/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=DEEPEST --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.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 22:55:13,496 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 22:55:13,501 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 22:55:13,557 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 22:55:13,558 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 22:55:13,564 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 22:55:13,567 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 22:55:13,571 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 22:55:13,574 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 22:55:13,580 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 22:55:13,581 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 22:55:13,583 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 22:55:13,583 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 22:55:13,586 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 22:55:13,590 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 22:55:13,593 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 22:55:13,594 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 22:55:13,598 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 22:55:13,606 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 22:55:13,612 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 22:55:13,615 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 22:55:13,617 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 22:55:13,618 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 22:55:13,621 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 22:55:13,632 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 22:55:13,632 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 22:55:13,633 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 22:55:13,634 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 22:55:13,638 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 22:55:13,639 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 22:55:13,639 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 22:55:13,640 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 22:55:13,641 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 22:55:13,642 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 22:55:13,644 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 22:55:13,644 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 22:55:13,645 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 22:55:13,646 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 22:55:13,646 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 22:55:13,647 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 22:55:13,648 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 22:55:13,655 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 [2020-10-27 22:55:13,703 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 22:55:13,704 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 22:55:13,709 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 22:55:13,709 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 22:55:13,709 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 22:55:13,710 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 22:55:13,710 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 22:55:13,710 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 22:55:13,710 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 22:55:13,710 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 22:55:13,712 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 22:55:13,712 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 22:55:13,712 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 22:55:13,712 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 22:55:13,713 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 22:55:13,713 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 22:55:13,713 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 22:55:13,713 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 22:55:13,713 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 22:55:13,714 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 22:55:13,714 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 22:55:13,714 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 22:55:13,714 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 22:55:13,715 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 22:55:13,715 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 22:55:13,715 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 22:55:13,715 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 22:55:13,715 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 22:55:13,716 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 22:55:13,716 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 22:55:14,094 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 22:55:14,143 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 22:55:14,146 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 22:55:14,147 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 22:55:14,148 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 22:55:14,149 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr.3.ufo.UNBOUNDED.pals.c [2020-10-27 22:55:14,230 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bf8ceb9ad/bcbfbba3f12846699bbfdfc3f5952e05/FLAG6ef3d99a1 [2020-10-27 22:55:14,868 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 22:55:14,869 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded/pals_lcr.3.ufo.UNBOUNDED.pals.c [2020-10-27 22:55:14,885 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bf8ceb9ad/bcbfbba3f12846699bbfdfc3f5952e05/FLAG6ef3d99a1 [2020-10-27 22:55:15,199 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bf8ceb9ad/bcbfbba3f12846699bbfdfc3f5952e05 [2020-10-27 22:55:15,206 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 22:55:15,214 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 22:55:15,219 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 22:55:15,219 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 22:55:15,223 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 22:55:15,224 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 10:55:15" (1/1) ... [2020-10-27 22:55:15,228 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75bde24c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:55:15, skipping insertion in model container [2020-10-27 22:55:15,229 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 10:55:15" (1/1) ... [2020-10-27 22:55:15,237 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 22:55:15,295 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 22:55:15,496 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 22:55:15,523 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 22:55:15,572 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 22:55:15,595 INFO L208 MainTranslator]: Completed translation [2020-10-27 22:55:15,595 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:55:15 WrapperNode [2020-10-27 22:55:15,595 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 22:55:15,597 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 22:55:15,597 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 22:55:15,597 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 22:55:15,613 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:55:15" (1/1) ... [2020-10-27 22:55:15,613 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:55:15" (1/1) ... [2020-10-27 22:55:15,631 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:55:15" (1/1) ... [2020-10-27 22:55:15,631 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:55:15" (1/1) ... [2020-10-27 22:55:15,646 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:55:15" (1/1) ... [2020-10-27 22:55:15,656 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:55:15" (1/1) ... [2020-10-27 22:55:15,659 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:55:15" (1/1) ... [2020-10-27 22:55:15,664 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 22:55:15,665 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 22:55:15,665 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 22:55:15,665 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 22:55:15,667 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:55:15" (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 [2020-10-27 22:55:15,763 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 22:55:15,763 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 22:55:15,764 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 22:55:15,764 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 22:55:15,764 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2020-10-27 22:55:15,765 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2020-10-27 22:55:15,765 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2020-10-27 22:55:15,766 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-10-27 22:55:15,766 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-27 22:55:15,767 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 22:55:15,768 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2020-10-27 22:55:15,768 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 22:55:15,768 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 22:55:15,768 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 22:55:15,768 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 22:55:15,771 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 22:55:15,771 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 22:55:15,772 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-27 22:55:15,772 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 22:55:15,772 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 22:55:15,772 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 22:55:15,772 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 22:55:15,772 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 22:55:15,773 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 22:55:15,773 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 22:55:15,773 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 22:55:15,773 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 22:55:15,773 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 22:55:15,773 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 22:55:15,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 22:55:15,774 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 22:55:15,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 22:55:15,774 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 22:55:15,774 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 22:55:16,585 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 22:55:16,585 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 22:55:16,587 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 10:55:16 BoogieIcfgContainer [2020-10-27 22:55:16,588 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 22:55:16,590 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 22:55:16,590 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 22:55:16,594 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 22:55:16,594 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 10:55:15" (1/3) ... [2020-10-27 22:55:16,595 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63723633 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 10:55:16, skipping insertion in model container [2020-10-27 22:55:16,595 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:55:15" (2/3) ... [2020-10-27 22:55:16,595 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63723633 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 10:55:16, skipping insertion in model container [2020-10-27 22:55:16,596 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 10:55:16" (3/3) ... [2020-10-27 22:55:16,597 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.ufo.UNBOUNDED.pals.c [2020-10-27 22:55:16,611 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 22:55:16,617 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 22:55:16,631 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 22:55:16,661 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 22:55:16,661 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 22:55:16,661 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 22:55:16,661 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 22:55:16,661 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 22:55:16,662 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 22:55:16,662 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 22:55:16,662 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 22:55:16,685 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states. [2020-10-27 22:55:16,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-27 22:55:16,696 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:55:16,697 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] [2020-10-27 22:55:16,697 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:55:16,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:55:16,705 INFO L82 PathProgramCache]: Analyzing trace with hash 1495902646, now seen corresponding path program 1 times [2020-10-27 22:55:16,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:55:16,715 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [916521008] [2020-10-27 22:55:16,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:55:16,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:17,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:17,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:17,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-27 22:55:17,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:17,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 360 [2020-10-27 22:55:17,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:17,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:55:17,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-27 22:55:17,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:55:17,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 22:55:17,652 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-27 22:55:17,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:55:17,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:17,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:17,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:17,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:55:17,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:17,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-27 22:55:17,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:17,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:55:17,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:17,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:55:17,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:17,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:55:17,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:17,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:17,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:17,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:55:17,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:17,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 22:55:17,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:17,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:55:17,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:17,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:55:17,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:17,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 22:55:17,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:17,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:17,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:17,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:55:17,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:17,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:55:17,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:17,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:55:17,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 22:55:17,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:55:17,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:17,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-27 22:55:17,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:17,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:17,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:17,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:55:17,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:17,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 22:55:17,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:17,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:55:17,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 22:55:17,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:55:17,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:55:17,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-27 22:55:17,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:17,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:17,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:17,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:55:17,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:17,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 22:55:17,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:17,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:55:17,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 22:55:17,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:55:17,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:55:17,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-27 22:55:17,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:17,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:17,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:17,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:55:17,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:17,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 22:55:17,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:17,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:55:17,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 22:55:17,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:55:17,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:17,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-27 22:55:17,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:17,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:17,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:17,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:55:17,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:17,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:55:17,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:17,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:55:17,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:55:17,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:55:17,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:17,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 22:55:17,974 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [916521008] [2020-10-27 22:55:17,976 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:55:17,976 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 22:55:17,977 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177134126] [2020-10-27 22:55:17,983 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 22:55:17,984 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:55:17,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 22:55:17,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-27 22:55:18,002 INFO L87 Difference]: Start difference. First operand 98 states. Second operand 6 states. [2020-10-27 22:55:18,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:55:18,648 INFO L93 Difference]: Finished difference Result 158 states and 224 transitions. [2020-10-27 22:55:18,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 22:55:18,651 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 54 [2020-10-27 22:55:18,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:55:18,664 INFO L225 Difference]: With dead ends: 158 [2020-10-27 22:55:18,664 INFO L226 Difference]: Without dead ends: 91 [2020-10-27 22:55:18,669 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-27 22:55:18,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-10-27 22:55:18,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 90. [2020-10-27 22:55:18,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-10-27 22:55:18,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 127 transitions. [2020-10-27 22:55:18,748 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 127 transitions. Word has length 54 [2020-10-27 22:55:18,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:55:18,749 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 127 transitions. [2020-10-27 22:55:18,749 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 22:55:18,749 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 127 transitions. [2020-10-27 22:55:18,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-27 22:55:18,756 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:55:18,756 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] [2020-10-27 22:55:18,756 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 22:55:18,757 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:55:18,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:55:18,757 INFO L82 PathProgramCache]: Analyzing trace with hash -349464520, now seen corresponding path program 1 times [2020-10-27 22:55:18,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:55:18,758 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1122286984] [2020-10-27 22:55:18,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:55:18,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:18,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:19,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:19,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-27 22:55:19,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:19,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 489 [2020-10-27 22:55:19,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:19,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 22:55:19,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 22:55:19,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:55:19,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:19,532 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-27 22:55:19,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:55:19,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:19,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:19,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:19,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:55:19,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:19,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 22:55:19,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:19,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:55:19,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:19,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:55:19,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:19,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:55:19,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:19,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:19,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:19,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:55:19,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:19,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 22:55:19,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:19,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:55:19,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:19,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:55:19,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:19,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 22:55:19,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:19,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:19,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:19,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:55:19,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:19,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 22:55:19,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:19,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:55:19,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:55:19,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:55:19,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:19,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-27 22:55:19,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:19,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:19,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:19,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:55:19,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:19,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 22:55:19,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:19,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:55:19,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 22:55:19,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:55:19,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:19,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-27 22:55:19,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:19,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:19,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:19,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:55:19,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:19,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:55:19,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:19,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:55:19,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 22:55:19,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:55:19,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:19,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-27 22:55:19,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:19,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:19,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:19,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:55:19,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:19,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:55:19,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:19,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:55:19,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 22:55:19,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:55:19,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:19,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-27 22:55:19,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:19,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:19,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:19,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:55:19,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:19,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:55:19,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:19,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:55:19,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:55:19,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:55:19,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:19,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 22:55:19,831 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1122286984] [2020-10-27 22:55:19,831 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:55:19,831 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-27 22:55:19,831 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365773080] [2020-10-27 22:55:19,833 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 22:55:19,833 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:55:19,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 22:55:19,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-27 22:55:19,835 INFO L87 Difference]: Start difference. First operand 90 states and 127 transitions. Second operand 12 states. [2020-10-27 22:55:20,127 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-27 22:55:20,361 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-27 22:55:20,676 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 22:55:20,860 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-27 22:55:21,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:55:21,894 INFO L93 Difference]: Finished difference Result 153 states and 212 transitions. [2020-10-27 22:55:21,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 22:55:21,902 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 54 [2020-10-27 22:55:21,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:55:21,905 INFO L225 Difference]: With dead ends: 153 [2020-10-27 22:55:21,905 INFO L226 Difference]: Without dead ends: 91 [2020-10-27 22:55:21,907 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2020-10-27 22:55:21,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-10-27 22:55:21,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 90. [2020-10-27 22:55:21,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-10-27 22:55:21,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 111 transitions. [2020-10-27 22:55:21,927 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 111 transitions. Word has length 54 [2020-10-27 22:55:21,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:55:21,927 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 111 transitions. [2020-10-27 22:55:21,928 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 22:55:21,928 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 111 transitions. [2020-10-27 22:55:21,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-27 22:55:21,930 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:55:21,930 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] [2020-10-27 22:55:21,931 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 22:55:21,931 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:55:21,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:55:21,931 INFO L82 PathProgramCache]: Analyzing trace with hash 829158538, now seen corresponding path program 1 times [2020-10-27 22:55:21,932 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:55:21,932 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [492063736] [2020-10-27 22:55:21,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:55:21,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:21,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:22,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:22,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:24,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:24,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-27 22:55:24,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 22:55:24,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2822 [2020-10-27 22:55:24,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:24,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:55:24,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-27 22:55:24,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-27 22:55:24,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:55:24,992 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-27 22:55:24,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:55:24,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:25,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:25,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:25,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:55:25,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:25,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 22:55:25,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:25,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:55:25,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:25,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:55:25,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:25,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:55:25,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:25,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:25,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:25,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 22:55:25,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:25,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 22:55:25,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:25,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:55:25,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:25,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 22:55:25,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:25,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 22:55:25,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:25,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:25,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:25,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:55:25,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:25,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:55:25,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:25,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:55:25,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:25,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:55:25,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:25,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-27 22:55:25,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:25,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:25,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:25,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:55:25,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:25,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 22:55:25,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:25,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:55:25,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:25,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:55:25,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:25,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-27 22:55:25,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:25,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:25,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:25,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:55:25,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:25,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 22:55:25,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:25,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:55:25,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:25,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:55:25,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:25,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-27 22:55:25,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:25,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:25,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:25,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:55:25,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:25,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 22:55:25,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:25,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:55:25,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:55:25,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 22:55:25,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:25,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-27 22:55:25,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:25,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:25,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:25,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:55:25,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:25,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:55:25,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:25,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:55:25,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:55:25,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:55:25,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:25,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 22:55:25,227 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [492063736] [2020-10-27 22:55:25,228 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:55:25,228 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 22:55:25,228 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679526312] [2020-10-27 22:55:25,229 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 22:55:25,229 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:55:25,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 22:55:25,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-27 22:55:25,230 INFO L87 Difference]: Start difference. First operand 90 states and 111 transitions. Second operand 9 states. [2020-10-27 22:55:25,393 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-27 22:55:26,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:55:26,457 INFO L93 Difference]: Finished difference Result 198 states and 259 transitions. [2020-10-27 22:55:26,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 22:55:26,459 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 69 [2020-10-27 22:55:26,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:55:26,468 INFO L225 Difference]: With dead ends: 198 [2020-10-27 22:55:26,469 INFO L226 Difference]: Without dead ends: 142 [2020-10-27 22:55:26,472 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2020-10-27 22:55:26,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-10-27 22:55:26,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 137. [2020-10-27 22:55:26,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-10-27 22:55:26,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 176 transitions. [2020-10-27 22:55:26,528 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 176 transitions. Word has length 69 [2020-10-27 22:55:26,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:55:26,531 INFO L481 AbstractCegarLoop]: Abstraction has 137 states and 176 transitions. [2020-10-27 22:55:26,531 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 22:55:26,531 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 176 transitions. [2020-10-27 22:55:26,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-27 22:55:26,536 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:55:26,536 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] [2020-10-27 22:55:26,537 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 22:55:26,537 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:55:26,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:55:26,539 INFO L82 PathProgramCache]: Analyzing trace with hash -1349026348, now seen corresponding path program 1 times [2020-10-27 22:55:26,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:55:26,540 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [367693527] [2020-10-27 22:55:26,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:55:26,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:26,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:26,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:27,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:27,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-27 22:55:27,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:55:27,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1206 [2020-10-27 22:55:27,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:27,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:55:27,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-27 22:55:27,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-27 22:55:27,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:27,995 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-27 22:55:27,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:55:28,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:28,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:28,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:28,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:55:28,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:28,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 22:55:28,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:28,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:55:28,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:28,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:55:28,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:28,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:55:28,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:28,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:28,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:28,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 22:55:28,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:28,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 22:55:28,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:28,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:55:28,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:28,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 22:55:28,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:28,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 22:55:28,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:28,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:28,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:28,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:55:28,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:28,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:55:28,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:28,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:55:28,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:28,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:55:28,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:28,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-27 22:55:28,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:28,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:28,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:28,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:55:28,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:28,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 22:55:28,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:28,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:55:28,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:28,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:55:28,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:55:28,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-27 22:55:28,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:28,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:28,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:28,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:55:28,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:28,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 22:55:28,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:28,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:55:28,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:55:28,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 22:55:28,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:28,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-27 22:55:28,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:28,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:28,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:28,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:55:28,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:28,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 22:55:28,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:28,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:55:28,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 22:55:28,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:55:28,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:28,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-27 22:55:28,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:28,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:28,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:28,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:55:28,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:28,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:55:28,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:28,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:55:28,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:55:28,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:55:28,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:28,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 22:55:28,254 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [367693527] [2020-10-27 22:55:28,254 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:55:28,254 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 22:55:28,255 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834304311] [2020-10-27 22:55:28,255 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 22:55:28,255 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:55:28,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 22:55:28,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-27 22:55:28,257 INFO L87 Difference]: Start difference. First operand 137 states and 176 transitions. Second operand 9 states. [2020-10-27 22:55:28,427 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-27 22:55:29,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:55:29,498 INFO L93 Difference]: Finished difference Result 335 states and 448 transitions. [2020-10-27 22:55:29,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 22:55:29,498 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 69 [2020-10-27 22:55:29,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:55:29,503 INFO L225 Difference]: With dead ends: 335 [2020-10-27 22:55:29,503 INFO L226 Difference]: Without dead ends: 232 [2020-10-27 22:55:29,505 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-10-27 22:55:29,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2020-10-27 22:55:29,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 225. [2020-10-27 22:55:29,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2020-10-27 22:55:29,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 296 transitions. [2020-10-27 22:55:29,553 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 296 transitions. Word has length 69 [2020-10-27 22:55:29,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:55:29,553 INFO L481 AbstractCegarLoop]: Abstraction has 225 states and 296 transitions. [2020-10-27 22:55:29,553 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 22:55:29,553 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 296 transitions. [2020-10-27 22:55:29,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-27 22:55:29,555 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:55:29,555 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] [2020-10-27 22:55:29,555 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 22:55:29,555 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:55:29,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:55:29,557 INFO L82 PathProgramCache]: Analyzing trace with hash -2094609078, now seen corresponding path program 1 times [2020-10-27 22:55:29,558 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:55:29,558 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1735337217] [2020-10-27 22:55:29,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:55:29,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:29,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:30,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:30,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-27 22:55:30,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:30,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 550 [2020-10-27 22:55:30,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:30,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 22:55:30,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-27 22:55:30,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-27 22:55:30,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:30,314 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-27 22:55:30,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:55:30,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:30,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:30,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:30,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:55:30,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:30,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 22:55:30,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:30,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:55:30,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:30,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:55:30,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:30,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:55:30,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:30,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:30,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:30,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 22:55:30,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:30,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-27 22:55:30,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:30,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:55:30,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:30,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 22:55:30,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:30,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 22:55:30,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:30,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:30,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:30,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:55:30,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:30,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:55:30,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:30,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:55:30,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:30,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:55:30,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:30,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-27 22:55:30,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:30,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:30,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:30,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:55:30,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:30,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 22:55:30,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:30,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:55:30,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:55:30,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 22:55:30,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:30,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-27 22:55:30,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:30,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:30,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:30,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:55:30,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:30,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 22:55:30,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:30,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:55:30,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:55:30,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 22:55:30,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:30,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-27 22:55:30,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:30,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:30,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:30,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:55:30,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:30,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 22:55:30,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:30,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:55:30,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:55:30,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 22:55:30,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:30,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-27 22:55:30,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:30,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:30,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:30,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:55:30,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:30,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:55:30,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:30,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:55:30,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 22:55:30,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 22:55:30,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:30,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 22:55:30,684 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1735337217] [2020-10-27 22:55:30,684 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:55:30,684 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-27 22:55:30,686 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422042332] [2020-10-27 22:55:30,688 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 22:55:30,688 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:55:30,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 22:55:30,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2020-10-27 22:55:30,690 INFO L87 Difference]: Start difference. First operand 225 states and 296 transitions. Second operand 13 states. [2020-10-27 22:55:30,880 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-27 22:55:31,048 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-10-27 22:55:31,221 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 22:55:32,055 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 22:55:33,212 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-27 22:55:33,350 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-27 22:55:33,549 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-27 22:55:35,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:55:35,379 INFO L93 Difference]: Finished difference Result 1797 states and 2480 transitions. [2020-10-27 22:55:35,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2020-10-27 22:55:35,379 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 69 [2020-10-27 22:55:35,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:55:35,393 INFO L225 Difference]: With dead ends: 1797 [2020-10-27 22:55:35,393 INFO L226 Difference]: Without dead ends: 1606 [2020-10-27 22:55:35,396 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 858 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=646, Invalid=2324, Unknown=0, NotChecked=0, Total=2970 [2020-10-27 22:55:35,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1606 states. [2020-10-27 22:55:35,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1606 to 1553. [2020-10-27 22:55:35,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1553 states. [2020-10-27 22:55:35,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1553 states to 1553 states and 2116 transitions. [2020-10-27 22:55:35,596 INFO L78 Accepts]: Start accepts. Automaton has 1553 states and 2116 transitions. Word has length 69 [2020-10-27 22:55:35,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:55:35,597 INFO L481 AbstractCegarLoop]: Abstraction has 1553 states and 2116 transitions. [2020-10-27 22:55:35,597 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 22:55:35,597 INFO L276 IsEmpty]: Start isEmpty. Operand 1553 states and 2116 transitions. [2020-10-27 22:55:35,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-27 22:55:35,599 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:55:35,599 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] [2020-10-27 22:55:35,599 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 22:55:35,600 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:55:35,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:55:35,600 INFO L82 PathProgramCache]: Analyzing trace with hash 465737874, now seen corresponding path program 1 times [2020-10-27 22:55:35,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:55:35,601 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [200837776] [2020-10-27 22:55:35,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:55:35,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:35,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:36,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:36,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-27 22:55:36,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:36,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 385 [2020-10-27 22:55:36,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:36,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 22:55:36,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-27 22:55:36,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-27 22:55:36,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:36,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:55:36,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:36,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:36,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:36,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:55:36,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:36,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 22:55:36,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:36,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:55:36,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:36,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:55:36,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:36,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:55:36,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:36,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:36,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:36,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 22:55:36,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:36,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-27 22:55:36,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:36,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:55:36,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:36,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 22:55:36,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:36,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 22:55:36,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:36,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:36,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:36,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:55:36,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:36,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:55:36,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:36,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:55:36,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:36,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:55:36,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:36,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-27 22:55:36,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:36,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:36,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:36,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:55:36,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:36,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 22:55:36,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:36,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:55:36,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:55:36,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 22:55:36,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:36,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-27 22:55:36,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:36,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:36,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:36,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:55:36,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:36,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 22:55:36,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:36,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:55:36,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:55:36,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 22:55:36,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:36,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-27 22:55:36,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:36,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:36,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:36,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:55:36,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:36,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 22:55:36,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:36,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:55:36,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:55:36,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 22:55:36,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:36,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-27 22:55:36,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:36,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:36,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:36,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 22:55:36,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:36,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:55:36,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:36,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:55:36,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 22:55:36,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 22:55:36,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:36,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 22:55:36,629 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [200837776] [2020-10-27 22:55:36,631 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:55:36,631 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-27 22:55:36,631 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672088143] [2020-10-27 22:55:36,632 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 22:55:36,632 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:55:36,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 22:55:36,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2020-10-27 22:55:36,634 INFO L87 Difference]: Start difference. First operand 1553 states and 2116 transitions. Second operand 13 states. [2020-10-27 22:55:36,801 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-27 22:55:36,957 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-10-27 22:55:37,101 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 22:55:37,641 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-27 22:55:38,776 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-27 22:55:39,393 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-27 22:55:41,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:55:41,732 INFO L93 Difference]: Finished difference Result 4297 states and 6285 transitions. [2020-10-27 22:55:41,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-10-27 22:55:41,733 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 71 [2020-10-27 22:55:41,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:55:41,765 INFO L225 Difference]: With dead ends: 4297 [2020-10-27 22:55:41,766 INFO L226 Difference]: Without dead ends: 2778 [2020-10-27 22:55:41,777 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 860 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=655, Invalid=2101, Unknown=0, NotChecked=0, Total=2756 [2020-10-27 22:55:41,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2778 states. [2020-10-27 22:55:42,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2778 to 2135. [2020-10-27 22:55:42,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2135 states. [2020-10-27 22:55:42,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2135 states to 2135 states and 2920 transitions. [2020-10-27 22:55:42,069 INFO L78 Accepts]: Start accepts. Automaton has 2135 states and 2920 transitions. Word has length 71 [2020-10-27 22:55:42,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:55:42,070 INFO L481 AbstractCegarLoop]: Abstraction has 2135 states and 2920 transitions. [2020-10-27 22:55:42,070 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 22:55:42,070 INFO L276 IsEmpty]: Start isEmpty. Operand 2135 states and 2920 transitions. [2020-10-27 22:55:42,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-27 22:55:42,071 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:55:42,072 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] [2020-10-27 22:55:42,072 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 22:55:42,072 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:55:42,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:55:42,073 INFO L82 PathProgramCache]: Analyzing trace with hash 1729808346, now seen corresponding path program 1 times [2020-10-27 22:55:42,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:55:42,073 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1043164513] [2020-10-27 22:55:42,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:55:42,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:42,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:42,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:42,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:42,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:42,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-27 22:55:42,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 22:55:42,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 603 [2020-10-27 22:55:42,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:42,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 22:55:42,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-27 22:55:42,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:55:42,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:42,992 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-27 22:55:42,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:55:42,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:43,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:43,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:43,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:55:43,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:43,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 22:55:43,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:43,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:55:43,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:43,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:55:43,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:55:43,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:55:43,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:43,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:43,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:43,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 22:55:43,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:43,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:55:43,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:43,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:55:43,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:43,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:55:43,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:55:43,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 22:55:43,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:43,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:43,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:43,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:55:43,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:43,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 22:55:43,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:43,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:55:43,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:43,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:55:43,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:55:43,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-27 22:55:43,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:43,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:43,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:43,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:55:43,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:43,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:55:43,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:43,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:55:43,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:43,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:55:43,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:43,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-27 22:55:43,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:43,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:43,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:43,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:55:43,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:43,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:55:43,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:43,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:55:43,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:43,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:55:43,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:55:43,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-27 22:55:43,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:43,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:43,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:43,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:55:43,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:43,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:55:43,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:43,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:55:43,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:43,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:55:43,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:43,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-27 22:55:43,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:43,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:43,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:43,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:43,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 22:55:43,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:55:43,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 22:55:43,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:43,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:55:43,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-27 22:55:43,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 22:55:43,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:43,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 22:55:43,211 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1043164513] [2020-10-27 22:55:43,212 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:55:43,212 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 22:55:43,212 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178862481] [2020-10-27 22:55:43,212 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 22:55:43,213 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:55:43,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 22:55:43,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-27 22:55:43,214 INFO L87 Difference]: Start difference. First operand 2135 states and 2920 transitions. Second operand 11 states. [2020-10-27 22:55:43,930 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-27 22:55:45,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:55:45,158 INFO L93 Difference]: Finished difference Result 6017 states and 8336 transitions. [2020-10-27 22:55:45,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 22:55:45,159 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 71 [2020-10-27 22:55:45,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:55:45,185 INFO L225 Difference]: With dead ends: 6017 [2020-10-27 22:55:45,186 INFO L226 Difference]: Without dead ends: 3916 [2020-10-27 22:55:45,195 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-10-27 22:55:45,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3916 states. [2020-10-27 22:55:45,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3916 to 3789. [2020-10-27 22:55:45,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3789 states. [2020-10-27 22:55:45,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3789 states to 3789 states and 5140 transitions. [2020-10-27 22:55:45,666 INFO L78 Accepts]: Start accepts. Automaton has 3789 states and 5140 transitions. Word has length 71 [2020-10-27 22:55:45,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:55:45,667 INFO L481 AbstractCegarLoop]: Abstraction has 3789 states and 5140 transitions. [2020-10-27 22:55:45,667 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 22:55:45,667 INFO L276 IsEmpty]: Start isEmpty. Operand 3789 states and 5140 transitions. [2020-10-27 22:55:45,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-27 22:55:45,668 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:55:45,669 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] [2020-10-27 22:55:45,669 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 22:55:45,669 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:55:45,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:55:45,670 INFO L82 PathProgramCache]: Analyzing trace with hash 1485135809, now seen corresponding path program 1 times [2020-10-27 22:55:45,670 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:55:45,670 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1583702792] [2020-10-27 22:55:45,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:55:45,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:45,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:46,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:46,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-27 22:55:46,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:46,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 331 [2020-10-27 22:55:46,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:46,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 22:55:46,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-27 22:55:46,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:55:46,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:46,249 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-27 22:55:46,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:55:46,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:46,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:46,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:46,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:55:46,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:46,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 22:55:46,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:46,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:55:46,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:46,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:55:46,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:46,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:55:46,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:46,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:46,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:46,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 22:55:46,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:46,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:55:46,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:46,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:55:46,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:46,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:55:46,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:46,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 22:55:46,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:46,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:46,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:46,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:55:46,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:46,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 22:55:46,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:46,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:55:46,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:46,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:55:46,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:46,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-27 22:55:46,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:46,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:46,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:46,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:55:46,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:46,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:55:46,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:46,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:55:46,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:46,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:55:46,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:46,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-27 22:55:46,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:46,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:46,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:46,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:55:46,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:46,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:55:46,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:46,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:55:46,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:46,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:55:46,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:46,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-27 22:55:46,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:46,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:46,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:46,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:55:46,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:46,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:55:46,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:46,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:55:46,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:46,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:55:46,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:46,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-27 22:55:46,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:46,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:46,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:46,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:55:46,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:46,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 22:55:46,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:46,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:55:46,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:46,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 22:55:46,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:46,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 22:55:46,449 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1583702792] [2020-10-27 22:55:46,449 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:55:46,449 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-27 22:55:46,449 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330798676] [2020-10-27 22:55:46,450 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 22:55:46,450 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:55:46,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 22:55:46,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-27 22:55:46,451 INFO L87 Difference]: Start difference. First operand 3789 states and 5140 transitions. Second operand 12 states. [2020-10-27 22:55:47,369 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 22:55:47,524 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-27 22:55:47,732 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-27 22:55:47,889 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2020-10-27 22:55:48,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:55:48,576 INFO L93 Difference]: Finished difference Result 4229 states and 5957 transitions. [2020-10-27 22:55:48,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 22:55:48,577 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 72 [2020-10-27 22:55:48,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:55:48,608 INFO L225 Difference]: With dead ends: 4229 [2020-10-27 22:55:48,608 INFO L226 Difference]: Without dead ends: 4226 [2020-10-27 22:55:48,611 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2020-10-27 22:55:48,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4226 states. [2020-10-27 22:55:49,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4226 to 3897. [2020-10-27 22:55:49,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3897 states. [2020-10-27 22:55:49,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3897 states to 3897 states and 5248 transitions. [2020-10-27 22:55:49,072 INFO L78 Accepts]: Start accepts. Automaton has 3897 states and 5248 transitions. Word has length 72 [2020-10-27 22:55:49,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:55:49,073 INFO L481 AbstractCegarLoop]: Abstraction has 3897 states and 5248 transitions. [2020-10-27 22:55:49,073 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 22:55:49,073 INFO L276 IsEmpty]: Start isEmpty. Operand 3897 states and 5248 transitions. [2020-10-27 22:55:49,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-27 22:55:49,074 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:55:49,074 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] [2020-10-27 22:55:49,074 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 22:55:49,074 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:55:49,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:55:49,075 INFO L82 PathProgramCache]: Analyzing trace with hash 1954569570, now seen corresponding path program 1 times [2020-10-27 22:55:49,075 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:55:49,075 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2011259893] [2020-10-27 22:55:49,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:55:49,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:49,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:49,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:49,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:49,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-27 22:55:49,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:55:49,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 255 [2020-10-27 22:55:49,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:49,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:55:49,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 22:55:49,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-27 22:55:49,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:49,606 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-27 22:55:49,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:55:49,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:49,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:49,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:49,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:55:49,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:49,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 22:55:49,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:49,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:55:49,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:49,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:55:49,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:49,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:55:49,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:49,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:49,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:49,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 22:55:49,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:49,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 22:55:49,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:49,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:55:49,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:49,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 22:55:49,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:55:49,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 22:55:49,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:49,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:49,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:49,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:55:49,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:49,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:55:49,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:49,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:55:49,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:49,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:55:49,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:49,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-27 22:55:49,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:49,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:49,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:49,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:55:49,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:49,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 22:55:49,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:49,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:55:49,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:55:49,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 22:55:49,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:49,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-27 22:55:49,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:49,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:49,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:49,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:55:49,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:49,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 22:55:49,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:49,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:55:49,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:49,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:55:49,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:55:49,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-27 22:55:49,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:49,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:49,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:49,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:55:49,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:49,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 22:55:49,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:49,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:55:49,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:49,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:55:49,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:49,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-27 22:55:49,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:49,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:49,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:49,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:49,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:55:49,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:55:49,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 22:55:49,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:49,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:55:49,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 22:55:49,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:55:49,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:49,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 22:55:49,897 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2011259893] [2020-10-27 22:55:49,897 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:55:49,897 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 22:55:49,898 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781671707] [2020-10-27 22:55:49,898 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 22:55:49,898 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:55:49,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 22:55:49,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-27 22:55:49,900 INFO L87 Difference]: Start difference. First operand 3897 states and 5248 transitions. Second operand 9 states. [2020-10-27 22:55:50,093 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-27 22:55:50,970 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-27 22:55:52,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:55:52,293 INFO L93 Difference]: Finished difference Result 9174 states and 12430 transitions. [2020-10-27 22:55:52,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-27 22:55:52,293 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 72 [2020-10-27 22:55:52,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:55:52,330 INFO L225 Difference]: With dead ends: 9174 [2020-10-27 22:55:52,330 INFO L226 Difference]: Without dead ends: 5311 [2020-10-27 22:55:52,345 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=118, Invalid=302, Unknown=0, NotChecked=0, Total=420 [2020-10-27 22:55:52,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5311 states. [2020-10-27 22:55:52,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5311 to 5153. [2020-10-27 22:55:52,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5153 states. [2020-10-27 22:55:52,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5153 states to 5153 states and 6868 transitions. [2020-10-27 22:55:52,987 INFO L78 Accepts]: Start accepts. Automaton has 5153 states and 6868 transitions. Word has length 72 [2020-10-27 22:55:52,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:55:52,988 INFO L481 AbstractCegarLoop]: Abstraction has 5153 states and 6868 transitions. [2020-10-27 22:55:52,988 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 22:55:52,988 INFO L276 IsEmpty]: Start isEmpty. Operand 5153 states and 6868 transitions. [2020-10-27 22:55:52,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-27 22:55:52,989 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:55:52,989 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:55:52,989 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 22:55:52,990 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:55:52,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:55:52,990 INFO L82 PathProgramCache]: Analyzing trace with hash -309812069, now seen corresponding path program 1 times [2020-10-27 22:55:52,990 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:55:52,990 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [72204364] [2020-10-27 22:55:52,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:55:53,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:53,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:53,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:53,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:53,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:57,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:57,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-27 22:55:57,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 22:55:57,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4966 [2020-10-27 22:55:57,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:57,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 22:55:57,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-27 22:55:57,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:55:57,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:58,118 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-27 22:55:58,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:55:58,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:58,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:58,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:58,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:55:58,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:58,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 22:55:58,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:58,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:55:58,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:58,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:55:58,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:58,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:55:58,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:58,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:58,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:58,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 22:55:58,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:58,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 22:55:58,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:58,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:55:58,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:58,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:55:58,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:58,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 22:55:58,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:58,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:58,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:58,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:55:58,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:58,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 22:55:58,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:58,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:55:58,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:58,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:55:58,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:58,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-27 22:55:58,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:58,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:58,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:58,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 22:55:58,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:58,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 22:55:58,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:58,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 22:55:58,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:55:58,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 22:55:58,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:58,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-27 22:55:58,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:58,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:58,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:58,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:55:58,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:58,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:55:58,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:58,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:55:58,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 22:55:58,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:55:58,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:58,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-27 22:55:58,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:58,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:58,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:58,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:55:58,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:58,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:55:58,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:58,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:55:58,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 22:55:58,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:55:58,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:58,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 22:55:58,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:58,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:58,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:58,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:55:58,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:58,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:55:58,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:58,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:55:58,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:55:58,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:55:58,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:58,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 22:55:58,315 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [72204364] [2020-10-27 22:55:58,315 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:55:58,315 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 22:55:58,316 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555000037] [2020-10-27 22:55:58,316 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 22:55:58,316 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:55:58,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 22:55:58,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-27 22:55:58,317 INFO L87 Difference]: Start difference. First operand 5153 states and 6868 transitions. Second operand 10 states. [2020-10-27 22:55:58,620 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2020-10-27 22:55:58,751 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 22:56:00,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:56:00,143 INFO L93 Difference]: Finished difference Result 10039 states and 13454 transitions. [2020-10-27 22:56:00,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 22:56:00,144 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 73 [2020-10-27 22:56:00,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:56:00,185 INFO L225 Difference]: With dead ends: 10039 [2020-10-27 22:56:00,185 INFO L226 Difference]: Without dead ends: 6096 [2020-10-27 22:56:00,200 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2020-10-27 22:56:00,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6096 states. [2020-10-27 22:56:00,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6096 to 5414. [2020-10-27 22:56:00,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5414 states. [2020-10-27 22:56:00,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5414 states to 5414 states and 7231 transitions. [2020-10-27 22:56:00,799 INFO L78 Accepts]: Start accepts. Automaton has 5414 states and 7231 transitions. Word has length 73 [2020-10-27 22:56:00,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:56:00,800 INFO L481 AbstractCegarLoop]: Abstraction has 5414 states and 7231 transitions. [2020-10-27 22:56:00,800 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 22:56:00,800 INFO L276 IsEmpty]: Start isEmpty. Operand 5414 states and 7231 transitions. [2020-10-27 22:56:00,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-27 22:56:00,801 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:56:00,801 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:56:00,801 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 22:56:00,802 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:56:00,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:56:00,802 INFO L82 PathProgramCache]: Analyzing trace with hash -757001113, now seen corresponding path program 1 times [2020-10-27 22:56:00,803 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:56:00,803 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1487436338] [2020-10-27 22:56:00,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:56:00,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:00,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:00,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:01,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:01,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:01,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-27 22:56:01,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 22:56:01,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 987 [2020-10-27 22:56:01,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:01,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:56:01,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-27 22:56:01,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 22:56:01,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:01,985 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-27 22:56:02,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:56:02,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:02,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:02,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:02,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:56:02,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:02,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 22:56:02,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:02,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:56:02,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:56:02,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:56:02,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:02,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:56:02,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:02,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:02,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:02,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 22:56:02,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:02,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 22:56:02,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:02,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:56:02,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:56:02,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:56:02,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:02,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 22:56:02,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:02,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:02,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:02,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:56:02,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:02,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:56:02,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:02,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:56:02,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:56:02,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:56:02,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:02,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-27 22:56:02,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:02,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:02,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:02,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:56:02,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:02,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 22:56:02,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:02,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:56:02,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:56:02,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 22:56:02,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:02,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-27 22:56:02,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:02,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:02,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:02,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:56:02,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:02,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:56:02,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:02,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:56:02,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 22:56:02,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:56:02,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:02,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-27 22:56:02,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:02,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:02,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:02,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:56:02,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:02,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:56:02,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:02,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:56:02,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 22:56:02,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:56:02,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:56:02,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-27 22:56:02,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:02,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:02,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:02,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:56:02,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:02,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:56:02,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:02,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:56:02,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-27 22:56:02,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:56:02,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:02,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 22:56:02,266 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1487436338] [2020-10-27 22:56:02,271 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:56:02,271 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 22:56:02,272 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344074747] [2020-10-27 22:56:02,272 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 22:56:02,273 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:56:02,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 22:56:02,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-27 22:56:02,274 INFO L87 Difference]: Start difference. First operand 5414 states and 7231 transitions. Second operand 9 states. [2020-10-27 22:56:02,447 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-27 22:56:03,116 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2020-10-27 22:56:04,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:56:04,313 INFO L93 Difference]: Finished difference Result 11459 states and 15385 transitions. [2020-10-27 22:56:04,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 22:56:04,314 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 74 [2020-10-27 22:56:04,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:56:04,422 INFO L225 Difference]: With dead ends: 11459 [2020-10-27 22:56:04,422 INFO L226 Difference]: Without dead ends: 7277 [2020-10-27 22:56:04,436 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-10-27 22:56:04,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7277 states. [2020-10-27 22:56:05,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7277 to 7227. [2020-10-27 22:56:05,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7227 states. [2020-10-27 22:56:05,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7227 states to 7227 states and 9485 transitions. [2020-10-27 22:56:05,098 INFO L78 Accepts]: Start accepts. Automaton has 7227 states and 9485 transitions. Word has length 74 [2020-10-27 22:56:05,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:56:05,098 INFO L481 AbstractCegarLoop]: Abstraction has 7227 states and 9485 transitions. [2020-10-27 22:56:05,098 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 22:56:05,098 INFO L276 IsEmpty]: Start isEmpty. Operand 7227 states and 9485 transitions. [2020-10-27 22:56:05,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-27 22:56:05,101 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:56:05,102 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] [2020-10-27 22:56:05,102 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 22:56:05,102 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:56:05,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:56:05,103 INFO L82 PathProgramCache]: Analyzing trace with hash 318990572, now seen corresponding path program 1 times [2020-10-27 22:56:05,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:56:05,103 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1814425316] [2020-10-27 22:56:05,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:56:05,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:05,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:05,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:05,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:06,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:06,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:10,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:10,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-27 22:56:10,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 22:56:10,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-27 22:56:10,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:10,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:56:10,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-27 22:56:10,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-27 22:56:10,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:10,333 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-27 22:56:10,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:56:10,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:10,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:10,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:10,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:56:10,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:10,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 22:56:10,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:10,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:56:10,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:56:10,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:56:10,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:10,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:56:10,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:10,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:10,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:10,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 22:56:10,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:10,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:56:10,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:10,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:56:10,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:56:10,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:56:10,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:10,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 22:56:10,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:10,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:10,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:10,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:56:10,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:10,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 22:56:10,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:10,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:56:10,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:56:10,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:56:10,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:10,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-27 22:56:10,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:10,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:10,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:10,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:56:10,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:10,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 22:56:10,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:10,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:56:10,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:56:10,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 22:56:10,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:10,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-27 22:56:10,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:10,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:10,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:10,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:56:10,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:10,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 22:56:10,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:10,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:56:10,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:56:10,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:56:10,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:10,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-27 22:56:10,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:10,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:10,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:10,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:56:10,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:10,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 22:56:10,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:10,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:56:10,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:56:10,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:56:10,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:10,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-27 22:56:10,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:10,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:10,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:10,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:56:10,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:10,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:56:10,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:10,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:56:10,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:56:10,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:56:10,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:10,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-27 22:56:10,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:10,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:10,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:10,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:56:10,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:10,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:56:10,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:10,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:56:10,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:56:10,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:56:10,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:10,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-27 22:56:10,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:10,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:10,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:10,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:56:10,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:10,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 22:56:10,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:10,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:56:10,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:56:10,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 22:56:10,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:10,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-27 22:56:10,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:10,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:10,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:10,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:56:10,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:10,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:56:10,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:10,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:56:10,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 22:56:10,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:56:10,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:10,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-27 22:56:10,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:10,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:10,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:10,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:56:10,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:10,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:56:10,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:10,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:56:10,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-27 22:56:10,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:56:10,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:10,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-27 22:56:10,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:10,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:10,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:10,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:56:10,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:10,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:56:10,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:10,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:56:10,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:56:10,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:56:10,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:10,658 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-27 22:56:10,659 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1814425316] [2020-10-27 22:56:10,659 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:56:10,659 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 22:56:10,660 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036633764] [2020-10-27 22:56:10,660 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 22:56:10,661 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:56:10,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 22:56:10,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-27 22:56:10,662 INFO L87 Difference]: Start difference. First operand 7227 states and 9485 transitions. Second operand 9 states. [2020-10-27 22:56:10,854 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-27 22:56:11,161 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-10-27 22:56:12,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:56:12,389 INFO L93 Difference]: Finished difference Result 12996 states and 17054 transitions. [2020-10-27 22:56:12,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 22:56:12,390 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 109 [2020-10-27 22:56:12,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:56:12,420 INFO L225 Difference]: With dead ends: 12996 [2020-10-27 22:56:12,421 INFO L226 Difference]: Without dead ends: 5825 [2020-10-27 22:56:12,441 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-10-27 22:56:12,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5825 states. [2020-10-27 22:56:13,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5825 to 5450. [2020-10-27 22:56:13,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5450 states. [2020-10-27 22:56:13,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5450 states to 5450 states and 6976 transitions. [2020-10-27 22:56:13,018 INFO L78 Accepts]: Start accepts. Automaton has 5450 states and 6976 transitions. Word has length 109 [2020-10-27 22:56:13,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:56:13,019 INFO L481 AbstractCegarLoop]: Abstraction has 5450 states and 6976 transitions. [2020-10-27 22:56:13,019 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 22:56:13,019 INFO L276 IsEmpty]: Start isEmpty. Operand 5450 states and 6976 transitions. [2020-10-27 22:56:13,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-27 22:56:13,022 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:56:13,022 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] [2020-10-27 22:56:13,023 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 22:56:13,023 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:56:13,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:56:13,023 INFO L82 PathProgramCache]: Analyzing trace with hash 1591091783, now seen corresponding path program 1 times [2020-10-27 22:56:13,024 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:56:13,024 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [787118266] [2020-10-27 22:56:13,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:56:13,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:13,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:13,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:13,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:13,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:15,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:18,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:18,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-27 22:56:18,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 22:56:18,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 22:56:18,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:18,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 22:56:18,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-27 22:56:18,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-27 22:56:18,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:18,239 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-27 22:56:18,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:56:18,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:18,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:18,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:18,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:56:18,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:18,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 22:56:18,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:18,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:56:18,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:56:18,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:56:18,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:56:18,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:56:18,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:18,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:18,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:18,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 22:56:18,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:18,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 22:56:18,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:18,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:56:18,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:56:18,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 22:56:18,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:18,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 22:56:18,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:18,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:18,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:18,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:56:18,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:18,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:56:18,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:18,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:56:18,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:56:18,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:56:18,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:56:18,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-27 22:56:18,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:18,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:18,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:18,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:56:18,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:18,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 22:56:18,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:18,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:56:18,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:56:18,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:56:18,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:56:18,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-27 22:56:18,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:18,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:18,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:18,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:56:18,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:18,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 22:56:18,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:18,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:56:18,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:56:18,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:56:18,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:56:18,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-27 22:56:18,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:18,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:18,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:18,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:56:18,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:18,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 22:56:18,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:18,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:56:18,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:56:18,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 22:56:18,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:18,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-27 22:56:18,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:18,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:18,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:18,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:56:18,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:18,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 22:56:18,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:18,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 22:56:18,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:56:18,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:56:18,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:56:18,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-27 22:56:18,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:18,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:18,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:18,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:56:18,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:18,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 22:56:18,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:18,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:56:18,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:56:18,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:56:18,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:56:18,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-27 22:56:18,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:18,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:18,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:18,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:56:18,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:18,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 22:56:18,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:18,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:56:18,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:56:18,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 22:56:18,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:56:18,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-27 22:56:18,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:18,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:18,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:18,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:56:18,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:18,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 22:56:18,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:18,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:56:18,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:56:18,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 22:56:18,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:56:18,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-27 22:56:18,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:18,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:18,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:18,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:56:18,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:18,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 22:56:18,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:18,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 22:56:18,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:56:18,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:56:18,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:56:18,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-27 22:56:18,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:18,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:18,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:18,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:56:18,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:18,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 22:56:18,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:18,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:56:18,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 22:56:18,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 22:56:18,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 22:56:18,754 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 10 proven. 12 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-27 22:56:18,757 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [787118266] [2020-10-27 22:56:18,757 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:56:18,757 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-27 22:56:18,758 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507868130] [2020-10-27 22:56:18,759 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-27 22:56:18,759 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:56:18,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-27 22:56:18,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2020-10-27 22:56:18,761 INFO L87 Difference]: Start difference. First operand 5450 states and 6976 transitions. Second operand 15 states. [2020-10-27 22:56:19,112 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 112 [2020-10-27 22:56:19,413 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-27 22:56:20,011 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-27 22:56:21,323 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 112 [2020-10-27 22:56:21,510 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-27 22:56:23,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:56:23,869 INFO L93 Difference]: Finished difference Result 13076 states and 17256 transitions. [2020-10-27 22:56:23,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-27 22:56:23,870 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 111 [2020-10-27 22:56:23,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:56:23,902 INFO L225 Difference]: With dead ends: 13076 [2020-10-27 22:56:23,903 INFO L226 Difference]: Without dead ends: 8273 [2020-10-27 22:56:23,917 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 438 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=490, Invalid=1490, Unknown=0, NotChecked=0, Total=1980 [2020-10-27 22:56:23,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8273 states. [2020-10-27 22:56:24,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8273 to 8132. [2020-10-27 22:56:24,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8132 states. [2020-10-27 22:56:24,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8132 states to 8132 states and 10505 transitions. [2020-10-27 22:56:24,675 INFO L78 Accepts]: Start accepts. Automaton has 8132 states and 10505 transitions. Word has length 111 [2020-10-27 22:56:24,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:56:24,675 INFO L481 AbstractCegarLoop]: Abstraction has 8132 states and 10505 transitions. [2020-10-27 22:56:24,675 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-27 22:56:24,676 INFO L276 IsEmpty]: Start isEmpty. Operand 8132 states and 10505 transitions. [2020-10-27 22:56:24,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-27 22:56:24,679 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:56:24,679 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] [2020-10-27 22:56:24,679 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 22:56:24,679 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:56:24,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:56:24,680 INFO L82 PathProgramCache]: Analyzing trace with hash -2026099269, now seen corresponding path program 1 times [2020-10-27 22:56:24,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:56:24,680 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1923487507] [2020-10-27 22:56:24,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:56:24,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:24,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:24,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:24,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:26,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:26,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:28,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:29,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:29,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-27 22:56:29,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 22:56:29,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-27 22:56:29,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:29,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 22:56:29,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-27 22:56:29,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-27 22:56:29,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:29,944 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-27 22:56:29,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:56:29,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:29,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:29,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:29,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:56:29,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:29,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:56:29,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:29,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:56:29,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:56:29,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:56:29,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:29,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:56:29,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:29,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:29,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:29,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 22:56:29,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:29,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 22:56:29,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:29,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:56:29,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:56:29,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:56:29,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:29,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 22:56:29,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:29,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:29,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:29,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:56:29,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:29,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 22:56:29,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:29,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:56:29,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:56:29,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:56:29,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:30,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-27 22:56:30,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:30,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:30,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:30,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:56:30,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:30,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 22:56:30,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:30,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 22:56:30,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:56:30,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:56:30,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:30,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-27 22:56:30,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:30,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:30,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:30,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:56:30,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:30,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-27 22:56:30,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:30,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 22:56:30,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:56:30,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 22:56:30,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:30,297 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 31 [2020-10-27 22:56:30,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-27 22:56:30,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:30,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:30,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:30,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:56:30,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:30,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 22:56:30,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:30,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:56:30,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:56:30,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:56:30,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:30,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-27 22:56:30,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:30,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:30,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:30,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:56:30,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:30,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:56:30,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:30,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:56:30,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:56:30,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:56:30,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:30,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-27 22:56:30,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:30,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:30,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:30,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:56:30,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:30,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:56:30,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:30,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:56:30,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:56:30,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:56:30,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:30,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-27 22:56:30,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:30,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:30,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:30,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:56:30,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:30,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 22:56:30,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:30,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:56:30,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:56:30,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:56:30,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:30,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-27 22:56:30,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:30,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:30,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:30,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:56:30,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:30,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 22:56:30,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:30,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 22:56:30,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:56:30,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 22:56:30,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:30,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-27 22:56:30,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:30,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:30,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:30,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:56:30,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:30,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 22:56:30,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:30,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 22:56:30,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:56:30,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 22:56:30,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:30,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-27 22:56:30,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:30,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:30,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:30,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:56:30,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:30,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:56:30,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:30,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:56:30,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:56:30,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:56:30,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:30,669 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 9 proven. 9 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-27 22:56:30,669 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1923487507] [2020-10-27 22:56:30,670 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:56:30,670 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-27 22:56:30,670 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781375610] [2020-10-27 22:56:30,671 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-27 22:56:30,671 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:56:30,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-27 22:56:30,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=369, Unknown=0, NotChecked=0, Total=420 [2020-10-27 22:56:30,672 INFO L87 Difference]: Start difference. First operand 8132 states and 10505 transitions. Second operand 21 states. [2020-10-27 22:56:31,022 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-27 22:56:31,244 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-27 22:56:31,509 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2020-10-27 22:56:31,874 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2020-10-27 22:56:32,213 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-27 22:56:32,483 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-27 22:56:32,717 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 68 [2020-10-27 22:56:33,069 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2020-10-27 22:56:33,572 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-27 22:56:34,498 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-10-27 22:56:34,735 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-27 22:56:35,670 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 22:56:37,083 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-10-27 22:56:37,475 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-27 22:56:39,628 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-27 22:56:40,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:56:40,878 INFO L93 Difference]: Finished difference Result 26420 states and 34088 transitions. [2020-10-27 22:56:40,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2020-10-27 22:56:40,879 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 111 [2020-10-27 22:56:40,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:56:40,957 INFO L225 Difference]: With dead ends: 26420 [2020-10-27 22:56:40,957 INFO L226 Difference]: Without dead ends: 20141 [2020-10-27 22:56:40,985 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2108 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=955, Invalid=6017, Unknown=0, NotChecked=0, Total=6972 [2020-10-27 22:56:41,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20141 states. [2020-10-27 22:56:43,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20141 to 18622. [2020-10-27 22:56:43,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18622 states. [2020-10-27 22:56:43,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18622 states to 18622 states and 24193 transitions. [2020-10-27 22:56:43,090 INFO L78 Accepts]: Start accepts. Automaton has 18622 states and 24193 transitions. Word has length 111 [2020-10-27 22:56:43,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:56:43,090 INFO L481 AbstractCegarLoop]: Abstraction has 18622 states and 24193 transitions. [2020-10-27 22:56:43,091 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-27 22:56:43,091 INFO L276 IsEmpty]: Start isEmpty. Operand 18622 states and 24193 transitions. [2020-10-27 22:56:43,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-27 22:56:43,093 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:56:43,094 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, 1, 1] [2020-10-27 22:56:43,094 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 22:56:43,094 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:56:43,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:56:43,095 INFO L82 PathProgramCache]: Analyzing trace with hash 90683141, now seen corresponding path program 1 times [2020-10-27 22:56:43,095 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:56:43,095 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1933294486] [2020-10-27 22:56:43,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:56:43,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:43,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:43,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:43,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:44,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:45,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:48,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:48,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-27 22:56:48,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 22:56:48,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 22:56:48,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:48,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:56:48,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-27 22:56:48,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-27 22:56:48,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:48,276 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-27 22:56:48,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:56:48,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:48,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:48,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:48,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:56:48,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:48,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:56:48,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:48,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:56:48,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:56:48,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:56:48,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:48,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:56:48,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:48,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:48,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:48,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 22:56:48,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:48,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:56:48,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:48,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:56:48,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:56:48,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:56:48,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:48,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 22:56:48,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:48,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:48,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:48,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:56:48,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:48,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 22:56:48,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:48,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:56:48,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:56:48,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:56:48,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:48,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-27 22:56:48,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:48,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:48,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:48,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:56:48,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:48,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:56:48,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:48,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:56:48,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:56:48,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:56:48,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:48,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-27 22:56:48,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:48,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:48,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:48,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:56:48,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:48,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:56:48,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:48,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:56:48,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:56:48,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:56:48,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:48,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-27 22:56:48,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:48,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:48,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:48,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:56:48,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:48,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:56:48,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:48,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:56:48,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:56:48,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 22:56:48,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:48,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-27 22:56:48,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:48,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:48,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:48,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:56:48,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:48,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:56:48,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:48,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:56:48,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:56:48,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:56:48,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:48,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-27 22:56:48,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:48,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:48,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:48,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:56:48,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:48,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:56:48,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:48,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:56:48,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:56:48,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:56:48,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:48,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-27 22:56:48,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:48,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:48,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:48,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:56:48,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:48,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:56:48,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:48,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:56:48,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:56:48,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:56:48,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:48,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-27 22:56:48,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:48,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:48,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:48,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:56:48,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:48,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:56:48,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:48,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:56:48,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:56:48,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:56:48,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:48,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-27 22:56:48,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:48,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:48,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:48,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:56:48,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:48,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 22:56:48,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:48,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:56:48,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:56:48,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 22:56:48,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:48,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-27 22:56:48,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:48,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:48,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:48,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:56:48,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:48,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:56:48,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:48,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:56:48,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:56:48,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:56:48,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:48,512 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-27 22:56:48,513 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1933294486] [2020-10-27 22:56:48,513 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:56:48,513 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 22:56:48,515 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891728390] [2020-10-27 22:56:48,516 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 22:56:48,516 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:56:48,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 22:56:48,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-27 22:56:48,517 INFO L87 Difference]: Start difference. First operand 18622 states and 24193 transitions. Second operand 9 states. [2020-10-27 22:56:48,743 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-27 22:56:49,186 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 22:56:50,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:56:50,569 INFO L93 Difference]: Finished difference Result 27768 states and 35917 transitions. [2020-10-27 22:56:50,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 22:56:50,570 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 111 [2020-10-27 22:56:50,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:56:50,601 INFO L225 Difference]: With dead ends: 27768 [2020-10-27 22:56:50,601 INFO L226 Difference]: Without dead ends: 9254 [2020-10-27 22:56:50,643 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-10-27 22:56:50,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9254 states. [2020-10-27 22:56:51,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9254 to 9170. [2020-10-27 22:56:51,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9170 states. [2020-10-27 22:56:51,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9170 states to 9170 states and 11599 transitions. [2020-10-27 22:56:51,531 INFO L78 Accepts]: Start accepts. Automaton has 9170 states and 11599 transitions. Word has length 111 [2020-10-27 22:56:51,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:56:51,531 INFO L481 AbstractCegarLoop]: Abstraction has 9170 states and 11599 transitions. [2020-10-27 22:56:51,531 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 22:56:51,531 INFO L276 IsEmpty]: Start isEmpty. Operand 9170 states and 11599 transitions. [2020-10-27 22:56:51,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-27 22:56:51,534 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:56:51,534 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] [2020-10-27 22:56:51,535 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 22:56:51,535 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:56:51,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:56:51,535 INFO L82 PathProgramCache]: Analyzing trace with hash 1474019335, now seen corresponding path program 1 times [2020-10-27 22:56:51,535 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:56:51,536 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2075048354] [2020-10-27 22:56:51,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:56:51,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:51,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:51,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:51,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:52,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:53,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:54,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:56,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:56,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-27 22:56:56,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 22:56:56,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-27 22:56:56,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:56,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 22:56:56,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-27 22:56:56,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-27 22:56:56,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:56,744 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-27 22:56:56,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:56:56,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:56,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:56,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:56,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:56:56,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:56,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:56:56,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:56,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:56:56,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:56:56,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:56:56,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:56,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:56:56,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:56,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:56,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:56,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 22:56:56,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:56,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 22:56:56,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:56,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 22:56:56,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:56:56,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 22:56:56,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:56,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 22:56:56,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:56,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:56,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:56,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:56:56,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:56,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 22:56:56,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:56,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:56:56,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:56:56,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:56:56,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:56,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-27 22:56:56,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:56,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:56,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:56,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:56:56,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:56,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:56:56,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:56,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:56:56,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:56:56,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:56:56,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:56,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-27 22:56:56,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:56,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:56,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:56,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:56:56,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:56,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 22:56:56,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:56,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:56:56,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:56:56,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 22:56:56,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:56,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-27 22:56:56,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:56,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:56,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:56,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:56:56,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:56,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 22:56:56,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:56,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:56:56,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:56:56,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 22:56:56,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:56,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-27 22:56:56,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:56,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:56,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:56,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:56:56,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:56,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:56:56,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:56,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:56:56,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:56:56,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:56:56,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:56,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-27 22:56:56,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:56,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:56,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:56,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:56:56,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:56,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:56:56,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:56,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:56:56,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:56:56,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:56:56,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:56,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-27 22:56:57,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:57,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:57,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:57,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 22:56:57,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:57,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 22:56:57,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:57,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 22:56:57,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:56:57,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 22:56:57,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:57,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-27 22:56:57,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:57,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:57,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:57,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:56:57,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:57,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 22:56:57,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:57,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:56:57,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:56:57,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 22:56:57,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:57,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-27 22:56:57,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:57,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:57,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:57,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:56:57,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:57,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 22:56:57,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:57,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:56:57,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:56:57,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 22:56:57,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:57,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-27 22:56:57,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:57,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:57,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:57,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:56:57,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:57,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:56:57,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:57,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:56:57,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 22:56:57,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 22:56:57,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:57,170 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-27 22:56:57,171 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2075048354] [2020-10-27 22:56:57,171 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:56:57,171 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-27 22:56:57,171 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493318371] [2020-10-27 22:56:57,172 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-27 22:56:57,172 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:56:57,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-27 22:56:57,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2020-10-27 22:56:57,173 INFO L87 Difference]: Start difference. First operand 9170 states and 11599 transitions. Second operand 16 states. [2020-10-27 22:56:57,358 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-27 22:56:57,535 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-10-27 22:56:57,701 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-27 22:56:58,758 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-27 22:56:58,912 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-27 22:56:59,129 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-27 22:57:02,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:57:02,667 INFO L93 Difference]: Finished difference Result 18660 states and 24587 transitions. [2020-10-27 22:57:02,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-27 22:57:02,667 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 111 [2020-10-27 22:57:02,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:57:02,725 INFO L225 Difference]: With dead ends: 18660 [2020-10-27 22:57:02,725 INFO L226 Difference]: Without dead ends: 15627 [2020-10-27 22:57:02,740 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 673 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=620, Invalid=1930, Unknown=0, NotChecked=0, Total=2550 [2020-10-27 22:57:02,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15627 states. [2020-10-27 22:57:04,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15627 to 14136. [2020-10-27 22:57:04,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14136 states. [2020-10-27 22:57:04,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14136 states to 14136 states and 17859 transitions. [2020-10-27 22:57:04,284 INFO L78 Accepts]: Start accepts. Automaton has 14136 states and 17859 transitions. Word has length 111 [2020-10-27 22:57:04,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:57:04,285 INFO L481 AbstractCegarLoop]: Abstraction has 14136 states and 17859 transitions. [2020-10-27 22:57:04,285 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-27 22:57:04,285 INFO L276 IsEmpty]: Start isEmpty. Operand 14136 states and 17859 transitions. [2020-10-27 22:57:04,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-27 22:57:04,288 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:57:04,288 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] [2020-10-27 22:57:04,289 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 22:57:04,289 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:57:04,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:57:04,289 INFO L82 PathProgramCache]: Analyzing trace with hash 1536900601, now seen corresponding path program 1 times [2020-10-27 22:57:04,289 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:57:04,290 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [341303639] [2020-10-27 22:57:04,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:57:04,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:57:04,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:04,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:04,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:04,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:04,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:05,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:05,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:09,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:57:09,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-27 22:57:09,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 22:57:09,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 22:57:09,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:57:09,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 22:57:09,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-27 22:57:09,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-27 22:57:09,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:57:09,477 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-27 22:57:09,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:57:09,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:57:09,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:09,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:57:09,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:57:09,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:57:09,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:57:09,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:57:09,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:57:09,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:57:09,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:57:09,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:57:09,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:57:09,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:57:09,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:09,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:57:09,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 22:57:09,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:57:09,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:57:09,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:57:09,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:57:09,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:57:09,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:57:09,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:57:09,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 22:57:09,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:57:09,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:09,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:57:09,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:57:09,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:57:09,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 22:57:09,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:57:09,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:57:09,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:57:09,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:57:09,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:57:09,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-27 22:57:09,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:57:09,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:09,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:57:09,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:57:09,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:57:09,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:57:09,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:57:09,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:57:09,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:57:09,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:57:09,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:57:09,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-27 22:57:09,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:57:09,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:09,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:57:09,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:57:09,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:57:09,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 22:57:09,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:57:09,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 22:57:09,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:57:09,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 22:57:09,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:57:09,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-27 22:57:09,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:57:09,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:09,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:57:09,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:57:09,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:57:09,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:57:09,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:57:09,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:57:09,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:57:09,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:57:09,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:57:09,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-27 22:57:09,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:57:09,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:09,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:57:09,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:57:09,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:57:09,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:57:09,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:57:09,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:57:09,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:57:09,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:57:09,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:57:09,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-27 22:57:09,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:57:09,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:09,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:57:09,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:57:09,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:57:09,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 22:57:09,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:57:09,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:57:09,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:57:09,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:57:09,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:57:09,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-27 22:57:09,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:57:09,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:09,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:57:09,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:57:09,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:57:09,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:57:09,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:57:09,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:57:09,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:57:09,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:57:09,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:57:09,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-27 22:57:09,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:57:09,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:09,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:57:09,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:57:09,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:57:09,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:57:09,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:57:09,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 22:57:09,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-27 22:57:09,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:57:09,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:57:09,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-27 22:57:09,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:57:09,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:09,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:57:09,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:57:09,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:57:09,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:57:09,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:57:09,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:57:09,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 22:57:09,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:57:09,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:57:09,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-27 22:57:09,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:57:09,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:09,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:57:09,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:57:09,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:57:09,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 22:57:09,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:57:09,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:57:09,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:57:09,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:57:09,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:57:09,730 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-27 22:57:09,730 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [341303639] [2020-10-27 22:57:09,730 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:57:09,731 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-27 22:57:09,731 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428474463] [2020-10-27 22:57:09,731 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 22:57:09,731 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:57:09,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 22:57:09,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2020-10-27 22:57:09,732 INFO L87 Difference]: Start difference. First operand 14136 states and 17859 transitions. Second operand 13 states. [2020-10-27 22:57:09,928 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 22:57:10,146 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2020-10-27 22:57:10,417 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-10-27 22:57:10,688 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-27 22:57:10,983 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 109 [2020-10-27 22:57:11,500 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 108 [2020-10-27 22:57:12,991 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-10-27 22:57:13,153 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2020-10-27 22:57:14,532 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-27 22:57:14,708 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-27 22:57:16,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:57:16,773 INFO L93 Difference]: Finished difference Result 33994 states and 42820 transitions. [2020-10-27 22:57:16,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2020-10-27 22:57:16,774 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 111 [2020-10-27 22:57:16,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:57:16,837 INFO L225 Difference]: With dead ends: 33994 [2020-10-27 22:57:16,837 INFO L226 Difference]: Without dead ends: 19960 [2020-10-27 22:57:16,866 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 875 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=481, Invalid=2489, Unknown=0, NotChecked=0, Total=2970 [2020-10-27 22:57:16,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19960 states. [2020-10-27 22:57:18,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19960 to 18749. [2020-10-27 22:57:18,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18749 states. [2020-10-27 22:57:18,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18749 states to 18749 states and 23270 transitions. [2020-10-27 22:57:18,939 INFO L78 Accepts]: Start accepts. Automaton has 18749 states and 23270 transitions. Word has length 111 [2020-10-27 22:57:18,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:57:18,940 INFO L481 AbstractCegarLoop]: Abstraction has 18749 states and 23270 transitions. [2020-10-27 22:57:18,940 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 22:57:18,940 INFO L276 IsEmpty]: Start isEmpty. Operand 18749 states and 23270 transitions. [2020-10-27 22:57:18,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-27 22:57:18,944 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:57:18,944 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, 1, 1] [2020-10-27 22:57:18,945 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-27 22:57:18,945 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:57:18,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:57:18,945 INFO L82 PathProgramCache]: Analyzing trace with hash -1710999941, now seen corresponding path program 1 times [2020-10-27 22:57:18,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:57:18,945 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1443305075] [2020-10-27 22:57:18,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:57:18,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:57:18,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:19,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:19,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:19,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:19,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:23,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:57:23,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-27 22:57:23,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 22:57:23,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-27 22:57:23,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:57:23,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 22:57:23,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 22:57:23,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-27 22:57:23,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:57:24,143 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-27 22:57:24,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:57:24,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:57:24,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:24,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:57:24,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:57:24,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:57:24,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:57:24,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:57:24,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:57:24,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:57:24,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:57:24,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:57:24,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:57:24,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:57:24,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:24,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:57:24,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 22:57:24,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:57:24,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:57:24,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:57:24,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:57:24,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:57:24,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 22:57:24,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:57:24,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 22:57:24,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:57:24,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:24,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:57:24,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:57:24,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:57:24,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 22:57:24,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:57:24,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:57:24,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:57:24,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:57:24,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:57:24,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-27 22:57:24,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:57:24,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:24,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:57:24,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:57:24,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:57:24,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 22:57:24,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:57:24,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:57:24,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:57:24,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 22:57:24,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:57:24,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-27 22:57:24,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:57:24,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:24,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:57:24,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:57:24,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:57:24,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:57:24,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:57:24,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:57:24,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:57:24,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:57:24,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:57:24,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-27 22:57:24,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:57:24,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:24,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:57:24,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:57:24,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:57:24,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:57:24,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:57:24,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:57:24,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:57:24,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:57:24,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:57:24,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-27 22:57:24,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:57:24,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:24,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:57:24,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:57:24,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:57:24,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:57:24,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:57:24,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:57:24,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:57:24,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:57:24,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:57:24,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-27 22:57:24,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:57:24,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:24,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:57:24,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:57:24,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:57:24,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:57:24,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:57:24,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:57:24,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:57:24,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:57:24,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:57:24,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-27 22:57:24,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:57:24,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:24,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:57:24,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:57:24,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:57:24,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 22:57:24,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:57:24,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 22:57:24,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:57:24,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 22:57:24,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:57:24,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-27 22:57:24,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:57:24,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:24,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:57:24,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:57:24,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:57:24,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:57:24,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:57:24,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:57:24,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:57:24,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:57:24,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:57:24,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-27 22:57:24,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:57:24,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:24,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:57:24,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:57:24,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:57:24,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:57:24,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:57:24,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:57:24,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:57:24,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:57:24,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:57:24,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-27 22:57:24,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:57:24,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:24,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:24,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:57:24,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:57:24,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:57:24,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:57:24,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:57:24,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:57:24,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 22:57:24,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:57:24,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:57:24,399 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-27 22:57:24,399 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1443305075] [2020-10-27 22:57:24,399 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:57:24,400 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-27 22:57:24,400 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177368230] [2020-10-27 22:57:24,400 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 22:57:24,400 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:57:24,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 22:57:24,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-27 22:57:24,401 INFO L87 Difference]: Start difference. First operand 18749 states and 23270 transitions. Second operand 11 states. [2020-10-27 22:57:24,579 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-27 22:57:25,343 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-27 22:57:26,785 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-27 22:57:28,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:57:28,914 INFO L93 Difference]: Finished difference Result 42759 states and 53854 transitions. [2020-10-27 22:57:28,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-27 22:57:28,915 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 112 [2020-10-27 22:57:28,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:57:28,989 INFO L225 Difference]: With dead ends: 42759 [2020-10-27 22:57:28,989 INFO L226 Difference]: Without dead ends: 24115 [2020-10-27 22:57:29,023 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=185, Invalid=627, Unknown=0, NotChecked=0, Total=812 [2020-10-27 22:57:29,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24115 states. [2020-10-27 22:57:31,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24115 to 22764. [2020-10-27 22:57:31,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22764 states. [2020-10-27 22:57:31,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22764 states to 22764 states and 28174 transitions. [2020-10-27 22:57:31,261 INFO L78 Accepts]: Start accepts. Automaton has 22764 states and 28174 transitions. Word has length 112 [2020-10-27 22:57:31,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:57:31,262 INFO L481 AbstractCegarLoop]: Abstraction has 22764 states and 28174 transitions. [2020-10-27 22:57:31,262 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 22:57:31,262 INFO L276 IsEmpty]: Start isEmpty. Operand 22764 states and 28174 transitions. [2020-10-27 22:57:31,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-27 22:57:31,264 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:57:31,265 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, 1] [2020-10-27 22:57:31,265 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-27 22:57:31,265 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:57:31,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:57:31,266 INFO L82 PathProgramCache]: Analyzing trace with hash 1049102324, now seen corresponding path program 1 times [2020-10-27 22:57:31,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:57:31,266 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1241373968] [2020-10-27 22:57:31,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:57:31,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:57:31,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:31,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:31,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:31,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:32,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:36,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:57:36,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-27 22:57:36,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 22:57:36,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 22:57:36,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:57:36,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 22:57:36,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-27 22:57:36,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-27 22:57:36,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:57:36,585 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-27 22:57:36,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:57:36,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:57:36,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:36,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:57:36,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:57:36,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:57:36,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:57:36,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:57:36,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:57:36,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:57:36,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:57:36,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:57:36,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:57:36,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:57:36,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:36,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:57:36,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 22:57:36,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:57:36,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 22:57:36,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:57:36,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 22:57:36,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:57:36,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 22:57:36,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:57:36,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 22:57:36,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:57:36,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:36,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:57:36,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:57:36,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:57:36,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 22:57:36,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:57:36,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:57:36,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:57:36,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:57:36,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:57:36,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-27 22:57:36,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:57:36,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:36,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:57:36,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:57:36,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:57:36,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:57:36,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:57:36,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:57:36,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:57:36,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:57:36,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:57:36,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-27 22:57:36,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:57:36,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:36,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:57:36,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:57:36,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:57:36,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 22:57:36,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:57:36,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 22:57:36,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:57:36,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:57:36,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:57:36,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-27 22:57:36,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:57:36,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:36,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:57:36,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:57:36,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:57:36,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 22:57:36,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:57:36,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 22:57:36,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:57:36,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 22:57:36,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:57:36,943 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 30 [2020-10-27 22:57:36,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-27 22:57:36,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:57:36,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:36,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:57:36,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:57:36,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:57:36,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:57:36,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:57:36,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:57:36,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:57:36,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:57:36,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:57:36,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-27 22:57:36,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:57:36,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:36,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:57:36,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:57:36,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:57:36,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:57:36,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:57:36,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:57:36,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:57:36,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:57:36,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:57:36,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-27 22:57:37,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:57:37,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:37,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:57:37,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:57:37,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:57:37,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 22:57:37,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:57:37,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 22:57:37,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:57:37,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 22:57:37,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:57:37,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-27 22:57:37,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:57:37,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:37,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:57:37,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:57:37,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:57:37,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:57:37,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:57:37,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:57:37,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:57:37,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:57:37,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:57:37,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-27 22:57:37,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:57:37,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:37,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:57:37,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 22:57:37,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:57:37,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 22:57:37,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:57:37,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 22:57:37,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:57:37,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 22:57:37,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:57:37,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-27 22:57:37,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:57:37,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:37,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:57:37,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:57:37,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:57:37,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:57:37,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:57:37,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:57:37,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:57:37,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:57:37,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:57:37,234 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 9 proven. 9 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-27 22:57:37,234 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1241373968] [2020-10-27 22:57:37,234 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:57:37,234 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-27 22:57:37,235 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148539978] [2020-10-27 22:57:37,236 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-27 22:57:37,237 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:57:37,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-27 22:57:37,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=408, Unknown=0, NotChecked=0, Total=462 [2020-10-27 22:57:37,238 INFO L87 Difference]: Start difference. First operand 22764 states and 28174 transitions. Second operand 22 states. [2020-10-27 22:57:37,798 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 122 [2020-10-27 22:57:37,996 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-10-27 22:57:38,258 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-27 22:57:38,586 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 111 [2020-10-27 22:57:38,969 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 22:57:39,799 WARN L193 SmtUtils]: Spent 377.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 123 [2020-10-27 22:57:39,962 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 53 [2020-10-27 22:57:40,416 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-27 22:57:41,232 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-27 22:57:42,105 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 114 [2020-10-27 22:57:43,109 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-27 22:57:44,009 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-10-27 22:57:44,409 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 122 [2020-10-27 22:57:44,968 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-27 22:57:49,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:57:49,367 INFO L93 Difference]: Finished difference Result 71597 states and 88969 transitions. [2020-10-27 22:57:49,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2020-10-27 22:57:49,368 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 112 [2020-10-27 22:57:49,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:57:49,690 INFO L225 Difference]: With dead ends: 71597 [2020-10-27 22:57:49,691 INFO L226 Difference]: Without dead ends: 51614 [2020-10-27 22:57:49,727 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1359 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=792, Invalid=4320, Unknown=0, NotChecked=0, Total=5112 [2020-10-27 22:57:49,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51614 states. [2020-10-27 22:57:54,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51614 to 48118. [2020-10-27 22:57:54,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48118 states. [2020-10-27 22:57:54,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48118 states to 48118 states and 60019 transitions. [2020-10-27 22:57:54,329 INFO L78 Accepts]: Start accepts. Automaton has 48118 states and 60019 transitions. Word has length 112 [2020-10-27 22:57:54,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:57:54,329 INFO L481 AbstractCegarLoop]: Abstraction has 48118 states and 60019 transitions. [2020-10-27 22:57:54,329 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-27 22:57:54,329 INFO L276 IsEmpty]: Start isEmpty. Operand 48118 states and 60019 transitions. [2020-10-27 22:57:54,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-27 22:57:54,333 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:57:54,333 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, 1] [2020-10-27 22:57:54,333 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-27 22:57:54,334 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:57:54,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:57:54,334 INFO L82 PathProgramCache]: Analyzing trace with hash 1250926258, now seen corresponding path program 1 times [2020-10-27 22:57:54,334 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:57:54,334 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2092404299] [2020-10-27 22:57:54,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:57:54,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:57:54,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:54,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:54,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:55,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:59,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:57:59,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-27 22:57:59,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 22:57:59,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 22:57:59,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:57:59,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 22:57:59,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-27 22:57:59,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-27 22:57:59,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:57:59,530 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-27 22:57:59,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:57:59,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:57:59,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:59,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:57:59,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:57:59,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:57:59,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:57:59,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:57:59,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:57:59,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:57:59,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:57:59,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:57:59,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:57:59,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:57:59,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:59,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:57:59,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 22:57:59,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:57:59,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:57:59,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:57:59,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:57:59,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:57:59,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 22:57:59,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:57:59,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 22:57:59,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:57:59,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:59,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:57:59,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:57:59,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:57:59,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 22:57:59,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:57:59,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:57:59,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:57:59,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:57:59,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:57:59,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-27 22:57:59,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:57:59,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:59,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:57:59,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:57:59,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:57:59,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:57:59,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:57:59,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:57:59,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:57:59,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:57:59,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:57:59,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-27 22:57:59,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:57:59,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:59,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:57:59,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:57:59,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:57:59,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 22:57:59,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:57:59,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:57:59,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:57:59,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 22:57:59,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:57:59,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-27 22:57:59,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:57:59,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:59,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:57:59,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:57:59,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:57:59,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:57:59,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:57:59,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:57:59,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:57:59,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:57:59,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:57:59,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-27 22:57:59,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:57:59,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:59,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:57:59,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:57:59,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:57:59,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:57:59,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:57:59,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 22:57:59,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:57:59,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:57:59,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:57:59,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-27 22:57:59,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:57:59,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:59,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:57:59,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:57:59,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:57:59,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:57:59,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:57:59,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:57:59,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:57:59,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:57:59,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:57:59,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-27 22:57:59,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:57:59,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:59,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:57:59,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:57:59,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:57:59,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 22:57:59,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:57:59,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:57:59,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:57:59,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 22:57:59,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:57:59,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-27 22:57:59,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:57:59,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:59,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:57:59,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:57:59,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:57:59,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:57:59,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:57:59,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 22:57:59,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:57:59,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:57:59,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:57:59,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-27 22:57:59,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:57:59,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:59,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:57:59,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 22:57:59,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:57:59,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:57:59,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:57:59,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:57:59,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:57:59,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 22:57:59,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:57:59,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-27 22:57:59,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:57:59,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:59,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:57:59,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:57:59,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:57:59,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:57:59,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:57:59,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:57:59,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 22:57:59,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 22:57:59,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:57:59,830 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 10 proven. 12 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-27 22:57:59,830 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2092404299] [2020-10-27 22:57:59,830 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:57:59,830 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-27 22:57:59,830 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420339289] [2020-10-27 22:57:59,831 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-27 22:57:59,831 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:57:59,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-27 22:57:59,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2020-10-27 22:57:59,831 INFO L87 Difference]: Start difference. First operand 48118 states and 60019 transitions. Second operand 15 states. [2020-10-27 22:58:00,151 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 110 [2020-10-27 22:58:00,351 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-10-27 22:58:00,913 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-27 22:58:01,947 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 111 [2020-10-27 22:58:02,240 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-10-27 22:58:02,760 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-27 22:58:02,924 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-27 22:58:03,082 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-27 22:58:03,290 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-27 22:58:06,284 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-27 22:58:12,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:58:12,044 INFO L93 Difference]: Finished difference Result 73843 states and 92783 transitions. [2020-10-27 22:58:12,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2020-10-27 22:58:12,045 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 112 [2020-10-27 22:58:12,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:58:12,206 INFO L225 Difference]: With dead ends: 73843 [2020-10-27 22:58:12,206 INFO L226 Difference]: Without dead ends: 59110 [2020-10-27 22:58:12,234 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1455 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=900, Invalid=3792, Unknown=0, NotChecked=0, Total=4692 [2020-10-27 22:58:12,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59110 states. [2020-10-27 22:58:17,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59110 to 58210. [2020-10-27 22:58:17,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58210 states. [2020-10-27 22:58:17,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58210 states to 58210 states and 72751 transitions. [2020-10-27 22:58:17,972 INFO L78 Accepts]: Start accepts. Automaton has 58210 states and 72751 transitions. Word has length 112 [2020-10-27 22:58:17,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:58:17,972 INFO L481 AbstractCegarLoop]: Abstraction has 58210 states and 72751 transitions. [2020-10-27 22:58:17,972 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-27 22:58:17,973 INFO L276 IsEmpty]: Start isEmpty. Operand 58210 states and 72751 transitions. [2020-10-27 22:58:17,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-27 22:58:17,977 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:58:17,977 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, 1, 1] [2020-10-27 22:58:17,977 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-27 22:58:17,977 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:58:17,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:58:17,977 INFO L82 PathProgramCache]: Analyzing trace with hash -923753905, now seen corresponding path program 1 times [2020-10-27 22:58:17,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:58:17,978 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [551196848] [2020-10-27 22:58:17,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:58:18,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:58:18,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:58:18,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:58:18,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:58:18,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:58:23,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:58:23,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-27 22:58:23,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 22:58:23,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-27 22:58:23,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:58:23,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 22:58:23,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-27 22:58:23,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-27 22:58:23,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:58:23,276 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-27 22:58:23,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:58:23,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:58:23,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:58:23,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:58:23,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:58:23,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:58:23,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:58:23,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:58:23,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:58:23,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:58:23,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:58:23,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:58:23,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:58:23,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:58:23,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:58:23,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:58:23,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 22:58:23,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:58:23,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:58:23,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:58:23,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:58:23,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:58:23,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 22:58:23,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:58:23,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 22:58:23,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:58:23,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:58:23,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:58:23,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:58:23,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:58:23,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 22:58:23,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:58:23,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:58:23,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:58:23,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:58:23,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:58:23,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-27 22:58:23,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:58:23,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:58:23,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:58:23,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:58:23,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:58:23,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:58:23,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:58:23,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:58:23,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:58:23,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:58:23,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:58:23,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-27 22:58:23,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:58:23,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:58:23,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:58:23,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:58:23,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:58:23,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 22:58:23,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:58:23,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 22:58:23,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:58:23,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:58:23,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:58:23,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-27 22:58:23,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:58:23,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:58:23,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:58:23,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:58:23,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:58:23,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 22:58:23,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:58:23,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 22:58:23,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:58:23,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 22:58:23,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:58:23,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-27 22:58:23,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:58:23,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:58:23,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:58:23,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:58:23,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:58:23,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:58:23,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:58:23,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:58:23,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:58:23,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:58:23,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:58:23,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-27 22:58:23,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:58:23,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:58:23,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:58:23,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:58:23,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:58:23,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:58:23,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:58:23,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:58:23,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:58:23,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:58:23,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:58:23,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-27 22:58:23,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:58:23,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:58:23,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:58:23,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:58:23,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:58:23,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 22:58:23,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:58:23,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 22:58:23,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:58:23,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 22:58:23,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:58:23,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-27 22:58:23,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:58:23,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:58:23,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:58:23,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:58:23,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:58:23,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:58:23,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:58:23,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:58:23,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:58:23,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:58:23,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:58:23,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-27 22:58:23,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:58:23,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:58:23,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:58:23,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:58:23,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:58:23,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 22:58:23,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:58:23,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 22:58:23,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:58:23,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 22:58:23,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:58:23,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-27 22:58:23,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:58:23,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:58:23,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:58:23,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 22:58:23,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:58:23,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 22:58:23,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:58:23,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:58:23,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-27 22:58:23,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:58:23,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:58:23,890 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 9 proven. 9 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-27 22:58:23,890 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [551196848] [2020-10-27 22:58:23,890 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:58:23,890 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-27 22:58:23,891 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542477239] [2020-10-27 22:58:23,891 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-27 22:58:23,891 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:58:23,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-27 22:58:23,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=369, Unknown=0, NotChecked=0, Total=420 [2020-10-27 22:58:23,892 INFO L87 Difference]: Start difference. First operand 58210 states and 72751 transitions. Second operand 21 states. [2020-10-27 22:58:24,235 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-27 22:58:24,449 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-27 22:58:24,779 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-27 22:58:25,133 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2020-10-27 22:58:25,681 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2020-10-27 22:58:25,874 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 69 [2020-10-27 22:58:26,261 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-27 22:58:26,939 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 22:58:27,565 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2020-10-27 22:58:29,061 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-27 22:58:29,255 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2020-10-27 22:58:29,569 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-27 22:58:35,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:58:35,145 INFO L93 Difference]: Finished difference Result 104539 states and 130287 transitions. [2020-10-27 22:58:35,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2020-10-27 22:58:35,146 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 113 [2020-10-27 22:58:35,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:58:35,295 INFO L225 Difference]: With dead ends: 104539 [2020-10-27 22:58:35,295 INFO L226 Difference]: Without dead ends: 61963 [2020-10-27 22:58:35,349 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1291 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=710, Invalid=4120, Unknown=0, NotChecked=0, Total=4830 [2020-10-27 22:58:35,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61963 states.