/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_lcr.3_overflow.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 17:41:55,392 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 17:41:55,397 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 17:41:55,450 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 17:41:55,451 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 17:41:55,460 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 17:41:55,462 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 17:41:55,467 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 17:41:55,470 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 17:41:55,471 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 17:41:55,473 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 17:41:55,474 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 17:41:55,474 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 17:41:55,476 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 17:41:55,477 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 17:41:55,478 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 17:41:55,479 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 17:41:55,480 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 17:41:55,483 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 17:41:55,485 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 17:41:55,487 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 17:41:55,488 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 17:41:55,490 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 17:41:55,491 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 17:41:55,494 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 17:41:55,495 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 17:41:55,495 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 17:41:55,496 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 17:41:55,497 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 17:41:55,498 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 17:41:55,498 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 17:41:55,499 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 17:41:55,500 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 17:41:55,501 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 17:41:55,502 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 17:41:55,503 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 17:41:55,503 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 17:41:55,504 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 17:41:55,504 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 17:41:55,505 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 17:41:55,506 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 17:41:55,507 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 17:41:55,536 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 17:41:55,537 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 17:41:55,538 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 17:41:55,539 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 17:41:55,539 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 17:41:55,539 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 17:41:55,539 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 17:41:55,540 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 17:41:55,540 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 17:41:55,540 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 17:41:55,540 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 17:41:55,540 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 17:41:55,541 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 17:41:55,541 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 17:41:55,541 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 17:41:55,541 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 17:41:55,542 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 17:41:55,542 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 17:41:55,542 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 17:41:55,542 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 17:41:55,543 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 17:41:55,543 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 17:41:55,543 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 17:41:55,543 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 17:41:55,543 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 17:41:55,544 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 17:41:55,544 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 17:41:55,544 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 17:41:55,544 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 17:41:55,544 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 17:41:55,940 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 17:41:55,997 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 17:41:56,001 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 17:41:56,003 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 17:41:56,004 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 17:41:56,007 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr.3_overflow.ufo.UNBOUNDED.pals.c [2020-10-28 17:41:56,103 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/08b29628c/4d9bbd5156b54700b17f3d88fb7ad398/FLAGb8d76a80d [2020-10-28 17:41:56,853 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 17:41:56,854 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded/pals_lcr.3_overflow.ufo.UNBOUNDED.pals.c [2020-10-28 17:41:56,865 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/08b29628c/4d9bbd5156b54700b17f3d88fb7ad398/FLAGb8d76a80d [2020-10-28 17:41:57,187 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/08b29628c/4d9bbd5156b54700b17f3d88fb7ad398 [2020-10-28 17:41:57,194 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 17:41:57,206 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 17:41:57,209 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 17:41:57,209 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 17:41:57,213 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 17:41:57,214 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 05:41:57" (1/1) ... [2020-10-28 17:41:57,219 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bfac43b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:41:57, skipping insertion in model container [2020-10-28 17:41:57,220 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 05:41:57" (1/1) ... [2020-10-28 17:41:57,230 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 17:41:57,288 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 17:41:57,513 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 17:41:57,531 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 17:41:57,574 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 17:41:57,596 INFO L208 MainTranslator]: Completed translation [2020-10-28 17:41:57,596 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:41:57 WrapperNode [2020-10-28 17:41:57,597 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 17:41:57,598 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 17:41:57,598 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 17:41:57,598 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 17:41:57,613 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:41:57" (1/1) ... [2020-10-28 17:41:57,614 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:41:57" (1/1) ... [2020-10-28 17:41:57,625 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:41:57" (1/1) ... [2020-10-28 17:41:57,625 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:41:57" (1/1) ... [2020-10-28 17:41:57,637 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:41:57" (1/1) ... [2020-10-28 17:41:57,646 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:41:57" (1/1) ... [2020-10-28 17:41:57,649 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:41:57" (1/1) ... [2020-10-28 17:41:57,654 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 17:41:57,655 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 17:41:57,655 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 17:41:57,655 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 17:41:57,656 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:41:57" (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 17:41:57,746 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 17:41:57,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 17:41:57,747 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 17:41:57,747 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 17:41:57,747 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2020-10-28 17:41:57,747 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2020-10-28 17:41:57,748 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2020-10-28 17:41:57,748 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-10-28 17:41:57,748 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-28 17:41:57,748 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 17:41:57,748 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2020-10-28 17:41:57,748 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 17:41:57,749 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 17:41:57,749 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 17:41:57,749 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 17:41:57,749 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-28 17:41:57,749 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-28 17:41:57,749 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-28 17:41:57,750 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-28 17:41:57,750 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 17:41:57,750 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-28 17:41:57,750 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-28 17:41:57,750 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-28 17:41:57,750 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-28 17:41:57,750 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-28 17:41:57,751 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-28 17:41:57,751 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-28 17:41:57,751 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 17:41:57,751 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 17:41:57,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 17:41:57,751 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 17:41:57,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 17:41:57,752 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 17:41:57,752 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 17:41:58,635 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 17:41:58,635 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 17:41:58,638 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 05:41:58 BoogieIcfgContainer [2020-10-28 17:41:58,639 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 17:41:58,643 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 17:41:58,643 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 17:41:58,647 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 17:41:58,648 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 05:41:57" (1/3) ... [2020-10-28 17:41:58,649 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f391ed9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 05:41:58, skipping insertion in model container [2020-10-28 17:41:58,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:41:57" (2/3) ... [2020-10-28 17:41:58,650 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f391ed9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 05:41:58, skipping insertion in model container [2020-10-28 17:41:58,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 05:41:58" (3/3) ... [2020-10-28 17:41:58,652 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.3_overflow.ufo.UNBOUNDED.pals.c [2020-10-28 17:41:58,664 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 17:41:58,670 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 17:41:58,685 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 17:41:58,715 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 17:41:58,715 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 17:41:58,716 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 17:41:58,716 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 17:41:58,716 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 17:41:58,716 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 17:41:58,716 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 17:41:58,716 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 17:41:58,738 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states. [2020-10-28 17:41:58,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-28 17:41:58,747 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:41:58,749 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] [2020-10-28 17:41:58,749 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:41:58,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:41:58,756 INFO L82 PathProgramCache]: Analyzing trace with hash 192143731, now seen corresponding path program 1 times [2020-10-28 17:41:58,765 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:41:58,765 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [579752218] [2020-10-28 17:41:58,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:41:58,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:41:59,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:41:59,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:41:59,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 17:41:59,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:41:59,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 397 [2020-10-28 17:41:59,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:41:59,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:41:59,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:41:59,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-28 17:41:59,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:41:59,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-28 17:41:59,563 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-28 17:41:59,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:41:59,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:41:59,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:41:59,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:41:59,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:41:59,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:41:59,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 17:41:59,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:41:59,594 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:41:59,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:41:59,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:41:59,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:41:59,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:41:59,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:41:59,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:41:59,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:41:59,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:41:59,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:41:59,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:41:59,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:41:59,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:41:59,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:41:59,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:41:59,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:41:59,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:41:59,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:41:59,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 17:41:59,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:41:59,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:41:59,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:41:59,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:41:59,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:41:59,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:41:59,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:41:59,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:41:59,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:41:59,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 17:41:59,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:41:59,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:41:59,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-28 17:41:59,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:41:59,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:41:59,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:41:59,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:41:59,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:41:59,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 17:41:59,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:41:59,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:41:59,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:41:59,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 17:41:59,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:41:59,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:41:59,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-28 17:41:59,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:41:59,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:41:59,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:41:59,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:41:59,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:41:59,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 17:41:59,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:41:59,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:41:59,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:41:59,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 17:41:59,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:41:59,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:41:59,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-28 17:41:59,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:41:59,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:41:59,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:41:59,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:41:59,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:41:59,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 17:41:59,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:41:59,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:41:59,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:41:59,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 17:41:59,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:41:59,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:41:59,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-28 17:41:59,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:41:59,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:41:59,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:41:59,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:41:59,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:41:59,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:41:59,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:41:59,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:41:59,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:41:59,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:41:59,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:41:59,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:41:59,805 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 17:41:59,805 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [579752218] [2020-10-28 17:41:59,808 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:41:59,808 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 17:41:59,809 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987496823] [2020-10-28 17:41:59,816 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 17:41:59,816 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:41:59,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 17:41:59,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 17:41:59,835 INFO L87 Difference]: Start difference. First operand 96 states. Second operand 6 states. [2020-10-28 17:42:00,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:42:00,476 INFO L93 Difference]: Finished difference Result 153 states and 217 transitions. [2020-10-28 17:42:00,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 17:42:00,478 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 54 [2020-10-28 17:42:00,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:42:00,488 INFO L225 Difference]: With dead ends: 153 [2020-10-28 17:42:00,489 INFO L226 Difference]: Without dead ends: 88 [2020-10-28 17:42:00,493 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:42:00,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-10-28 17:42:00,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2020-10-28 17:42:00,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-28 17:42:00,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 124 transitions. [2020-10-28 17:42:00,549 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 124 transitions. Word has length 54 [2020-10-28 17:42:00,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:42:00,550 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 124 transitions. [2020-10-28 17:42:00,550 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 17:42:00,550 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 124 transitions. [2020-10-28 17:42:00,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-28 17:42:00,553 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:42:00,553 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] [2020-10-28 17:42:00,554 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 17:42:00,554 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:42:00,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:42:00,555 INFO L82 PathProgramCache]: Analyzing trace with hash -1653223435, now seen corresponding path program 1 times [2020-10-28 17:42:00,555 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:42:00,555 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1824197689] [2020-10-28 17:42:00,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:42:00,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:00,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:01,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:01,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 17:42:01,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:01,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 677 [2020-10-28 17:42:01,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:01,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:01,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 17:42:01,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-28 17:42:01,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:42:01,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:42:01,433 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-28 17:42:01,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:42:01,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:01,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:01,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:01,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:42:01,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:01,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 17:42:01,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:01,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:01,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:42:01,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:42:01,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:42:01,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:42:01,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:42:01,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:01,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:01,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:01,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:42:01,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:01,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 17:42:01,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:01,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:01,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:42:01,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:42:01,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:42:01,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:42:01,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 17:42:01,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:01,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:01,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:01,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:42:01,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:01,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:42:01,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:01,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:01,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:42:01,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:42:01,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:42:01,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:42:01,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-28 17:42:01,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:01,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:01,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:01,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:42:01,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:01,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:42:01,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:01,636 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:01,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:42:01,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 17:42:01,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:42:01,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:42:01,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-28 17:42:01,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:01,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:01,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:01,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:42:01,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:01,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:42:01,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:01,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:01,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:42:01,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 17:42:01,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:42:01,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:01,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-28 17:42:01,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:01,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:01,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:01,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:42:01,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:01,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:42:01,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:01,726 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:01,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:42:01,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 17:42:01,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:42:01,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:42:01,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-28 17:42:01,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:01,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:01,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:01,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:42:01,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:01,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:42:01,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:01,736 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:01,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:42:01,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:42:01,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:42:01,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:01,747 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 17:42:01,747 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1824197689] [2020-10-28 17:42:01,747 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:42:01,748 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-28 17:42:01,748 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415882599] [2020-10-28 17:42:01,749 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 17:42:01,750 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:42:01,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 17:42:01,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-28 17:42:01,751 INFO L87 Difference]: Start difference. First operand 88 states and 124 transitions. Second operand 12 states. [2020-10-28 17:42:02,026 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-28 17:42:02,276 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-28 17:42:02,464 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-28 17:42:03,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:42:03,415 INFO L93 Difference]: Finished difference Result 148 states and 205 transitions. [2020-10-28 17:42:03,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 17:42:03,416 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 54 [2020-10-28 17:42:03,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:42:03,419 INFO L225 Difference]: With dead ends: 148 [2020-10-28 17:42:03,419 INFO L226 Difference]: Without dead ends: 88 [2020-10-28 17:42:03,421 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2020-10-28 17:42:03,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-10-28 17:42:03,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2020-10-28 17:42:03,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-28 17:42:03,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 108 transitions. [2020-10-28 17:42:03,440 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 108 transitions. Word has length 54 [2020-10-28 17:42:03,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:42:03,440 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 108 transitions. [2020-10-28 17:42:03,440 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 17:42:03,440 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 108 transitions. [2020-10-28 17:42:03,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-28 17:42:03,443 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:42:03,443 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] [2020-10-28 17:42:03,443 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 17:42:03,443 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:42:03,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:42:03,444 INFO L82 PathProgramCache]: Analyzing trace with hash 771533291, now seen corresponding path program 1 times [2020-10-28 17:42:03,444 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:42:03,445 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [669920957] [2020-10-28 17:42:03,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:42:03,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:03,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:03,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:04,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:04,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-28 17:42:04,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:42:04,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1193 [2020-10-28 17:42:04,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:04,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:04,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:42:04,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-28 17:42:04,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-28 17:42:04,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 17:42:04,866 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-28 17:42:04,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:42:04,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:04,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:04,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:04,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:42:04,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:04,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 17:42:04,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:04,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:04,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:42:04,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:42:04,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:42:04,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:42:04,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:42:04,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:04,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:04,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:04,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 17:42:04,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:04,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 17:42:04,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:04,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:04,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:42:04,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:42:04,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:42:04,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 17:42:04,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-28 17:42:04,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:04,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:04,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:04,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:42:04,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:04,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:42:04,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:04,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:04,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:42:04,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:42:04,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:42:04,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:42:05,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-28 17:42:05,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:05,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:05,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:05,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:42:05,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:05,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 17:42:05,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:05,029 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:05,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:42:05,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:42:05,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:42:05,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:05,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-28 17:42:05,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:05,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:05,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:05,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:42:05,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:05,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:42:05,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:05,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:05,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:42:05,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 17:42:05,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:42:05,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:05,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-28 17:42:05,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:05,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:05,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:05,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:42:05,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:05,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:42:05,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:05,127 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:05,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:42:05,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 17:42:05,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:42:05,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:05,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-28 17:42:05,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:05,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:05,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:05,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:42:05,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:05,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:42:05,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:05,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:05,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:42:05,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:42:05,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:42:05,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:05,151 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 17:42:05,152 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [669920957] [2020-10-28 17:42:05,152 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:42:05,152 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 17:42:05,152 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403701316] [2020-10-28 17:42:05,153 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 17:42:05,153 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:42:05,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 17:42:05,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:42:05,154 INFO L87 Difference]: Start difference. First operand 88 states and 108 transitions. Second operand 9 states. [2020-10-28 17:42:05,338 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-28 17:42:06,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:42:06,511 INFO L93 Difference]: Finished difference Result 190 states and 248 transitions. [2020-10-28 17:42:06,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 17:42:06,513 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 69 [2020-10-28 17:42:06,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:42:06,518 INFO L225 Difference]: With dead ends: 190 [2020-10-28 17:42:06,521 INFO L226 Difference]: Without dead ends: 136 [2020-10-28 17:42:06,522 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2020-10-28 17:42:06,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-10-28 17:42:06,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 133. [2020-10-28 17:42:06,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-10-28 17:42:06,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 170 transitions. [2020-10-28 17:42:06,583 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 170 transitions. Word has length 69 [2020-10-28 17:42:06,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:42:06,583 INFO L481 AbstractCegarLoop]: Abstraction has 133 states and 170 transitions. [2020-10-28 17:42:06,583 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 17:42:06,583 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 170 transitions. [2020-10-28 17:42:06,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-28 17:42:06,592 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:42:06,592 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] [2020-10-28 17:42:06,592 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 17:42:06,592 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:42:06,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:42:06,596 INFO L82 PathProgramCache]: Analyzing trace with hash 1781606837, now seen corresponding path program 1 times [2020-10-28 17:42:06,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:42:06,597 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1642716792] [2020-10-28 17:42:06,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:42:06,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:06,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:07,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:07,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-28 17:42:07,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:07,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 575 [2020-10-28 17:42:07,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:07,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:07,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 17:42:07,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-28 17:42:07,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-28 17:42:07,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:07,368 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-28 17:42:07,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:42:07,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:07,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:07,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:07,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:42:07,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:07,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:42:07,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:07,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:07,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:42:07,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:42:07,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:42:07,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:07,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:42:07,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:07,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:07,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:07,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 17:42:07,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:07,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 17:42:07,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:07,417 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:07,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:42:07,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:42:07,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 17:42:07,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:07,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-28 17:42:07,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:07,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:07,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:07,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:42:07,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:07,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:42:07,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:07,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:07,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:42:07,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:42:07,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:42:07,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:07,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-28 17:42:07,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:07,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:07,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:07,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:42:07,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:07,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 17:42:07,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:07,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:07,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:42:07,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:42:07,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:42:07,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:07,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-28 17:42:07,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:07,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:07,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:07,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:42:07,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:07,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 17:42:07,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:07,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:07,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:42:07,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:42:07,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:42:07,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:07,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-28 17:42:07,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:07,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:07,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:07,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:42:07,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:07,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 17:42:07,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:07,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:07,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:42:07,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:42:07,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:42:07,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:07,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-28 17:42:07,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:07,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:07,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:07,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:42:07,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:07,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 17:42:07,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:07,665 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:07,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:42:07,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 17:42:07,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 17:42:07,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 21 [2020-10-28 17:42:07,720 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 17:42:07,721 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1642716792] [2020-10-28 17:42:07,721 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:42:07,722 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-28 17:42:07,722 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450981521] [2020-10-28 17:42:07,722 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-28 17:42:07,723 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:42:07,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-28 17:42:07,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2020-10-28 17:42:07,724 INFO L87 Difference]: Start difference. First operand 133 states and 170 transitions. Second operand 13 states. [2020-10-28 17:42:07,944 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-28 17:42:08,122 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-10-28 17:42:08,273 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-28 17:42:09,296 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-28 17:42:09,455 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-28 17:42:09,692 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-28 17:42:11,078 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-28 17:42:13,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:42:13,168 INFO L93 Difference]: Finished difference Result 943 states and 1302 transitions. [2020-10-28 17:42:13,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2020-10-28 17:42:13,169 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 69 [2020-10-28 17:42:13,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:42:13,179 INFO L225 Difference]: With dead ends: 943 [2020-10-28 17:42:13,179 INFO L226 Difference]: Without dead ends: 844 [2020-10-28 17:42:13,183 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 928 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=646, Invalid=2324, Unknown=0, NotChecked=0, Total=2970 [2020-10-28 17:42:13,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 844 states. [2020-10-28 17:42:13,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 844 to 823. [2020-10-28 17:42:13,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 823 states. [2020-10-28 17:42:13,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 823 states to 823 states and 1124 transitions. [2020-10-28 17:42:13,308 INFO L78 Accepts]: Start accepts. Automaton has 823 states and 1124 transitions. Word has length 69 [2020-10-28 17:42:13,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:42:13,309 INFO L481 AbstractCegarLoop]: Abstraction has 823 states and 1124 transitions. [2020-10-28 17:42:13,309 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-28 17:42:13,309 INFO L276 IsEmpty]: Start isEmpty. Operand 823 states and 1124 transitions. [2020-10-28 17:42:13,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-28 17:42:13,311 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:42:13,312 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] [2020-10-28 17:42:13,312 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 17:42:13,312 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:42:13,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:42:13,313 INFO L82 PathProgramCache]: Analyzing trace with hash -2089262979, now seen corresponding path program 1 times [2020-10-28 17:42:13,313 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:42:13,313 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [979280871] [2020-10-28 17:42:13,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:42:13,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:13,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:13,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:13,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-28 17:42:13,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:13,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 515 [2020-10-28 17:42:13,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:13,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:13,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 17:42:13,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-28 17:42:13,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-28 17:42:13,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:14,023 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-28 17:42:14,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:42:14,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:14,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:14,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:14,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:42:14,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:14,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 17:42:14,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:14,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:14,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:42:14,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:42:14,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:42:14,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:14,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:42:14,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:14,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:14,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:14,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 17:42:14,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:14,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-28 17:42:14,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:14,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:14,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:42:14,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:42:14,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 17:42:14,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:42:14,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-28 17:42:14,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:14,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:14,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:14,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:42:14,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:14,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:42:14,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:14,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:14,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:42:14,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:42:14,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:42:14,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:14,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-28 17:42:14,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:14,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:14,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:14,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:42:14,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:14,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 17:42:14,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:14,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:14,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:42:14,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:42:14,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:42:14,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:42:14,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-28 17:42:14,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:14,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:14,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:14,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:42:14,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:14,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 17:42:14,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:14,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:14,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:42:14,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:42:14,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:42:14,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:14,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-28 17:42:14,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:14,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:14,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:14,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:42:14,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:14,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 17:42:14,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:14,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:14,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:42:14,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:42:14,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:42:14,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:14,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-28 17:42:14,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:14,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:14,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:14,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 17:42:14,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:14,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:42:14,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:14,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:14,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:42:14,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 17:42:14,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 17:42:14,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:14,406 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 17:42:14,406 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [979280871] [2020-10-28 17:42:14,406 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:42:14,407 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-28 17:42:14,407 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852557766] [2020-10-28 17:42:14,407 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-28 17:42:14,407 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:42:14,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-28 17:42:14,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-10-28 17:42:14,408 INFO L87 Difference]: Start difference. First operand 823 states and 1124 transitions. Second operand 13 states. [2020-10-28 17:42:14,601 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-28 17:42:14,781 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-10-28 17:42:14,948 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-28 17:42:15,656 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-28 17:42:16,239 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-28 17:42:17,345 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-28 17:42:19,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:42:19,418 INFO L93 Difference]: Finished difference Result 2118 states and 3035 transitions. [2020-10-28 17:42:19,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-10-28 17:42:19,419 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 71 [2020-10-28 17:42:19,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:42:19,440 INFO L225 Difference]: With dead ends: 2118 [2020-10-28 17:42:19,440 INFO L226 Difference]: Without dead ends: 1329 [2020-10-28 17:42:19,448 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 772 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=573, Invalid=1877, Unknown=0, NotChecked=0, Total=2450 [2020-10-28 17:42:19,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1329 states. [2020-10-28 17:42:19,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1329 to 1126. [2020-10-28 17:42:19,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1126 states. [2020-10-28 17:42:19,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1126 states to 1126 states and 1545 transitions. [2020-10-28 17:42:19,630 INFO L78 Accepts]: Start accepts. Automaton has 1126 states and 1545 transitions. Word has length 71 [2020-10-28 17:42:19,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:42:19,631 INFO L481 AbstractCegarLoop]: Abstraction has 1126 states and 1545 transitions. [2020-10-28 17:42:19,631 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-28 17:42:19,631 INFO L276 IsEmpty]: Start isEmpty. Operand 1126 states and 1545 transitions. [2020-10-28 17:42:19,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-28 17:42:19,633 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:42:19,633 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] [2020-10-28 17:42:19,633 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 17:42:19,633 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:42:19,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:42:19,634 INFO L82 PathProgramCache]: Analyzing trace with hash -825192507, now seen corresponding path program 1 times [2020-10-28 17:42:19,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:42:19,635 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [629915518] [2020-10-28 17:42:19,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:42:19,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:19,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:19,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:19,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:20,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:20,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-28 17:42:20,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 17:42:20,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 630 [2020-10-28 17:42:20,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:20,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:20,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:42:20,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-28 17:42:20,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 17:42:20,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 18 [2020-10-28 17:42:20,504 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-28 17:42:20,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:42:20,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:20,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:20,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:20,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:42:20,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:20,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 17:42:20,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:20,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:20,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:42:20,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:42:20,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:42:20,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:42:20,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:42:20,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:20,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:20,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:20,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 17:42:20,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:20,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:42:20,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:20,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:20,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:42:20,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:42:20,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:42:20,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:42:20,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-28 17:42:20,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:20,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:20,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:20,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:42:20,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:20,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:42:20,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:20,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:20,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:42:20,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:42:20,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:42:20,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:42:20,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-28 17:42:20,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:20,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:20,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:20,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:42:20,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:20,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:42:20,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:20,585 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:20,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:42:20,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:42:20,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:42:20,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:20,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-28 17:42:20,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:20,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:20,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:20,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:42:20,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:20,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:42:20,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:20,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:20,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:42:20,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:42:20,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:42:20,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:20,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-28 17:42:20,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:20,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:20,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:20,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:42:20,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:20,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:42:20,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:20,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:20,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:42:20,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:42:20,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:42:20,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:20,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-28 17:42:20,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:20,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:20,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:20,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 17:42:20,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:20,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:42:20,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:20,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:20,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:42:20,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-28 17:42:20,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 17:42:20,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:42:20,682 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 17:42:20,683 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [629915518] [2020-10-28 17:42:20,684 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:42:20,684 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 17:42:20,684 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146601637] [2020-10-28 17:42:20,685 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 17:42:20,685 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:42:20,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 17:42:20,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 17:42:20,688 INFO L87 Difference]: Start difference. First operand 1126 states and 1545 transitions. Second operand 7 states. [2020-10-28 17:42:21,220 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-28 17:42:21,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:42:21,858 INFO L93 Difference]: Finished difference Result 2795 states and 3882 transitions. [2020-10-28 17:42:21,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 17:42:21,859 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 71 [2020-10-28 17:42:21,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:42:21,871 INFO L225 Difference]: With dead ends: 2795 [2020-10-28 17:42:21,871 INFO L226 Difference]: Without dead ends: 1703 [2020-10-28 17:42:21,877 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2020-10-28 17:42:21,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1703 states. [2020-10-28 17:42:22,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1703 to 1700. [2020-10-28 17:42:22,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1700 states. [2020-10-28 17:42:22,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1700 states to 1700 states and 2317 transitions. [2020-10-28 17:42:22,058 INFO L78 Accepts]: Start accepts. Automaton has 1700 states and 2317 transitions. Word has length 71 [2020-10-28 17:42:22,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:42:22,059 INFO L481 AbstractCegarLoop]: Abstraction has 1700 states and 2317 transitions. [2020-10-28 17:42:22,059 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 17:42:22,059 INFO L276 IsEmpty]: Start isEmpty. Operand 1700 states and 2317 transitions. [2020-10-28 17:42:22,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-28 17:42:22,061 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:42:22,061 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] [2020-10-28 17:42:22,061 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 17:42:22,061 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:42:22,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:42:22,062 INFO L82 PathProgramCache]: Analyzing trace with hash 1338113601, now seen corresponding path program 1 times [2020-10-28 17:42:22,062 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:42:22,062 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [584223664] [2020-10-28 17:42:22,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:42:22,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:22,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:22,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:22,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:22,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:24,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:24,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-28 17:42:24,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:42:24,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2807 [2020-10-28 17:42:24,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:24,893 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:24,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:42:24,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-28 17:42:24,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-28 17:42:24,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:25,043 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-28 17:42:25,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:42:25,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:25,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:25,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:25,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:42:25,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:25,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:42:25,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:25,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:25,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:42:25,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:42:25,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:42:25,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:25,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:42:25,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:25,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:25,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:25,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 17:42:25,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:25,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 17:42:25,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:25,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:25,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:42:25,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:42:25,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 17:42:25,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:25,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-28 17:42:25,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:25,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:25,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:25,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:42:25,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:25,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:42:25,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:25,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:25,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:42:25,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:42:25,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:42:25,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:25,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-28 17:42:25,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:25,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:25,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:25,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:42:25,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:25,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:42:25,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:25,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:25,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:42:25,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:42:25,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:42:25,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:25,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-28 17:42:25,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:25,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:25,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:25,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:42:25,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:25,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:42:25,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:25,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:25,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:42:25,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:42:25,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:42:25,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:25,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-28 17:42:25,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:25,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:25,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:25,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:42:25,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:25,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 17:42:25,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:25,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:25,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:42:25,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:42:25,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 17:42:25,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:25,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-28 17:42:25,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:25,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:25,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:25,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:42:25,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:25,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:42:25,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:25,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:25,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:42:25,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:42:25,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:42:25,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:42:25,294 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 17:42:25,295 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [584223664] [2020-10-28 17:42:25,295 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:42:25,296 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 17:42:25,296 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035673483] [2020-10-28 17:42:25,296 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 17:42:25,296 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:42:25,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 17:42:25,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:42:25,302 INFO L87 Difference]: Start difference. First operand 1700 states and 2317 transitions. Second operand 9 states. [2020-10-28 17:42:25,469 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-28 17:42:26,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:42:26,883 INFO L93 Difference]: Finished difference Result 4798 states and 6595 transitions. [2020-10-28 17:42:26,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 17:42:26,884 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 71 [2020-10-28 17:42:26,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:42:26,904 INFO L225 Difference]: With dead ends: 4798 [2020-10-28 17:42:26,904 INFO L226 Difference]: Without dead ends: 3132 [2020-10-28 17:42:26,911 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-10-28 17:42:26,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3132 states. [2020-10-28 17:42:27,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3132 to 3129. [2020-10-28 17:42:27,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3129 states. [2020-10-28 17:42:27,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3129 states to 3129 states and 4211 transitions. [2020-10-28 17:42:27,226 INFO L78 Accepts]: Start accepts. Automaton has 3129 states and 4211 transitions. Word has length 71 [2020-10-28 17:42:27,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:42:27,226 INFO L481 AbstractCegarLoop]: Abstraction has 3129 states and 4211 transitions. [2020-10-28 17:42:27,226 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 17:42:27,227 INFO L276 IsEmpty]: Start isEmpty. Operand 3129 states and 4211 transitions. [2020-10-28 17:42:27,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-28 17:42:27,237 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:42:27,238 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] [2020-10-28 17:42:27,238 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 17:42:27,238 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:42:27,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:42:27,239 INFO L82 PathProgramCache]: Analyzing trace with hash -916829943, now seen corresponding path program 1 times [2020-10-28 17:42:27,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:42:27,239 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1047169937] [2020-10-28 17:42:27,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:42:27,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:27,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:27,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:27,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:27,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:29,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:29,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-28 17:42:29,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:42:29,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2588 [2020-10-28 17:42:29,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:29,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:29,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:42:29,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-28 17:42:29,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-28 17:42:29,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:30,003 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-28 17:42:30,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:42:30,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:30,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:30,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:30,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:42:30,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:30,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:42:30,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:30,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:30,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:42:30,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:42:30,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:42:30,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:30,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:42:30,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:30,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:30,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:30,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 17:42:30,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:30,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 17:42:30,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:30,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:30,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:42:30,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:42:30,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:42:30,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:30,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-28 17:42:30,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:30,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:30,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:30,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:42:30,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:30,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:42:30,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:30,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:30,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:42:30,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:42:30,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:42:30,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:30,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-28 17:42:30,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:30,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:30,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:30,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:42:30,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:30,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:42:30,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:30,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:30,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:42:30,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:42:30,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:42:30,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:30,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-28 17:42:30,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:30,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:30,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:30,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:42:30,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:30,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 17:42:30,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:30,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:30,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:42:30,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:42:30,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 17:42:30,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:30,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-28 17:42:30,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:30,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:30,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:30,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:42:30,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:30,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:42:30,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:30,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:30,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:42:30,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 17:42:30,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:42:30,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:30,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-28 17:42:30,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:30,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:30,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:30,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:42:30,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:30,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:42:30,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:30,210 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:30,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:42:30,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:42:30,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:42:30,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:30,227 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 17:42:30,228 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1047169937] [2020-10-28 17:42:30,228 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:42:30,229 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 17:42:30,229 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051984513] [2020-10-28 17:42:30,230 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 17:42:30,230 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:42:30,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 17:42:30,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:42:30,232 INFO L87 Difference]: Start difference. First operand 3129 states and 4211 transitions. Second operand 9 states. [2020-10-28 17:42:30,379 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-28 17:42:32,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:42:32,070 INFO L93 Difference]: Finished difference Result 8841 states and 11967 transitions. [2020-10-28 17:42:32,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 17:42:32,071 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 71 [2020-10-28 17:42:32,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:42:32,105 INFO L225 Difference]: With dead ends: 8841 [2020-10-28 17:42:32,106 INFO L226 Difference]: Without dead ends: 5746 [2020-10-28 17:42:32,116 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-10-28 17:42:32,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5746 states. [2020-10-28 17:42:32,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5746 to 5743. [2020-10-28 17:42:32,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5743 states. [2020-10-28 17:42:32,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5743 states to 5743 states and 7596 transitions. [2020-10-28 17:42:32,732 INFO L78 Accepts]: Start accepts. Automaton has 5743 states and 7596 transitions. Word has length 71 [2020-10-28 17:42:32,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:42:32,732 INFO L481 AbstractCegarLoop]: Abstraction has 5743 states and 7596 transitions. [2020-10-28 17:42:32,732 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 17:42:32,732 INFO L276 IsEmpty]: Start isEmpty. Operand 5743 states and 7596 transitions. [2020-10-28 17:42:32,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-28 17:42:32,733 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:42:32,733 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] [2020-10-28 17:42:32,734 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 17:42:32,734 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:42:32,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:42:32,734 INFO L82 PathProgramCache]: Analyzing trace with hash 1482103816, now seen corresponding path program 1 times [2020-10-28 17:42:32,734 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:42:32,735 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2144432515] [2020-10-28 17:42:32,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:42:32,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:32,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:33,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:33,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-28 17:42:33,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:33,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 393 [2020-10-28 17:42:33,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:33,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:33,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 17:42:33,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-28 17:42:33,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:42:33,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:33,364 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-28 17:42:33,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:42:33,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:33,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:33,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:33,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:42:33,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:33,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:42:33,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:33,378 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:33,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:42:33,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:42:33,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:42:33,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:33,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:42:33,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:33,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:33,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:33,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 17:42:33,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:33,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:42:33,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:33,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:33,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:42:33,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:42:33,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:42:33,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:33,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-28 17:42:33,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:33,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:33,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:33,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:42:33,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:33,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:42:33,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:33,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:33,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:42:33,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:42:33,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:42:33,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:33,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-28 17:42:33,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:33,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:33,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:33,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:42:33,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:33,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:42:33,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:33,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:33,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:42:33,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:42:33,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:42:33,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:33,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-28 17:42:33,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:33,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:33,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:33,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:42:33,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:33,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:42:33,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:33,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:33,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:42:33,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:42:33,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:42:33,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:33,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-28 17:42:33,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:33,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:33,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:33,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:42:33,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:33,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:42:33,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:33,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:33,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:42:33,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:42:33,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:42:33,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:33,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-28 17:42:33,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:33,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:33,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:33,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:42:33,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:33,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:42:33,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:33,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:33,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:42:33,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:42:33,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 17:42:33,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:33,542 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 17:42:33,542 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2144432515] [2020-10-28 17:42:33,542 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:42:33,542 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-28 17:42:33,543 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542405083] [2020-10-28 17:42:33,543 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 17:42:33,543 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:42:33,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 17:42:33,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-28 17:42:33,544 INFO L87 Difference]: Start difference. First operand 5743 states and 7596 transitions. Second operand 12 states. [2020-10-28 17:42:34,194 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-28 17:42:34,341 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-28 17:42:34,518 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-28 17:42:34,712 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2020-10-28 17:42:35,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:42:35,623 INFO L93 Difference]: Finished difference Result 6369 states and 8687 transitions. [2020-10-28 17:42:35,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 17:42:35,624 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 72 [2020-10-28 17:42:35,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:42:35,670 INFO L225 Difference]: With dead ends: 6369 [2020-10-28 17:42:35,670 INFO L226 Difference]: Without dead ends: 6366 [2020-10-28 17:42:35,675 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2020-10-28 17:42:35,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6366 states. [2020-10-28 17:42:36,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6366 to 5959. [2020-10-28 17:42:36,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5959 states. [2020-10-28 17:42:36,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5959 states to 5959 states and 7800 transitions. [2020-10-28 17:42:36,436 INFO L78 Accepts]: Start accepts. Automaton has 5959 states and 7800 transitions. Word has length 72 [2020-10-28 17:42:36,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:42:36,437 INFO L481 AbstractCegarLoop]: Abstraction has 5959 states and 7800 transitions. [2020-10-28 17:42:36,437 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 17:42:36,437 INFO L276 IsEmpty]: Start isEmpty. Operand 5959 states and 7800 transitions. [2020-10-28 17:42:36,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-28 17:42:36,438 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:42:36,438 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] [2020-10-28 17:42:36,438 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 17:42:36,438 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:42:36,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:42:36,439 INFO L82 PathProgramCache]: Analyzing trace with hash 1951537577, now seen corresponding path program 1 times [2020-10-28 17:42:36,439 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:42:36,439 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1615380941] [2020-10-28 17:42:36,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:42:36,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:36,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:36,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:36,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:36,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-28 17:42:36,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:42:36,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 224 [2020-10-28 17:42:36,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:36,692 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:36,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:42:36,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-28 17:42:36,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-28 17:42:36,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:36,838 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-28 17:42:36,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:42:36,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:36,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:36,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:36,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:42:36,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:36,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:42:36,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:36,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:36,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:42:36,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:42:36,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:42:36,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:36,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:42:36,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:36,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:36,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:36,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 17:42:36,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:36,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:42:36,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:36,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:36,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:42:36,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:42:36,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-28 17:42:36,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:36,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-28 17:42:36,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:36,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:36,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:36,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:42:36,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:36,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:42:36,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:36,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:36,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:42:36,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:42:36,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:42:36,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:36,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-28 17:42:36,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:36,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:36,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:36,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:42:36,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:36,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 17:42:36,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:36,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:36,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:42:36,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:42:36,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:42:36,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:36,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-28 17:42:36,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:36,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:37,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:37,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:42:37,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:37,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-28 17:42:37,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:37,025 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:37,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:42:37,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:42:37,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:42:37,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:37,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-28 17:42:37,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:37,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:37,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:37,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:42:37,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:37,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:42:37,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:37,063 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:37,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:42:37,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:42:37,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:42:37,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:37,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-28 17:42:37,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:37,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:37,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:37,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:37,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:42:37,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:42:37,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:42:37,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:37,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:37,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:42:37,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-28 17:42:37,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:42:37,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:42:37,109 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 17:42:37,110 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1615380941] [2020-10-28 17:42:37,110 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:42:37,110 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 17:42:37,110 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788638936] [2020-10-28 17:42:37,111 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 17:42:37,111 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:42:37,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 17:42:37,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:42:37,112 INFO L87 Difference]: Start difference. First operand 5959 states and 7800 transitions. Second operand 9 states. [2020-10-28 17:42:37,269 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-28 17:42:38,200 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-28 17:42:39,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:42:39,383 INFO L93 Difference]: Finished difference Result 13048 states and 17159 transitions. [2020-10-28 17:42:39,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-28 17:42:39,384 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 72 [2020-10-28 17:42:39,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:42:39,435 INFO L225 Difference]: With dead ends: 13048 [2020-10-28 17:42:39,435 INFO L226 Difference]: Without dead ends: 7123 [2020-10-28 17:42:39,458 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=118, Invalid=302, Unknown=0, NotChecked=0, Total=420 [2020-10-28 17:42:39,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7123 states. [2020-10-28 17:42:40,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7123 to 7117. [2020-10-28 17:42:40,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7117 states. [2020-10-28 17:42:40,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7117 states to 7117 states and 9321 transitions. [2020-10-28 17:42:40,291 INFO L78 Accepts]: Start accepts. Automaton has 7117 states and 9321 transitions. Word has length 72 [2020-10-28 17:42:40,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:42:40,291 INFO L481 AbstractCegarLoop]: Abstraction has 7117 states and 9321 transitions. [2020-10-28 17:42:40,291 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 17:42:40,291 INFO L276 IsEmpty]: Start isEmpty. Operand 7117 states and 9321 transitions. [2020-10-28 17:42:40,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-28 17:42:40,295 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:42:40,295 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:42:40,296 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 17:42:40,296 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:42:40,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:42:40,297 INFO L82 PathProgramCache]: Analyzing trace with hash -7575546, now seen corresponding path program 1 times [2020-10-28 17:42:40,297 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:42:40,297 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [435743057] [2020-10-28 17:42:40,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:42:40,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:40,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:40,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:40,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:41,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:41,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:45,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:45,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-28 17:42:45,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:42:45,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-28 17:42:45,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:45,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:45,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:42:45,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-28 17:42:45,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-28 17:42:45,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:42:45,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:42:45,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:45,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:45,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:45,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:42:45,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:45,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 17:42:45,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:45,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:45,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:42:45,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:42:45,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:42:45,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:45,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:42:45,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:45,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:45,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:45,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 17:42:45,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:45,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:42:45,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:45,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:45,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:42:45,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:42:45,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:42:45,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:45,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-28 17:42:45,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:45,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:45,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:45,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:42:45,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:45,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:42:45,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:45,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:45,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:42:45,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:42:45,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:42:45,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:45,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-28 17:42:45,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:45,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:45,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:45,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:42:45,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:45,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:42:45,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:45,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:45,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:42:45,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:42:45,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:42:45,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:45,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-28 17:42:45,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:45,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:45,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:45,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:42:45,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:45,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:42:45,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:45,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:45,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:42:45,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:42:45,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 17:42:45,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:45,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-28 17:42:45,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:45,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:45,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:45,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:42:45,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:45,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:42:45,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:45,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:45,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:42:45,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:42:45,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:42:45,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:45,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-28 17:42:45,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:45,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:45,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:45,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:42:45,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:45,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:42:45,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:45,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:45,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:42:45,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:42:45,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:42:45,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:45,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-28 17:42:45,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:45,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:45,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:45,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:42:45,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:45,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:42:45,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:45,650 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:45,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:42:45,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:42:45,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:42:45,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:45,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-28 17:42:45,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:45,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:45,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:45,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:42:45,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:45,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:42:45,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:45,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:45,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:42:45,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:42:45,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:42:45,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:45,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-28 17:42:45,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:45,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:45,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:45,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:42:45,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:45,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-28 17:42:45,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:45,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:45,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:42:45,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:42:45,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:42:45,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:45,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-28 17:42:45,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:45,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:45,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:45,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:42:45,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:45,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 17:42:45,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:45,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:45,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:42:45,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-28 17:42:45,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:42:45,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:45,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-28 17:42:45,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:45,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:45,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:45,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:42:45,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:45,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:42:45,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:45,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:45,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:42:45,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:42:45,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:42:45,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:45,810 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-28 17:42:45,811 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [435743057] [2020-10-28 17:42:45,811 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:42:45,811 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 17:42:45,811 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933194909] [2020-10-28 17:42:45,812 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 17:42:45,812 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:42:45,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 17:42:45,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:42:45,813 INFO L87 Difference]: Start difference. First operand 7117 states and 9321 transitions. Second operand 9 states. [2020-10-28 17:42:46,026 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-28 17:42:46,413 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-10-28 17:42:47,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:42:47,732 INFO L93 Difference]: Finished difference Result 14199 states and 18605 transitions. [2020-10-28 17:42:47,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 17:42:47,733 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 109 [2020-10-28 17:42:47,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:42:47,769 INFO L225 Difference]: With dead ends: 14199 [2020-10-28 17:42:47,769 INFO L226 Difference]: Without dead ends: 7120 [2020-10-28 17:42:47,790 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=93, Invalid=213, Unknown=0, NotChecked=0, Total=306 [2020-10-28 17:42:47,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7120 states. [2020-10-28 17:42:48,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7120 to 7117. [2020-10-28 17:42:48,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7117 states. [2020-10-28 17:42:48,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7117 states to 7117 states and 9165 transitions. [2020-10-28 17:42:48,488 INFO L78 Accepts]: Start accepts. Automaton has 7117 states and 9165 transitions. Word has length 109 [2020-10-28 17:42:48,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:42:48,489 INFO L481 AbstractCegarLoop]: Abstraction has 7117 states and 9165 transitions. [2020-10-28 17:42:48,489 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 17:42:48,489 INFO L276 IsEmpty]: Start isEmpty. Operand 7117 states and 9165 transitions. [2020-10-28 17:42:48,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-28 17:42:48,492 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:42:48,493 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:42:48,493 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 17:42:48,493 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:42:48,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:42:48,494 INFO L82 PathProgramCache]: Analyzing trace with hash -762110448, now seen corresponding path program 1 times [2020-10-28 17:42:48,494 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:42:48,494 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [649052857] [2020-10-28 17:42:48,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:42:48,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:48,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:48,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:48,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:50,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:50,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:53,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:53,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-28 17:42:53,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:42:53,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 17:42:53,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:53,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:53,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 17:42:53,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-28 17:42:53,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-28 17:42:53,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:53,717 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-28 17:42:53,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:42:53,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:53,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:53,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:53,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:42:53,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:53,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 17:42:53,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:53,742 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:53,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:42:53,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:42:53,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:42:53,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:53,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:42:53,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:53,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:53,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:53,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 17:42:53,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:53,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 17:42:53,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:53,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:53,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:42:53,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:42:53,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 17:42:53,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:53,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-28 17:42:53,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:53,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:53,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:53,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:42:53,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:53,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:42:53,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:53,787 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:53,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:42:53,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:42:53,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:42:53,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:53,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-28 17:42:53,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:53,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:53,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:53,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:42:53,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:53,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 17:42:53,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:53,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:53,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:42:53,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:42:53,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:42:53,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:53,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-28 17:42:53,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:53,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:53,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:53,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:42:53,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:53,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 17:42:53,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:53,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:53,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:42:53,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:42:53,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:42:53,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:53,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-28 17:42:53,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:53,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:53,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:53,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:42:53,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:53,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:42:53,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:53,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:53,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:42:53,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:42:53,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:42:53,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:53,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-28 17:42:53,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:53,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:53,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:53,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:42:53,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:53,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:42:53,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:53,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:53,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:42:53,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:42:53,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:42:53,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:53,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-28 17:42:53,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:53,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:53,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:53,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:42:53,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:53,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:42:53,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:53,949 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:53,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:42:53,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:42:53,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:42:53,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:53,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-28 17:42:53,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:53,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:53,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:53,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:42:53,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:53,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 17:42:53,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:53,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:53,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:42:53,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:42:53,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:42:53,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:53,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-28 17:42:53,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:53,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:53,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:53,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:42:53,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:53,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:42:53,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:53,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:53,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:42:53,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:42:53,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:42:53,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:54,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-28 17:42:54,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:54,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:54,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:54,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:42:54,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:54,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:42:54,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:54,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:54,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:42:54,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:42:54,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:42:54,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:54,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-28 17:42:54,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:54,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:54,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:54,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:42:54,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:54,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:42:54,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:54,036 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:54,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:42:54,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 17:42:54,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 17:42:54,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:54,080 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-28 17:42:54,080 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [649052857] [2020-10-28 17:42:54,080 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:42:54,081 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-28 17:42:54,081 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314845420] [2020-10-28 17:42:54,081 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-28 17:42:54,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:42:54,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-28 17:42:54,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2020-10-28 17:42:54,082 INFO L87 Difference]: Start difference. First operand 7117 states and 9165 transitions. Second operand 14 states. [2020-10-28 17:42:54,408 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 112 [2020-10-28 17:42:54,573 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-10-28 17:42:54,730 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-28 17:42:55,507 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-10-28 17:42:55,896 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-28 17:42:56,363 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-28 17:42:56,530 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-28 17:42:56,685 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-28 17:42:56,843 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-28 17:42:59,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:42:59,313 INFO L93 Difference]: Finished difference Result 13306 states and 17364 transitions. [2020-10-28 17:42:59,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-10-28 17:42:59,314 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 109 [2020-10-28 17:42:59,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:42:59,344 INFO L225 Difference]: With dead ends: 13306 [2020-10-28 17:42:59,344 INFO L226 Difference]: Without dead ends: 6971 [2020-10-28 17:42:59,364 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 685 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=569, Invalid=2083, Unknown=0, NotChecked=0, Total=2652 [2020-10-28 17:42:59,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6971 states. [2020-10-28 17:42:59,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6971 to 6861. [2020-10-28 17:42:59,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6861 states. [2020-10-28 17:43:00,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6861 states to 6861 states and 8848 transitions. [2020-10-28 17:43:00,011 INFO L78 Accepts]: Start accepts. Automaton has 6861 states and 8848 transitions. Word has length 109 [2020-10-28 17:43:00,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:43:00,012 INFO L481 AbstractCegarLoop]: Abstraction has 6861 states and 8848 transitions. [2020-10-28 17:43:00,012 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-28 17:43:00,012 INFO L276 IsEmpty]: Start isEmpty. Operand 6861 states and 8848 transitions. [2020-10-28 17:43:00,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-28 17:43:00,015 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:43:00,015 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:43:00,015 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 17:43:00,016 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:43:00,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:43:00,016 INFO L82 PathProgramCache]: Analyzing trace with hash 2032448206, now seen corresponding path program 1 times [2020-10-28 17:43:00,016 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:43:00,016 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2106120495] [2020-10-28 17:43:00,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:43:00,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:00,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:00,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:00,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:00,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:05,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:05,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-28 17:43:05,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:43:05,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 17:43:05,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:05,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:05,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 17:43:05,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-28 17:43:05,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-28 17:43:05,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:05,242 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-28 17:43:05,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:43:05,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:05,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:05,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:05,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:43:05,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:05,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 17:43:05,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:05,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:05,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:43:05,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:43:05,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:43:05,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:05,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:43:05,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:05,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:05,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:05,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 17:43:05,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:05,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 17:43:05,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:05,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:05,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:43:05,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:43:05,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 17:43:05,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:43:05,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-28 17:43:05,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:05,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:05,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:05,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:43:05,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:05,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:43:05,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:05,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:05,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:43:05,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:43:05,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:43:05,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:43:05,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-28 17:43:05,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:05,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:05,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:05,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:43:05,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:05,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 17:43:05,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:05,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:05,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:43:05,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:43:05,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:43:05,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:43:05,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-28 17:43:05,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:05,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:05,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:05,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:43:05,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:05,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 17:43:05,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:05,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:05,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:43:05,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:43:05,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:43:05,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:05,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-28 17:43:05,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:05,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:05,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:05,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:43:05,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:05,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 17:43:05,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:05,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:05,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:43:05,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:43:05,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:43:05,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:05,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-28 17:43:05,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:05,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:05,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:05,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:43:05,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:05,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:43:05,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:05,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:05,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:43:05,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:43:05,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:43:05,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:05,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-28 17:43:05,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:05,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:05,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:05,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:43:05,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:05,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:43:05,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:05,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:05,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:43:05,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:43:05,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:43:05,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:05,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-28 17:43:05,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:05,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:05,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:05,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:43:05,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:05,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:43:05,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:05,555 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:05,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:43:05,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:43:05,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:43:05,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:05,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-28 17:43:05,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:05,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:05,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:05,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:43:05,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:05,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:43:05,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:05,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:05,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:43:05,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:43:05,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:43:05,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:05,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-28 17:43:05,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:05,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:05,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:05,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:43:05,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:05,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 17:43:05,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:05,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:05,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:43:05,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:43:05,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:43:05,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:05,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-28 17:43:05,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:05,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:05,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:05,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:43:05,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:05,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 17:43:05,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:05,704 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:05,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:43:05,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 17:43:05,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 17:43:05,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:43:05,755 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-28 17:43:05,755 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2106120495] [2020-10-28 17:43:05,755 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:43:05,756 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-28 17:43:05,756 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399279653] [2020-10-28 17:43:05,757 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-28 17:43:05,757 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:43:05,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-28 17:43:05,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2020-10-28 17:43:05,758 INFO L87 Difference]: Start difference. First operand 6861 states and 8848 transitions. Second operand 14 states. [2020-10-28 17:43:06,081 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 111 [2020-10-28 17:43:06,261 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-10-28 17:43:06,430 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-28 17:43:07,328 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-10-28 17:43:07,970 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-28 17:43:08,176 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-28 17:43:10,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:43:10,808 INFO L93 Difference]: Finished difference Result 15294 states and 20162 transitions. [2020-10-28 17:43:10,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-28 17:43:10,811 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 109 [2020-10-28 17:43:10,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:43:10,853 INFO L225 Difference]: With dead ends: 15294 [2020-10-28 17:43:10,854 INFO L226 Difference]: Without dead ends: 10183 [2020-10-28 17:43:10,871 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 488 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=491, Invalid=1579, Unknown=0, NotChecked=0, Total=2070 [2020-10-28 17:43:10,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10183 states. [2020-10-28 17:43:11,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10183 to 9491. [2020-10-28 17:43:11,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9491 states. [2020-10-28 17:43:11,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9491 states to 9491 states and 12209 transitions. [2020-10-28 17:43:11,932 INFO L78 Accepts]: Start accepts. Automaton has 9491 states and 12209 transitions. Word has length 109 [2020-10-28 17:43:11,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:43:11,932 INFO L481 AbstractCegarLoop]: Abstraction has 9491 states and 12209 transitions. [2020-10-28 17:43:11,932 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-28 17:43:11,933 INFO L276 IsEmpty]: Start isEmpty. Operand 9491 states and 12209 transitions. [2020-10-28 17:43:11,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-28 17:43:11,935 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:43:11,935 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:43:11,936 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 17:43:11,936 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:43:11,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:43:11,936 INFO L82 PathProgramCache]: Analyzing trace with hash 1237599514, now seen corresponding path program 1 times [2020-10-28 17:43:11,937 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:43:11,937 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1766829045] [2020-10-28 17:43:11,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:43:11,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:11,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:12,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:12,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:12,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:13,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:13,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:16,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:16,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-28 17:43:16,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 17:43:16,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 17:43:16,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:16,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:16,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:43:16,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-28 17:43:16,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-28 17:43:16,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:17,097 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-28 17:43:17,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:43:17,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:17,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:17,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:17,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:43:17,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:17,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:43:17,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:17,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:17,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:43:17,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:43:17,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:43:17,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:17,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:43:17,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:17,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:17,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:17,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 17:43:17,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:17,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:43:17,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:17,138 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:17,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:43:17,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:43:17,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:43:17,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:43:17,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-28 17:43:17,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:17,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:17,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:17,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:43:17,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:17,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:43:17,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:17,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:17,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:43:17,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:43:17,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:43:17,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:43:17,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-28 17:43:17,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:17,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:17,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:17,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:43:17,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:17,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:43:17,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:17,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:17,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:43:17,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:43:17,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:43:17,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:43:17,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-28 17:43:17,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:17,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:17,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:17,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:43:17,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:17,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:43:17,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:17,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:17,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:43:17,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:43:17,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:43:17,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:43:17,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-28 17:43:17,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:17,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:17,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:17,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:43:17,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:17,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:43:17,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:17,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:17,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:43:17,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:43:17,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 17:43:17,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:17,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-28 17:43:17,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:17,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:17,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:17,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:43:17,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:17,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:43:17,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:17,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:17,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:43:17,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:43:17,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:43:17,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:43:17,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-28 17:43:17,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:17,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:17,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:17,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:43:17,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:17,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:43:17,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:17,314 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:17,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:43:17,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:43:17,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:43:17,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 17:43:17,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-28 17:43:17,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:17,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:17,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:17,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:43:17,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:17,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:43:17,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:17,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:17,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:43:17,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:43:17,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:43:17,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:43:17,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-28 17:43:17,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:17,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:17,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:17,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:43:17,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:17,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:43:17,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:17,349 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:17,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:43:17,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:43:17,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:43:17,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:17,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-28 17:43:17,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:17,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:17,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:17,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:43:17,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:17,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 17:43:17,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:17,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:17,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:43:17,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:43:17,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:43:17,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:43:17,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-28 17:43:17,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:17,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:17,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:17,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:43:17,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:17,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:43:17,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:17,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:17,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:43:17,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:43:17,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:43:17,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:17,461 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-28 17:43:17,462 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1766829045] [2020-10-28 17:43:17,462 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:43:17,462 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 17:43:17,463 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047175876] [2020-10-28 17:43:17,463 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 17:43:17,464 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:43:17,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 17:43:17,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:43:17,464 INFO L87 Difference]: Start difference. First operand 9491 states and 12209 transitions. Second operand 9 states. [2020-10-28 17:43:17,741 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-28 17:43:18,163 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-10-28 17:43:18,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:43:18,955 INFO L93 Difference]: Finished difference Result 14229 states and 18322 transitions. [2020-10-28 17:43:18,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 17:43:18,956 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 109 [2020-10-28 17:43:18,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:43:18,971 INFO L225 Difference]: With dead ends: 14229 [2020-10-28 17:43:18,971 INFO L226 Difference]: Without dead ends: 4776 [2020-10-28 17:43:18,993 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=93, Invalid=213, Unknown=0, NotChecked=0, Total=306 [2020-10-28 17:43:18,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4776 states. [2020-10-28 17:43:19,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4776 to 4773. [2020-10-28 17:43:19,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4773 states. [2020-10-28 17:43:19,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4773 states to 4773 states and 6018 transitions. [2020-10-28 17:43:19,444 INFO L78 Accepts]: Start accepts. Automaton has 4773 states and 6018 transitions. Word has length 109 [2020-10-28 17:43:19,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:43:19,445 INFO L481 AbstractCegarLoop]: Abstraction has 4773 states and 6018 transitions. [2020-10-28 17:43:19,445 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 17:43:19,445 INFO L276 IsEmpty]: Start isEmpty. Operand 4773 states and 6018 transitions. [2020-10-28 17:43:19,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-28 17:43:19,447 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:43:19,447 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:43:19,447 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 17:43:19,447 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:43:19,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:43:19,448 INFO L82 PathProgramCache]: Analyzing trace with hash -879182896, now seen corresponding path program 1 times [2020-10-28 17:43:19,448 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:43:19,448 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1866481806] [2020-10-28 17:43:19,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:43:19,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:19,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:19,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:19,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:20,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:20,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:21,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:24,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:24,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-28 17:43:24,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 17:43:24,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-28 17:43:24,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:24,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:24,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 17:43:24,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-28 17:43:24,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-28 17:43:24,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:24,638 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-28 17:43:24,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:43:24,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:24,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:24,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:24,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:43:24,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:24,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:43:24,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:24,650 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:24,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:43:24,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:43:24,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:43:24,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:24,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:43:24,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:24,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:24,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:24,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 17:43:24,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:24,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:43:24,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:24,672 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:24,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:43:24,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:43:24,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 17:43:24,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:24,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-28 17:43:24,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:24,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:24,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:24,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:43:24,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:24,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:43:24,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:24,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:24,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:43:24,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:43:24,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:43:24,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:24,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-28 17:43:24,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:24,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:24,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:24,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:43:24,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:24,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 17:43:24,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:24,720 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:24,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:43:24,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:43:24,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:43:24,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:24,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-28 17:43:24,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:24,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:24,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:24,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:43:24,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:24,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:43:24,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:24,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:24,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:43:24,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:43:24,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:43:24,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:24,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-28 17:43:24,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:24,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:24,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:24,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:43:24,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:24,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:43:24,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:24,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:24,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:43:24,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:43:24,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:43:24,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:24,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-28 17:43:24,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:24,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:24,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:24,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:43:24,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:24,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:43:24,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:24,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:24,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:43:24,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:43:24,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:43:24,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:24,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-28 17:43:24,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:24,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:24,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:24,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:43:24,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:24,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:43:24,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:24,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:24,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:43:24,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:43:24,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:43:24,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:24,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-28 17:43:24,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:24,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:24,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:24,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:43:24,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:24,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:43:24,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:24,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:24,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:43:24,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:43:24,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:43:24,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:24,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-28 17:43:24,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:24,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:24,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:24,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:43:24,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:24,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:43:24,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:24,881 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:24,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:43:24,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:43:24,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:43:24,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:24,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-28 17:43:24,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:24,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:24,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:24,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:43:24,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:24,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:43:24,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:24,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:24,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:43:24,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:43:24,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:43:24,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:24,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-28 17:43:24,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:24,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:24,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:24,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:43:24,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:24,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:43:24,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:24,941 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:24,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:43:24,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 17:43:24,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 17:43:24,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:24,982 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 10 proven. 12 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 17:43:24,983 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1866481806] [2020-10-28 17:43:24,983 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:43:24,983 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-28 17:43:24,983 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813078282] [2020-10-28 17:43:24,984 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-28 17:43:24,984 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:43:24,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-28 17:43:24,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2020-10-28 17:43:24,985 INFO L87 Difference]: Start difference. First operand 4773 states and 6018 transitions. Second operand 15 states. [2020-10-28 17:43:25,311 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 112 [2020-10-28 17:43:25,493 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-28 17:43:26,102 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-28 17:43:26,852 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 112 [2020-10-28 17:43:27,724 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-28 17:43:29,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:43:29,378 INFO L93 Difference]: Finished difference Result 9924 states and 12646 transitions. [2020-10-28 17:43:29,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-28 17:43:29,379 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 109 [2020-10-28 17:43:29,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:43:29,402 INFO L225 Difference]: With dead ends: 9924 [2020-10-28 17:43:29,403 INFO L226 Difference]: Without dead ends: 6282 [2020-10-28 17:43:29,414 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 361 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=439, Invalid=1283, Unknown=0, NotChecked=0, Total=1722 [2020-10-28 17:43:29,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6282 states. [2020-10-28 17:43:29,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6282 to 6062. [2020-10-28 17:43:29,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6062 states. [2020-10-28 17:43:29,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6062 states to 6062 states and 7662 transitions. [2020-10-28 17:43:29,984 INFO L78 Accepts]: Start accepts. Automaton has 6062 states and 7662 transitions. Word has length 109 [2020-10-28 17:43:29,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:43:29,984 INFO L481 AbstractCegarLoop]: Abstraction has 6062 states and 7662 transitions. [2020-10-28 17:43:29,984 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-28 17:43:29,984 INFO L276 IsEmpty]: Start isEmpty. Operand 6062 states and 7662 transitions. [2020-10-28 17:43:29,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-28 17:43:29,987 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:43:29,987 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:43:29,987 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 17:43:29,987 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:43:29,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:43:29,988 INFO L82 PathProgramCache]: Analyzing trace with hash -1085834940, now seen corresponding path program 1 times [2020-10-28 17:43:29,988 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:43:29,988 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [440478391] [2020-10-28 17:43:29,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:43:30,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:30,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:30,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:30,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:30,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:30,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:35,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:35,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-28 17:43:35,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:43:35,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 17:43:35,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:35,015 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:35,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 17:43:35,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-28 17:43:35,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-28 17:43:35,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:35,206 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-28 17:43:35,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:43:35,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:35,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:35,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:35,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:43:35,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:35,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:43:35,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:35,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:35,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:43:35,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:43:35,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:43:35,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:35,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:43:35,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:35,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:35,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:35,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 17:43:35,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:35,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:43:35,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:35,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:35,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:43:35,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:43:35,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-28 17:43:35,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:35,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-28 17:43:35,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:35,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:35,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:35,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:43:35,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:35,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:43:35,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:35,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:35,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:43:35,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:43:35,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:43:35,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:35,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-28 17:43:35,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:35,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:35,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:35,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:43:35,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:35,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 17:43:35,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:35,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:35,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:43:35,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:43:35,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:43:35,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:35,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-28 17:43:35,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:35,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:35,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:35,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:43:35,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:35,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:43:35,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:35,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:35,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:43:35,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:43:35,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:43:35,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:35,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-28 17:43:35,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:35,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:35,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:35,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:43:35,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:35,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:43:35,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:35,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:35,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:43:35,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:43:35,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:43:35,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:35,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-28 17:43:35,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:35,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:35,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:35,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:43:35,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:35,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:43:35,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:35,367 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:35,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:43:35,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:43:35,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:43:35,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:35,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-28 17:43:35,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:35,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:35,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:35,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:43:35,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:35,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:43:35,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:35,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:35,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:43:35,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:43:35,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:43:35,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:35,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-28 17:43:35,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:35,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:35,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:35,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:43:35,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:35,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 17:43:35,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:35,394 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:35,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 17:43:35,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:43:35,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:43:35,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:35,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-28 17:43:35,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:35,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:35,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:35,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:43:35,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:35,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:43:35,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:35,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:35,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:43:35,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:43:35,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:43:35,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:35,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-28 17:43:35,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:35,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:35,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:35,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:43:35,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:35,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:43:35,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:35,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:35,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:43:35,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:43:35,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:43:35,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:35,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 17:43:35,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:35,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:35,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:35,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:35,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:43:35,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:43:35,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:43:35,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:35,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:35,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:43:35,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-28 17:43:35,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:43:35,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:35,503 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-28 17:43:35,503 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [440478391] [2020-10-28 17:43:35,504 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:43:35,504 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-28 17:43:35,504 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999060995] [2020-10-28 17:43:35,505 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 17:43:35,505 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:43:35,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 17:43:35,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-28 17:43:35,505 INFO L87 Difference]: Start difference. First operand 6062 states and 7662 transitions. Second operand 11 states. [2020-10-28 17:43:35,711 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-28 17:43:35,885 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-28 17:43:36,889 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 109 [2020-10-28 17:43:38,123 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-28 17:43:39,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:43:39,169 INFO L93 Difference]: Finished difference Result 13632 states and 17321 transitions. [2020-10-28 17:43:39,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-28 17:43:39,169 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 110 [2020-10-28 17:43:39,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:43:39,199 INFO L225 Difference]: With dead ends: 13632 [2020-10-28 17:43:39,199 INFO L226 Difference]: Without dead ends: 8376 [2020-10-28 17:43:39,211 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=197, Invalid=733, Unknown=0, NotChecked=0, Total=930 [2020-10-28 17:43:39,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8376 states. [2020-10-28 17:43:40,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8376 to 8367. [2020-10-28 17:43:40,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8367 states. [2020-10-28 17:43:40,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8367 states to 8367 states and 10505 transitions. [2020-10-28 17:43:40,056 INFO L78 Accepts]: Start accepts. Automaton has 8367 states and 10505 transitions. Word has length 110 [2020-10-28 17:43:40,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:43:40,056 INFO L481 AbstractCegarLoop]: Abstraction has 8367 states and 10505 transitions. [2020-10-28 17:43:40,056 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 17:43:40,056 INFO L276 IsEmpty]: Start isEmpty. Operand 8367 states and 10505 transitions. [2020-10-28 17:43:40,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-28 17:43:40,058 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:43:40,058 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:43:40,059 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 17:43:40,059 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:43:40,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:43:40,059 INFO L82 PathProgramCache]: Analyzing trace with hash 1529784856, now seen corresponding path program 1 times [2020-10-28 17:43:40,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:43:40,059 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1924030637] [2020-10-28 17:43:40,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:43:40,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:40,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:40,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:40,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:40,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:45,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:45,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-28 17:43:45,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:43:45,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 17:43:45,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:45,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:45,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 17:43:45,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:43:45,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-28 17:43:45,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:45,277 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-28 17:43:45,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:43:45,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:45,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:45,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:45,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:43:45,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:45,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:43:45,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:45,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:45,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:43:45,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:43:45,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:43:45,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:45,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:43:45,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:45,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:45,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:45,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 17:43:45,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:45,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 17:43:45,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:45,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:45,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:43:45,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:43:45,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-28 17:43:45,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:45,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-28 17:43:45,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:45,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:45,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:45,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:43:45,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:45,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:43:45,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:45,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:45,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:43:45,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:43:45,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:43:45,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:45,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-28 17:43:45,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:45,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:45,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:45,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:43:45,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:45,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:43:45,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:45,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:45,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:43:45,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:43:45,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:43:45,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:45,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-28 17:43:45,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:45,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:45,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:45,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:43:45,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:45,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 17:43:45,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:45,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:45,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 17:43:45,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:43:45,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:43:45,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:45,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-28 17:43:45,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:45,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:45,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:45,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:43:45,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:45,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:43:45,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:45,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:45,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:43:45,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:43:45,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:43:45,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:45,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-28 17:43:45,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:45,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:45,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:45,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:43:45,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:45,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:43:45,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:45,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:45,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:43:45,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:43:45,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:43:45,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:45,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-28 17:43:45,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:45,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:45,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:45,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:43:45,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:45,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:43:45,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:45,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:45,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:43:45,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:43:45,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:43:45,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:45,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-28 17:43:45,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:45,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:45,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:45,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:43:45,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:45,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:43:45,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:45,594 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:45,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:43:45,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:43:45,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:43:45,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:45,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-28 17:43:45,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:45,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:45,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:45,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:43:45,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:45,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:43:45,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:45,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:45,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:43:45,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:43:45,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:43:45,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:45,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-28 17:43:45,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:45,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:45,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:45,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:43:45,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:45,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:43:45,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:45,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:45,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 17:43:45,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:43:45,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 17:43:45,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:45,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-28 17:43:45,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:45,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:45,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:45,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 17:43:45,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:45,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:43:45,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:45,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:45,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:43:45,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-28 17:43:45,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:43:45,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:45,709 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-28 17:43:45,709 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1924030637] [2020-10-28 17:43:45,710 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:43:45,710 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-28 17:43:45,710 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688974384] [2020-10-28 17:43:45,711 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-28 17:43:45,711 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:43:45,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-28 17:43:45,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2020-10-28 17:43:45,712 INFO L87 Difference]: Start difference. First operand 8367 states and 10505 transitions. Second operand 18 states. [2020-10-28 17:43:46,090 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 114 [2020-10-28 17:43:46,297 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-28 17:43:46,763 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 116 [2020-10-28 17:43:47,468 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 118 [2020-10-28 17:43:47,626 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 53 [2020-10-28 17:43:48,162 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 118 [2020-10-28 17:43:48,358 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2020-10-28 17:43:48,518 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-10-28 17:43:48,931 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 118 [2020-10-28 17:43:49,833 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-10-28 17:43:50,813 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-10-28 17:43:52,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:43:52,669 INFO L93 Difference]: Finished difference Result 28192 states and 35420 transitions. [2020-10-28 17:43:52,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-28 17:43:52,670 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 111 [2020-10-28 17:43:52,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:43:52,752 INFO L225 Difference]: With dead ends: 28192 [2020-10-28 17:43:52,753 INFO L226 Difference]: Without dead ends: 22540 [2020-10-28 17:43:52,775 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 467 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=466, Invalid=1886, Unknown=0, NotChecked=0, Total=2352 [2020-10-28 17:43:52,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22540 states. [2020-10-28 17:43:54,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22540 to 21829. [2020-10-28 17:43:54,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21829 states. [2020-10-28 17:43:54,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21829 states to 21829 states and 27390 transitions. [2020-10-28 17:43:54,911 INFO L78 Accepts]: Start accepts. Automaton has 21829 states and 27390 transitions. Word has length 111 [2020-10-28 17:43:54,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:43:54,912 INFO L481 AbstractCegarLoop]: Abstraction has 21829 states and 27390 transitions. [2020-10-28 17:43:54,912 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-28 17:43:54,912 INFO L276 IsEmpty]: Start isEmpty. Operand 21829 states and 27390 transitions. [2020-10-28 17:43:54,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-28 17:43:54,915 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:43:54,916 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:43:54,916 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 17:43:54,916 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:43:54,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:43:54,917 INFO L82 PathProgramCache]: Analyzing trace with hash 37726348, now seen corresponding path program 1 times [2020-10-28 17:43:54,917 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:43:54,917 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [556728188] [2020-10-28 17:43:54,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:43:54,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:54,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:55,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:55,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:55,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:59,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:59,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-28 17:43:59,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:43:59,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-28 17:43:59,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:59,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:59,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 17:43:59,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:43:59,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-28 17:43:59,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:00,153 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-28 17:44:00,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:44:00,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:00,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:00,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:00,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:44:00,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:00,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:44:00,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:00,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:00,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:44:00,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:44:00,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:44:00,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:00,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:44:00,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:00,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:00,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:00,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 17:44:00,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:00,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 17:44:00,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:00,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:00,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:44:00,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:44:00,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-28 17:44:00,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:00,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-28 17:44:00,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:00,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:00,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:00,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:44:00,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:00,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:44:00,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:00,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:00,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:44:00,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:44:00,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:44:00,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:00,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-28 17:44:00,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:00,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:00,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:00,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:44:00,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:00,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:44:00,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:00,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:00,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:44:00,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:44:00,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:44:00,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:00,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-28 17:44:00,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:00,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:00,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:00,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:44:00,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:00,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 17:44:00,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:00,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:00,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 17:44:00,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:44:00,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:44:00,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:00,478 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 30 [2020-10-28 17:44:00,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-28 17:44:00,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:00,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:00,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:00,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:44:00,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:00,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:44:00,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:00,550 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:00,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:44:00,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:44:00,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:44:00,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:00,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-28 17:44:00,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:00,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:00,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:00,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:44:00,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:00,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:44:00,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:00,557 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:00,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:44:00,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:44:00,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:44:00,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:00,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-28 17:44:00,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:00,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:00,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:00,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:44:00,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:00,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:44:00,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:00,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:00,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:44:00,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:44:00,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:44:00,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:00,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-28 17:44:00,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:00,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:00,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:00,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:44:00,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:00,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:44:00,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:00,570 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:00,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:44:00,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:44:00,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:44:00,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:00,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-28 17:44:00,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:00,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:00,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:00,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:44:00,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:00,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:44:00,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:00,577 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:00,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:44:00,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:44:00,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:44:00,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:00,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-28 17:44:00,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:00,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:00,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:00,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:44:00,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:00,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:44:00,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:00,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:00,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 17:44:00,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:44:00,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:44:00,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:00,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-28 17:44:00,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:00,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:00,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:00,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 17:44:00,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:00,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:44:00,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:00,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:00,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:44:00,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-28 17:44:00,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:44:00,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:00,666 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-28 17:44:00,666 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [556728188] [2020-10-28 17:44:00,667 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:44:00,667 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-28 17:44:00,667 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722043838] [2020-10-28 17:44:00,667 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-28 17:44:00,667 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:44:00,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-28 17:44:00,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2020-10-28 17:44:00,668 INFO L87 Difference]: Start difference. First operand 21829 states and 27390 transitions. Second operand 15 states. [2020-10-28 17:44:00,889 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2020-10-28 17:44:01,257 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-28 17:44:01,831 WARN L193 SmtUtils]: Spent 415.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 131 [2020-10-28 17:44:02,175 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-28 17:44:02,579 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-28 17:44:03,399 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-10-28 17:44:04,302 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-28 17:44:06,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:44:06,893 INFO L93 Difference]: Finished difference Result 45041 states and 56373 transitions. [2020-10-28 17:44:06,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-28 17:44:06,894 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 111 [2020-10-28 17:44:06,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:44:06,967 INFO L225 Difference]: With dead ends: 45041 [2020-10-28 17:44:06,967 INFO L226 Difference]: Without dead ends: 23254 [2020-10-28 17:44:07,002 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 417 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=355, Invalid=1451, Unknown=0, NotChecked=0, Total=1806 [2020-10-28 17:44:07,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23254 states. [2020-10-28 17:44:09,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23254 to 22402. [2020-10-28 17:44:09,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22402 states. [2020-10-28 17:44:09,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22402 states to 22402 states and 27963 transitions. [2020-10-28 17:44:09,415 INFO L78 Accepts]: Start accepts. Automaton has 22402 states and 27963 transitions. Word has length 111 [2020-10-28 17:44:09,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:44:09,416 INFO L481 AbstractCegarLoop]: Abstraction has 22402 states and 27963 transitions. [2020-10-28 17:44:09,416 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-28 17:44:09,416 INFO L276 IsEmpty]: Start isEmpty. Operand 22402 states and 27963 transitions. [2020-10-28 17:44:09,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-28 17:44:09,418 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:44:09,419 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:44:09,419 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-28 17:44:09,419 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:44:09,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:44:09,419 INFO L82 PathProgramCache]: Analyzing trace with hash 797817430, now seen corresponding path program 1 times [2020-10-28 17:44:09,420 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:44:09,420 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1393284635] [2020-10-28 17:44:09,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:44:09,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:09,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:09,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:09,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:09,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:10,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:10,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:11,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:11,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:11,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:11,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:14,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:14,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-28 17:44:14,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-28 17:44:14,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 17:44:14,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:14,448 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:14,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 17:44:14,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:44:14,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-28 17:44:14,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:14,628 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-28 17:44:14,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:44:14,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:14,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:14,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:14,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:44:14,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:14,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:44:14,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:14,639 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:14,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:44:14,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:44:14,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:44:14,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:14,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:44:14,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:14,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:14,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:14,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 17:44:14,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:14,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:44:14,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:14,650 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:14,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:44:14,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:44:14,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-28 17:44:14,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:14,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-28 17:44:14,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:14,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:14,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:14,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:44:14,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:14,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:44:14,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:14,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:14,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:44:14,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:44:14,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:44:14,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:14,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-28 17:44:14,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:14,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:14,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:14,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:44:14,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:14,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 17:44:14,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:14,697 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:14,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 17:44:14,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:44:14,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:44:14,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:14,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-28 17:44:14,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:14,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:14,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:14,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:44:14,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:14,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:44:14,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:14,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:14,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:44:14,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:44:14,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:44:14,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:14,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-28 17:44:14,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:14,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:14,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:14,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:44:14,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:14,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:44:14,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:14,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:14,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:44:14,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:44:14,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:44:14,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:14,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-28 17:44:14,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:14,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:14,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:14,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:44:14,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:14,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:44:14,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:14,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:14,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:44:14,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:44:14,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:44:14,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:14,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-28 17:44:14,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:14,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:14,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:14,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:44:14,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:14,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:44:14,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:14,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:14,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:44:14,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:44:14,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:44:14,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:14,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-28 17:44:14,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:14,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:14,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:14,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:44:14,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:14,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:44:14,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:14,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:14,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:44:14,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:44:14,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:44:14,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:14,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-28 17:44:14,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:14,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:14,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:14,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:44:14,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:14,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:44:14,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:14,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:14,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 17:44:14,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:44:14,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:44:14,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:14,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-28 17:44:14,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:14,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:14,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:14,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:44:14,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:14,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:44:14,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:14,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:14,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:44:14,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-28 17:44:14,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:44:14,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:14,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-28 17:44:14,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:14,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:14,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:14,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 17:44:14,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:14,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:44:14,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:14,986 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:14,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:44:14,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-28 17:44:14,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:44:14,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:15,008 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-28 17:44:15,009 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1393284635] [2020-10-28 17:44:15,009 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:44:15,009 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-28 17:44:15,009 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109763985] [2020-10-28 17:44:15,010 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-28 17:44:15,010 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:44:15,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-28 17:44:15,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2020-10-28 17:44:15,011 INFO L87 Difference]: Start difference. First operand 22402 states and 27963 transitions. Second operand 15 states. [2020-10-28 17:44:15,236 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2020-10-28 17:44:15,626 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-28 17:44:15,972 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 116 [2020-10-28 17:44:16,359 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-28 17:44:16,938 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-28 17:44:17,535 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 118 [2020-10-28 17:44:17,992 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-10-28 17:44:19,130 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2020-10-28 17:44:24,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:44:24,240 INFO L93 Difference]: Finished difference Result 91521 states and 114992 transitions. [2020-10-28 17:44:24,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-10-28 17:44:24,240 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 111 [2020-10-28 17:44:24,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:44:24,474 INFO L225 Difference]: With dead ends: 91521 [2020-10-28 17:44:24,475 INFO L226 Difference]: Without dead ends: 69161 [2020-10-28 17:44:24,527 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 730 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=509, Invalid=2247, Unknown=0, NotChecked=0, Total=2756 [2020-10-28 17:44:24,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69161 states. [2020-10-28 17:44:29,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69161 to 58538. [2020-10-28 17:44:29,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58538 states. [2020-10-28 17:44:30,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58538 states to 58538 states and 74537 transitions. [2020-10-28 17:44:30,188 INFO L78 Accepts]: Start accepts. Automaton has 58538 states and 74537 transitions. Word has length 111 [2020-10-28 17:44:30,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:44:30,189 INFO L481 AbstractCegarLoop]: Abstraction has 58538 states and 74537 transitions. [2020-10-28 17:44:30,189 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-28 17:44:30,189 INFO L276 IsEmpty]: Start isEmpty. Operand 58538 states and 74537 transitions. [2020-10-28 17:44:30,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-28 17:44:30,193 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:44:30,193 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:44:30,193 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-28 17:44:30,194 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:44:30,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:44:30,194 INFO L82 PathProgramCache]: Analyzing trace with hash 1146533208, now seen corresponding path program 1 times [2020-10-28 17:44:30,194 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:44:30,194 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [577425933] [2020-10-28 17:44:30,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:44:30,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:30,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:30,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:30,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:30,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:30,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:31,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:31,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:35,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:35,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-28 17:44:35,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 17:44:35,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-28 17:44:35,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:35,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:35,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 17:44:35,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:44:35,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-28 17:44:35,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:35,390 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-28 17:44:35,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:44:35,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:35,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:35,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:35,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:44:35,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:35,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:44:35,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:35,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:35,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:44:35,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:44:35,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:44:35,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:35,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:44:35,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:35,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:35,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:35,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 17:44:35,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:35,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:44:35,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:35,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:35,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:44:35,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:44:35,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-28 17:44:35,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:35,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-28 17:44:35,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:35,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:35,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:35,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:44:35,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:35,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:44:35,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:35,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:35,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:44:35,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:44:35,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:44:35,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:35,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-28 17:44:35,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:35,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:35,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:35,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:44:35,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:35,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:44:35,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:35,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:35,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:44:35,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:44:35,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:44:35,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:35,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-28 17:44:35,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:35,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:35,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:35,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:44:35,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:35,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:44:35,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:35,484 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:35,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:44:35,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:44:35,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:44:35,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:35,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-28 17:44:35,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:35,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:35,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:35,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:44:35,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:35,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 17:44:35,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:35,530 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:35,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 17:44:35,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:44:35,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:44:35,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:35,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-28 17:44:35,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:35,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:35,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:35,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:44:35,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:35,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:44:35,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:35,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:35,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:44:35,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:44:35,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:44:35,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:35,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-28 17:44:35,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:35,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:35,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:35,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:44:35,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:35,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:44:35,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:35,626 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:35,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:44:35,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:44:35,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:44:35,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:35,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-28 17:44:35,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:35,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:35,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:35,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:44:35,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:35,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 17:44:35,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:35,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:35,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 17:44:35,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:44:35,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:44:35,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:35,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-28 17:44:35,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:35,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:35,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:35,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:44:35,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:35,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:44:35,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:35,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:35,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:44:35,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-28 17:44:35,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:44:35,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:35,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-28 17:44:35,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:35,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:35,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:35,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:44:35,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:35,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:44:35,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:35,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:35,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:44:35,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-28 17:44:35,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:44:35,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:35,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-28 17:44:35,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:35,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:35,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:35,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:44:35,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:35,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:44:35,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:35,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:35,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:44:35,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:44:35,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:44:35,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:35,734 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-28 17:44:35,735 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [577425933] [2020-10-28 17:44:35,735 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:44:35,735 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-28 17:44:35,735 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832609883] [2020-10-28 17:44:35,735 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-28 17:44:35,736 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:44:35,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-28 17:44:35,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2020-10-28 17:44:35,736 INFO L87 Difference]: Start difference. First operand 58538 states and 74537 transitions. Second operand 15 states. [2020-10-28 17:44:35,958 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2020-10-28 17:44:36,346 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-28 17:44:36,737 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2020-10-28 17:44:37,277 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-28 17:44:39,120 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-28 17:44:50,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:44:50,161 INFO L93 Difference]: Finished difference Result 202447 states and 259813 transitions. [2020-10-28 17:44:50,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-28 17:44:50,162 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 111 [2020-10-28 17:44:50,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:44:50,763 INFO L225 Difference]: With dead ends: 202447 [2020-10-28 17:44:50,763 INFO L226 Difference]: Without dead ends: 156737 [2020-10-28 17:44:50,897 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 352 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=308, Invalid=1332, Unknown=0, NotChecked=0, Total=1640 [2020-10-28 17:44:51,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156737 states. [2020-10-28 17:45:05,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156737 to 151757. [2020-10-28 17:45:05,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151757 states. [2020-10-28 17:45:05,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151757 states to 151757 states and 194918 transitions. [2020-10-28 17:45:05,969 INFO L78 Accepts]: Start accepts. Automaton has 151757 states and 194918 transitions. Word has length 111 [2020-10-28 17:45:05,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:45:05,969 INFO L481 AbstractCegarLoop]: Abstraction has 151757 states and 194918 transitions. [2020-10-28 17:45:05,969 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-28 17:45:05,969 INFO L276 IsEmpty]: Start isEmpty. Operand 151757 states and 194918 transitions. [2020-10-28 17:45:05,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-28 17:45:05,973 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:45:05,974 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:45:05,974 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-28 17:45:05,974 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:45:05,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:45:05,974 INFO L82 PathProgramCache]: Analyzing trace with hash -1816072168, now seen corresponding path program 1 times [2020-10-28 17:45:05,975 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:45:05,975 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1409332723] [2020-10-28 17:45:05,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:45:06,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:45:06,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:06,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:06,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:06,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:08,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:08,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:08,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:08,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:09,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:09,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:10,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:11,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:45:11,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-28 17:45:11,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-28 17:45:11,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-28 17:45:11,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:45:11,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:45:11,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 17:45:11,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-28 17:45:11,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-28 17:45:11,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:45:11,169 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-28 17:45:11,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:45:11,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:45:11,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:11,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:45:11,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:45:11,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:45:11,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:45:11,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:45:11,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:45:11,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:45:11,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:45:11,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:45:11,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:45:11,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:45:11,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:45:11,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:11,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:45:11,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 17:45:11,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:45:11,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:45:11,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:45:11,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:45:11,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:45:11,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:45:11,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:45:11,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:45:11,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-28 17:45:11,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:45:11,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:11,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:45:11,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:45:11,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:45:11,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:45:11,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:45:11,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:45:11,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:45:11,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:45:11,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:45:11,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:45:11,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-28 17:45:11,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:45:11,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:11,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:45:11,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:45:11,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:45:11,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:45:11,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:45:11,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:45:11,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:45:11,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:45:11,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:45:11,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:45:11,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-28 17:45:11,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:45:11,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:11,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:45:11,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:45:11,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:45:11,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:45:11,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:45:11,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:45:11,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 17:45:11,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:45:11,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:45:11,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:45:11,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-28 17:45:11,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:45:11,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:11,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:45:11,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:45:11,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:45:11,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:45:11,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:45:11,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:45:11,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:45:11,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:45:11,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:45:11,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:45:11,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-28 17:45:11,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:45:11,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:11,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:45:11,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:45:11,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:45:11,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:45:11,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:45:11,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:45:11,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:45:11,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:45:11,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:45:11,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:45:11,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-28 17:45:11,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:45:11,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:11,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:45:11,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:45:11,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:45:11,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:45:11,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:45:11,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:45:11,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:45:11,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:45:11,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:45:11,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:45:11,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-28 17:45:11,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:45:11,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:11,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:45:11,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:45:11,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:45:11,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:45:11,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:45:11,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:45:11,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:45:11,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:45:11,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:45:11,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:45:11,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-28 17:45:11,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:45:11,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:11,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:45:11,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:45:11,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:45:11,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:45:11,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:45:11,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:45:11,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:45:11,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-28 17:45:11,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:45:11,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:45:11,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-28 17:45:11,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:45:11,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:11,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:45:11,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:45:11,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:45:11,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:45:11,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:45:11,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:45:11,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:45:11,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 17:45:11,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:45:11,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:45:11,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-28 17:45:11,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:45:11,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:11,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:45:11,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:45:11,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:45:11,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:45:11,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:45:11,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:45:11,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:45:11,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:45:11,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:45:11,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:45:11,407 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-28 17:45:11,408 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1409332723] [2020-10-28 17:45:11,408 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:45:11,408 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-28 17:45:11,408 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862670146] [2020-10-28 17:45:11,408 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-28 17:45:11,408 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:45:11,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-28 17:45:11,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2020-10-28 17:45:11,409 INFO L87 Difference]: Start difference. First operand 151757 states and 194918 transitions. Second operand 13 states. [2020-10-28 17:45:11,594 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-28 17:45:11,791 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2020-10-28 17:45:12,044 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-10-28 17:45:12,288 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-28 17:45:12,559 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 109 [2020-10-28 17:45:12,998 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 108 [2020-10-28 17:45:14,386 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-10-28 17:45:14,540 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2020-10-28 17:45:15,791 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-28 17:45:15,944 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 112