/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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 -i ../../../trunk/examples/svcomp/loops/eureka_05.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 00:08:36,644 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 00:08:36,648 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 00:08:36,693 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 00:08:36,694 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 00:08:36,705 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 00:08:36,707 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 00:08:36,711 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 00:08:36,714 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 00:08:36,718 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 00:08:36,719 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 00:08:36,720 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 00:08:36,720 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 00:08:36,723 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 00:08:36,726 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 00:08:36,728 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 00:08:36,729 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 00:08:36,730 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 00:08:36,731 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 00:08:36,739 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 00:08:36,741 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 00:08:36,742 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 00:08:36,743 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 00:08:36,744 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 00:08:36,748 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 00:08:36,748 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 00:08:36,748 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 00:08:36,751 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 00:08:36,752 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 00:08:36,753 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 00:08:36,753 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 00:08:36,754 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 00:08:36,754 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 00:08:36,755 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 00:08:36,756 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 00:08:36,756 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 00:08:36,757 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 00:08:36,757 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 00:08:36,757 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 00:08:36,758 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 00:08:36,760 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 00:08:36,760 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 [2020-10-15 00:08:36,805 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 00:08:36,805 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 00:08:36,807 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 00:08:36,807 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 00:08:36,807 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 00:08:36,808 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 00:08:36,808 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 00:08:36,808 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 00:08:36,809 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 00:08:36,809 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 00:08:36,810 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 00:08:36,810 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 00:08:36,810 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 00:08:36,811 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 00:08:36,811 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 00:08:36,811 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 00:08:36,811 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 00:08:36,812 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 00:08:36,812 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 00:08:36,812 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 00:08:36,812 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 00:08:36,812 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 00:08:36,813 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 00:08:36,813 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 00:08:36,813 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 00:08:36,813 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 00:08:36,813 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 00:08:36,814 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 00:08:36,814 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 00:08:36,814 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-15 00:08:37,130 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 00:08:37,142 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 00:08:37,145 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 00:08:37,147 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 00:08:37,147 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 00:08:37,148 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/eureka_05.i [2020-10-15 00:08:37,212 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5b13b583c/8117a1756318427db629ee6a2fd7cd93/FLAGae38d1265 [2020-10-15 00:08:37,683 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 00:08:37,684 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/eureka_05.i [2020-10-15 00:08:37,690 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5b13b583c/8117a1756318427db629ee6a2fd7cd93/FLAGae38d1265 [2020-10-15 00:08:38,064 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5b13b583c/8117a1756318427db629ee6a2fd7cd93 [2020-10-15 00:08:38,075 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 00:08:38,077 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 00:08:38,078 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 00:08:38,078 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 00:08:38,082 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 00:08:38,083 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 12:08:38" (1/1) ... [2020-10-15 00:08:38,086 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51800d17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:08:38, skipping insertion in model container [2020-10-15 00:08:38,086 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 12:08:38" (1/1) ... [2020-10-15 00:08:38,094 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 00:08:38,114 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 00:08:38,306 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 00:08:38,318 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 00:08:38,344 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 00:08:38,367 INFO L208 MainTranslator]: Completed translation [2020-10-15 00:08:38,367 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:08:38 WrapperNode [2020-10-15 00:08:38,368 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 00:08:38,368 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 00:08:38,369 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 00:08:38,369 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 00:08:38,468 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:08:38" (1/1) ... [2020-10-15 00:08:38,468 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:08:38" (1/1) ... [2020-10-15 00:08:38,476 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:08:38" (1/1) ... [2020-10-15 00:08:38,477 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:08:38" (1/1) ... [2020-10-15 00:08:38,485 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:08:38" (1/1) ... [2020-10-15 00:08:38,492 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:08:38" (1/1) ... [2020-10-15 00:08:38,494 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:08:38" (1/1) ... [2020-10-15 00:08:38,496 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 00:08:38,497 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 00:08:38,497 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 00:08:38,497 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 00:08:38,498 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:08:38" (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 [2020-10-15 00:08:38,554 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 00:08:38,555 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 00:08:38,555 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-15 00:08:38,555 INFO L138 BoogieDeclarations]: Found implementation of procedure SelectionSort [2020-10-15 00:08:38,555 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 00:08:38,555 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 00:08:38,555 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-15 00:08:38,556 INFO L130 BoogieDeclarations]: Found specification of procedure SelectionSort [2020-10-15 00:08:38,556 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-15 00:08:38,556 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-15 00:08:38,556 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 00:08:38,556 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-15 00:08:38,556 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-15 00:08:38,557 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 00:08:38,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-15 00:08:38,557 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 00:08:38,841 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 00:08:38,841 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-15 00:08:38,846 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 12:08:38 BoogieIcfgContainer [2020-10-15 00:08:38,846 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 00:08:38,848 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 00:08:38,848 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 00:08:38,851 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 00:08:38,851 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 12:08:38" (1/3) ... [2020-10-15 00:08:38,852 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68b3100c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 12:08:38, skipping insertion in model container [2020-10-15 00:08:38,852 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:08:38" (2/3) ... [2020-10-15 00:08:38,853 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68b3100c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 12:08:38, skipping insertion in model container [2020-10-15 00:08:38,853 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 12:08:38" (3/3) ... [2020-10-15 00:08:38,855 INFO L109 eAbstractionObserver]: Analyzing ICFG eureka_05.i [2020-10-15 00:08:38,867 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 00:08:38,875 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 00:08:38,891 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 00:08:38,927 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 00:08:38,927 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 00:08:38,927 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 00:08:38,928 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 00:08:38,928 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 00:08:38,928 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 00:08:38,928 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 00:08:38,929 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 00:08:38,952 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2020-10-15 00:08:38,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-15 00:08:38,959 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:08:38,960 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:08:38,961 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:08:38,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:08:38,969 INFO L82 PathProgramCache]: Analyzing trace with hash 625586084, now seen corresponding path program 1 times [2020-10-15 00:08:38,980 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:08:38,981 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [955156256] [2020-10-15 00:08:38,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:08:39,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:39,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:39,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:39,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:39,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-15 00:08:39,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:08:39,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-15 00:08:39,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:39,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:39,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:08:39,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-15 00:08:39,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:08:39,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-15 00:08:39,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:08:39,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:39,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:39,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:39,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:08:39,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:39,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-15 00:08:39,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:39,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:39,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:08:39,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:39,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:08:39,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:08:39,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 00:08:39,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:39,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:39,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:39,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:08:39,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:39,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 00:08:39,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:39,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:39,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:08:39,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-15 00:08:39,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:08:39,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:08:39,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:08:39,415 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [955156256] [2020-10-15 00:08:39,417 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:08:39,417 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 00:08:39,418 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626901086] [2020-10-15 00:08:39,424 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 00:08:39,424 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:08:39,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 00:08:39,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 00:08:39,443 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 4 states. [2020-10-15 00:08:39,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:08:39,632 INFO L93 Difference]: Finished difference Result 77 states and 109 transitions. [2020-10-15 00:08:39,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 00:08:39,634 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-10-15 00:08:39,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:08:39,646 INFO L225 Difference]: With dead ends: 77 [2020-10-15 00:08:39,647 INFO L226 Difference]: Without dead ends: 43 [2020-10-15 00:08:39,651 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 00:08:39,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-10-15 00:08:39,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 29. [2020-10-15 00:08:39,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-15 00:08:39,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2020-10-15 00:08:39,700 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 18 [2020-10-15 00:08:39,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:08:39,700 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2020-10-15 00:08:39,700 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 00:08:39,701 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2020-10-15 00:08:39,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-15 00:08:39,702 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:08:39,702 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:08:39,702 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 00:08:39,703 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:08:39,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:08:39,703 INFO L82 PathProgramCache]: Analyzing trace with hash 2087778385, now seen corresponding path program 1 times [2020-10-15 00:08:39,704 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:08:39,704 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1014525363] [2020-10-15 00:08:39,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:08:39,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:39,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:39,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:39,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:39,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-15 00:08:39,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:08:39,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 268 [2020-10-15 00:08:39,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:39,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:39,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 00:08:39,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 00:08:39,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-15 00:08:39,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:08:40,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:08:40,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:40,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:40,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:40,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:08:40,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:40,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-15 00:08:40,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:40,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:40,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:08:40,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:40,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:08:40,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:08:40,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 00:08:40,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:40,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:40,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:40,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:08:40,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:40,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-15 00:08:40,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:40,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:40,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 00:08:40,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:08:40,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 00:08:40,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-15 00:08:40,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:08:40,132 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1014525363] [2020-10-15 00:08:40,135 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:08:40,135 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 00:08:40,136 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466821661] [2020-10-15 00:08:40,138 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 00:08:40,138 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:08:40,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 00:08:40,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-15 00:08:40,139 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 7 states. [2020-10-15 00:08:40,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:08:40,429 INFO L93 Difference]: Finished difference Result 50 states and 60 transitions. [2020-10-15 00:08:40,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 00:08:40,430 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2020-10-15 00:08:40,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:08:40,432 INFO L225 Difference]: With dead ends: 50 [2020-10-15 00:08:40,432 INFO L226 Difference]: Without dead ends: 37 [2020-10-15 00:08:40,433 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-15 00:08:40,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-10-15 00:08:40,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 30. [2020-10-15 00:08:40,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-15 00:08:40,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2020-10-15 00:08:40,443 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 18 [2020-10-15 00:08:40,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:08:40,443 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2020-10-15 00:08:40,443 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 00:08:40,444 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2020-10-15 00:08:40,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-15 00:08:40,445 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:08:40,445 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] [2020-10-15 00:08:40,445 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 00:08:40,446 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:08:40,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:08:40,446 INFO L82 PathProgramCache]: Analyzing trace with hash 1898450025, now seen corresponding path program 1 times [2020-10-15 00:08:40,447 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:08:40,447 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1371910114] [2020-10-15 00:08:40,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:08:40,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:40,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:40,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:40,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:41,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:41,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-15 00:08:41,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 00:08:41,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 623 [2020-10-15 00:08:41,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:41,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:41,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 00:08:41,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 00:08:41,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-15 00:08:41,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:08:41,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:08:41,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:41,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:41,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:41,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:08:41,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:41,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 00:08:41,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:41,130 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:41,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:08:41,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:41,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:08:41,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:08:41,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 00:08:41,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:41,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:41,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:41,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:41,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-15 00:08:41,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:08:41,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-15 00:08:41,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:41,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:41,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 00:08:41,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:08:41,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-15 00:08:41,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:08:41,223 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:08:41,224 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1371910114] [2020-10-15 00:08:41,224 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:08:41,224 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-15 00:08:41,225 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953048050] [2020-10-15 00:08:41,225 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 00:08:41,225 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:08:41,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 00:08:41,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-15 00:08:41,226 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 8 states. [2020-10-15 00:08:41,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:08:41,537 INFO L93 Difference]: Finished difference Result 59 states and 73 transitions. [2020-10-15 00:08:41,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-15 00:08:41,537 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 22 [2020-10-15 00:08:41,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:08:41,539 INFO L225 Difference]: With dead ends: 59 [2020-10-15 00:08:41,539 INFO L226 Difference]: Without dead ends: 40 [2020-10-15 00:08:41,540 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-10-15 00:08:41,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-15 00:08:41,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 31. [2020-10-15 00:08:41,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-15 00:08:41,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-10-15 00:08:41,547 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 22 [2020-10-15 00:08:41,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:08:41,548 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-10-15 00:08:41,548 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 00:08:41,548 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-10-15 00:08:41,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 00:08:41,549 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:08:41,549 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:08:41,549 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 00:08:41,550 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:08:41,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:08:41,550 INFO L82 PathProgramCache]: Analyzing trace with hash -1615884171, now seen corresponding path program 1 times [2020-10-15 00:08:41,550 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:08:41,551 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1831101276] [2020-10-15 00:08:41,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:08:41,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:41,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:41,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:41,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:41,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:41,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:41,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:43,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:43,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-15 00:08:43,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 00:08:43,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1880 [2020-10-15 00:08:43,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:43,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:43,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 00:08:43,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 00:08:43,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-15 00:08:43,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:08:43,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:08:43,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:43,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:43,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:43,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:08:43,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:43,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 00:08:43,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:43,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:43,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:08:43,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:43,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:08:43,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:08:43,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 00:08:43,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:43,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:43,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:43,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:43,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:43,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-15 00:08:43,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 00:08:43,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-15 00:08:43,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:43,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:43,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 00:08:43,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:08:43,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-15 00:08:43,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:08:43,614 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-15 00:08:43,614 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1831101276] [2020-10-15 00:08:43,615 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:08:43,615 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-15 00:08:43,615 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519934546] [2020-10-15 00:08:43,615 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 00:08:43,616 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:08:43,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 00:08:43,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-15 00:08:43,617 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 8 states. [2020-10-15 00:08:43,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:08:43,977 INFO L93 Difference]: Finished difference Result 57 states and 69 transitions. [2020-10-15 00:08:43,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-15 00:08:43,978 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2020-10-15 00:08:43,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:08:43,980 INFO L225 Difference]: With dead ends: 57 [2020-10-15 00:08:43,980 INFO L226 Difference]: Without dead ends: 44 [2020-10-15 00:08:43,981 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2020-10-15 00:08:43,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-15 00:08:43,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 37. [2020-10-15 00:08:43,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-15 00:08:43,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 43 transitions. [2020-10-15 00:08:43,990 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 43 transitions. Word has length 25 [2020-10-15 00:08:43,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:08:43,991 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 43 transitions. [2020-10-15 00:08:43,991 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 00:08:43,991 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 43 transitions. [2020-10-15 00:08:43,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-15 00:08:43,993 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:08:43,993 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-15 00:08:43,993 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 00:08:43,994 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:08:43,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:08:43,994 INFO L82 PathProgramCache]: Analyzing trace with hash 626389645, now seen corresponding path program 2 times [2020-10-15 00:08:43,995 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:08:43,995 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [568665644] [2020-10-15 00:08:43,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:08:44,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:44,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:44,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:44,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:44,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:44,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:44,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:44,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:44,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:49,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:49,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-15 00:08:49,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 00:08:49,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-15 00:08:49,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:49,008 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:49,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 00:08:49,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 00:08:49,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-15 00:08:49,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:08:49,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:08:49,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:49,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:49,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:49,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:08:49,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:49,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 00:08:49,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:49,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:49,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:08:49,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:49,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:08:49,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:08:49,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 00:08:49,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:49,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:49,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:49,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:49,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:49,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-15 00:08:49,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 00:08:49,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 305 [2020-10-15 00:08:49,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:49,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:49,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 00:08:49,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:08:49,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-15 00:08:49,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:08:49,452 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-15 00:08:49,452 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [568665644] [2020-10-15 00:08:49,453 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:08:49,453 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-15 00:08:49,453 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108324168] [2020-10-15 00:08:49,453 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 00:08:49,454 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:08:49,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 00:08:49,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-15 00:08:49,454 INFO L87 Difference]: Start difference. First operand 37 states and 43 transitions. Second operand 9 states. [2020-10-15 00:08:49,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:08:49,834 INFO L93 Difference]: Finished difference Result 66 states and 81 transitions. [2020-10-15 00:08:49,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-15 00:08:49,835 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2020-10-15 00:08:49,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:08:49,836 INFO L225 Difference]: With dead ends: 66 [2020-10-15 00:08:49,836 INFO L226 Difference]: Without dead ends: 44 [2020-10-15 00:08:49,837 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-10-15 00:08:49,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-15 00:08:49,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2020-10-15 00:08:49,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-15 00:08:49,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 47 transitions. [2020-10-15 00:08:49,846 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 47 transitions. Word has length 29 [2020-10-15 00:08:49,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:08:49,846 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 47 transitions. [2020-10-15 00:08:49,846 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 00:08:49,846 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 47 transitions. [2020-10-15 00:08:49,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-15 00:08:49,848 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:08:49,848 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-15 00:08:49,848 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 00:08:49,848 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:08:49,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:08:49,849 INFO L82 PathProgramCache]: Analyzing trace with hash -627046143, now seen corresponding path program 3 times [2020-10-15 00:08:49,849 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:08:49,850 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [288063568] [2020-10-15 00:08:49,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:08:49,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:49,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:49,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:49,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:49,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:49,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:50,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:50,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:50,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:50,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:50,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:51,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:51,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:51,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:51,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:51,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:53,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:54,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:54,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-15 00:08:54,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-15 00:08:54,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-15 00:08:54,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:54,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:54,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 00:08:54,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 00:08:54,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-15 00:08:54,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:08:54,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:08:54,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:54,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:54,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:54,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:08:54,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:54,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 00:08:54,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:54,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:54,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:08:54,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:54,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:08:54,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:08:54,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 00:08:54,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:54,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:54,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:54,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:54,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:55,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:55,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:55,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:55,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:56,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:56,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-15 00:08:56,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 00:08:56,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1261 [2020-10-15 00:08:56,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:56,197 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:56,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 00:08:56,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:08:56,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-15 00:08:56,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:08:56,248 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-15 00:08:56,248 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [288063568] [2020-10-15 00:08:56,249 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:08:56,249 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-15 00:08:56,250 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084350361] [2020-10-15 00:08:56,251 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 00:08:56,251 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:08:56,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 00:08:56,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-15 00:08:56,252 INFO L87 Difference]: Start difference. First operand 40 states and 47 transitions. Second operand 9 states. [2020-10-15 00:08:56,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:08:56,663 INFO L93 Difference]: Finished difference Result 69 states and 86 transitions. [2020-10-15 00:08:56,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-15 00:08:56,664 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 32 [2020-10-15 00:08:56,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:08:56,665 INFO L225 Difference]: With dead ends: 69 [2020-10-15 00:08:56,665 INFO L226 Difference]: Without dead ends: 50 [2020-10-15 00:08:56,666 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2020-10-15 00:08:56,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-15 00:08:56,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 41. [2020-10-15 00:08:56,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-15 00:08:56,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 48 transitions. [2020-10-15 00:08:56,679 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 48 transitions. Word has length 32 [2020-10-15 00:08:56,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:08:56,680 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 48 transitions. [2020-10-15 00:08:56,680 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 00:08:56,680 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 48 transitions. [2020-10-15 00:08:56,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-15 00:08:56,683 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:08:56,683 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:08:56,683 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 00:08:56,684 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:08:56,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:08:56,684 INFO L82 PathProgramCache]: Analyzing trace with hash 564866269, now seen corresponding path program 4 times [2020-10-15 00:08:56,684 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:08:56,684 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [754698916] [2020-10-15 00:08:56,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:08:56,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:56,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:56,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:56,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:56,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:56,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:56,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:57,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:57,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:57,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:57,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:57,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:57,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:57,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:58,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:58,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:58,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:59,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:59,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:59,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:00,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:01,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:01,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-15 00:09:01,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-15 00:09:01,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-15 00:09:01,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:01,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:01,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-15 00:09:01,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 00:09:01,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-15 00:09:01,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:09:01,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:09:01,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:01,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:01,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:01,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:09:01,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:01,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 00:09:01,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:01,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:01,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:09:01,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:09:01,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:09:01,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:09:01,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 00:09:01,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:01,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:01,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:01,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:01,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:01,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:01,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:02,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:02,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:02,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:03,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:03,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:03,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:03,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:03,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:03,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:04,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:04,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:05,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:05,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:05,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:05,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-15 00:09:05,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-15 00:09:05,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3820 [2020-10-15 00:09:05,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:05,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:05,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 00:09:05,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:09:05,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-15 00:09:05,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:09:05,672 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-15 00:09:05,673 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [754698916] [2020-10-15 00:09:05,673 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:09:05,673 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-15 00:09:05,674 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764219762] [2020-10-15 00:09:05,675 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 00:09:05,675 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:09:05,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 00:09:05,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-15 00:09:05,676 INFO L87 Difference]: Start difference. First operand 41 states and 48 transitions. Second operand 9 states. [2020-10-15 00:09:06,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:09:06,186 INFO L93 Difference]: Finished difference Result 88 states and 106 transitions. [2020-10-15 00:09:06,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-15 00:09:06,187 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 35 [2020-10-15 00:09:06,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:09:06,189 INFO L225 Difference]: With dead ends: 88 [2020-10-15 00:09:06,189 INFO L226 Difference]: Without dead ends: 77 [2020-10-15 00:09:06,191 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=89, Invalid=253, Unknown=0, NotChecked=0, Total=342 [2020-10-15 00:09:06,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-10-15 00:09:06,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 51. [2020-10-15 00:09:06,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-15 00:09:06,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 63 transitions. [2020-10-15 00:09:06,213 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 63 transitions. Word has length 35 [2020-10-15 00:09:06,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:09:06,216 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 63 transitions. [2020-10-15 00:09:06,217 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 00:09:06,217 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 63 transitions. [2020-10-15 00:09:06,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-15 00:09:06,220 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:09:06,222 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:09:06,222 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 00:09:06,222 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:09:06,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:09:06,222 INFO L82 PathProgramCache]: Analyzing trace with hash -777616645, now seen corresponding path program 1 times [2020-10-15 00:09:06,223 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:09:06,223 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [311979442] [2020-10-15 00:09:06,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:09:06,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:06,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:06,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:06,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:06,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:06,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:06,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:06,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:06,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:06,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:06,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:06,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:06,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:06,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:06,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:07,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:07,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:07,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:07,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:07,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:08,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:08,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:08,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:08,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:08,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:08,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:09,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:10,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:11,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:11,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-15 00:09:11,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 27 [2020-10-15 00:09:11,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-15 00:09:11,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:11,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:11,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 00:09:11,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 00:09:11,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-15 00:09:11,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:11,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:09:11,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:11,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:11,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:11,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:09:11,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:11,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:09:11,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:11,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:11,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:09:11,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:09:11,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:09:11,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:11,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-15 00:09:11,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:11,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:11,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:11,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:11,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:11,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:11,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:11,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:11,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:11,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:11,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:12,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:12,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-15 00:09:12,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-15 00:09:12,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1557 [2020-10-15 00:09:12,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:12,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:12,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 00:09:12,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:09:12,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-15 00:09:12,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:12,903 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-15 00:09:12,903 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [311979442] [2020-10-15 00:09:12,904 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:09:12,904 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-15 00:09:12,905 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706411622] [2020-10-15 00:09:12,905 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 00:09:12,906 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:09:12,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 00:09:12,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-15 00:09:12,906 INFO L87 Difference]: Start difference. First operand 51 states and 63 transitions. Second operand 9 states. [2020-10-15 00:09:13,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:09:13,214 INFO L93 Difference]: Finished difference Result 67 states and 81 transitions. [2020-10-15 00:09:13,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-15 00:09:13,215 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 37 [2020-10-15 00:09:13,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:09:13,216 INFO L225 Difference]: With dead ends: 67 [2020-10-15 00:09:13,216 INFO L226 Difference]: Without dead ends: 54 [2020-10-15 00:09:13,217 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2020-10-15 00:09:13,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-15 00:09:13,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 47. [2020-10-15 00:09:13,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-15 00:09:13,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 56 transitions. [2020-10-15 00:09:13,225 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 56 transitions. Word has length 37 [2020-10-15 00:09:13,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:09:13,226 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 56 transitions. [2020-10-15 00:09:13,226 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 00:09:13,226 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 56 transitions. [2020-10-15 00:09:13,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-15 00:09:13,227 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:09:13,227 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:09:13,227 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 00:09:13,227 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:09:13,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:09:13,228 INFO L82 PathProgramCache]: Analyzing trace with hash -841147659, now seen corresponding path program 5 times [2020-10-15 00:09:13,228 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:09:13,228 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [489373437] [2020-10-15 00:09:13,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:09:13,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:13,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:13,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:13,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:13,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:13,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:13,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:13,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:13,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:13,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:14,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:14,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:14,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:14,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:14,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:14,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:14,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:14,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:14,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:14,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:15,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:15,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:15,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:15,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:15,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:15,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:15,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:18,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:18,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-15 00:09:18,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 26 [2020-10-15 00:09:18,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-15 00:09:18,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:18,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:18,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 00:09:18,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 00:09:18,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-15 00:09:18,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:18,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:09:18,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:18,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:18,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:18,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:09:18,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:18,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 00:09:18,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:18,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:18,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:09:18,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:09:18,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:09:18,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:18,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 00:09:18,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:18,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:18,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:18,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:18,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:18,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:18,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:18,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:18,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:18,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:18,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:18,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:22,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:22,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-15 00:09:22,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-15 00:09:22,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4008 [2020-10-15 00:09:22,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:22,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:22,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 00:09:22,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:09:22,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-15 00:09:22,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:22,353 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-15 00:09:22,353 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [489373437] [2020-10-15 00:09:22,354 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:09:22,354 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-15 00:09:22,354 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902891435] [2020-10-15 00:09:22,355 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-15 00:09:22,355 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:09:22,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-15 00:09:22,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-15 00:09:22,355 INFO L87 Difference]: Start difference. First operand 47 states and 56 transitions. Second operand 10 states. [2020-10-15 00:09:22,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:09:22,728 INFO L93 Difference]: Finished difference Result 83 states and 103 transitions. [2020-10-15 00:09:22,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-15 00:09:22,729 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 39 [2020-10-15 00:09:22,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:09:22,730 INFO L225 Difference]: With dead ends: 83 [2020-10-15 00:09:22,730 INFO L226 Difference]: Without dead ends: 54 [2020-10-15 00:09:22,731 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2020-10-15 00:09:22,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-15 00:09:22,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 50. [2020-10-15 00:09:22,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-15 00:09:22,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2020-10-15 00:09:22,748 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 39 [2020-10-15 00:09:22,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:09:22,749 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2020-10-15 00:09:22,749 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-15 00:09:22,749 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2020-10-15 00:09:22,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-15 00:09:22,752 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:09:22,755 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:09:22,755 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 00:09:22,756 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:09:22,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:09:22,756 INFO L82 PathProgramCache]: Analyzing trace with hash 228896873, now seen corresponding path program 6 times [2020-10-15 00:09:22,756 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:09:22,756 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1207870152] [2020-10-15 00:09:22,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:09:22,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:22,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:22,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:22,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:22,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:22,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:22,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:22,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:23,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:23,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:23,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:23,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:23,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:23,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:23,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:24,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:24,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:24,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:24,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:24,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:24,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:24,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:25,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:25,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:27,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:27,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-15 00:09:27,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 23 [2020-10-15 00:09:27,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-15 00:09:27,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:27,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:27,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 00:09:27,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 00:09:27,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-15 00:09:27,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:27,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:09:27,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:27,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:27,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:27,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:09:27,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:27,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 00:09:27,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:27,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:27,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:09:27,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:09:27,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:09:27,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:27,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 00:09:27,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:27,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:27,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:27,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:27,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:28,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:28,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:28,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:28,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:28,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:28,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:28,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:28,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:29,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:29,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:29,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:29,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:30,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:30,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:30,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:30,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:30,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:30,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:30,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:30,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:30,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:31,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:31,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:31,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:31,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:31,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:31,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:31,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:32,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:32,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-15 00:09:32,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 32 [2020-10-15 00:09:32,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-15 00:09:32,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:32,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:32,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 00:09:32,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:09:32,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-15 00:09:32,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:32,865 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-15 00:09:32,865 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1207870152] [2020-10-15 00:09:32,865 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:09:32,865 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-15 00:09:32,866 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668812165] [2020-10-15 00:09:32,866 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-15 00:09:32,866 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:09:32,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-15 00:09:32,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-15 00:09:32,867 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand 10 states. [2020-10-15 00:09:33,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:09:33,322 INFO L93 Difference]: Finished difference Result 81 states and 102 transitions. [2020-10-15 00:09:33,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-15 00:09:33,323 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 42 [2020-10-15 00:09:33,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:09:33,325 INFO L225 Difference]: With dead ends: 81 [2020-10-15 00:09:33,325 INFO L226 Difference]: Without dead ends: 62 [2020-10-15 00:09:33,326 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=117, Invalid=303, Unknown=0, NotChecked=0, Total=420 [2020-10-15 00:09:33,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-15 00:09:33,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 51. [2020-10-15 00:09:33,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-15 00:09:33,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 61 transitions. [2020-10-15 00:09:33,334 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 61 transitions. Word has length 42 [2020-10-15 00:09:33,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:09:33,335 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 61 transitions. [2020-10-15 00:09:33,335 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-15 00:09:33,335 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 61 transitions. [2020-10-15 00:09:33,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-15 00:09:33,336 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:09:33,336 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:09:33,336 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 00:09:33,336 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:09:33,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:09:33,337 INFO L82 PathProgramCache]: Analyzing trace with hash 742419573, now seen corresponding path program 7 times [2020-10-15 00:09:33,337 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:09:33,337 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [133334454] [2020-10-15 00:09:33,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:09:33,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:33,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:33,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:33,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:33,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:33,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:33,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:33,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:33,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:33,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:34,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:37,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:37,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:37,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:37,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:37,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:37,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:37,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:37,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:37,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:37,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:37,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:38,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:38,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-15 00:09:38,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 21 [2020-10-15 00:09:38,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-15 00:09:38,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:38,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:38,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-15 00:09:38,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 00:09:38,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-15 00:09:38,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:38,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:09:38,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:38,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:38,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:38,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:09:38,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:38,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 00:09:38,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:38,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:38,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:09:38,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:09:38,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:09:38,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:38,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 00:09:38,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:38,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:38,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:38,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:38,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:38,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:38,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:38,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:38,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:38,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:38,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:38,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:39,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:39,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:39,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:39,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:39,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:39,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:40,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:40,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:40,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:40,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:40,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:40,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:40,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:42,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:42,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:42,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:42,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:42,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:42,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:42,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:42,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:42,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:42,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:42,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:43,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:43,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:43,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:43,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:43,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:43,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-15 00:09:43,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 39 [2020-10-15 00:09:43,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-15 00:09:43,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:43,444 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:43,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 00:09:43,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-15 00:09:43,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-15 00:09:43,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:09:43,528 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 8 proven. 50 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 00:09:43,528 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [133334454] [2020-10-15 00:09:43,529 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:09:43,529 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-15 00:09:43,529 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291564931] [2020-10-15 00:09:43,529 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-15 00:09:43,529 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:09:43,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-15 00:09:43,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-10-15 00:09:43,530 INFO L87 Difference]: Start difference. First operand 51 states and 61 transitions. Second operand 12 states. [2020-10-15 00:09:44,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:09:44,484 INFO L93 Difference]: Finished difference Result 110 states and 143 transitions. [2020-10-15 00:09:44,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-15 00:09:44,484 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 45 [2020-10-15 00:09:44,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:09:44,486 INFO L225 Difference]: With dead ends: 110 [2020-10-15 00:09:44,486 INFO L226 Difference]: Without dead ends: 97 [2020-10-15 00:09:44,488 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=300, Invalid=692, Unknown=0, NotChecked=0, Total=992 [2020-10-15 00:09:44,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-10-15 00:09:44,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 82. [2020-10-15 00:09:44,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-15 00:09:44,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 105 transitions. [2020-10-15 00:09:44,501 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 105 transitions. Word has length 45 [2020-10-15 00:09:44,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:09:44,502 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 105 transitions. [2020-10-15 00:09:44,502 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-15 00:09:44,502 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 105 transitions. [2020-10-15 00:09:44,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-15 00:09:44,503 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:09:44,503 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:09:44,503 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-15 00:09:44,503 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:09:44,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:09:44,504 INFO L82 PathProgramCache]: Analyzing trace with hash 102289037, now seen corresponding path program 8 times [2020-10-15 00:09:44,504 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:09:44,504 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [248227759] [2020-10-15 00:09:44,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:09:44,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:44,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:44,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:44,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:44,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:44,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:44,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:45,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:45,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:45,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:45,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:46,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:46,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:46,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:46,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:46,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:47,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:47,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:47,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:48,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:48,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:49,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:49,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-15 00:09:49,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-15 00:09:49,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-15 00:09:49,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:49,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:49,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 00:09:49,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 00:09:49,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-15 00:09:49,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:49,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:09:49,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:49,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:49,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:49,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:09:49,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:49,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:09:49,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:49,549 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:49,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:09:49,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:09:49,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:09:49,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:49,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 00:09:49,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:49,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:49,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:49,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:49,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:49,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:49,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:49,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:50,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:50,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:50,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:50,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:50,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:50,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:50,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:50,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:50,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:50,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:51,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:51,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:51,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:51,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:51,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:51,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:51,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:51,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:51,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:51,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:51,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:51,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:51,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:52,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:52,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:52,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:52,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:52,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:52,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:52,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:52,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:52,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:53,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:53,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:53,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:53,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:53,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:53,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:54,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:54,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:54,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-15 00:09:54,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 46 [2020-10-15 00:09:54,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-15 00:09:54,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:54,568 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:54,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-15 00:09:54,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-15 00:09:54,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-15 00:09:54,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:55,229 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 33 [2020-10-15 00:09:55,869 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 15 proven. 62 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-15 00:09:55,869 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [248227759] [2020-10-15 00:09:55,869 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:09:55,869 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-15 00:09:55,870 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727594459] [2020-10-15 00:09:55,870 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-15 00:09:55,870 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:09:55,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-15 00:09:55,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=451, Unknown=0, NotChecked=0, Total=506 [2020-10-15 00:09:55,871 INFO L87 Difference]: Start difference. First operand 82 states and 105 transitions. Second operand 23 states. [2020-10-15 00:09:57,380 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 59 [2020-10-15 00:09:57,984 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 69 [2020-10-15 00:09:58,779 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2020-10-15 00:09:58,951 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 61 [2020-10-15 00:10:00,070 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 60 [2020-10-15 00:10:00,302 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 59 [2020-10-15 00:10:01,514 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 62 [2020-10-15 00:10:02,337 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 72 [2020-10-15 00:10:02,652 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2020-10-15 00:10:02,883 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 68 [2020-10-15 00:10:03,307 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 69 [2020-10-15 00:10:03,690 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 60 [2020-10-15 00:10:04,145 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 63 [2020-10-15 00:10:05,076 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 57 [2020-10-15 00:10:05,795 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 59 [2020-10-15 00:10:05,942 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 67 [2020-10-15 00:10:06,581 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2020-10-15 00:10:06,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:10:06,778 INFO L93 Difference]: Finished difference Result 397 states and 536 transitions. [2020-10-15 00:10:06,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2020-10-15 00:10:06,779 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 49 [2020-10-15 00:10:06,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:10:06,783 INFO L225 Difference]: With dead ends: 397 [2020-10-15 00:10:06,784 INFO L226 Difference]: Without dead ends: 349 [2020-10-15 00:10:06,790 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4969 ImplicationChecksByTransitivity, 10.3s TimeCoverageRelationStatistics Valid=2537, Invalid=11983, Unknown=0, NotChecked=0, Total=14520 [2020-10-15 00:10:06,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2020-10-15 00:10:06,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 191. [2020-10-15 00:10:06,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2020-10-15 00:10:06,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 264 transitions. [2020-10-15 00:10:06,825 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 264 transitions. Word has length 49 [2020-10-15 00:10:06,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:10:06,825 INFO L479 AbstractCegarLoop]: Abstraction has 191 states and 264 transitions. [2020-10-15 00:10:06,825 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-15 00:10:06,826 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 264 transitions. [2020-10-15 00:10:06,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-15 00:10:06,828 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:10:06,828 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:10:06,828 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-15 00:10:06,828 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:10:06,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:10:06,829 INFO L82 PathProgramCache]: Analyzing trace with hash 377048651, now seen corresponding path program 1 times [2020-10-15 00:10:06,829 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:10:06,829 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2080952000] [2020-10-15 00:10:06,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:10:06,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:10:06,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:06,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:06,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:06,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:06,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:07,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:07,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:07,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:07,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:07,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:07,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:08,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:08,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:08,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:08,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:09,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:09,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:09,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:11,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:10:11,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-15 00:10:11,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-15 00:10:11,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-15 00:10:11,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:10:11,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:10:11,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 00:10:11,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 00:10:11,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-15 00:10:11,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:10:11,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:10:11,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:10:11,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:11,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:10:11,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:10:11,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:10:11,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:10:11,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:10:11,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:10:11,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:10:11,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:10:11,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:10:11,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:10:11,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 00:10:11,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:10:11,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:11,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:11,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:11,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:12,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:12,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:12,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:12,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:12,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:12,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:12,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:12,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:13,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:13,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:13,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:13,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:13,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:13,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:13,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:14,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:14,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:14,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:14,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:14,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:14,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:15,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:15,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:15,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:16,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:16,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:16,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:16,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:10:16,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-15 00:10:16,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 31 [2020-10-15 00:10:16,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-15 00:10:16,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:10:16,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:10:16,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-15 00:10:16,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-15 00:10:16,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-15 00:10:16,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:10:17,501 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 14 proven. 63 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-15 00:10:17,502 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2080952000] [2020-10-15 00:10:17,502 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:10:17,502 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-15 00:10:17,502 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071385167] [2020-10-15 00:10:17,503 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-15 00:10:17,503 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:10:17,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-15 00:10:17,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=376, Unknown=0, NotChecked=0, Total=420 [2020-10-15 00:10:17,504 INFO L87 Difference]: Start difference. First operand 191 states and 264 transitions. Second operand 21 states. [2020-10-15 00:10:18,116 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 59 [2020-10-15 00:10:18,264 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 60 [2020-10-15 00:10:18,522 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2020-10-15 00:10:19,038 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 60 [2020-10-15 00:10:19,275 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 59 [2020-10-15 00:10:20,008 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 47 [2020-10-15 00:10:20,152 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 53 [2020-10-15 00:10:20,439 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 61 [2020-10-15 00:10:20,791 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 62 [2020-10-15 00:10:21,258 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 61 [2020-10-15 00:10:21,734 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 60 [2020-10-15 00:10:21,897 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 60 [2020-10-15 00:10:22,058 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 53 [2020-10-15 00:10:22,354 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 61 [2020-10-15 00:10:22,508 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 62 [2020-10-15 00:10:22,795 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2020-10-15 00:10:23,700 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 56 [2020-10-15 00:10:24,640 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 56 [2020-10-15 00:10:24,795 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 63 [2020-10-15 00:10:25,406 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2020-10-15 00:10:26,269 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 55 [2020-10-15 00:10:26,412 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 56 [2020-10-15 00:10:27,145 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 67 [2020-10-15 00:10:28,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:10:28,136 INFO L93 Difference]: Finished difference Result 805 states and 1111 transitions. [2020-10-15 00:10:28,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2020-10-15 00:10:28,137 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 49 [2020-10-15 00:10:28,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:10:28,141 INFO L225 Difference]: With dead ends: 805 [2020-10-15 00:10:28,141 INFO L226 Difference]: Without dead ends: 686 [2020-10-15 00:10:28,147 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4403 ImplicationChecksByTransitivity, 9.8s TimeCoverageRelationStatistics Valid=2006, Invalid=10650, Unknown=0, NotChecked=0, Total=12656 [2020-10-15 00:10:28,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2020-10-15 00:10:28,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 324. [2020-10-15 00:10:28,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 324 states. [2020-10-15 00:10:28,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 451 transitions. [2020-10-15 00:10:28,200 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 451 transitions. Word has length 49 [2020-10-15 00:10:28,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:10:28,201 INFO L479 AbstractCegarLoop]: Abstraction has 324 states and 451 transitions. [2020-10-15 00:10:28,201 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-15 00:10:28,201 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 451 transitions. [2020-10-15 00:10:28,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-15 00:10:28,204 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:10:28,204 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:10:28,204 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-15 00:10:28,204 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:10:28,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:10:28,205 INFO L82 PathProgramCache]: Analyzing trace with hash -1968073711, now seen corresponding path program 2 times [2020-10-15 00:10:28,205 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:10:28,205 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [567788486] [2020-10-15 00:10:28,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:10:28,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:10:28,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:28,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:28,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:28,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:28,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:28,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:28,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:28,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:28,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:28,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:28,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:31,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:32,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:32,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:32,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:32,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:32,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:32,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:33,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:10:33,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-15 00:10:33,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-15 00:10:33,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-15 00:10:33,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:10:33,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:10:33,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 00:10:33,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 00:10:33,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-15 00:10:33,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:10:33,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:10:33,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:10:33,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:33,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:10:33,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:10:33,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:10:33,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:10:33,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:10:33,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:10:33,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:10:33,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:10:33,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:10:33,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:10:33,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 00:10:33,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:10:33,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:33,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:33,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:33,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:33,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:38,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:10:38,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-15 00:10:38,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 00:10:38,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-15 00:10:38,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:10:38,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:10:38,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 00:10:38,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:10:38,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-15 00:10:38,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:10:38,333 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-15 00:10:38,334 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [567788486] [2020-10-15 00:10:38,334 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:10:38,334 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-15 00:10:38,334 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059152015] [2020-10-15 00:10:38,334 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 00:10:38,335 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:10:38,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 00:10:38,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-10-15 00:10:38,335 INFO L87 Difference]: Start difference. First operand 324 states and 451 transitions. Second operand 11 states. [2020-10-15 00:10:39,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:10:39,008 INFO L93 Difference]: Finished difference Result 890 states and 1243 transitions. [2020-10-15 00:10:39,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-15 00:10:39,008 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 52 [2020-10-15 00:10:39,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:10:39,012 INFO L225 Difference]: With dead ends: 890 [2020-10-15 00:10:39,012 INFO L226 Difference]: Without dead ends: 643 [2020-10-15 00:10:39,014 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=167, Invalid=433, Unknown=0, NotChecked=0, Total=600 [2020-10-15 00:10:39,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2020-10-15 00:10:39,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 400. [2020-10-15 00:10:39,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 400 states. [2020-10-15 00:10:39,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 554 transitions. [2020-10-15 00:10:39,068 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 554 transitions. Word has length 52 [2020-10-15 00:10:39,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:10:39,068 INFO L479 AbstractCegarLoop]: Abstraction has 400 states and 554 transitions. [2020-10-15 00:10:39,068 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 00:10:39,069 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 554 transitions. [2020-10-15 00:10:39,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-15 00:10:39,071 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:10:39,071 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 6, 5, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:10:39,071 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-15 00:10:39,071 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:10:39,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:10:39,072 INFO L82 PathProgramCache]: Analyzing trace with hash 399484793, now seen corresponding path program 3 times [2020-10-15 00:10:39,072 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:10:39,072 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [568885498] [2020-10-15 00:10:39,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:10:39,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:10:39,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:39,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:39,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:39,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:39,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:39,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:39,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:39,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:41,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:41,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:41,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:41,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:42,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:42,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:44,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:10:44,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-15 00:10:44,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-15 00:10:44,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-15 00:10:44,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:10:44,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:10:44,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-15 00:10:44,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 00:10:44,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-15 00:10:44,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:10:44,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:10:44,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:10:44,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:44,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:10:44,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:10:44,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:10:44,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 00:10:44,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:10:44,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:10:44,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:10:44,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:10:44,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:10:44,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:10:44,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 00:10:44,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:10:44,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:44,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:44,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:44,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:44,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:44,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:44,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:44,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:44,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:45,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:45,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:47,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:47,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:47,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:47,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:48,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:48,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:48,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:48,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:48,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:49,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:10:49,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-15 00:10:49,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-15 00:10:49,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-15 00:10:49,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:10:49,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:10:49,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-15 00:10:49,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-15 00:10:49,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-15 00:10:49,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:10:49,320 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 84 proven. 74 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-15 00:10:49,320 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [568885498] [2020-10-15 00:10:49,320 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:10:49,321 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-15 00:10:49,321 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644127799] [2020-10-15 00:10:49,321 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-15 00:10:49,322 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:10:49,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-15 00:10:49,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2020-10-15 00:10:49,322 INFO L87 Difference]: Start difference. First operand 400 states and 554 transitions. Second operand 14 states. [2020-10-15 00:10:50,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:10:50,890 INFO L93 Difference]: Finished difference Result 1716 states and 2415 transitions. [2020-10-15 00:10:50,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-15 00:10:50,891 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 62 [2020-10-15 00:10:50,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:10:50,894 INFO L225 Difference]: With dead ends: 1716 [2020-10-15 00:10:50,894 INFO L226 Difference]: Without dead ends: 802 [2020-10-15 00:10:50,898 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=365, Invalid=1195, Unknown=0, NotChecked=0, Total=1560 [2020-10-15 00:10:50,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 802 states. [2020-10-15 00:10:50,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 802 to 386. [2020-10-15 00:10:50,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 386 states. [2020-10-15 00:10:50,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 520 transitions. [2020-10-15 00:10:50,982 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 520 transitions. Word has length 62 [2020-10-15 00:10:50,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:10:50,982 INFO L479 AbstractCegarLoop]: Abstraction has 386 states and 520 transitions. [2020-10-15 00:10:50,983 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-15 00:10:50,983 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 520 transitions. [2020-10-15 00:10:50,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-15 00:10:50,985 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:10:50,985 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 8, 5, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:10:50,985 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-15 00:10:50,985 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:10:50,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:10:50,986 INFO L82 PathProgramCache]: Analyzing trace with hash -1896355031, now seen corresponding path program 4 times [2020-10-15 00:10:50,986 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:10:50,986 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1330435974] [2020-10-15 00:10:50,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:10:50,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:10:50,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:51,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:51,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:51,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:51,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:51,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:51,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:51,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:51,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:51,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:51,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:51,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:51,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:52,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:52,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:52,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:52,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:52,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:52,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:52,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:53,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:53,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:53,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:54,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:54,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:54,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:54,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:54,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:56,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:10:56,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-15 00:10:56,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 28 [2020-10-15 00:10:56,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-15 00:10:56,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:10:56,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:10:56,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-15 00:10:56,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 00:10:56,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-15 00:10:56,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:10:56,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:10:56,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:10:56,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:56,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:10:56,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:10:56,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:10:56,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 00:10:56,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:10:56,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:10:56,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:10:56,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:10:56,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:10:56,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:10:56,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 00:10:56,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:10:56,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:56,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:56,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:56,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:56,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:56,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:56,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:57,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:57,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:59,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:59,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:59,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:59,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:59,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:00,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:00,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:00,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:00,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:00,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:01,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:11:01,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-15 00:11:01,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-15 00:11:01,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-15 00:11:01,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:11:01,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:11:01,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-15 00:11:01,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-15 00:11:01,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-15 00:11:01,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:11:01,471 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 34 [2020-10-15 00:11:02,565 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 82 proven. 127 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-15 00:11:02,566 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1330435974] [2020-10-15 00:11:02,566 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:11:02,566 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-15 00:11:02,566 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575876645] [2020-10-15 00:11:02,567 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-15 00:11:02,567 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:11:02,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-15 00:11:02,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=578, Unknown=0, NotChecked=0, Total=650 [2020-10-15 00:11:02,568 INFO L87 Difference]: Start difference. First operand 386 states and 520 transitions. Second operand 26 states. [2020-10-15 00:11:03,580 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 59 [2020-10-15 00:11:04,641 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 62 [2020-10-15 00:11:04,873 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 71 [2020-10-15 00:11:05,049 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 67 [2020-10-15 00:11:05,266 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 65 [2020-10-15 00:11:05,463 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 61 [2020-10-15 00:11:05,780 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 57 [2020-10-15 00:11:05,940 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 53 [2020-10-15 00:11:06,317 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 50 [2020-10-15 00:11:07,389 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 70 [2020-10-15 00:11:07,806 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 65 [2020-10-15 00:11:08,173 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 70 [2020-10-15 00:11:08,813 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2020-10-15 00:11:09,141 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 61 [2020-10-15 00:11:09,442 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 60 [2020-10-15 00:11:09,645 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 66 [2020-10-15 00:11:09,904 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 64 [2020-10-15 00:11:10,095 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 65 [2020-10-15 00:11:10,309 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 56 [2020-10-15 00:11:10,469 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 60 [2020-10-15 00:11:11,245 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 67 [2020-10-15 00:11:11,473 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 56 [2020-10-15 00:11:11,827 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 57 [2020-10-15 00:11:12,111 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 57 [2020-10-15 00:11:12,695 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 56 [2020-10-15 00:11:13,243 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 62 [2020-10-15 00:11:13,879 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 74 [2020-10-15 00:11:14,355 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 56 [2020-10-15 00:11:14,933 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 61 [2020-10-15 00:11:15,526 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 57 [2020-10-15 00:11:15,828 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 59 [2020-10-15 00:11:16,034 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 58 [2020-10-15 00:11:16,302 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 60 [2020-10-15 00:11:16,529 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 64 [2020-10-15 00:11:16,824 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 65 [2020-10-15 00:11:17,225 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 65 [2020-10-15 00:11:17,488 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 70 [2020-10-15 00:11:18,028 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 65 [2020-10-15 00:11:18,688 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 61 [2020-10-15 00:11:18,866 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 58 [2020-10-15 00:11:19,231 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 52 [2020-10-15 00:11:19,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:11:19,623 INFO L93 Difference]: Finished difference Result 1445 states and 1948 transitions. [2020-10-15 00:11:19,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2020-10-15 00:11:19,624 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 68 [2020-10-15 00:11:19,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:11:19,631 INFO L225 Difference]: With dead ends: 1445 [2020-10-15 00:11:19,631 INFO L226 Difference]: Without dead ends: 1129 [2020-10-15 00:11:19,638 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5934 ImplicationChecksByTransitivity, 15.9s TimeCoverageRelationStatistics Valid=2039, Invalid=15783, Unknown=0, NotChecked=0, Total=17822 [2020-10-15 00:11:19,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1129 states. [2020-10-15 00:11:19,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1129 to 899. [2020-10-15 00:11:19,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 899 states. [2020-10-15 00:11:19,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 899 states to 899 states and 1252 transitions. [2020-10-15 00:11:19,776 INFO L78 Accepts]: Start accepts. Automaton has 899 states and 1252 transitions. Word has length 68 [2020-10-15 00:11:19,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:11:19,777 INFO L479 AbstractCegarLoop]: Abstraction has 899 states and 1252 transitions. [2020-10-15 00:11:19,777 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-15 00:11:19,777 INFO L276 IsEmpty]: Start isEmpty. Operand 899 states and 1252 transitions. [2020-10-15 00:11:19,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-15 00:11:19,781 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:11:19,781 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 7, 5, 5, 5, 5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:11:19,781 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-15 00:11:19,781 INFO L427 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:11:19,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:11:19,782 INFO L82 PathProgramCache]: Analyzing trace with hash 1889139175, now seen corresponding path program 5 times [2020-10-15 00:11:19,782 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:11:19,782 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [959344734] [2020-10-15 00:11:19,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:11:19,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:11:19,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:19,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:19,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:19,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:19,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:20,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:20,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:20,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:20,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:20,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:20,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:22,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:22,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:22,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:22,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:22,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:23,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:23,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:24,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:24,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:24,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:11:24,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-15 00:11:24,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-15 00:11:24,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-15 00:11:24,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:11:24,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:11:24,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-15 00:11:24,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 00:11:24,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-15 00:11:24,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:11:24,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:11:24,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:11:24,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:24,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:11:24,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:11:24,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:11:24,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 00:11:24,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:11:24,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:11:24,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:11:24,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:11:24,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:11:24,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:11:24,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 00:11:24,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:11:24,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:24,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:24,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:24,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:25,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:25,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:26,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:26,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:26,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:27,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:28,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:28,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:28,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:28,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:28,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:28,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:29,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:29,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:29,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:29,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:29,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:11:29,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-15 00:11:29,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-15 00:11:29,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-15 00:11:29,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:11:29,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:11:29,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-15 00:11:29,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-15 00:11:29,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-15 00:11:29,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:11:30,309 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 5 proven. 113 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-10-15 00:11:30,310 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [959344734] [2020-10-15 00:11:30,310 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:11:30,310 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-15 00:11:30,310 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140349916] [2020-10-15 00:11:30,311 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 00:11:30,311 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:11:30,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 00:11:30,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-15 00:11:30,311 INFO L87 Difference]: Start difference. First operand 899 states and 1252 transitions. Second operand 11 states. [2020-10-15 00:11:30,805 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 73 [2020-10-15 00:11:31,008 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 60 [2020-10-15 00:11:31,163 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 58 [2020-10-15 00:11:31,782 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 58 [2020-10-15 00:11:32,201 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2020-10-15 00:11:32,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:11:32,922 INFO L93 Difference]: Finished difference Result 2592 states and 3617 transitions. [2020-10-15 00:11:32,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-15 00:11:32,923 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 68 [2020-10-15 00:11:32,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:11:32,933 INFO L225 Difference]: With dead ends: 2592 [2020-10-15 00:11:32,933 INFO L226 Difference]: Without dead ends: 1774 [2020-10-15 00:11:32,939 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=231, Invalid=699, Unknown=0, NotChecked=0, Total=930 [2020-10-15 00:11:32,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1774 states. [2020-10-15 00:11:33,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1774 to 1746. [2020-10-15 00:11:33,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1746 states. [2020-10-15 00:11:33,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1746 states to 1746 states and 2440 transitions. [2020-10-15 00:11:33,264 INFO L78 Accepts]: Start accepts. Automaton has 1746 states and 2440 transitions. Word has length 68 [2020-10-15 00:11:33,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:11:33,264 INFO L479 AbstractCegarLoop]: Abstraction has 1746 states and 2440 transitions. [2020-10-15 00:11:33,264 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 00:11:33,264 INFO L276 IsEmpty]: Start isEmpty. Operand 1746 states and 2440 transitions. [2020-10-15 00:11:33,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-15 00:11:33,270 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:11:33,270 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 7, 5, 5, 5, 5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:11:33,270 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-15 00:11:33,270 INFO L427 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:11:33,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:11:33,271 INFO L82 PathProgramCache]: Analyzing trace with hash -607214685, now seen corresponding path program 6 times [2020-10-15 00:11:33,271 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:11:33,271 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1730993028] [2020-10-15 00:11:33,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:11:33,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:11:33,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:33,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:33,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:33,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:33,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:33,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:33,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:33,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:34,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:34,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:34,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:34,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:35,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:35,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:35,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:35,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:35,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:36,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:36,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:36,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:36,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:38,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:11:38,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-15 00:11:38,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 21 [2020-10-15 00:11:38,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-15 00:11:38,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:11:38,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:11:38,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-15 00:11:38,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 00:11:38,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-15 00:11:38,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:11:38,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:11:38,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:11:38,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:38,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:11:38,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:11:38,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:11:38,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 00:11:38,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:11:38,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:11:38,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:11:38,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:11:38,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:11:38,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:11:38,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 00:11:38,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:11:38,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:38,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:38,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:38,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:38,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:39,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:39,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:39,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:39,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:40,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:41,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:41,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:41,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:42,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:42,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:42,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:43,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:43,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:11:43,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-15 00:11:43,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-15 00:11:43,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-15 00:11:43,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:11:43,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:11:43,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-15 00:11:43,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-15 00:11:43,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-15 00:11:43,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:11:44,263 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 94 proven. 118 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-15 00:11:44,263 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1730993028] [2020-10-15 00:11:44,264 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:11:44,264 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-15 00:11:44,264 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923625200] [2020-10-15 00:11:44,264 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-15 00:11:44,264 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:11:44,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-15 00:11:44,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=454, Unknown=0, NotChecked=0, Total=506 [2020-10-15 00:11:44,265 INFO L87 Difference]: Start difference. First operand 1746 states and 2440 transitions. Second operand 23 states. [2020-10-15 00:11:45,044 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 65 [2020-10-15 00:11:45,726 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 66 [2020-10-15 00:11:51,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:11:51,674 INFO L93 Difference]: Finished difference Result 5509 states and 7773 transitions. [2020-10-15 00:11:51,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-15 00:11:51,675 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 68 [2020-10-15 00:11:51,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:11:51,692 INFO L225 Difference]: With dead ends: 5509 [2020-10-15 00:11:51,692 INFO L226 Difference]: Without dead ends: 3982 [2020-10-15 00:11:51,700 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1976 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=638, Invalid=6334, Unknown=0, NotChecked=0, Total=6972 [2020-10-15 00:11:51,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3982 states. [2020-10-15 00:11:52,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3982 to 2796. [2020-10-15 00:11:52,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2796 states. [2020-10-15 00:11:52,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2796 states to 2796 states and 3933 transitions. [2020-10-15 00:11:52,273 INFO L78 Accepts]: Start accepts. Automaton has 2796 states and 3933 transitions. Word has length 68 [2020-10-15 00:11:52,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:11:52,273 INFO L479 AbstractCegarLoop]: Abstraction has 2796 states and 3933 transitions. [2020-10-15 00:11:52,273 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-15 00:11:52,273 INFO L276 IsEmpty]: Start isEmpty. Operand 2796 states and 3933 transitions. [2020-10-15 00:11:52,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-15 00:11:52,282 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:11:52,282 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 6, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:11:52,282 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-15 00:11:52,282 INFO L427 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:11:52,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:11:52,283 INFO L82 PathProgramCache]: Analyzing trace with hash -466666075, now seen corresponding path program 7 times [2020-10-15 00:11:52,283 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:11:52,283 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [978688419] [2020-10-15 00:11:52,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:11:52,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:11:52,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:52,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:52,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:52,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:52,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:52,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:52,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:52,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:52,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:52,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:53,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:53,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:53,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:53,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:53,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:54,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:55,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:57,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:11:57,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-15 00:11:57,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-15 00:11:57,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-15 00:11:57,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:11:57,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:11:57,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-15 00:11:57,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 00:11:57,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-15 00:11:57,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:11:57,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:11:57,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:11:57,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:57,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:11:57,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:11:57,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:11:57,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 00:11:57,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:11:57,373 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:11:57,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:11:57,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:11:57,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:11:57,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:11:57,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 00:11:57,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:11:57,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:57,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:57,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:57,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:57,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:57,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:58,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:58,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:58,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:58,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:58,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:58,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:59,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:59,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:00,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:00,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:01,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:01,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:02,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:02,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:02,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:12:02,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-15 00:12:02,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-15 00:12:02,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-15 00:12:02,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:12:02,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:12:02,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-15 00:12:02,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-15 00:12:02,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-15 00:12:02,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:12:02,882 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2020-10-15 00:12:02,883 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [978688419] [2020-10-15 00:12:02,883 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:12:02,883 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-15 00:12:02,884 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398587017] [2020-10-15 00:12:02,884 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-15 00:12:02,884 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:12:02,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-15 00:12:02,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-10-15 00:12:02,885 INFO L87 Difference]: Start difference. First operand 2796 states and 3933 transitions. Second operand 12 states. [2020-10-15 00:12:03,778 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 63 [2020-10-15 00:12:04,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:12:04,998 INFO L93 Difference]: Finished difference Result 6724 states and 9484 transitions. [2020-10-15 00:12:04,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-15 00:12:05,000 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 68 [2020-10-15 00:12:05,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:12:05,015 INFO L225 Difference]: With dead ends: 6724 [2020-10-15 00:12:05,016 INFO L226 Difference]: Without dead ends: 5400 [2020-10-15 00:12:05,022 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=186, Invalid=626, Unknown=0, NotChecked=0, Total=812 [2020-10-15 00:12:05,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5400 states. [2020-10-15 00:12:05,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5400 to 2835. [2020-10-15 00:12:05,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2835 states. [2020-10-15 00:12:05,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2835 states to 2835 states and 3983 transitions. [2020-10-15 00:12:05,694 INFO L78 Accepts]: Start accepts. Automaton has 2835 states and 3983 transitions. Word has length 68 [2020-10-15 00:12:05,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:12:05,694 INFO L479 AbstractCegarLoop]: Abstraction has 2835 states and 3983 transitions. [2020-10-15 00:12:05,694 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-15 00:12:05,695 INFO L276 IsEmpty]: Start isEmpty. Operand 2835 states and 3983 transitions. [2020-10-15 00:12:05,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-15 00:12:05,702 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:12:05,702 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 6, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:12:05,703 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-15 00:12:05,703 INFO L427 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:12:05,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:12:05,703 INFO L82 PathProgramCache]: Analyzing trace with hash -139446935, now seen corresponding path program 8 times [2020-10-15 00:12:05,703 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:12:05,703 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1587021732] [2020-10-15 00:12:05,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:12:05,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:12:05,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:05,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:05,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:05,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:05,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:05,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:05,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:05,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:06,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:06,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:06,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:06,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:06,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:06,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:06,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:07,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:07,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:07,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:07,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:07,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:07,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:08,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:08,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:08,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:08,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:08,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:08,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:08,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:08,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:08,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:08,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:08,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:09,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:09,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:09,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:09,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:10,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:10,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:10,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:10,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:10,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:12:10,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-15 00:12:10,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 40 [2020-10-15 00:12:10,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-15 00:12:10,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:12:10,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:12:10,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-15 00:12:10,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 00:12:10,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-15 00:12:10,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:12:10,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:12:10,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:12:10,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:10,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:12:10,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:12:10,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:12:10,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 00:12:10,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:12:10,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:12:10,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:12:10,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:12:10,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:12:10,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:12:10,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 00:12:10,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:12:10,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:10,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:10,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:11,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:11,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:11,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:13,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:13,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:13,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:14,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:14,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:14,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:15,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:15,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:15,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:15,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:15,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:12:15,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-15 00:12:15,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-15 00:12:15,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-15 00:12:15,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:12:15,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:12:15,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-15 00:12:15,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-15 00:12:15,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-15 00:12:15,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:12:17,089 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 58 proven. 163 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-15 00:12:17,090 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1587021732] [2020-10-15 00:12:17,090 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:12:17,090 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-15 00:12:17,090 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585354545] [2020-10-15 00:12:17,090 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-15 00:12:17,091 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:12:17,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-15 00:12:17,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=595, Unknown=0, NotChecked=0, Total=650 [2020-10-15 00:12:17,091 INFO L87 Difference]: Start difference. First operand 2835 states and 3983 transitions. Second operand 26 states. [2020-10-15 00:12:18,684 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 58 [2020-10-15 00:12:27,361 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2020-10-15 00:12:27,657 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2020-10-15 00:12:29,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:12:29,392 INFO L93 Difference]: Finished difference Result 11489 states and 16433 transitions. [2020-10-15 00:12:29,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2020-10-15 00:12:29,395 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 68 [2020-10-15 00:12:29,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:12:29,424 INFO L225 Difference]: With dead ends: 11489 [2020-10-15 00:12:29,424 INFO L226 Difference]: Without dead ends: 8960 [2020-10-15 00:12:29,434 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3726 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=853, Invalid=11357, Unknown=0, NotChecked=0, Total=12210 [2020-10-15 00:12:29,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8960 states. [2020-10-15 00:12:30,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8960 to 5100. [2020-10-15 00:12:30,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5100 states. [2020-10-15 00:12:30,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5100 states to 5100 states and 7193 transitions. [2020-10-15 00:12:30,181 INFO L78 Accepts]: Start accepts. Automaton has 5100 states and 7193 transitions. Word has length 68 [2020-10-15 00:12:30,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:12:30,181 INFO L479 AbstractCegarLoop]: Abstraction has 5100 states and 7193 transitions. [2020-10-15 00:12:30,181 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-15 00:12:30,181 INFO L276 IsEmpty]: Start isEmpty. Operand 5100 states and 7193 transitions. [2020-10-15 00:12:30,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-15 00:12:30,194 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:12:30,194 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 7, 5, 5, 5, 5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:12:30,194 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-15 00:12:30,194 INFO L427 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:12:30,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:12:30,195 INFO L82 PathProgramCache]: Analyzing trace with hash 870143659, now seen corresponding path program 9 times [2020-10-15 00:12:30,195 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:12:30,195 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1252310689] [2020-10-15 00:12:30,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:12:30,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:12:30,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:30,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:30,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:30,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:30,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:30,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:30,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:30,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:30,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:30,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:30,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:31,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:31,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking...