/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/pals_floodmax.3_overflow.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 17:34:51,470 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 17:34:51,473 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 17:34:51,508 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 17:34:51,508 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 17:34:51,510 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 17:34:51,511 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 17:34:51,514 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 17:34:51,516 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 17:34:51,517 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 17:34:51,518 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 17:34:51,520 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 17:34:51,520 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 17:34:51,522 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 17:34:51,523 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 17:34:51,524 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 17:34:51,525 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 17:34:51,526 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 17:34:51,528 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 17:34:51,531 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 17:34:51,533 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 17:34:51,534 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 17:34:51,536 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 17:34:51,537 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 17:34:51,540 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 17:34:51,552 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 17:34:51,552 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 17:34:51,554 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 17:34:51,556 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 17:34:51,559 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 17:34:51,559 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 17:34:51,560 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 17:34:51,561 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 17:34:51,562 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 17:34:51,563 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 17:34:51,563 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 17:34:51,564 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 17:34:51,564 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 17:34:51,565 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 17:34:51,566 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 17:34:51,566 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 17:34:51,573 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 17:34:51,600 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 17:34:51,600 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 17:34:51,602 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 17:34:51,602 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 17:34:51,602 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 17:34:51,603 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 17:34:51,603 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 17:34:51,603 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 17:34:51,603 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 17:34:51,603 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 17:34:51,604 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 17:34:51,604 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 17:34:51,604 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 17:34:51,604 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 17:34:51,604 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 17:34:51,605 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 17:34:51,605 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 17:34:51,605 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 17:34:51,605 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 17:34:51,605 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 17:34:51,606 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 17:34:51,606 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 17:34:51,606 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 17:34:51,606 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 17:34:51,607 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 17:34:51,607 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 17:34:51,607 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 17:34:51,607 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 17:34:51,607 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 17:34:51,607 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 17:34:52,051 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 17:34:52,079 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 17:34:52,082 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 17:34:52,083 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 17:34:52,084 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 17:34:52,085 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_floodmax.3_overflow.ufo.UNBOUNDED.pals.c [2020-10-28 17:34:52,164 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cf19928da/546b02c3919548bb879e9aaccdf555dd/FLAG21fbc03d5 [2020-10-28 17:34:52,925 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 17:34:52,925 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded/pals_floodmax.3_overflow.ufo.UNBOUNDED.pals.c [2020-10-28 17:34:52,944 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cf19928da/546b02c3919548bb879e9aaccdf555dd/FLAG21fbc03d5 [2020-10-28 17:34:53,193 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cf19928da/546b02c3919548bb879e9aaccdf555dd [2020-10-28 17:34:53,197 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 17:34:53,204 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 17:34:53,206 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 17:34:53,206 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 17:34:53,210 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 17:34:53,211 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 05:34:53" (1/1) ... [2020-10-28 17:34:53,215 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@383f74df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:34:53, skipping insertion in model container [2020-10-28 17:34:53,215 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 05:34:53" (1/1) ... [2020-10-28 17:34:53,224 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 17:34:53,263 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 17:34:53,534 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 17:34:53,548 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 17:34:53,655 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 17:34:53,682 INFO L208 MainTranslator]: Completed translation [2020-10-28 17:34:53,683 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:34:53 WrapperNode [2020-10-28 17:34:53,683 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 17:34:53,684 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 17:34:53,684 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 17:34:53,684 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 17:34:53,696 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:34:53" (1/1) ... [2020-10-28 17:34:53,697 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:34:53" (1/1) ... [2020-10-28 17:34:53,709 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:34:53" (1/1) ... [2020-10-28 17:34:53,710 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:34:53" (1/1) ... [2020-10-28 17:34:53,727 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:34:53" (1/1) ... [2020-10-28 17:34:53,741 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:34:53" (1/1) ... [2020-10-28 17:34:53,746 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:34:53" (1/1) ... [2020-10-28 17:34:53,753 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 17:34:53,754 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 17:34:53,754 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 17:34:53,754 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 17:34:53,755 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:34:53" (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 17:34:53,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 17:34:53,849 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 17:34:53,849 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 17:34:53,849 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 17:34:53,849 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2020-10-28 17:34:53,849 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2020-10-28 17:34:53,850 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2020-10-28 17:34:53,850 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-10-28 17:34:53,850 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-28 17:34:53,850 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 17:34:53,850 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2020-10-28 17:34:53,850 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 17:34:53,851 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 17:34:53,851 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 17:34:53,851 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 17:34:53,851 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-28 17:34:53,851 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-28 17:34:53,851 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-28 17:34:53,852 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-28 17:34:53,852 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 17:34:53,852 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-28 17:34:53,852 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-28 17:34:53,852 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-28 17:34:53,852 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-28 17:34:53,852 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-28 17:34:53,853 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-28 17:34:53,853 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-28 17:34:53,853 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 17:34:53,853 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 17:34:53,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 17:34:53,853 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 17:34:53,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 17:34:53,854 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 17:34:53,854 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 17:34:54,888 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 17:34:54,888 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 17:34:54,891 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 05:34:54 BoogieIcfgContainer [2020-10-28 17:34:54,891 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 17:34:54,893 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 17:34:54,893 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 17:34:54,897 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 17:34:54,897 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 05:34:53" (1/3) ... [2020-10-28 17:34:54,898 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@428a5a7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 05:34:54, skipping insertion in model container [2020-10-28 17:34:54,898 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:34:53" (2/3) ... [2020-10-28 17:34:54,899 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@428a5a7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 05:34:54, skipping insertion in model container [2020-10-28 17:34:54,899 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 05:34:54" (3/3) ... [2020-10-28 17:34:54,901 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3_overflow.ufo.UNBOUNDED.pals.c [2020-10-28 17:34:54,914 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 17:34:54,920 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 17:34:54,936 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 17:34:54,968 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 17:34:54,968 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 17:34:54,968 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 17:34:54,968 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 17:34:54,969 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 17:34:54,969 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 17:34:54,969 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 17:34:54,969 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 17:34:54,993 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states. [2020-10-28 17:34:55,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-28 17:34:55,005 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:34:55,006 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] [2020-10-28 17:34:55,006 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:34:55,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:34:55,013 INFO L82 PathProgramCache]: Analyzing trace with hash -2013799790, now seen corresponding path program 1 times [2020-10-28 17:34:55,024 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:34:55,025 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [303424929] [2020-10-28 17:34:55,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:34:55,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:55,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:55,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:55,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-28 17:34:55,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:34:55,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 537 [2020-10-28 17:34:55,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:55,900 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:55,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:34:55,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-28 17:34:55,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:34:55,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 17:34:56,294 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-28 17:34:56,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:34:56,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:56,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:56,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:56,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:34:56,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:34:56,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-28 17:34:56,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:56,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:56,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:34:56,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:34:56,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:34:56,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:34:56,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:34:56,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:56,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:56,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:56,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 17:34:56,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:34:56,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 17:34:56,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:56,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:56,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:34:56,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:34:56,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:34:56,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:34:56,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-28 17:34:56,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:56,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:56,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:56,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:34:56,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:34:56,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:34:56,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:56,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:56,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:34:56,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 17:34:56,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:34:56,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 17:34:56,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-28 17:34:56,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:56,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:56,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:56,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:34:56,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:34:56,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 17:34:56,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:56,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:56,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:34:56,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:34:56,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:34:56,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:34:56,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-28 17:34:56,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:56,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:56,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:56,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:34:56,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:34:56,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:34:56,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:56,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:56,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:34:56,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:34:56,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:34:56,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:56,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-28 17:34:56,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:56,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:56,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:56,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:34:56,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:34:56,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:34:56,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:56,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:56,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:34:56,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:34:56,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:34:56,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:56,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-28 17:34:56,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:56,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:56,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:56,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:34:56,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:34:56,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:34:56,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:56,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:56,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:34:56,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:34:56,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:34:56,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:56,681 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 17:34:56,682 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [303424929] [2020-10-28 17:34:56,684 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:34:56,684 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 17:34:56,685 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657552279] [2020-10-28 17:34:56,690 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 17:34:56,691 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:34:56,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 17:34:56,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 17:34:56,708 INFO L87 Difference]: Start difference. First operand 162 states. Second operand 6 states. [2020-10-28 17:34:57,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:34:57,859 INFO L93 Difference]: Finished difference Result 262 states and 417 transitions. [2020-10-28 17:34:57,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 17:34:57,861 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 63 [2020-10-28 17:34:57,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:34:57,874 INFO L225 Difference]: With dead ends: 262 [2020-10-28 17:34:57,875 INFO L226 Difference]: Without dead ends: 166 [2020-10-28 17:34:57,879 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:34:57,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-10-28 17:34:57,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 154. [2020-10-28 17:34:57,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-10-28 17:34:57,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 247 transitions. [2020-10-28 17:34:57,948 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 247 transitions. Word has length 63 [2020-10-28 17:34:57,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:34:57,948 INFO L481 AbstractCegarLoop]: Abstraction has 154 states and 247 transitions. [2020-10-28 17:34:57,948 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 17:34:57,949 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 247 transitions. [2020-10-28 17:34:57,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-28 17:34:57,952 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:34:57,952 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] [2020-10-28 17:34:57,953 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 17:34:57,953 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:34:57,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:34:57,953 INFO L82 PathProgramCache]: Analyzing trace with hash 1886800720, now seen corresponding path program 1 times [2020-10-28 17:34:57,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:34:57,954 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1755770478] [2020-10-28 17:34:57,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:34:57,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:58,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:58,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:58,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-28 17:34:58,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:34:58,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 633 [2020-10-28 17:34:58,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:58,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:58,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 17:34:58,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-28 17:34:58,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:34:58,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:58,977 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-28 17:34:58,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:34:58,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:58,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:59,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:59,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:34:59,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:34:59,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-28 17:34:59,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:59,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:59,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:34:59,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:34:59,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:34:59,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:59,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:34:59,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:59,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:59,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:59,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 17:34:59,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:34:59,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-28 17:34:59,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:59,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:59,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:34:59,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:34:59,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 17:34:59,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:59,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-28 17:34:59,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:59,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:59,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:59,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:34:59,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:34:59,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:34:59,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:59,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:59,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:34:59,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:34:59,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:34:59,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:34:59,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-28 17:34:59,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:59,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:59,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:59,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:34:59,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:34:59,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:34:59,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:59,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:59,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:34:59,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:34:59,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:34:59,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:59,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-28 17:34:59,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:59,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:59,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:59,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:34:59,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:34:59,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:34:59,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:59,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:59,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:34:59,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:34:59,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:34:59,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:59,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-28 17:34:59,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:59,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:59,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:59,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:34:59,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:34:59,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:34:59,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:59,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:59,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:34:59,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:34:59,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:34:59,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:59,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-28 17:34:59,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:59,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:59,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:59,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:34:59,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:34:59,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:34:59,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:59,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:59,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:34:59,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:34:59,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:34:59,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:59,372 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 17:34:59,372 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1755770478] [2020-10-28 17:34:59,372 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:34:59,372 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-28 17:34:59,373 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306406667] [2020-10-28 17:34:59,374 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 17:34:59,375 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:34:59,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 17:34:59,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-28 17:34:59,376 INFO L87 Difference]: Start difference. First operand 154 states and 247 transitions. Second operand 12 states. [2020-10-28 17:34:59,941 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-28 17:35:00,218 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-28 17:35:00,557 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-28 17:35:00,819 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 17:35:02,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:35:02,441 INFO L93 Difference]: Finished difference Result 257 states and 405 transitions. [2020-10-28 17:35:02,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 17:35:02,442 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 63 [2020-10-28 17:35:02,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:35:02,448 INFO L225 Difference]: With dead ends: 257 [2020-10-28 17:35:02,448 INFO L226 Difference]: Without dead ends: 166 [2020-10-28 17:35:02,451 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2020-10-28 17:35:02,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-10-28 17:35:02,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 154. [2020-10-28 17:35:02,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-10-28 17:35:02,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 220 transitions. [2020-10-28 17:35:02,490 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 220 transitions. Word has length 63 [2020-10-28 17:35:02,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:35:02,490 INFO L481 AbstractCegarLoop]: Abstraction has 154 states and 220 transitions. [2020-10-28 17:35:02,490 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 17:35:02,490 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 220 transitions. [2020-10-28 17:35:02,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-28 17:35:02,494 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:35:02,494 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] [2020-10-28 17:35:02,494 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 17:35:02,494 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:35:02,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:35:02,495 INFO L82 PathProgramCache]: Analyzing trace with hash -454625351, now seen corresponding path program 1 times [2020-10-28 17:35:02,495 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:35:02,495 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1436703255] [2020-10-28 17:35:02,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:35:02,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:02,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:02,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:02,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:03,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:07,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:07,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 17:35:07,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:35:07,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-28 17:35:07,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:07,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:07,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:35:07,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-28 17:35:07,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-28 17:35:07,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 17:35:07,898 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-28 17:35:07,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:35:07,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:07,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:07,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:07,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:35:07,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:35:07,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 17:35:07,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:07,918 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:07,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:35:07,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:35:07,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:35:07,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:07,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:35:07,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:07,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:07,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:07,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-28 17:35:07,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:35:07,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-28 17:35:07,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:07,986 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:07,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:35:07,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:35:07,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 17:35:07,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:08,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-28 17:35:08,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:08,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:08,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:08,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:35:08,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:35:08,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:35:08,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:08,025 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:08,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:35:08,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:35:08,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:35:08,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:08,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-28 17:35:08,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:08,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:08,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:08,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:35:08,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:35:08,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:35:08,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:08,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:08,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:35:08,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:35:08,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:35:08,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:08,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-28 17:35:08,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:08,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:08,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:08,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:35:08,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:35:08,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:35:08,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:08,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:08,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:35:08,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:35:08,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:35:08,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:08,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-28 17:35:08,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:08,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:08,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:08,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:35:08,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:35:08,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 17:35:08,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:08,171 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:08,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:35:08,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:35:08,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:35:08,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:08,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-28 17:35:08,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:08,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:08,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:08,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:35:08,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:35:08,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:35:08,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:08,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:08,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:35:08,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:35:08,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:35:08,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:08,250 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 17:35:08,250 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1436703255] [2020-10-28 17:35:08,251 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:35:08,251 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 17:35:08,252 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450873732] [2020-10-28 17:35:08,252 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 17:35:08,252 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:35:08,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 17:35:08,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:35:08,258 INFO L87 Difference]: Start difference. First operand 154 states and 220 transitions. Second operand 9 states. [2020-10-28 17:35:08,528 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-28 17:35:10,746 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-28 17:35:10,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:35:10,945 INFO L93 Difference]: Finished difference Result 346 states and 516 transitions. [2020-10-28 17:35:10,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 17:35:10,947 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 89 [2020-10-28 17:35:10,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:35:10,954 INFO L225 Difference]: With dead ends: 346 [2020-10-28 17:35:10,954 INFO L226 Difference]: Without dead ends: 261 [2020-10-28 17:35:10,956 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2020-10-28 17:35:10,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2020-10-28 17:35:11,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 231. [2020-10-28 17:35:11,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2020-10-28 17:35:11,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 340 transitions. [2020-10-28 17:35:11,019 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 340 transitions. Word has length 89 [2020-10-28 17:35:11,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:35:11,019 INFO L481 AbstractCegarLoop]: Abstraction has 231 states and 340 transitions. [2020-10-28 17:35:11,019 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 17:35:11,019 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 340 transitions. [2020-10-28 17:35:11,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-28 17:35:11,027 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:35:11,027 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] [2020-10-28 17:35:11,028 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 17:35:11,028 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:35:11,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:35:11,028 INFO L82 PathProgramCache]: Analyzing trace with hash -712665174, now seen corresponding path program 1 times [2020-10-28 17:35:11,029 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:35:11,029 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1255168572] [2020-10-28 17:35:11,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:35:11,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:11,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:11,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:11,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:11,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:12,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:16,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:16,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-28 17:35:16,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:35:16,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-28 17:35:16,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:16,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:16,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:35:16,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 17:35:16,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-28 17:35:16,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:16,361 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-28 17:35:16,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:35:16,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:16,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:16,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:16,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:35:16,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:35:16,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 17:35:16,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:16,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:16,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:35:16,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:35:16,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:35:16,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:16,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:35:16,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:16,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:16,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:16,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-28 17:35:16,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:35:16,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-28 17:35:16,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:16,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:16,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:35:16,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:35:16,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 17:35:16,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:16,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-28 17:35:16,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:16,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:16,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:16,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:35:16,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:35:16,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:35:16,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:16,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:16,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:35:16,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:35:16,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:35:16,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:16,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-28 17:35:16,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:16,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:16,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:16,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:35:16,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:35:16,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 17:35:16,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:16,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:16,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:35:16,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:35:16,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:35:16,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:16,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-28 17:35:16,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:16,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:16,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:16,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:35:16,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:35:16,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:35:16,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:16,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:16,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:35:16,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:35:16,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:35:16,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:16,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-28 17:35:16,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:16,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:16,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:16,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 17:35:16,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:35:16,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:35:16,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:16,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:16,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:35:16,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 17:35:16,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 17:35:16,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:16,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-28 17:35:16,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:16,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:16,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:16,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:35:16,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:35:16,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:35:16,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:16,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:16,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:35:16,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:35:16,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:35:16,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:16,768 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 17:35:16,769 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1255168572] [2020-10-28 17:35:16,769 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:35:16,769 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 17:35:16,770 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838986368] [2020-10-28 17:35:16,770 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 17:35:16,770 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:35:16,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 17:35:16,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:35:16,771 INFO L87 Difference]: Start difference. First operand 231 states and 340 transitions. Second operand 9 states. [2020-10-28 17:35:17,018 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-28 17:35:17,309 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-28 17:35:17,862 WARN L193 SmtUtils]: Spent 488.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 183 [2020-10-28 17:35:18,169 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-28 17:35:19,282 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 17:35:22,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:35:22,176 INFO L93 Difference]: Finished difference Result 890 states and 1327 transitions. [2020-10-28 17:35:22,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-28 17:35:22,178 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 91 [2020-10-28 17:35:22,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:35:22,186 INFO L225 Difference]: With dead ends: 890 [2020-10-28 17:35:22,186 INFO L226 Difference]: Without dead ends: 685 [2020-10-28 17:35:22,190 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2020-10-28 17:35:22,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 685 states. [2020-10-28 17:35:22,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 685 to 618. [2020-10-28 17:35:22,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 618 states. [2020-10-28 17:35:22,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 618 states to 618 states and 912 transitions. [2020-10-28 17:35:22,305 INFO L78 Accepts]: Start accepts. Automaton has 618 states and 912 transitions. Word has length 91 [2020-10-28 17:35:22,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:35:22,305 INFO L481 AbstractCegarLoop]: Abstraction has 618 states and 912 transitions. [2020-10-28 17:35:22,305 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 17:35:22,306 INFO L276 IsEmpty]: Start isEmpty. Operand 618 states and 912 transitions. [2020-10-28 17:35:22,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-28 17:35:22,311 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:35:22,311 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] [2020-10-28 17:35:22,312 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 17:35:22,312 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:35:22,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:35:22,312 INFO L82 PathProgramCache]: Analyzing trace with hash -362503820, now seen corresponding path program 1 times [2020-10-28 17:35:22,313 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:35:22,313 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1418060210] [2020-10-28 17:35:22,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:35:22,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:22,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:22,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:22,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:22,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:22,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:25,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:27,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:27,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-28 17:35:27,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 17:35:27,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-28 17:35:27,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:27,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:27,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:35:27,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 17:35:27,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-28 17:35:27,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:27,654 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-28 17:35:27,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:35:27,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:27,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:27,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:27,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:35:27,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:35:27,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 17:35:27,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:27,672 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:27,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:35:27,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:35:27,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:35:27,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:27,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:35:27,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:27,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:27,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:27,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-28 17:35:27,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:35:27,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-28 17:35:27,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:27,736 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:27,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:35:27,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:35:27,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 17:35:27,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:27,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-28 17:35:27,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:27,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:27,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:27,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:35:27,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:35:27,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:35:27,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:27,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:27,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:35:27,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:35:27,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:35:27,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:27,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-28 17:35:27,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:27,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:27,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:27,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:35:27,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:35:27,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:35:27,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:27,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:27,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:35:27,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:35:27,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:35:27,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:27,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-28 17:35:27,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:27,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:27,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:27,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:35:27,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:35:27,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 17:35:27,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:27,867 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:27,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:35:27,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:35:27,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:35:27,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:27,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-28 17:35:27,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:27,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:27,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:27,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 17:35:27,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:35:27,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 17:35:27,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:27,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:27,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:35:27,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-28 17:35:27,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:35:27,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:27,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-28 17:35:27,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:27,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:27,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:27,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:35:27,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:35:27,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:35:27,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:27,955 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:27,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:35:27,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:35:27,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:35:27,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:27,982 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 17:35:27,983 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1418060210] [2020-10-28 17:35:27,983 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:35:27,983 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 17:35:27,983 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851946768] [2020-10-28 17:35:27,984 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 17:35:27,984 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:35:27,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 17:35:27,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:35:27,985 INFO L87 Difference]: Start difference. First operand 618 states and 912 transitions. Second operand 9 states. [2020-10-28 17:35:28,233 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-28 17:35:28,442 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-28 17:35:28,749 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-28 17:35:28,977 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 17:35:29,720 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 17:35:31,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:35:31,873 INFO L93 Difference]: Finished difference Result 1900 states and 2817 transitions. [2020-10-28 17:35:31,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-28 17:35:31,874 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 91 [2020-10-28 17:35:31,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:35:31,883 INFO L225 Difference]: With dead ends: 1900 [2020-10-28 17:35:31,883 INFO L226 Difference]: Without dead ends: 1314 [2020-10-28 17:35:31,886 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2020-10-28 17:35:31,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1314 states. [2020-10-28 17:35:31,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1314 to 1201. [2020-10-28 17:35:31,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1201 states. [2020-10-28 17:35:31,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1201 states to 1201 states and 1739 transitions. [2020-10-28 17:35:31,999 INFO L78 Accepts]: Start accepts. Automaton has 1201 states and 1739 transitions. Word has length 91 [2020-10-28 17:35:32,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:35:32,000 INFO L481 AbstractCegarLoop]: Abstraction has 1201 states and 1739 transitions. [2020-10-28 17:35:32,000 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 17:35:32,000 INFO L276 IsEmpty]: Start isEmpty. Operand 1201 states and 1739 transitions. [2020-10-28 17:35:32,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-28 17:35:32,004 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:35:32,004 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] [2020-10-28 17:35:32,005 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 17:35:32,005 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:35:32,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:35:32,005 INFO L82 PathProgramCache]: Analyzing trace with hash 41748018, now seen corresponding path program 1 times [2020-10-28 17:35:32,006 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:35:32,006 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1195304195] [2020-10-28 17:35:32,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:35:32,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:32,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:32,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:32,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:32,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:32,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:37,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:37,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-28 17:35:37,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:35:37,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-28 17:35:37,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:37,048 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:37,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:35:37,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 17:35:37,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-28 17:35:37,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:37,277 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-28 17:35:37,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:35:37,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:37,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:37,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:37,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:35:37,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:35:37,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 17:35:37,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:37,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:37,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:35:37,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:35:37,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:35:37,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:37,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:35:37,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:37,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:37,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:37,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-28 17:35:37,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:35:37,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-28 17:35:37,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:37,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:37,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:35:37,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:35:37,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 17:35:37,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:37,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-28 17:35:37,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:37,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:37,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:37,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:35:37,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:35:37,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:35:37,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:37,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:37,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:35:37,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:35:37,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:35:37,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:37,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-28 17:35:37,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:37,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:37,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:37,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:35:37,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:35:37,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:35:37,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:37,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:37,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:35:37,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:35:37,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:35:37,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:37,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-28 17:35:37,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:37,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:37,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:37,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:35:37,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:35:37,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:35:37,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:37,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:37,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:35:37,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:35:37,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:35:37,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:37,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-28 17:35:37,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:37,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:37,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:37,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:35:37,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:35:37,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 17:35:37,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:37,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:37,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:35:37,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 17:35:37,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:35:37,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:37,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-28 17:35:37,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:37,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:37,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:37,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:35:37,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:35:37,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:35:37,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:37,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:37,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:35:37,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:35:37,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:35:37,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:37,631 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 17:35:37,631 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1195304195] [2020-10-28 17:35:37,633 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:35:37,633 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 17:35:37,633 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363339107] [2020-10-28 17:35:37,635 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 17:35:37,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:35:37,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 17:35:37,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:35:37,638 INFO L87 Difference]: Start difference. First operand 1201 states and 1739 transitions. Second operand 9 states. [2020-10-28 17:35:37,878 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-28 17:35:38,140 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-28 17:35:38,439 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-28 17:35:39,123 WARN L193 SmtUtils]: Spent 442.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 183 [2020-10-28 17:35:39,877 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 17:35:42,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:35:42,730 INFO L93 Difference]: Finished difference Result 3855 states and 5696 transitions. [2020-10-28 17:35:42,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-28 17:35:42,731 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 92 [2020-10-28 17:35:42,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:35:42,748 INFO L225 Difference]: With dead ends: 3855 [2020-10-28 17:35:42,748 INFO L226 Difference]: Without dead ends: 2884 [2020-10-28 17:35:42,753 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2020-10-28 17:35:42,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2884 states. [2020-10-28 17:35:42,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2884 to 2647. [2020-10-28 17:35:42,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2647 states. [2020-10-28 17:35:42,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2647 states to 2647 states and 3854 transitions. [2020-10-28 17:35:42,998 INFO L78 Accepts]: Start accepts. Automaton has 2647 states and 3854 transitions. Word has length 92 [2020-10-28 17:35:42,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:35:42,998 INFO L481 AbstractCegarLoop]: Abstraction has 2647 states and 3854 transitions. [2020-10-28 17:35:42,998 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 17:35:42,998 INFO L276 IsEmpty]: Start isEmpty. Operand 2647 states and 3854 transitions. [2020-10-28 17:35:43,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-28 17:35:43,007 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:35:43,007 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] [2020-10-28 17:35:43,007 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 17:35:43,007 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:35:43,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:35:43,008 INFO L82 PathProgramCache]: Analyzing trace with hash -921107381, now seen corresponding path program 1 times [2020-10-28 17:35:43,008 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:35:43,009 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [403511878] [2020-10-28 17:35:43,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:35:43,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:43,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:43,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:43,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:43,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:43,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:47,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:48,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:48,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-28 17:35:48,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 17:35:48,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-28 17:35:48,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:48,041 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:48,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:35:48,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 17:35:48,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-28 17:35:48,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:48,266 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-28 17:35:48,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:35:48,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:48,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:48,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:48,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:35:48,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:35:48,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 17:35:48,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:48,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:48,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:35:48,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:35:48,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:35:48,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:48,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:35:48,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:48,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:48,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:48,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:48,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:48,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-28 17:35:48,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 17:35:48,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-28 17:35:48,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:48,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:48,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:35:48,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-28 17:35:48,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-28 17:35:48,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:48,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-28 17:35:48,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:48,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:48,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:48,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:35:48,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:35:48,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:35:48,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:48,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:48,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:35:48,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:35:48,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:35:48,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:48,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-28 17:35:48,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:48,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:48,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:48,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:35:48,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:35:48,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:35:48,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:48,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:48,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:35:48,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:35:48,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:35:48,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:48,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-28 17:35:48,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:48,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:48,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:48,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:35:48,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:35:48,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:35:48,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:48,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:48,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:35:48,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:35:48,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:35:48,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:48,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-28 17:35:48,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:48,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:48,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:48,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 17:35:48,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:35:48,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:35:48,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:48,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:48,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:35:48,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-28 17:35:48,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:35:48,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:48,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-28 17:35:48,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:48,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:48,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:48,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:35:48,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:35:48,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:35:48,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:48,630 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:48,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:35:48,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:35:48,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:35:48,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:48,656 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 17:35:48,656 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [403511878] [2020-10-28 17:35:48,657 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:35:48,657 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-28 17:35:48,658 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768377598] [2020-10-28 17:35:48,658 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 17:35:48,662 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:35:48,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 17:35:48,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-28 17:35:48,663 INFO L87 Difference]: Start difference. First operand 2647 states and 3854 transitions. Second operand 10 states. [2020-10-28 17:35:48,908 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-28 17:35:49,291 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 17:35:49,638 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-28 17:35:49,947 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 17:35:50,261 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 17:35:50,521 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-28 17:35:50,825 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-28 17:35:51,110 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-28 17:35:55,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:35:55,363 INFO L93 Difference]: Finished difference Result 9441 states and 13884 transitions. [2020-10-28 17:35:55,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-28 17:35:55,364 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 92 [2020-10-28 17:35:55,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:35:55,404 INFO L225 Difference]: With dead ends: 9441 [2020-10-28 17:35:55,405 INFO L226 Difference]: Without dead ends: 6803 [2020-10-28 17:35:55,415 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=189, Invalid=513, Unknown=0, NotChecked=0, Total=702 [2020-10-28 17:35:55,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6803 states. [2020-10-28 17:35:56,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6803 to 6317. [2020-10-28 17:35:56,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6317 states. [2020-10-28 17:35:56,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6317 states to 6317 states and 9270 transitions. [2020-10-28 17:35:56,035 INFO L78 Accepts]: Start accepts. Automaton has 6317 states and 9270 transitions. Word has length 92 [2020-10-28 17:35:56,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:35:56,035 INFO L481 AbstractCegarLoop]: Abstraction has 6317 states and 9270 transitions. [2020-10-28 17:35:56,035 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 17:35:56,035 INFO L276 IsEmpty]: Start isEmpty. Operand 6317 states and 9270 transitions. [2020-10-28 17:35:56,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-28 17:35:56,050 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:35:56,050 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] [2020-10-28 17:35:56,051 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 17:35:56,051 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:35:56,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:35:56,051 INFO L82 PathProgramCache]: Analyzing trace with hash 457880453, now seen corresponding path program 1 times [2020-10-28 17:35:56,051 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:35:56,052 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [42766805] [2020-10-28 17:35:56,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:35:56,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:56,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:56,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:56,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:56,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:36:01,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:36:01,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-28 17:36:01,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:36:01,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-28 17:36:01,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:36:01,097 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:36:01,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:36:01,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 17:36:01,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-28 17:36:01,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:36:01,431 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-28 17:36:01,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:36:01,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:36:01,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:36:01,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:36:01,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:36:01,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:36:01,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 17:36:01,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:36:01,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:36:01,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:36:01,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:36:01,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:36:01,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:36:01,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:36:01,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:36:01,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:36:01,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:36:01,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-28 17:36:01,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:36:01,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-28 17:36:01,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:36:01,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:36:01,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:36:01,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:36:01,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:36:01,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:36:01,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-28 17:36:01,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:36:01,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:36:01,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:36:01,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:36:01,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:36:01,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:36:01,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:36:01,585 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:36:01,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:36:01,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:36:01,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:36:01,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:36:01,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-28 17:36:01,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:36:01,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:36:01,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:36:01,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:36:01,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:36:01,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:36:01,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:36:01,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:36:01,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:36:01,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:36:01,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:36:01,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:36:01,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-28 17:36:01,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:36:01,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:36:01,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:36:01,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:36:01,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:36:01,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:36:01,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:36:01,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:36:01,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:36:01,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:36:01,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:36:01,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:36:01,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-28 17:36:01,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:36:01,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:36:01,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:36:01,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 17:36:01,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:36:01,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 17:36:01,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:36:01,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:36:01,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:36:01,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-28 17:36:01,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:36:01,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:36:01,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-28 17:36:01,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:36:01,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:36:01,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:36:01,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:36:01,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:36:01,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:36:01,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:36:01,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:36:01,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:36:01,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:36:01,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:36:01,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:36:01,768 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 17:36:01,769 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [42766805] [2020-10-28 17:36:01,770 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:36:01,770 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 17:36:01,770 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683395390] [2020-10-28 17:36:01,771 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 17:36:01,771 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:36:01,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 17:36:01,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:36:01,772 INFO L87 Difference]: Start difference. First operand 6317 states and 9270 transitions. Second operand 9 states. [2020-10-28 17:36:02,019 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-28 17:36:02,259 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-28 17:36:02,599 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-28 17:36:02,860 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 17:36:03,528 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 17:36:06,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:36:06,081 INFO L93 Difference]: Finished difference Result 12296 states and 17893 transitions. [2020-10-28 17:36:06,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-28 17:36:06,082 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 93 [2020-10-28 17:36:06,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:36:06,116 INFO L225 Difference]: With dead ends: 12296 [2020-10-28 17:36:06,116 INFO L226 Difference]: Without dead ends: 6145 [2020-10-28 17:36:06,135 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2020-10-28 17:36:06,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6145 states. [2020-10-28 17:36:06,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6145 to 5107. [2020-10-28 17:36:06,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5107 states. [2020-10-28 17:36:06,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5107 states to 5107 states and 7276 transitions. [2020-10-28 17:36:06,565 INFO L78 Accepts]: Start accepts. Automaton has 5107 states and 7276 transitions. Word has length 93 [2020-10-28 17:36:06,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:36:06,566 INFO L481 AbstractCegarLoop]: Abstraction has 5107 states and 7276 transitions. [2020-10-28 17:36:06,566 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 17:36:06,566 INFO L276 IsEmpty]: Start isEmpty. Operand 5107 states and 7276 transitions. [2020-10-28 17:36:06,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-28 17:36:06,577 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:36:06,578 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] [2020-10-28 17:36:06,578 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 17:36:06,578 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:36:06,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:36:06,579 INFO L82 PathProgramCache]: Analyzing trace with hash 1749871770, now seen corresponding path program 1 times [2020-10-28 17:36:06,579 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:36:06,579 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1486914323] [2020-10-28 17:36:06,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:36:06,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:36:06,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:36:06,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:36:06,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:36:06,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:36:07,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:36:11,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:36:11,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-28 17:36:11,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:36:11,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-28 17:36:11,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:36:11,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:36:11,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:36:11,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-28 17:36:11,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-28 17:36:11,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:36:11,923 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-28 17:36:11,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:36:11,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:36:11,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:36:11,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:36:11,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:36:11,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:36:11,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:36:11,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:36:11,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:36:11,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:36:11,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:36:11,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:36:11,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:36:11,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:36:11,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:36:11,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:36:11,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:36:11,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-28 17:36:11,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:36:11,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-28 17:36:11,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:36:11,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:36:11,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:36:11,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:36:11,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-28 17:36:11,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:36:11,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-28 17:36:12,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:36:12,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:36:12,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:36:12,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:36:12,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:36:12,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:36:12,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:36:12,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:36:12,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:36:12,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:36:12,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:36:12,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:36:12,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-28 17:36:12,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:36:12,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:36:12,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:36:12,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:36:12,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:36:12,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:36:12,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:36:12,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:36:12,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:36:12,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:36:12,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:36:12,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:36:12,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-28 17:36:12,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:36:12,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:36:12,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:36:12,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:36:12,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:36:12,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 17:36:12,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:36:12,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:36:12,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:36:12,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:36:12,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:36:12,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:36:12,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-28 17:36:12,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:36:12,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:36:12,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:36:12,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 17:36:12,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:36:12,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:36:12,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:36:12,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:36:12,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:36:12,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:36:12,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:36:12,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:36:12,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-28 17:36:12,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:36:12,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:36:12,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:36:12,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:36:12,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:36:12,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:36:12,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:36:12,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:36:12,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:36:12,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:36:12,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:36:12,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:36:12,198 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 17:36:12,199 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1486914323] [2020-10-28 17:36:12,199 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:36:12,199 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 17:36:12,200 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328261060] [2020-10-28 17:36:12,200 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 17:36:12,200 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:36:12,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 17:36:12,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:36:12,201 INFO L87 Difference]: Start difference. First operand 5107 states and 7276 transitions. Second operand 9 states. [2020-10-28 17:36:12,441 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-28 17:36:15,207 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-28 17:36:15,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:36:15,509 INFO L93 Difference]: Finished difference Result 11739 states and 17037 transitions. [2020-10-28 17:36:15,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 17:36:15,510 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 93 [2020-10-28 17:36:15,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:36:15,557 INFO L225 Difference]: With dead ends: 11739 [2020-10-28 17:36:15,558 INFO L226 Difference]: Without dead ends: 8278 [2020-10-28 17:36:15,570 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2020-10-28 17:36:15,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8278 states. [2020-10-28 17:36:16,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8278 to 7612. [2020-10-28 17:36:16,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7612 states. [2020-10-28 17:36:16,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7612 states to 7612 states and 10920 transitions. [2020-10-28 17:36:16,257 INFO L78 Accepts]: Start accepts. Automaton has 7612 states and 10920 transitions. Word has length 93 [2020-10-28 17:36:16,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:36:16,258 INFO L481 AbstractCegarLoop]: Abstraction has 7612 states and 10920 transitions. [2020-10-28 17:36:16,258 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 17:36:16,258 INFO L276 IsEmpty]: Start isEmpty. Operand 7612 states and 10920 transitions. [2020-10-28 17:36:16,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-28 17:36:16,272 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:36:16,272 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] [2020-10-28 17:36:16,272 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 17:36:16,273 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:36:16,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:36:16,273 INFO L82 PathProgramCache]: Analyzing trace with hash 956102962, now seen corresponding path program 1 times [2020-10-28 17:36:16,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:36:16,274 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1562874264] [2020-10-28 17:36:16,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:36:16,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:36:16,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:36:16,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:36:16,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:36:16,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:36:16,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:36:17,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:36:21,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:36:21,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-28 17:36:21,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 17:36:21,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-28 17:36:21,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:36:21,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:36:21,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:36:21,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 17:36:21,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-28 17:36:21,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:36:21,557 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-28 17:36:21,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:36:21,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:36:21,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:36:21,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:36:21,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:36:21,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:36:21,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 17:36:21,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:36:21,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:36:21,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:36:21,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:36:21,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:36:21,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:36:21,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:36:21,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:36:21,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:36:21,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:36:21,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:36:21,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:36:21,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-28 17:36:21,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 17:36:21,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-28 17:36:21,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:36:21,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:36:21,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:36:21,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-28 17:36:21,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-28 17:36:21,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:36:21,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-28 17:36:21,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:36:21,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:36:21,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:36:21,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:36:21,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:36:21,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:36:21,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:36:21,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:36:21,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:36:21,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:36:21,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:36:21,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:36:21,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-28 17:36:21,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:36:21,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:36:21,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:36:21,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:36:21,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:36:21,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:36:21,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:36:21,779 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:36:21,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:36:21,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:36:21,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:36:21,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:36:21,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-28 17:36:21,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:36:21,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:36:21,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:36:21,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 17:36:21,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:36:21,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:36:21,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:36:21,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:36:21,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:36:21,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-28 17:36:21,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:36:21,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:36:21,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-28 17:36:21,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:36:21,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:36:21,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:36:21,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:36:21,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:36:21,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:36:21,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:36:21,881 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:36:21,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:36:21,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-28 17:36:21,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:36:21,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:36:21,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-28 17:36:21,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:36:21,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:36:21,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:36:21,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:36:21,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:36:21,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:36:21,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:36:21,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:36:21,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:36:21,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:36:21,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:36:21,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:36:21,905 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 17:36:21,905 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1562874264] [2020-10-28 17:36:21,905 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:36:21,906 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-28 17:36:21,906 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423177991] [2020-10-28 17:36:21,906 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 17:36:21,906 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:36:21,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 17:36:21,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-28 17:36:21,907 INFO L87 Difference]: Start difference. First operand 7612 states and 10920 transitions. Second operand 10 states. [2020-10-28 17:36:22,217 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-28 17:36:22,596 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-28 17:36:22,855 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 17:36:23,115 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 17:36:23,440 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-28 17:36:23,704 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-28 17:36:28,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:36:28,607 INFO L93 Difference]: Finished difference Result 19512 states and 28473 transitions. [2020-10-28 17:36:28,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-28 17:36:28,608 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 95 [2020-10-28 17:36:28,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:36:28,681 INFO L225 Difference]: With dead ends: 19512 [2020-10-28 17:36:28,681 INFO L226 Difference]: Without dead ends: 12842 [2020-10-28 17:36:28,707 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=155, Invalid=445, Unknown=0, NotChecked=0, Total=600 [2020-10-28 17:36:28,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12842 states. [2020-10-28 17:36:29,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12842 to 12053. [2020-10-28 17:36:29,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12053 states. [2020-10-28 17:36:29,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12053 states to 12053 states and 17369 transitions. [2020-10-28 17:36:29,892 INFO L78 Accepts]: Start accepts. Automaton has 12053 states and 17369 transitions. Word has length 95 [2020-10-28 17:36:29,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:36:29,893 INFO L481 AbstractCegarLoop]: Abstraction has 12053 states and 17369 transitions. [2020-10-28 17:36:29,893 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 17:36:29,893 INFO L276 IsEmpty]: Start isEmpty. Operand 12053 states and 17369 transitions. [2020-10-28 17:36:29,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-28 17:36:29,909 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:36:29,909 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] [2020-10-28 17:36:29,910 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 17:36:29,910 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:36:29,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:36:29,910 INFO L82 PathProgramCache]: Analyzing trace with hash 1311929000, now seen corresponding path program 1 times [2020-10-28 17:36:29,911 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:36:29,911 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [10613009] [2020-10-28 17:36:29,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:36:29,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:36:29,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:36:30,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:36:30,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:36:30,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:36:30,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:36:31,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:36:35,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:36:35,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-28 17:36:35,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 17:36:35,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5059 [2020-10-28 17:36:35,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:36:35,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:36:35,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:36:35,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 17:36:35,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-28 17:36:35,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:36:35,235 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-28 17:36:35,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:36:35,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:36:35,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:36:35,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:36:35,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:36:35,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:36:35,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:36:35,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:36:35,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:36:35,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:36:35,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:36:35,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:36:35,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:36:35,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:36:35,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:36:35,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:36:35,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:36:35,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-28 17:36:35,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:36:35,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-28 17:36:35,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:36:35,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:36:35,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:36:35,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:36:35,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-28 17:36:35,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:36:35,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-28 17:36:35,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:36:35,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:36:35,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:36:35,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:36:35,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:36:35,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:36:35,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:36:35,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:36:35,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:36:35,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:36:35,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:36:35,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:36:35,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-28 17:36:35,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:36:35,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:36:35,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:36:35,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:36:35,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:36:35,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:36:35,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:36:35,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:36:35,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:36:35,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:36:35,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:36:35,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:36:35,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-28 17:36:35,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:36:35,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:36:35,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:36:35,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:36:35,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:36:35,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:36:35,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:36:35,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:36:35,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:36:35,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 17:36:35,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:36:35,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:36:35,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-28 17:36:35,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:36:35,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:36:35,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:36:35,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 17:36:35,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:36:35,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:36:35,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:36:35,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:36:35,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:36:35,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:36:35,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:36:35,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:36:35,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-28 17:36:35,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:36:35,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:36:35,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:36:35,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:36:35,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:36:35,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:36:35,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:36:35,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:36:35,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:36:35,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:36:35,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:36:35,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:36:35,506 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 17:36:35,506 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [10613009] [2020-10-28 17:36:35,506 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:36:35,507 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 17:36:35,507 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468990629] [2020-10-28 17:36:35,507 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 17:36:35,507 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:36:35,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 17:36:35,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:36:35,508 INFO L87 Difference]: Start difference. First operand 12053 states and 17369 transitions. Second operand 9 states. [2020-10-28 17:36:35,759 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-28 17:36:35,987 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-28 17:36:36,228 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-28 17:36:36,462 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 17:36:37,231 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 17:36:40,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:36:40,521 INFO L93 Difference]: Finished difference Result 30710 states and 44573 transitions. [2020-10-28 17:36:40,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-28 17:36:40,522 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 96 [2020-10-28 17:36:40,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:36:40,611 INFO L225 Difference]: With dead ends: 30710 [2020-10-28 17:36:40,611 INFO L226 Difference]: Without dead ends: 18658 [2020-10-28 17:36:40,653 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2020-10-28 17:36:40,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18658 states. [2020-10-28 17:36:42,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18658 to 18288. [2020-10-28 17:36:42,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18288 states. [2020-10-28 17:36:42,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18288 states to 18288 states and 25837 transitions. [2020-10-28 17:36:42,535 INFO L78 Accepts]: Start accepts. Automaton has 18288 states and 25837 transitions. Word has length 96 [2020-10-28 17:36:42,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:36:42,535 INFO L481 AbstractCegarLoop]: Abstraction has 18288 states and 25837 transitions. [2020-10-28 17:36:42,535 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 17:36:42,535 INFO L276 IsEmpty]: Start isEmpty. Operand 18288 states and 25837 transitions. [2020-10-28 17:36:42,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-28 17:36:42,558 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:36:42,559 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] [2020-10-28 17:36:42,559 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 17:36:42,559 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:36:42,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:36:42,560 INFO L82 PathProgramCache]: Analyzing trace with hash 453411862, now seen corresponding path program 1 times [2020-10-28 17:36:42,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:36:42,561 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1875742396] [2020-10-28 17:36:42,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:36:42,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:36:42,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:36:42,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:36:42,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:36:42,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:36:42,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:36:43,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:36:47,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:36:47,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-28 17:36:47,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 17:36:47,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 17:36:47,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:36:47,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:36:47,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:36:47,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 17:36:47,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-28 17:36:47,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:36:47,837 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-28 17:36:47,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:36:47,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:36:47,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:36:47,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:36:47,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:36:47,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:36:47,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:36:47,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:36:47,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:36:47,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:36:47,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:36:47,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:36:47,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:36:47,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:36:47,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:36:47,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:36:47,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:36:47,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:36:47,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-28 17:36:47,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:36:47,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-28 17:36:47,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:36:47,965 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:36:47,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:36:47,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:36:47,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:36:47,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:36:47,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-28 17:36:47,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:36:47,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:36:47,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:36:47,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:36:47,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:36:47,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:36:47,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:36:47,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:36:47,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:36:47,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:36:47,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:36:47,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:36:48,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-28 17:36:48,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:36:48,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:36:48,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:36:48,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:36:48,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:36:48,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:36:48,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:36:48,029 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:36:48,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:36:48,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:36:48,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:36:48,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:36:48,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-28 17:36:48,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:36:48,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:36:48,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:36:48,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 17:36:48,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:36:48,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:36:48,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:36:48,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:36:48,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:36:48,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-28 17:36:48,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:36:48,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:36:48,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-28 17:36:48,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:36:48,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:36:48,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:36:48,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:36:48,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:36:48,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:36:48,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:36:48,130 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:36:48,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:36:48,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-28 17:36:48,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:36:48,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:36:48,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-28 17:36:48,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:36:48,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:36:48,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:36:48,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:36:48,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:36:48,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:36:48,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:36:48,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:36:48,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:36:48,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:36:48,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:36:48,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:36:48,165 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 17:36:48,165 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1875742396] [2020-10-28 17:36:48,165 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:36:48,166 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 17:36:48,166 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478281] [2020-10-28 17:36:48,166 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 17:36:48,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:36:48,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 17:36:48,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:36:48,168 INFO L87 Difference]: Start difference. First operand 18288 states and 25837 transitions. Second operand 9 states. [2020-10-28 17:36:48,451 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-28 17:36:48,695 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-28 17:36:48,989 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-28 17:36:49,233 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 17:36:49,892 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 17:36:53,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:36:53,033 INFO L93 Difference]: Finished difference Result 31182 states and 44187 transitions. [2020-10-28 17:36:53,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-28 17:36:53,034 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 96 [2020-10-28 17:36:53,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:36:53,100 INFO L225 Difference]: With dead ends: 31182 [2020-10-28 17:36:53,100 INFO L226 Difference]: Without dead ends: 17313 [2020-10-28 17:36:53,138 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2020-10-28 17:36:53,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17313 states. [2020-10-28 17:36:54,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17313 to 16783. [2020-10-28 17:36:54,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16783 states. [2020-10-28 17:36:54,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16783 states to 16783 states and 23638 transitions. [2020-10-28 17:36:54,703 INFO L78 Accepts]: Start accepts. Automaton has 16783 states and 23638 transitions. Word has length 96 [2020-10-28 17:36:54,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:36:54,703 INFO L481 AbstractCegarLoop]: Abstraction has 16783 states and 23638 transitions. [2020-10-28 17:36:54,703 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 17:36:54,704 INFO L276 IsEmpty]: Start isEmpty. Operand 16783 states and 23638 transitions. [2020-10-28 17:36:54,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-28 17:36:54,724 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:36:54,724 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] [2020-10-28 17:36:54,724 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 17:36:54,724 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:36:54,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:36:54,725 INFO L82 PathProgramCache]: Analyzing trace with hash 1513566587, now seen corresponding path program 1 times [2020-10-28 17:36:54,725 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:36:54,725 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [333125605] [2020-10-28 17:36:54,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:36:54,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:36:54,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:36:54,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:36:54,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:36:54,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:36:55,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:36:57,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:36:59,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:36:59,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-28 17:36:59,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 17:36:59,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 17:36:59,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:36:59,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:36:59,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:36:59,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-28 17:36:59,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-28 17:36:59,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:37:00,006 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-28 17:37:00,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:37:00,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:37:00,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:37:00,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:37:00,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:37:00,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:37:00,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:37:00,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:37:00,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:37:00,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:37:00,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:37:00,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:37:00,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:37:00,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:37:00,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:37:00,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:37:00,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:37:00,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-28 17:37:00,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:37:00,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 17:37:00,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:37:00,055 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:37:00,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:37:00,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:37:00,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-28 17:37:00,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:37:00,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-28 17:37:00,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:37:00,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:37:00,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:37:00,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:37:00,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:37:00,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:37:00,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:37:00,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:37:00,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:37:00,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:37:00,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:37:00,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:37:00,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-28 17:37:00,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:37:00,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:37:00,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:37:00,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:37:00,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:37:00,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:37:00,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:37:00,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:37:00,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:37:00,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:37:00,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:37:00,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:37:00,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-28 17:37:00,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:37:00,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:37:00,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:37:00,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 17:37:00,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:37:00,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:37:00,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:37:00,183 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:37:00,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:37:00,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:37:00,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:37:00,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:37:00,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-28 17:37:00,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:37:00,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:37:00,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:37:00,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 17:37:00,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:37:00,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:37:00,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:37:00,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:37:00,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:37:00,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:37:00,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:37:00,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:37:00,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-28 17:37:00,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:37:00,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:37:00,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:37:00,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:37:00,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:37:00,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:37:00,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:37:00,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:37:00,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:37:00,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:37:00,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:37:00,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:37:00,257 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 17:37:00,257 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [333125605] [2020-10-28 17:37:00,257 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:37:00,258 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 17:37:00,258 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775174342] [2020-10-28 17:37:00,258 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 17:37:00,258 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:37:00,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 17:37:00,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:37:00,259 INFO L87 Difference]: Start difference. First operand 16783 states and 23638 transitions. Second operand 9 states. [2020-10-28 17:37:00,519 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-28 17:37:02,807 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-28 17:37:04,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:37:04,507 INFO L93 Difference]: Finished difference Result 38758 states and 55100 transitions. [2020-10-28 17:37:04,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 17:37:04,508 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 97 [2020-10-28 17:37:04,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:37:04,596 INFO L225 Difference]: With dead ends: 38758 [2020-10-28 17:37:04,596 INFO L226 Difference]: Without dead ends: 23983 [2020-10-28 17:37:04,625 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2020-10-28 17:37:04,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23983 states. [2020-10-28 17:37:06,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23983 to 23142. [2020-10-28 17:37:06,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23142 states. [2020-10-28 17:37:06,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23142 states to 23142 states and 31158 transitions. [2020-10-28 17:37:06,509 INFO L78 Accepts]: Start accepts. Automaton has 23142 states and 31158 transitions. Word has length 97 [2020-10-28 17:37:06,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:37:06,509 INFO L481 AbstractCegarLoop]: Abstraction has 23142 states and 31158 transitions. [2020-10-28 17:37:06,509 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 17:37:06,510 INFO L276 IsEmpty]: Start isEmpty. Operand 23142 states and 31158 transitions. [2020-10-28 17:37:06,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-28 17:37:06,529 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:37:06,529 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] [2020-10-28 17:37:06,530 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 17:37:06,530 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:37:06,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:37:06,530 INFO L82 PathProgramCache]: Analyzing trace with hash -1748219743, now seen corresponding path program 1 times [2020-10-28 17:37:06,531 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:37:06,531 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1399980709] [2020-10-28 17:37:06,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:37:06,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:37:06,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:37:06,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:37:06,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:37:06,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:37:06,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:37:07,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:37:08,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:37:11,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:37:11,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-28 17:37:11,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 17:37:11,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-28 17:37:11,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:37:11,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:37:11,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:37:11,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-28 17:37:11,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-28 17:37:11,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:37:11,817 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-28 17:37:11,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:37:11,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:37:11,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:37:11,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:37:11,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:37:11,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:37:11,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:37:11,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:37:11,831 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:37:11,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:37:11,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:37:11,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:37:11,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:37:11,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:37:11,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:37:11,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:37:11,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:37:11,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:37:11,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:37:11,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-28 17:37:11,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 17:37:11,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-10-28 17:37:11,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:37:11,999 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:37:11,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:37:11,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:37:11,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-28 17:37:12,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:37:12,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-28 17:37:12,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:37:12,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:37:12,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:37:12,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:37:12,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:37:12,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:37:12,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:37:12,009 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:37:12,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:37:12,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:37:12,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:37:12,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:37:12,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-28 17:37:12,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:37:12,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:37:12,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:37:12,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 17:37:12,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:37:12,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:37:12,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:37:12,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:37:12,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:37:12,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:37:12,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 17:37:12,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:37:12,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-28 17:37:12,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:37:12,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:37:12,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:37:12,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:37:12,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:37:12,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:37:12,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:37:12,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:37:12,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:37:12,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:37:12,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:37:12,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:37:12,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-28 17:37:12,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:37:12,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:37:12,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:37:12,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:37:12,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:37:12,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 17:37:12,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:37:12,138 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:37:12,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:37:12,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:37:12,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 17:37:12,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:37:12,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-28 17:37:12,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:37:12,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:37:12,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:37:12,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:37:12,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:37:12,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:37:12,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:37:12,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:37:12,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:37:12,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:37:12,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:37:12,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:37:12,177 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 17:37:12,177 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1399980709] [2020-10-28 17:37:12,178 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:37:12,178 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-28 17:37:12,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936484816] [2020-10-28 17:37:12,178 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 17:37:12,178 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:37:12,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 17:37:12,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-28 17:37:12,179 INFO L87 Difference]: Start difference. First operand 23142 states and 31158 transitions. Second operand 8 states. [2020-10-28 17:37:12,451 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-28 17:37:16,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:37:16,613 INFO L93 Difference]: Finished difference Result 40636 states and 55249 transitions. [2020-10-28 17:37:16,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 17:37:16,614 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 99 [2020-10-28 17:37:16,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:37:16,704 INFO L225 Difference]: With dead ends: 40636 [2020-10-28 17:37:16,704 INFO L226 Difference]: Without dead ends: 29348 [2020-10-28 17:37:16,725 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2020-10-28 17:37:16,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29348 states. [2020-10-28 17:37:19,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29348 to 28918. [2020-10-28 17:37:19,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28918 states. [2020-10-28 17:37:19,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28918 states to 28918 states and 38915 transitions. [2020-10-28 17:37:19,140 INFO L78 Accepts]: Start accepts. Automaton has 28918 states and 38915 transitions. Word has length 99 [2020-10-28 17:37:19,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:37:19,141 INFO L481 AbstractCegarLoop]: Abstraction has 28918 states and 38915 transitions. [2020-10-28 17:37:19,141 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 17:37:19,141 INFO L276 IsEmpty]: Start isEmpty. Operand 28918 states and 38915 transitions. [2020-10-28 17:37:19,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-28 17:37:19,151 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:37:19,151 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] [2020-10-28 17:37:19,151 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 17:37:19,151 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:37:19,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:37:19,152 INFO L82 PathProgramCache]: Analyzing trace with hash -1190927088, now seen corresponding path program 1 times [2020-10-28 17:37:19,152 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:37:19,152 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1216486941] [2020-10-28 17:37:19,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:37:19,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:37:19,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:37:19,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:37:19,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:37:19,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:37:19,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:37:19,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:37:19,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:37:22,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:37:23,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:37:23,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:37:24,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:37:24,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-28 17:37:24,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-28 17:37:24,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-28 17:37:24,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:37:24,179 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:37:24,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:37:24,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 17:37:24,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-28 17:37:24,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:37:24,431 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-28 17:37:24,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:37:24,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:37:24,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:37:24,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:37:24,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:37:24,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:37:24,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 17:37:24,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:37:24,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:37:24,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:37:24,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:37:24,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:37:24,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:37:24,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:37:24,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:37:24,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:37:24,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:37:24,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:37:24,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:37:24,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-28 17:37:24,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 17:37:24,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-28 17:37:24,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:37:24,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:37:24,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:37:24,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 17:37:24,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 17:37:24,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:37:24,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-28 17:37:24,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:37:24,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:37:24,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:37:24,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:37:24,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:37:24,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:37:24,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:37:24,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:37:24,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:37:24,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:37:24,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:37:24,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:37:24,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-28 17:37:24,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:37:24,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:37:24,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:37:24,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:37:24,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:37:24,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:37:24,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:37:24,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:37:24,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:37:24,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:37:24,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:37:24,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:37:24,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-28 17:37:24,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:37:24,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:37:24,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:37:24,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:37:24,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 17:37:24,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:37:24,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 17:37:24,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:37:24,718 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:37:24,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:37:24,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:37:24,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:37:24,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:37:24,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-28 17:37:24,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:37:24,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:37:24,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:37:24,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 17:37:24,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:37:24,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 17:37:24,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:37:24,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:37:24,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:37:24,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 17:37:24,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:37:24,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:37:24,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-28 17:37:24,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:37:24,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:37:24,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:37:24,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:37:24,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:37:24,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:37:24,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:37:24,799 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:37:24,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:37:24,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:37:24,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:37:24,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:37:24,823 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 17:37:24,823 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1216486941] [2020-10-28 17:37:24,824 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:37:24,824 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-28 17:37:24,824 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173507999] [2020-10-28 17:37:24,824 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 17:37:24,825 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:37:24,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 17:37:24,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-28 17:37:24,825 INFO L87 Difference]: Start difference. First operand 28918 states and 38915 transitions. Second operand 10 states. [2020-10-28 17:37:25,097 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-28 17:37:25,416 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-28 17:37:25,849 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-28 17:37:26,137 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-28 17:37:26,443 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-28 17:37:26,812 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-28 17:37:31,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:37:31,393 INFO L93 Difference]: Finished difference Result 35196 states and 47184 transitions. [2020-10-28 17:37:31,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-28 17:37:31,394 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 101 [2020-10-28 17:37:31,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:37:31,475 INFO L225 Difference]: With dead ends: 35196 [2020-10-28 17:37:31,476 INFO L226 Difference]: Without dead ends: 23752 [2020-10-28 17:37:31,499 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=154, Invalid=446, Unknown=0, NotChecked=0, Total=600 [2020-10-28 17:37:31,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23752 states. [2020-10-28 17:37:33,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23752 to 23025. [2020-10-28 17:37:33,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23025 states. [2020-10-28 17:37:33,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23025 states to 23025 states and 31052 transitions. [2020-10-28 17:37:33,496 INFO L78 Accepts]: Start accepts. Automaton has 23025 states and 31052 transitions. Word has length 101 [2020-10-28 17:37:33,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:37:33,496 INFO L481 AbstractCegarLoop]: Abstraction has 23025 states and 31052 transitions. [2020-10-28 17:37:33,496 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 17:37:33,496 INFO L276 IsEmpty]: Start isEmpty. Operand 23025 states and 31052 transitions. [2020-10-28 17:37:33,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-28 17:37:33,503 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:37:33,503 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] [2020-10-28 17:37:33,504 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 17:37:33,504 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:37:33,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:37:33,504 INFO L82 PathProgramCache]: Analyzing trace with hash 1258184992, now seen corresponding path program 1 times [2020-10-28 17:37:33,504 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:37:33,505 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1511859109] [2020-10-28 17:37:33,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:37:33,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:37:33,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:37:33,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:37:33,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:37:33,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:37:33,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:37:33,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:37:38,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:37:38,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-28 17:37:38,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 17:37:38,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 17:37:38,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:37:38,542 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:37:38,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:37:38,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-28 17:37:38,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-28 17:37:38,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:37:38,768 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-28 17:37:38,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:37:38,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:37:38,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:37:38,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:37:38,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:37:38,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:37:38,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:37:38,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:37:38,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:37:38,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:37:38,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:37:38,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:37:38,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:37:38,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:37:38,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:37:38,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:37:38,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:37:38,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-28 17:37:38,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:37:38,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 17:37:38,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:37:38,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:37:38,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:37:38,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:37:38,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-28 17:37:38,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:37:38,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-28 17:37:38,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:37:38,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:37:38,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:37:38,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:37:38,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:37:38,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:37:38,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:37:38,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:37:38,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:37:38,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:37:38,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:37:38,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:37:38,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-28 17:37:38,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:37:38,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:37:38,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:37:38,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:37:38,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:37:38,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:37:38,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:37:38,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:37:38,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:37:38,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:37:38,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:37:38,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:37:38,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-28 17:37:38,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:37:38,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:37:38,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:37:38,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 17:37:38,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:37:38,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 17:37:38,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:37:38,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:37:38,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:37:38,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:37:38,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 17:37:38,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:37:38,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-28 17:37:38,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:37:38,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:37:38,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:37:38,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 17:37:38,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:37:38,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:37:38,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:37:38,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:37:38,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:37:38,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:37:38,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:37:38,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:37:38,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-28 17:37:38,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:37:38,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:37:38,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:37:38,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:37:38,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:37:38,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:37:38,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:37:38,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:37:38,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:37:38,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:37:38,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:37:38,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:37:39,001 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 17:37:39,001 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1511859109] [2020-10-28 17:37:39,001 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:37:39,002 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-28 17:37:39,002 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700230700] [2020-10-28 17:37:39,002 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 17:37:39,002 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:37:39,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 17:37:39,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-28 17:37:39,003 INFO L87 Difference]: Start difference. First operand 23025 states and 31052 transitions. Second operand 8 states. [2020-10-28 17:37:39,359 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-28 17:37:43,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:37:43,541 INFO L93 Difference]: Finished difference Result 40101 states and 54608 transitions. [2020-10-28 17:37:43,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 17:37:43,542 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 102 [2020-10-28 17:37:43,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:37:43,628 INFO L225 Difference]: With dead ends: 40101 [2020-10-28 17:37:43,628 INFO L226 Difference]: Without dead ends: 27596 [2020-10-28 17:37:43,651 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2020-10-28 17:37:43,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27596 states. [2020-10-28 17:37:45,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27596 to 27210. [2020-10-28 17:37:45,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27210 states. [2020-10-28 17:37:45,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27210 states to 27210 states and 36782 transitions. [2020-10-28 17:37:45,910 INFO L78 Accepts]: Start accepts. Automaton has 27210 states and 36782 transitions. Word has length 102 [2020-10-28 17:37:45,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:37:45,910 INFO L481 AbstractCegarLoop]: Abstraction has 27210 states and 36782 transitions. [2020-10-28 17:37:45,910 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 17:37:45,910 INFO L276 IsEmpty]: Start isEmpty. Operand 27210 states and 36782 transitions. [2020-10-28 17:37:45,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-28 17:37:45,918 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:37:45,918 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] [2020-10-28 17:37:45,918 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 17:37:45,918 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:37:45,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:37:45,918 INFO L82 PathProgramCache]: Analyzing trace with hash -951565998, now seen corresponding path program 1 times [2020-10-28 17:37:45,919 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:37:45,919 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [904697218] [2020-10-28 17:37:45,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:37:45,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:37:45,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:37:46,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:37:46,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:37:46,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:37:46,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:37:50,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:37:50,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-28 17:37:50,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:37:50,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-28 17:37:50,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:37:50,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:37:50,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 17:37:50,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-10-28 17:37:50,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 17:37:50,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:37:51,214 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-28 17:37:51,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:37:51,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:37:51,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:37:51,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:37:51,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:37:51,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:37:51,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:37:51,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:37:51,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:37:51,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:37:51,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:37:51,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:37:51,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:37:51,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:37:51,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:37:51,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:37:51,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:37:51,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-28 17:37:51,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:37:51,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:37:51,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:37:51,244 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:37:51,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:37:51,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:37:51,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:37:51,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:37:51,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-28 17:37:51,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:37:51,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:37:51,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:37:51,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:37:51,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:37:51,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:37:51,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:37:51,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:37:51,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:37:51,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:37:51,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:37:51,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:37:51,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-28 17:37:51,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:37:51,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:37:51,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:37:51,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:37:51,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:37:51,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:37:51,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:37:51,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:37:51,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:37:51,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:37:51,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:37:51,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:37:51,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-28 17:37:51,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:37:51,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:37:51,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:37:51,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 17:37:51,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:37:51,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 17:37:51,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:37:51,364 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:37:51,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 17:37:51,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:37:51,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 17:37:51,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:37:51,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-28 17:37:51,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:37:51,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:37:51,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:37:51,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 17:37:51,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:37:51,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:37:51,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:37:51,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:37:51,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:37:51,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:37:51,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:37:51,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:37:51,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-28 17:37:51,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:37:51,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:37:51,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:37:51,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:37:51,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:37:51,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:37:51,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:37:51,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:37:51,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:37:51,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:37:51,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:37:51,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:37:51,469 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 17:37:51,469 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [904697218] [2020-10-28 17:37:51,469 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:37:51,469 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-28 17:37:51,470 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618850788] [2020-10-28 17:37:51,470 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 17:37:51,470 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:37:51,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 17:37:51,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-28 17:37:51,471 INFO L87 Difference]: Start difference. First operand 27210 states and 36782 transitions. Second operand 10 states. [2020-10-28 17:37:52,107 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-28 17:37:52,990 WARN L193 SmtUtils]: Spent 568.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 177 [2020-10-28 17:37:56,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:37:56,519 INFO L93 Difference]: Finished difference Result 44824 states and 61724 transitions. [2020-10-28 17:37:56,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-28 17:37:56,519 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 104 [2020-10-28 17:37:56,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:37:56,642 INFO L225 Difference]: With dead ends: 44824 [2020-10-28 17:37:56,643 INFO L226 Difference]: Without dead ends: 31875 [2020-10-28 17:37:56,669 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=102, Invalid=278, Unknown=0, NotChecked=0, Total=380 [2020-10-28 17:37:56,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31875 states. [2020-10-28 17:37:59,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31875 to 27660. [2020-10-28 17:37:59,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27660 states. [2020-10-28 17:37:59,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27660 states to 27660 states and 37232 transitions. [2020-10-28 17:37:59,301 INFO L78 Accepts]: Start accepts. Automaton has 27660 states and 37232 transitions. Word has length 104 [2020-10-28 17:37:59,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:37:59,301 INFO L481 AbstractCegarLoop]: Abstraction has 27660 states and 37232 transitions. [2020-10-28 17:37:59,301 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 17:37:59,302 INFO L276 IsEmpty]: Start isEmpty. Operand 27660 states and 37232 transitions. [2020-10-28 17:37:59,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-28 17:37:59,312 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:37:59,312 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] [2020-10-28 17:37:59,312 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 17:37:59,312 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:37:59,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:37:59,313 INFO L82 PathProgramCache]: Analyzing trace with hash -1461039088, now seen corresponding path program 1 times [2020-10-28 17:37:59,313 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:37:59,313 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [812659875] [2020-10-28 17:37:59,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:37:59,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:37:59,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:37:59,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:37:59,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:37:59,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:38:00,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:38:04,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:38:04,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-28 17:38:04,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:38:04,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 17:38:04,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:38:04,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:38:04,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:38:04,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-28 17:38:04,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-28 17:38:04,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:38:04,601 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-28 17:38:04,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:38:04,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:38:04,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:38:04,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:38:04,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:38:04,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:38:04,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:38:04,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:38:04,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:38:04,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:38:04,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:38:04,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:38:04,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:38:04,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:38:04,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:38:04,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:38:04,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:38:04,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-28 17:38:04,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:38:04,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 17:38:04,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:38:04,646 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:38:04,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:38:04,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:38:04,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-28 17:38:04,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:38:04,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-28 17:38:04,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:38:04,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:38:04,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:38:04,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:38:04,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:38:04,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:38:04,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:38:04,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:38:04,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:38:04,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:38:04,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:38:04,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:38:04,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-28 17:38:04,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:38:04,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:38:04,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:38:04,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:38:04,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:38:04,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 17:38:04,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:38:04,707 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:38:04,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:38:04,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:38:04,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 17:38:04,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:38:04,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-28 17:38:04,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:38:04,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:38:04,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:38:04,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 17:38:04,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:38:04,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:38:04,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:38:04,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:38:04,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:38:04,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 17:38:04,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:38:04,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:38:04,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-28 17:38:04,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:38:04,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:38:04,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:38:04,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 17:38:04,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:38:04,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:38:04,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:38:04,815 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:38:04,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:38:04,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:38:04,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:38:04,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:38:04,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-28 17:38:04,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:38:04,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:38:04,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:38:04,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:38:04,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:38:04,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:38:04,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:38:04,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:38:04,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:38:04,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:38:04,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:38:04,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:38:04,836 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 17:38:04,836 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [812659875] [2020-10-28 17:38:04,836 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:38:04,836 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-28 17:38:04,836 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524234929] [2020-10-28 17:38:04,837 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 17:38:04,837 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:38:04,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 17:38:04,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-28 17:38:04,838 INFO L87 Difference]: Start difference. First operand 27660 states and 37232 transitions. Second operand 8 states. [2020-10-28 17:38:05,122 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-28 17:38:10,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:38:10,226 INFO L93 Difference]: Finished difference Result 51342 states and 70557 transitions. [2020-10-28 17:38:10,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 17:38:10,226 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 104 [2020-10-28 17:38:10,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:38:10,354 INFO L225 Difference]: With dead ends: 51342 [2020-10-28 17:38:10,355 INFO L226 Difference]: Without dead ends: 35925 [2020-10-28 17:38:10,388 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2020-10-28 17:38:10,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35925 states. [2020-10-28 17:38:13,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35925 to 35277. [2020-10-28 17:38:13,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35277 states. [2020-10-28 17:38:13,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35277 states to 35277 states and 47997 transitions. [2020-10-28 17:38:13,823 INFO L78 Accepts]: Start accepts. Automaton has 35277 states and 47997 transitions. Word has length 104 [2020-10-28 17:38:13,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:38:13,824 INFO L481 AbstractCegarLoop]: Abstraction has 35277 states and 47997 transitions. [2020-10-28 17:38:13,824 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 17:38:13,824 INFO L276 IsEmpty]: Start isEmpty. Operand 35277 states and 47997 transitions. [2020-10-28 17:38:13,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-28 17:38:13,828 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:38:13,828 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] [2020-10-28 17:38:13,828 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-28 17:38:13,828 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:38:13,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:38:13,829 INFO L82 PathProgramCache]: Analyzing trace with hash -325707912, now seen corresponding path program 1 times [2020-10-28 17:38:13,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:38:13,829 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1712193575] [2020-10-28 17:38:13,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:38:13,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:38:13,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:38:13,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:38:13,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:38:13,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:38:14,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking...