10-28 18:15:21,424 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:15:21,424 INFO L276 IsEmpty]: Start isEmpty. Operand 19120 states and 27467 transitions. [2020-10-28 18:15:21,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-28 18:15:21,452 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:15:21,452 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:15:21,452 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 18:15:21,452 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:15:21,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:15:21,453 INFO L82 PathProgramCache]: Analyzing trace with hash 2012025500, now seen corresponding path program 1 times [2020-10-28 18:15:21,453 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:15:21,453 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [82082239] [2020-10-28 18:15:21,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:15:21,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:15:21,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:21,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:21,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:21,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:21,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:21,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:22,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:22,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:25,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:26,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:15:26,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-28 18:15:26,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 18:15:26,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-28 18:15:26,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:15:26,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:15:26,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:15:26,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 18:15:26,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-28 18:15:26,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:15:26,959 WARN L193 SmtUtils]: Spent 395.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-28 18:15:26,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:15:26,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:15:26,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:26,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:15:26,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:15:26,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:15:26,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 18:15:26,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:15:26,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:15:26,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:15:26,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:15:26,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:15:26,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:15:27,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:15:27,097 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [82082239] [2020-10-28 18:15:27,098 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:15:27,098 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:15:27,098 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542526999] [2020-10-28 18:15:27,099 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:15:27,099 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:15:27,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:15:27,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:15:27,100 INFO L87 Difference]: Start difference. First operand 19120 states and 27467 transitions. Second operand 5 states. [2020-10-28 18:15:30,086 WARN L193 SmtUtils]: Spent 417.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-28 18:15:31,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:15:31,676 INFO L93 Difference]: Finished difference Result 51511 states and 73699 transitions. [2020-10-28 18:15:31,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 18:15:31,676 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 150 [2020-10-28 18:15:31,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:15:31,750 INFO L225 Difference]: With dead ends: 51511 [2020-10-28 18:15:31,751 INFO L226 Difference]: Without dead ends: 32592 [2020-10-28 18:15:31,789 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 18:15:31,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32592 states. [2020-10-28 18:15:33,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32592 to 32524. [2020-10-28 18:15:33,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32524 states. [2020-10-28 18:15:33,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32524 states to 32524 states and 45921 transitions. [2020-10-28 18:15:33,560 INFO L78 Accepts]: Start accepts. Automaton has 32524 states and 45921 transitions. Word has length 150 [2020-10-28 18:15:33,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:15:33,560 INFO L481 AbstractCegarLoop]: Abstraction has 32524 states and 45921 transitions. [2020-10-28 18:15:33,560 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:15:33,560 INFO L276 IsEmpty]: Start isEmpty. Operand 32524 states and 45921 transitions. [2020-10-28 18:15:33,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-10-28 18:15:33,595 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:15:33,596 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:15:33,596 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 18:15:33,596 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:15:33,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:15:33,597 INFO L82 PathProgramCache]: Analyzing trace with hash -959711469, now seen corresponding path program 1 times [2020-10-28 18:15:33,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:15:33,597 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [103481352] [2020-10-28 18:15:33,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:15:33,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:15:33,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:33,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:33,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:33,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:33,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:33,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:36,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:36,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:38,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:15:38,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-28 18:15:38,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 18:15:38,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-28 18:15:38,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:15:38,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:15:38,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:15:38,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 18:15:38,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-28 18:15:38,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:15:39,144 WARN L193 SmtUtils]: Spent 397.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-28 18:15:39,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:15:39,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:15:39,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:39,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:15:39,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:15:39,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:15:39,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 18:15:39,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:15:39,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:15:39,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:15:39,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:15:39,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:15:39,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:15:39,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:15:39,204 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [103481352] [2020-10-28 18:15:39,204 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:15:39,205 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:15:39,205 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684210888] [2020-10-28 18:15:39,205 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:15:39,205 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:15:39,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:15:39,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:15:39,206 INFO L87 Difference]: Start difference. First operand 32524 states and 45921 transitions. Second operand 5 states. [2020-10-28 18:15:43,605 WARN L193 SmtUtils]: Spent 437.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-28 18:15:46,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:15:46,740 INFO L93 Difference]: Finished difference Result 86649 states and 121908 transitions. [2020-10-28 18:15:46,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 18:15:46,741 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 151 [2020-10-28 18:15:46,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:15:46,873 INFO L225 Difference]: With dead ends: 86649 [2020-10-28 18:15:46,874 INFO L226 Difference]: Without dead ends: 55205 [2020-10-28 18:15:46,934 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 18:15:46,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55205 states. [2020-10-28 18:15:50,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55205 to 55137. [2020-10-28 18:15:50,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55137 states. [2020-10-28 18:15:50,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55137 states to 55137 states and 76286 transitions. [2020-10-28 18:15:50,835 INFO L78 Accepts]: Start accepts. Automaton has 55137 states and 76286 transitions. Word has length 151 [2020-10-28 18:15:50,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:15:50,836 INFO L481 AbstractCegarLoop]: Abstraction has 55137 states and 76286 transitions. [2020-10-28 18:15:50,836 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:15:50,836 INFO L276 IsEmpty]: Start isEmpty. Operand 55137 states and 76286 transitions. [2020-10-28 18:15:50,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-28 18:15:50,879 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:15:50,879 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:15:50,879 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 18:15:50,879 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:15:50,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:15:50,880 INFO L82 PathProgramCache]: Analyzing trace with hash 1271055644, now seen corresponding path program 1 times [2020-10-28 18:15:50,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:15:50,880 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2052409185] [2020-10-28 18:15:50,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:15:50,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:15:50,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:51,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:51,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:51,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:51,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:51,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:55,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:15:55,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-28 18:15:55,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 18:15:55,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 18:15:55,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:15:55,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:15:55,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:15:55,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 18:15:55,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-28 18:15:55,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:15:56,412 WARN L193 SmtUtils]: Spent 402.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-28 18:15:56,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:15:56,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:15:56,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:56,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:15:56,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:15:56,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:15:56,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 18:15:56,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:15:56,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:15:56,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:15:56,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:15:56,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:15:56,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:15:56,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:15:56,462 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2052409185] [2020-10-28 18:15:56,462 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:15:56,462 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:15:56,462 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430738340] [2020-10-28 18:15:56,463 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:15:56,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:15:56,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:15:56,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:15:56,464 INFO L87 Difference]: Start difference. First operand 55137 states and 76286 transitions. Second operand 5 states. [2020-10-28 18:16:00,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:16:00,895 INFO L93 Difference]: Finished difference Result 96471 states and 133666 transitions. [2020-10-28 18:16:00,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:16:00,895 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 152 [2020-10-28 18:16:00,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:16:00,968 INFO L225 Difference]: With dead ends: 96471 [2020-10-28 18:16:00,968 INFO L226 Difference]: Without dead ends: 41630 [2020-10-28 18:16:01,019 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:16:01,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41630 states. [2020-10-28 18:16:03,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41630 to 41630. [2020-10-28 18:16:03,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41630 states. [2020-10-28 18:16:03,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41630 states to 41630 states and 57715 transitions. [2020-10-28 18:16:03,557 INFO L78 Accepts]: Start accepts. Automaton has 41630 states and 57715 transitions. Word has length 152 [2020-10-28 18:16:03,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:16:03,557 INFO L481 AbstractCegarLoop]: Abstraction has 41630 states and 57715 transitions. [2020-10-28 18:16:03,557 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:16:03,557 INFO L276 IsEmpty]: Start isEmpty. Operand 41630 states and 57715 transitions. [2020-10-28 18:16:03,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-28 18:16:03,578 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:16:03,578 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:16:03,578 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 18:16:03,578 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:16:03,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:16:03,579 INFO L82 PathProgramCache]: Analyzing trace with hash 1480396938, now seen corresponding path program 1 times [2020-10-28 18:16:03,579 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:16:03,579 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [280802112] [2020-10-28 18:16:03,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:16:03,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:16:03,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:03,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:03,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:03,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:03,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:03,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:03,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:08,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:16:08,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-28 18:16:08,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 18:16:08,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 18:16:08,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:16:08,600 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:16:08,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:16:08,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-28 18:16:08,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 18:16:08,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:16:09,068 WARN L193 SmtUtils]: Spent 403.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-28 18:16:09,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:16:09,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:16:09,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:09,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:16:09,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:16:09,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:16:09,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 18:16:09,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:16:09,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:16:09,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:16:09,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:16:09,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:16:09,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:16:09,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:16:09,131 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [280802112] [2020-10-28 18:16:09,131 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:16:09,131 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:16:09,131 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289022204] [2020-10-28 18:16:09,132 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:16:09,132 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:16:09,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:16:09,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:16:09,133 INFO L87 Difference]: Start difference. First operand 41630 states and 57715 transitions. Second operand 5 states. [2020-10-28 18:16:12,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:16:12,889 INFO L93 Difference]: Finished difference Result 72631 states and 100684 transitions. [2020-10-28 18:16:12,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:16:12,889 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 159 [2020-10-28 18:16:12,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:16:12,932 INFO L225 Difference]: With dead ends: 72631 [2020-10-28 18:16:12,933 INFO L226 Difference]: Without dead ends: 31067 [2020-10-28 18:16:12,971 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:16:13,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31067 states. [2020-10-28 18:16:14,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31067 to 31066. [2020-10-28 18:16:14,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31066 states. [2020-10-28 18:16:15,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31066 states to 31066 states and 43053 transitions. [2020-10-28 18:16:15,024 INFO L78 Accepts]: Start accepts. Automaton has 31066 states and 43053 transitions. Word has length 159 [2020-10-28 18:16:15,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:16:15,024 INFO L481 AbstractCegarLoop]: Abstraction has 31066 states and 43053 transitions. [2020-10-28 18:16:15,024 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:16:15,024 INFO L276 IsEmpty]: Start isEmpty. Operand 31066 states and 43053 transitions. [2020-10-28 18:16:15,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-28 18:16:15,045 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:16:15,045 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:16:15,046 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 18:16:15,046 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:16:15,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:16:15,046 INFO L82 PathProgramCache]: Analyzing trace with hash 798874716, now seen corresponding path program 1 times [2020-10-28 18:16:15,047 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:16:15,047 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [842783984] [2020-10-28 18:16:15,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:16:15,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:16:15,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:15,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:15,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:15,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:15,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:15,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:15,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:15,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:16,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:20,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:16:20,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-10-28 18:16:20,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 18:16:20,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-28 18:16:20,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:16:20,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:16:20,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:16:20,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 18:16:20,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-28 18:16:20,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:16:20,571 WARN L193 SmtUtils]: Spent 383.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-28 18:16:20,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:16:20,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:16:20,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:20,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:16:20,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:16:20,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:16:20,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 18:16:20,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:16:20,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:16:20,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:16:20,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:16:20,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:16:20,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:16:20,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:16:20,631 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [842783984] [2020-10-28 18:16:20,631 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:16:20,632 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:16:20,632 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988110565] [2020-10-28 18:16:20,632 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:16:20,633 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:16:20,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:16:20,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:16:20,634 INFO L87 Difference]: Start difference. First operand 31066 states and 43053 transitions. Second operand 5 states. [2020-10-28 18:16:21,109 WARN L193 SmtUtils]: Spent 431.00 ms on a formula simplification that was a NOOP. DAG size: 221 [2020-10-28 18:16:26,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:16:26,885 INFO L93 Difference]: Finished difference Result 55334 states and 76711 transitions. [2020-10-28 18:16:26,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 18:16:26,887 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 167 [2020-10-28 18:16:26,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:16:26,922 INFO L225 Difference]: With dead ends: 55334 [2020-10-28 18:16:26,922 INFO L226 Difference]: Without dead ends: 31119 [2020-10-28 18:16:26,942 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:16:26,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31119 states. [2020-10-28 18:16:29,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31119 to 31066. [2020-10-28 18:16:29,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31066 states. [2020-10-28 18:16:29,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31066 states to 31066 states and 42877 transitions. [2020-10-28 18:16:29,115 INFO L78 Accepts]: Start accepts. Automaton has 31066 states and 42877 transitions. Word has length 167 [2020-10-28 18:16:29,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:16:29,116 INFO L481 AbstractCegarLoop]: Abstraction has 31066 states and 42877 transitions. [2020-10-28 18:16:29,116 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:16:29,116 INFO L276 IsEmpty]: Start isEmpty. Operand 31066 states and 42877 transitions. [2020-10-28 18:16:29,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-28 18:16:29,143 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:16:29,143 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:16:29,143 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 18:16:29,144 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:16:29,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:16:29,144 INFO L82 PathProgramCache]: Analyzing trace with hash -87281817, now seen corresponding path program 1 times [2020-10-28 18:16:29,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:16:29,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [166572258] [2020-10-28 18:16:29,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:16:29,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:16:29,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:29,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:29,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:29,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:29,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:29,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:32,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:34,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:16:34,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-28 18:16:34,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 18:16:34,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 18:16:34,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:16:34,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:16:34,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:16:34,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 18:16:34,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-28 18:16:34,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:16:34,663 WARN L193 SmtUtils]: Spent 399.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-28 18:16:34,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:16:34,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:16:34,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:34,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:16:34,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:16:34,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:16:34,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 18:16:34,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:16:34,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:16:34,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:16:34,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:16:34,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 18:16:34,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:16:34,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:16:34,746 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [166572258] [2020-10-28 18:16:34,746 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:16:34,746 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:16:34,746 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702245639] [2020-10-28 18:16:34,748 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 18:16:34,748 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:16:34,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 18:16:34,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:16:34,749 INFO L87 Difference]: Start difference. First operand 31066 states and 42877 transitions. Second operand 6 states. [2020-10-28 18:16:35,251 WARN L193 SmtUtils]: Spent 439.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-28 18:16:39,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:16:39,566 INFO L93 Difference]: Finished difference Result 61130 states and 84658 transitions. [2020-10-28 18:16:39,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 18:16:39,566 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 168 [2020-10-28 18:16:39,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:16:39,606 INFO L225 Difference]: With dead ends: 61130 [2020-10-28 18:16:39,606 INFO L226 Difference]: Without dead ends: 31066 [2020-10-28 18:16:39,627 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-28 18:16:39,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31066 states. [2020-10-28 18:16:41,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31066 to 31066. [2020-10-28 18:16:41,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31066 states. [2020-10-28 18:16:41,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31066 states to 31066 states and 42314 transitions. [2020-10-28 18:16:41,731 INFO L78 Accepts]: Start accepts. Automaton has 31066 states and 42314 transitions. Word has length 168 [2020-10-28 18:16:41,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:16:41,732 INFO L481 AbstractCegarLoop]: Abstraction has 31066 states and 42314 transitions. [2020-10-28 18:16:41,732 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 18:16:41,732 INFO L276 IsEmpty]: Start isEmpty. Operand 31066 states and 42314 transitions. [2020-10-28 18:16:41,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-28 18:16:41,750 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:16:41,750 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:16:41,751 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 18:16:41,751 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:16:41,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:16:41,751 INFO L82 PathProgramCache]: Analyzing trace with hash -279682755, now seen corresponding path program 1 times [2020-10-28 18:16:41,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:16:41,752 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1538564131] [2020-10-28 18:16:41,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:16:41,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:16:41,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:41,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:42,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:42,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:42,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:42,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:42,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:42,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:46,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:16:46,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-28 18:16:46,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 18:16:46,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 18:16:46,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:16:46,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:16:46,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:16:46,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 18:16:46,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-28 18:16:46,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:16:47,256 WARN L193 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-28 18:16:47,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:16:47,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:16:47,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:47,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:16:47,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:16:47,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:16:47,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 18:16:47,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:16:47,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:16:47,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:16:47,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:16:47,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 18:16:47,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:16:47,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:16:47,334 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1538564131] [2020-10-28 18:16:47,334 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:16:47,334 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:16:47,334 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24901515] [2020-10-28 18:16:47,335 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 18:16:47,335 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:16:47,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 18:16:47,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:16:47,336 INFO L87 Difference]: Start difference. First operand 31066 states and 42314 transitions. Second operand 6 states. [2020-10-28 18:16:47,792 WARN L193 SmtUtils]: Spent 391.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-28 18:16:51,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:16:51,978 INFO L93 Difference]: Finished difference Result 60865 states and 83217 transitions. [2020-10-28 18:16:51,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 18:16:51,979 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 168 [2020-10-28 18:16:51,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:16:52,013 INFO L225 Difference]: With dead ends: 60865 [2020-10-28 18:16:52,014 INFO L226 Difference]: Without dead ends: 31066 [2020-10-28 18:16:52,035 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-28 18:16:52,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31066 states. [2020-10-28 18:16:54,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31066 to 31066. [2020-10-28 18:16:54,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31066 states. [2020-10-28 18:16:54,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31066 states to 31066 states and 41751 transitions. [2020-10-28 18:16:54,432 INFO L78 Accepts]: Start accepts. Automaton has 31066 states and 41751 transitions. Word has length 168 [2020-10-28 18:16:54,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:16:54,432 INFO L481 AbstractCegarLoop]: Abstraction has 31066 states and 41751 transitions. [2020-10-28 18:16:54,433 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 18:16:54,433 INFO L276 IsEmpty]: Start isEmpty. Operand 31066 states and 41751 transitions. [2020-10-28 18:16:54,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-28 18:16:54,446 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:16:54,447 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:16:54,447 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 18:16:54,447 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:16:54,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:16:54,447 INFO L82 PathProgramCache]: Analyzing trace with hash 902333651, now seen corresponding path program 1 times [2020-10-28 18:16:54,447 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:16:54,447 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1946596342] [2020-10-28 18:16:54,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:16:54,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:16:54,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:54,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:54,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:54,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:54,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:59,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:16:59,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-28 18:16:59,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 18:16:59,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-28 18:16:59,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:16:59,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:16:59,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:16:59,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-28 18:16:59,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-28 18:16:59,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:16:59,969 WARN L193 SmtUtils]: Spent 382.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-28 18:16:59,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:16:59,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:16:59,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:59,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:16:59,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:16:59,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:16:59,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 18:16:59,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:16:59,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:16:59,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:16:59,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:16:59,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:16:59,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:17:00,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:17:00,033 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1946596342] [2020-10-28 18:17:00,033 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:17:00,033 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:17:00,033 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170065378] [2020-10-28 18:17:00,034 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:17:00,034 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:17:00,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:17:00,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:17:00,035 INFO L87 Difference]: Start difference. First operand 31066 states and 41751 transitions. Second operand 5 states. [2020-10-28 18:17:00,464 WARN L193 SmtUtils]: Spent 390.00 ms on a formula simplification that was a NOOP. DAG size: 218 [2020-10-28 18:17:03,480 WARN L193 SmtUtils]: Spent 402.00 ms on a formula simplification that was a NOOP. DAG size: 219 [2020-10-28 18:17:06,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:17:06,541 INFO L93 Difference]: Finished difference Result 54523 states and 76904 transitions. [2020-10-28 18:17:06,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 18:17:06,541 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 168 [2020-10-28 18:17:06,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:17:06,582 INFO L225 Difference]: With dead ends: 54523 [2020-10-28 18:17:06,582 INFO L226 Difference]: Without dead ends: 40608 [2020-10-28 18:17:06,601 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 18:17:06,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40608 states. [2020-10-28 18:17:09,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40608 to 40602. [2020-10-28 18:17:09,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40602 states. [2020-10-28 18:17:09,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40602 states to 40602 states and 55373 transitions. [2020-10-28 18:17:09,859 INFO L78 Accepts]: Start accepts. Automaton has 40602 states and 55373 transitions. Word has length 168 [2020-10-28 18:17:09,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:17:09,859 INFO L481 AbstractCegarLoop]: Abstraction has 40602 states and 55373 transitions. [2020-10-28 18:17:09,859 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:17:09,859 INFO L276 IsEmpty]: Start isEmpty. Operand 40602 states and 55373 transitions. [2020-10-28 18:17:09,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-28 18:17:09,877 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:17:09,877 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:17:09,878 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 18:17:09,878 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:17:09,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:17:09,878 INFO L82 PathProgramCache]: Analyzing trace with hash -172652061, now seen corresponding path program 1 times [2020-10-28 18:17:09,878 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:17:09,878 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [137294611] [2020-10-28 18:17:09,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:17:09,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:17:09,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:17:10,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:17:10,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:17:10,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:17:10,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:17:13,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:17:14,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:17:14,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-28 18:17:14,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 18:17:14,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-28 18:17:14,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:17:14,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:17:14,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:17:14,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-28 18:17:14,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-28 18:17:14,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:17:15,412 WARN L193 SmtUtils]: Spent 392.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-28 18:17:15,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:17:15,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:17:15,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:17:15,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:17:15,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:17:15,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:17:15,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 18:17:15,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:17:15,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:17:15,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:17:15,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:17:15,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:17:15,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:17:15,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:17:15,482 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [137294611] [2020-10-28 18:17:15,482 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:17:15,482 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:17:15,482 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057429142] [2020-10-28 18:17:15,483 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:17:15,483 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:17:15,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:17:15,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:17:15,484 INFO L87 Difference]: Start difference. First operand 40602 states and 55373 transitions. Second operand 5 states. [2020-10-28 18:17:20,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:17:20,077 INFO L93 Difference]: Finished difference Result 69353 states and 94589 transitions. [2020-10-28 18:17:20,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:17:20,077 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 168 [2020-10-28 18:17:20,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:17:20,122 INFO L225 Difference]: With dead ends: 69353 [2020-10-28 18:17:20,122 INFO L226 Difference]: Without dead ends: 37092 [2020-10-28 18:17:20,148 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:17:20,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37092 states. [2020-10-28 18:17:23,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37092 to 37092. [2020-10-28 18:17:23,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37092 states. [2020-10-28 18:17:23,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37092 states to 37092 states and 50533 transitions. [2020-10-28 18:17:23,355 INFO L78 Accepts]: Start accepts. Automaton has 37092 states and 50533 transitions. Word has length 168 [2020-10-28 18:17:23,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:17:23,356 INFO L481 AbstractCegarLoop]: Abstraction has 37092 states and 50533 transitions. [2020-10-28 18:17:23,356 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:17:23,356 INFO L276 IsEmpty]: Start isEmpty. Operand 37092 states and 50533 transitions. [2020-10-28 18:17:23,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-10-28 18:17:23,373 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:17:23,373 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:17:23,374 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 18:17:23,374 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:17:23,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:17:23,374 INFO L82 PathProgramCache]: Analyzing trace with hash -795907240, now seen corresponding path program 1 times [2020-10-28 18:17:23,374 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:17:23,375 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [205687448] [2020-10-28 18:17:23,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:17:23,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:17:23,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:17:23,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:17:23,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:17:23,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:17:24,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:17:28,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:17:28,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-28 18:17:28,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 18:17:28,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-28 18:17:28,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:17:28,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:17:28,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:17:28,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-28 18:17:28,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-28 18:17:28,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:17:28,898 WARN L193 SmtUtils]: Spent 406.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-28 18:17:28,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:17:28,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:17:28,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:17:28,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:17:28,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:17:28,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:17:28,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 18:17:28,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:17:28,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:17:28,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:17:28,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:17:28,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:17:28,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:17:28,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:17:28,955 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [205687448] [2020-10-28 18:17:28,955 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:17:28,956 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:17:28,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262115388] [2020-10-28 18:17:28,957 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:17:28,957 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:17:28,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:17:28,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:17:28,958 INFO L87 Difference]: Start difference. First operand 37092 states and 50533 transitions. Second operand 5 states. [2020-10-28 18:17:29,417 WARN L193 SmtUtils]: Spent 413.00 ms on a formula simplification that was a NOOP. DAG size: 218 [2020-10-28 18:17:32,310 WARN L193 SmtUtils]: Spent 413.00 ms on a formula simplification that was a NOOP. DAG size: 220 [2020-10-28 18:17:34,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:17:34,812 INFO L93 Difference]: Finished difference Result 55743 states and 79118 transitions. [2020-10-28 18:17:34,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 18:17:34,812 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 174 [2020-10-28 18:17:34,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:17:34,860 INFO L225 Difference]: With dead ends: 55743 [2020-10-28 18:17:34,861 INFO L226 Difference]: Without dead ends: 37095 [2020-10-28 18:17:34,887 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-28 18:17:34,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37095 states.