/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/array-examples/standard_maxInArray_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 17:59:48,746 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 17:59:48,749 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 17:59:48,793 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 17:59:48,794 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 17:59:48,804 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 17:59:48,806 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 17:59:48,810 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 17:59:48,813 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 17:59:48,817 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 17:59:48,818 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 17:59:48,819 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 17:59:48,819 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 17:59:48,822 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 17:59:48,825 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 17:59:48,827 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 17:59:48,829 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 17:59:48,830 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 17:59:48,832 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 17:59:48,841 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 17:59:48,843 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 17:59:48,844 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 17:59:48,845 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 17:59:48,846 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 17:59:48,850 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 17:59:48,850 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 17:59:48,851 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 17:59:48,854 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 17:59:48,854 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 17:59:48,855 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 17:59:48,855 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 17:59:48,856 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 17:59:48,857 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 17:59:48,857 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 17:59:48,858 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 17:59:48,859 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 17:59:48,859 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 17:59:48,860 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 17:59:48,860 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 17:59:48,861 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 17:59:48,862 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 17:59:48,863 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 [2020-10-14 17:59:48,905 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 17:59:48,905 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 17:59:48,907 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 17:59:48,908 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 17:59:48,908 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 17:59:48,908 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 17:59:48,909 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 17:59:48,909 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 17:59:48,909 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 17:59:48,909 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 17:59:48,910 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 17:59:48,911 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 17:59:48,911 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 17:59:48,911 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 17:59:48,911 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 17:59:48,912 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 17:59:48,912 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 17:59:48,912 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 17:59:48,912 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 17:59:48,912 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 17:59:48,913 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 17:59:48,913 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 17:59:48,913 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 17:59:48,913 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 17:59:48,913 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 17:59:48,914 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 17:59:48,914 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 17:59:48,914 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 17:59:48,914 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 17:59:48,914 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; [2020-10-14 17:59:49,197 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 17:59:49,209 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 17:59:49,213 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 17:59:49,214 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 17:59:49,215 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 17:59:49,216 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_maxInArray_ground.i [2020-10-14 17:59:49,282 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c64c56c2b/bfd1032903b94ff3809397a4451d92cd/FLAGcda01bf3e [2020-10-14 17:59:49,700 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 17:59:49,701 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-examples/standard_maxInArray_ground.i [2020-10-14 17:59:49,708 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c64c56c2b/bfd1032903b94ff3809397a4451d92cd/FLAGcda01bf3e [2020-10-14 17:59:50,043 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c64c56c2b/bfd1032903b94ff3809397a4451d92cd [2020-10-14 17:59:50,052 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 17:59:50,054 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 17:59:50,055 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 17:59:50,055 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 17:59:50,059 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 17:59:50,060 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:59:50" (1/1) ... [2020-10-14 17:59:50,064 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@363f8acd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:59:50, skipping insertion in model container [2020-10-14 17:59:50,065 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:59:50" (1/1) ... [2020-10-14 17:59:50,074 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 17:59:50,094 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 17:59:50,316 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 17:59:50,322 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 17:59:50,349 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 17:59:50,372 INFO L208 MainTranslator]: Completed translation [2020-10-14 17:59:50,374 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:59:50 WrapperNode [2020-10-14 17:59:50,374 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 17:59:50,375 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 17:59:50,375 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 17:59:50,375 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 17:59:50,477 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:59:50" (1/1) ... [2020-10-14 17:59:50,477 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:59:50" (1/1) ... [2020-10-14 17:59:50,486 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:59:50" (1/1) ... [2020-10-14 17:59:50,487 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:59:50" (1/1) ... [2020-10-14 17:59:50,501 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:59:50" (1/1) ... [2020-10-14 17:59:50,507 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:59:50" (1/1) ... [2020-10-14 17:59:50,508 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:59:50" (1/1) ... [2020-10-14 17:59:50,510 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 17:59:50,511 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 17:59:50,511 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 17:59:50,511 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 17:59:50,512 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:59:50" (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 [2020-10-14 17:59:50,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 17:59:50,577 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 17:59:50,577 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-14 17:59:50,577 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 17:59:50,577 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 17:59:50,577 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-14 17:59:50,577 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 17:59:50,578 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 17:59:50,578 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 17:59:50,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 17:59:50,578 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 17:59:50,578 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 17:59:50,578 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 17:59:50,578 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 17:59:50,803 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 17:59:50,804 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-14 17:59:50,808 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:59:50 BoogieIcfgContainer [2020-10-14 17:59:50,808 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 17:59:50,809 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 17:59:50,810 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 17:59:50,813 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 17:59:50,813 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 05:59:50" (1/3) ... [2020-10-14 17:59:50,814 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fb02f85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:59:50, skipping insertion in model container [2020-10-14 17:59:50,814 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:59:50" (2/3) ... [2020-10-14 17:59:50,815 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fb02f85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:59:50, skipping insertion in model container [2020-10-14 17:59:50,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:59:50" (3/3) ... [2020-10-14 17:59:50,816 INFO L109 eAbstractionObserver]: Analyzing ICFG standard_maxInArray_ground.i [2020-10-14 17:59:50,829 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 17:59:50,841 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 17:59:50,861 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 17:59:50,891 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 17:59:50,891 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 17:59:50,892 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 17:59:50,892 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 17:59:50,892 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 17:59:50,892 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 17:59:50,892 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 17:59:50,893 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 17:59:50,917 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-10-14 17:59:50,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-14 17:59:50,925 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:59:50,926 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:59:50,927 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:59:50,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:59:50,934 INFO L82 PathProgramCache]: Analyzing trace with hash -1241254978, now seen corresponding path program 1 times [2020-10-14 17:59:50,943 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:59:50,944 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [883796461] [2020-10-14 17:59:50,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:59:51,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:59:51,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:59:51,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:59:51,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:59:51,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-14 17:59:51,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:59:51,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-14 17:59:51,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:59:51,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:59:51,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:59:51,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 17:59:51,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:59:51,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-14 17:59:51,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:59:51,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:59:51,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:59:51,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:59:51,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:59:51,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:59:51,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 17:59:51,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:59:51,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:59:51,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:59:51,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:59:51,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:59:51,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:59:51,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 17:59:51,280 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [883796461] [2020-10-14 17:59:51,282 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 17:59:51,282 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 17:59:51,283 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895461934] [2020-10-14 17:59:51,289 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 17:59:51,289 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:59:51,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 17:59:51,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 17:59:51,307 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 3 states. [2020-10-14 17:59:51,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:59:51,410 INFO L93 Difference]: Finished difference Result 48 states and 61 transitions. [2020-10-14 17:59:51,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 17:59:51,412 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-10-14 17:59:51,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:59:51,421 INFO L225 Difference]: With dead ends: 48 [2020-10-14 17:59:51,421 INFO L226 Difference]: Without dead ends: 23 [2020-10-14 17:59:51,425 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 17:59:51,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-10-14 17:59:51,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-10-14 17:59:51,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-10-14 17:59:51,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2020-10-14 17:59:51,464 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 15 [2020-10-14 17:59:51,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:59:51,465 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2020-10-14 17:59:51,465 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 17:59:51,465 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2020-10-14 17:59:51,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-14 17:59:51,466 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:59:51,467 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:59:51,467 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 17:59:51,467 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:59:51,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:59:51,468 INFO L82 PathProgramCache]: Analyzing trace with hash -159068691, now seen corresponding path program 1 times [2020-10-14 17:59:51,468 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:59:51,469 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [326975744] [2020-10-14 17:59:51,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:59:51,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:59:51,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:59:51,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:59:51,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:59:51,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-14 17:59:51,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:59:51,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 214 [2020-10-14 17:59:51,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:59:51,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:59:51,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:59:51,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 17:59:51,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 17:59:51,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-14 17:59:51,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:59:51,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:59:51,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:59:51,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:59:51,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:59:51,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:59:51,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 17:59:51,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:59:51,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:59:51,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:59:51,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:59:51,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:59:51,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:59:51,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 17:59:51,788 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [326975744] [2020-10-14 17:59:51,789 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 17:59:51,789 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 17:59:51,789 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113175358] [2020-10-14 17:59:51,796 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 17:59:51,797 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:59:51,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 17:59:51,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 17:59:51,798 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand 4 states. [2020-10-14 17:59:51,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:59:51,876 INFO L93 Difference]: Finished difference Result 40 states and 46 transitions. [2020-10-14 17:59:51,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 17:59:51,877 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-10-14 17:59:51,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:59:51,879 INFO L225 Difference]: With dead ends: 40 [2020-10-14 17:59:51,880 INFO L226 Difference]: Without dead ends: 25 [2020-10-14 17:59:51,881 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 17:59:51,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-10-14 17:59:51,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2020-10-14 17:59:51,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-14 17:59:51,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2020-10-14 17:59:51,891 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 15 [2020-10-14 17:59:51,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:59:51,892 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2020-10-14 17:59:51,892 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 17:59:51,892 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2020-10-14 17:59:51,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-14 17:59:51,893 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:59:51,893 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:59:51,894 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 17:59:51,894 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:59:51,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:59:51,895 INFO L82 PathProgramCache]: Analyzing trace with hash 1675123339, now seen corresponding path program 1 times [2020-10-14 17:59:51,895 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:59:51,895 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [807966162] [2020-10-14 17:59:51,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:59:51,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:59:51,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:59:51,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:59:52,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:59:52,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 17:59:52,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:59:52,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-14 17:59:52,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:59:52,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:59:52,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 17:59:52,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 17:59:52,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 17:59:52,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 17:59:52,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:59:52,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:59:52,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:59:52,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:59:52,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:59:52,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:59:52,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 17:59:52,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:59:52,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:59:52,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:59:52,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:59:52,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:59:52,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:59:52,113 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 17:59:52,113 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [807966162] [2020-10-14 17:59:52,114 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:59:52,114 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 17:59:52,114 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210988181] [2020-10-14 17:59:52,115 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 17:59:52,115 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:59:52,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 17:59:52,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 17:59:52,116 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand 5 states. [2020-10-14 17:59:52,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:59:52,225 INFO L93 Difference]: Finished difference Result 42 states and 48 transitions. [2020-10-14 17:59:52,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 17:59:52,226 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-10-14 17:59:52,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:59:52,227 INFO L225 Difference]: With dead ends: 42 [2020-10-14 17:59:52,227 INFO L226 Difference]: Without dead ends: 27 [2020-10-14 17:59:52,228 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 17:59:52,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-10-14 17:59:52,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2020-10-14 17:59:52,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-14 17:59:52,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2020-10-14 17:59:52,241 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 17 [2020-10-14 17:59:52,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:59:52,242 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2020-10-14 17:59:52,242 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 17:59:52,242 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2020-10-14 17:59:52,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-14 17:59:52,243 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:59:52,243 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:59:52,244 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 17:59:52,244 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:59:52,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:59:52,244 INFO L82 PathProgramCache]: Analyzing trace with hash -897894487, now seen corresponding path program 2 times [2020-10-14 17:59:52,245 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:59:52,246 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1378734872] [2020-10-14 17:59:52,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:59:52,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:59:52,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:59:52,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:59:52,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:59:52,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-14 17:59:52,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:59:52,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 208 [2020-10-14 17:59:52,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:59:52,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:59:52,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 17:59:52,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 17:59:52,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:59:52,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:59:52,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:59:52,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:59:52,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:59:52,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:59:52,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:59:52,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:59:52,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:59:52,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:59:52,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:59:52,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:59:52,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:59:52,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:59:52,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:59:52,528 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 17:59:52,529 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1378734872] [2020-10-14 17:59:52,529 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:59:52,529 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 17:59:52,530 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457053987] [2020-10-14 17:59:52,530 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 17:59:52,530 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:59:52,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 17:59:52,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 17:59:52,531 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand 6 states. [2020-10-14 17:59:52,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:59:52,608 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2020-10-14 17:59:52,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 17:59:52,609 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-10-14 17:59:52,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:59:52,610 INFO L225 Difference]: With dead ends: 44 [2020-10-14 17:59:52,610 INFO L226 Difference]: Without dead ends: 29 [2020-10-14 17:59:52,611 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 17:59:52,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-14 17:59:52,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2020-10-14 17:59:52,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-14 17:59:52,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2020-10-14 17:59:52,617 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 19 [2020-10-14 17:59:52,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:59:52,618 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2020-10-14 17:59:52,618 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 17:59:52,618 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2020-10-14 17:59:52,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-14 17:59:52,619 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:59:52,619 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:59:52,619 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 17:59:52,619 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:59:52,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:59:52,620 INFO L82 PathProgramCache]: Analyzing trace with hash 333137223, now seen corresponding path program 3 times [2020-10-14 17:59:52,620 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:59:52,620 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [334069826] [2020-10-14 17:59:52,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:59:52,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:59:52,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:59:52,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:59:52,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:59:52,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-14 17:59:52,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:59:52,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-10-14 17:59:52,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:59:52,803 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:59:52,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 17:59:52,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 17:59:52,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 17:59:52,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:59:52,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:59:52,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:59:52,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:59:52,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:59:52,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:59:52,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:59:52,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:59:52,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:59:52,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:59:52,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:59:52,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:59:52,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:59:52,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:59:52,860 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 17:59:52,860 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [334069826] [2020-10-14 17:59:52,861 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:59:52,861 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 17:59:52,861 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179843080] [2020-10-14 17:59:52,861 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 17:59:52,862 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:59:52,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 17:59:52,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 17:59:52,862 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand 7 states. [2020-10-14 17:59:52,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:59:52,941 INFO L93 Difference]: Finished difference Result 46 states and 52 transitions. [2020-10-14 17:59:52,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 17:59:52,941 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2020-10-14 17:59:52,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:59:52,942 INFO L225 Difference]: With dead ends: 46 [2020-10-14 17:59:52,942 INFO L226 Difference]: Without dead ends: 31 [2020-10-14 17:59:52,943 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 17:59:52,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-14 17:59:52,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2020-10-14 17:59:52,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-14 17:59:52,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2020-10-14 17:59:52,950 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 21 [2020-10-14 17:59:52,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:59:52,951 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2020-10-14 17:59:52,951 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 17:59:52,951 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2020-10-14 17:59:52,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-14 17:59:52,952 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:59:52,952 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:59:52,952 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 17:59:52,953 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:59:52,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:59:52,953 INFO L82 PathProgramCache]: Analyzing trace with hash -2056363163, now seen corresponding path program 4 times [2020-10-14 17:59:52,953 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:59:52,954 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2121221015] [2020-10-14 17:59:52,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:59:52,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:59:52,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:59:52,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:59:53,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:59:53,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 17:59:53,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:59:53,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 237 [2020-10-14 17:59:53,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:59:53,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:59:53,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 17:59:53,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 17:59:53,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 17:59:53,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:59:53,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:59:53,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:59:53,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:59:53,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:59:53,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:59:53,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:59:53,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:59:53,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:59:53,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:59:53,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:59:53,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:59:53,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:59:53,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:59:53,262 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 17:59:53,262 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2121221015] [2020-10-14 17:59:53,263 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:59:53,263 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 17:59:53,263 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910743492] [2020-10-14 17:59:53,264 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 17:59:53,264 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:59:53,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 17:59:53,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 17:59:53,265 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand 8 states. [2020-10-14 17:59:53,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:59:53,334 INFO L93 Difference]: Finished difference Result 48 states and 54 transitions. [2020-10-14 17:59:53,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 17:59:53,334 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2020-10-14 17:59:53,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:59:53,335 INFO L225 Difference]: With dead ends: 48 [2020-10-14 17:59:53,335 INFO L226 Difference]: Without dead ends: 33 [2020-10-14 17:59:53,336 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 17:59:53,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-14 17:59:53,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2020-10-14 17:59:53,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-14 17:59:53,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2020-10-14 17:59:53,342 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 23 [2020-10-14 17:59:53,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:59:53,342 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2020-10-14 17:59:53,342 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 17:59:53,342 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2020-10-14 17:59:53,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-14 17:59:53,343 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:59:53,343 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:59:53,343 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 17:59:53,344 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:59:53,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:59:53,344 INFO L82 PathProgramCache]: Analyzing trace with hash -558730749, now seen corresponding path program 5 times [2020-10-14 17:59:53,344 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:59:53,345 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [232004411] [2020-10-14 17:59:53,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:59:53,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:59:53,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:59:53,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:59:53,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:59:53,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 17:59:53,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:59:53,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 219 [2020-10-14 17:59:53,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:59:53,577 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:59:53,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 17:59:53,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 17:59:53,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 17:59:53,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:59:53,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:59:53,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:59:53,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:59:53,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:59:53,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:59:53,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:59:53,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:59:53,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:59:53,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:59:53,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:59:53,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:59:53,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:59:53,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:59:53,653 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 17:59:53,653 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [232004411] [2020-10-14 17:59:53,654 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:59:53,654 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 17:59:53,654 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43432120] [2020-10-14 17:59:53,655 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 17:59:53,655 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:59:53,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 17:59:53,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-14 17:59:53,656 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand 9 states. [2020-10-14 17:59:53,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:59:53,742 INFO L93 Difference]: Finished difference Result 50 states and 56 transitions. [2020-10-14 17:59:53,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 17:59:53,743 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-14 17:59:53,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:59:53,744 INFO L225 Difference]: With dead ends: 50 [2020-10-14 17:59:53,744 INFO L226 Difference]: Without dead ends: 35 [2020-10-14 17:59:53,744 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-14 17:59:53,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-14 17:59:53,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2020-10-14 17:59:53,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-14 17:59:53,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2020-10-14 17:59:53,750 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 25 [2020-10-14 17:59:53,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:59:53,750 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2020-10-14 17:59:53,750 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 17:59:53,750 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2020-10-14 17:59:53,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-14 17:59:53,751 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:59:53,751 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:59:53,752 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 17:59:53,752 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:59:53,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:59:53,752 INFO L82 PathProgramCache]: Analyzing trace with hash -148025055, now seen corresponding path program 6 times [2020-10-14 17:59:53,752 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:59:53,753 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [743551697] [2020-10-14 17:59:53,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:59:53,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:59:53,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:59:53,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:59:54,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:59:54,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-14 17:59:54,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:59:54,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 293 [2020-10-14 17:59:54,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:59:54,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:59:54,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 17:59:54,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 17:59:54,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 17:59:54,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:59:54,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:59:54,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:59:54,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:59:54,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:59:54,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:59:54,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:59:54,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:59:54,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:59:54,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:59:54,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:59:54,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:59:54,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:59:54,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:59:54,160 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 17:59:54,160 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [743551697] [2020-10-14 17:59:54,160 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:59:54,161 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 17:59:54,161 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403049403] [2020-10-14 17:59:54,161 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 17:59:54,162 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:59:54,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 17:59:54,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-14 17:59:54,163 INFO L87 Difference]: Start difference. First operand 34 states and 37 transitions. Second operand 10 states. [2020-10-14 17:59:54,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:59:54,256 INFO L93 Difference]: Finished difference Result 52 states and 58 transitions. [2020-10-14 17:59:54,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 17:59:54,256 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 27 [2020-10-14 17:59:54,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:59:54,257 INFO L225 Difference]: With dead ends: 52 [2020-10-14 17:59:54,257 INFO L226 Difference]: Without dead ends: 37 [2020-10-14 17:59:54,258 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-14 17:59:54,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-10-14 17:59:54,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36. [2020-10-14 17:59:54,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-14 17:59:54,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions. [2020-10-14 17:59:54,263 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 27 [2020-10-14 17:59:54,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:59:54,263 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 39 transitions. [2020-10-14 17:59:54,264 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 17:59:54,264 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2020-10-14 17:59:54,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-14 17:59:54,264 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:59:54,265 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:59:54,265 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 17:59:54,265 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:59:54,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:59:54,265 INFO L82 PathProgramCache]: Analyzing trace with hash -596844353, now seen corresponding path program 7 times [2020-10-14 17:59:54,266 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:59:54,266 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [560066323] [2020-10-14 17:59:54,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:59:54,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:59:54,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:59:54,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:59:54,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:59:54,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-14 17:59:54,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:59:54,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 368 [2020-10-14 17:59:54,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:59:54,646 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:59:54,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 17:59:54,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 17:59:54,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 17:59:54,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:59:54,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:59:54,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:59:54,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:59:54,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:59:54,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:59:54,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:59:54,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:59:54,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:59:54,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:59:54,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:59:54,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:59:54,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:59:54,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:59:54,760 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 17:59:54,761 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [560066323] [2020-10-14 17:59:54,761 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:59:54,761 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 17:59:54,762 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505378904] [2020-10-14 17:59:54,762 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 17:59:54,762 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:59:54,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 17:59:54,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-14 17:59:54,763 INFO L87 Difference]: Start difference. First operand 36 states and 39 transitions. Second operand 11 states. [2020-10-14 17:59:54,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:59:54,871 INFO L93 Difference]: Finished difference Result 54 states and 60 transitions. [2020-10-14 17:59:54,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 17:59:54,871 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 29 [2020-10-14 17:59:54,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:59:54,872 INFO L225 Difference]: With dead ends: 54 [2020-10-14 17:59:54,872 INFO L226 Difference]: Without dead ends: 39 [2020-10-14 17:59:54,873 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-14 17:59:54,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-14 17:59:54,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 38. [2020-10-14 17:59:54,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-14 17:59:54,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2020-10-14 17:59:54,878 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 29 [2020-10-14 17:59:54,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:59:54,879 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 41 transitions. [2020-10-14 17:59:54,879 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 17:59:54,879 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2020-10-14 17:59:54,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-14 17:59:54,880 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:59:54,880 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:59:54,880 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 17:59:54,881 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:59:54,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:59:54,881 INFO L82 PathProgramCache]: Analyzing trace with hash 1879507165, now seen corresponding path program 8 times [2020-10-14 17:59:54,881 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:59:54,881 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2085414964] [2020-10-14 17:59:54,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:59:54,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:59:54,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:59:54,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:59:55,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:59:55,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 17:59:55,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:59:55,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 349 [2020-10-14 17:59:55,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:59:55,244 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:59:55,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 17:59:55,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 17:59:55,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 17:59:55,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:59:55,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:59:55,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:59:55,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:59:55,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:59:55,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:59:55,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:59:55,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:59:55,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:59:55,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:59:55,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:59:55,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:59:55,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:59:55,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:59:55,391 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 17:59:55,392 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2085414964] [2020-10-14 17:59:55,392 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:59:55,392 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 17:59:55,392 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528714439] [2020-10-14 17:59:55,393 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 17:59:55,393 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:59:55,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 17:59:55,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-14 17:59:55,394 INFO L87 Difference]: Start difference. First operand 38 states and 41 transitions. Second operand 12 states. [2020-10-14 17:59:55,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:59:55,514 INFO L93 Difference]: Finished difference Result 56 states and 62 transitions. [2020-10-14 17:59:55,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 17:59:55,515 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 31 [2020-10-14 17:59:55,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:59:55,516 INFO L225 Difference]: With dead ends: 56 [2020-10-14 17:59:55,516 INFO L226 Difference]: Without dead ends: 41 [2020-10-14 17:59:55,517 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-14 17:59:55,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-14 17:59:55,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 40. [2020-10-14 17:59:55,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-14 17:59:55,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 43 transitions. [2020-10-14 17:59:55,529 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 43 transitions. Word has length 31 [2020-10-14 17:59:55,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:59:55,529 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 43 transitions. [2020-10-14 17:59:55,530 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 17:59:55,530 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 43 transitions. [2020-10-14 17:59:55,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-14 17:59:55,531 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:59:55,531 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:59:55,533 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 17:59:55,533 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:59:55,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:59:55,533 INFO L82 PathProgramCache]: Analyzing trace with hash -2053533317, now seen corresponding path program 9 times [2020-10-14 17:59:55,533 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:59:55,534 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1208363089] [2020-10-14 17:59:55,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:59:55,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:59:55,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:59:55,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:59:55,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:59:55,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-14 17:59:55,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:59:55,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 409 [2020-10-14 17:59:55,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:59:55,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:59:55,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 17:59:55,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 17:59:55,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 17:59:55,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:59:56,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:59:56,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:59:56,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:59:56,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:59:56,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:59:56,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:59:56,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:59:56,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:59:56,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:59:56,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:59:56,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:59:56,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:59:56,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:59:56,075 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 17:59:56,076 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1208363089] [2020-10-14 17:59:56,076 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:59:56,076 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 17:59:56,076 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419268794] [2020-10-14 17:59:56,077 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 17:59:56,077 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:59:56,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 17:59:56,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-14 17:59:56,077 INFO L87 Difference]: Start difference. First operand 40 states and 43 transitions. Second operand 13 states. [2020-10-14 17:59:56,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:59:56,179 INFO L93 Difference]: Finished difference Result 58 states and 64 transitions. [2020-10-14 17:59:56,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 17:59:56,180 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 33 [2020-10-14 17:59:56,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:59:56,181 INFO L225 Difference]: With dead ends: 58 [2020-10-14 17:59:56,181 INFO L226 Difference]: Without dead ends: 43 [2020-10-14 17:59:56,182 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-14 17:59:56,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-10-14 17:59:56,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2020-10-14 17:59:56,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-14 17:59:56,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 45 transitions. [2020-10-14 17:59:56,187 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 45 transitions. Word has length 33 [2020-10-14 17:59:56,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:59:56,187 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 45 transitions. [2020-10-14 17:59:56,187 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 17:59:56,187 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 45 transitions. [2020-10-14 17:59:56,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-14 17:59:56,189 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:59:56,189 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:59:56,189 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 17:59:56,189 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:59:56,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:59:56,190 INFO L82 PathProgramCache]: Analyzing trace with hash -2134216039, now seen corresponding path program 10 times [2020-10-14 17:59:56,190 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:59:56,190 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2133996761] [2020-10-14 17:59:56,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:59:56,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:59:56,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:59:56,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:59:56,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:59:56,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-14 17:59:56,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:59:56,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 589 [2020-10-14 17:59:56,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:59:56,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:59:56,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 17:59:56,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 17:59:56,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 17:59:56,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:59:56,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:59:56,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:59:56,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:59:56,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:59:56,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:59:56,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:59:56,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:59:56,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:59:56,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:59:56,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:59:56,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:59:56,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:59:56,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:59:56,964 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 17:59:56,965 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2133996761] [2020-10-14 17:59:56,965 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:59:56,966 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 17:59:56,966 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336809430] [2020-10-14 17:59:56,966 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 17:59:56,967 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:59:56,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 17:59:56,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-14 17:59:56,968 INFO L87 Difference]: Start difference. First operand 42 states and 45 transitions. Second operand 14 states. [2020-10-14 17:59:57,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:59:57,093 INFO L93 Difference]: Finished difference Result 60 states and 66 transitions. [2020-10-14 17:59:57,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 17:59:57,094 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 35 [2020-10-14 17:59:57,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:59:57,095 INFO L225 Difference]: With dead ends: 60 [2020-10-14 17:59:57,095 INFO L226 Difference]: Without dead ends: 45 [2020-10-14 17:59:57,096 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-14 17:59:57,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-14 17:59:57,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 44. [2020-10-14 17:59:57,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-14 17:59:57,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 47 transitions. [2020-10-14 17:59:57,101 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 47 transitions. Word has length 35 [2020-10-14 17:59:57,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:59:57,101 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 47 transitions. [2020-10-14 17:59:57,101 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 17:59:57,101 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 47 transitions. [2020-10-14 17:59:57,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-14 17:59:57,102 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:59:57,102 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:59:57,102 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 17:59:57,103 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:59:57,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:59:57,103 INFO L82 PathProgramCache]: Analyzing trace with hash 1934066743, now seen corresponding path program 11 times [2020-10-14 17:59:57,103 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:59:57,104 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [859411432] [2020-10-14 17:59:57,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:59:57,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:59:57,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:59:57,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:59:57,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:59:57,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-14 17:59:57,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:59:57,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 652 [2020-10-14 17:59:57,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:59:57,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:59:57,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 17:59:57,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 17:59:57,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 17:59:57,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:59:57,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:59:57,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:59:57,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:59:57,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:59:57,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:59:57,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:59:57,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:59:57,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:59:57,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:59:57,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:59:57,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:59:57,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:59:57,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:59:57,905 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 17:59:57,905 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [859411432] [2020-10-14 17:59:57,906 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:59:57,906 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 17:59:57,906 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33361376] [2020-10-14 17:59:57,906 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 17:59:57,907 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:59:57,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 17:59:57,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-14 17:59:57,907 INFO L87 Difference]: Start difference. First operand 44 states and 47 transitions. Second operand 15 states. [2020-10-14 17:59:58,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:59:58,044 INFO L93 Difference]: Finished difference Result 62 states and 68 transitions. [2020-10-14 17:59:58,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 17:59:58,045 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 37 [2020-10-14 17:59:58,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:59:58,046 INFO L225 Difference]: With dead ends: 62 [2020-10-14 17:59:58,046 INFO L226 Difference]: Without dead ends: 47 [2020-10-14 17:59:58,047 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-14 17:59:58,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-14 17:59:58,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2020-10-14 17:59:58,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-14 17:59:58,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 49 transitions. [2020-10-14 17:59:58,052 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 49 transitions. Word has length 37 [2020-10-14 17:59:58,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:59:58,052 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 49 transitions. [2020-10-14 17:59:58,052 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 17:59:58,053 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 49 transitions. [2020-10-14 17:59:58,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-14 17:59:58,054 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:59:58,054 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:59:58,054 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 17:59:58,054 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:59:58,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:59:58,055 INFO L82 PathProgramCache]: Analyzing trace with hash -1161386411, now seen corresponding path program 12 times [2020-10-14 17:59:58,055 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:59:58,055 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [138670352] [2020-10-14 17:59:58,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:59:58,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:59:58,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:59:58,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:59:59,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:59:59,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-14 17:59:59,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:59:59,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1045 [2020-10-14 17:59:59,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:59:59,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:59:59,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 17:59:59,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 17:59:59,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 17:59:59,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:59:59,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:59:59,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:59:59,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:59:59,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:59:59,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:59:59,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:59:59,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:59:59,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:59:59,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:59:59,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:59:59,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:59:59,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:59:59,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:59:59,339 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 17:59:59,340 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [138670352] [2020-10-14 17:59:59,340 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:59:59,341 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 17:59:59,341 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121004584] [2020-10-14 17:59:59,342 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 17:59:59,342 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:59:59,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 17:59:59,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-14 17:59:59,343 INFO L87 Difference]: Start difference. First operand 46 states and 49 transitions. Second operand 16 states. [2020-10-14 17:59:59,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:59:59,522 INFO L93 Difference]: Finished difference Result 64 states and 70 transitions. [2020-10-14 17:59:59,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 17:59:59,523 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 39 [2020-10-14 17:59:59,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:59:59,524 INFO L225 Difference]: With dead ends: 64 [2020-10-14 17:59:59,524 INFO L226 Difference]: Without dead ends: 49 [2020-10-14 17:59:59,525 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-14 17:59:59,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-10-14 17:59:59,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 48. [2020-10-14 17:59:59,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-14 17:59:59,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 51 transitions. [2020-10-14 17:59:59,530 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 51 transitions. Word has length 39 [2020-10-14 17:59:59,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:59:59,530 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 51 transitions. [2020-10-14 17:59:59,530 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 17:59:59,530 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 51 transitions. [2020-10-14 17:59:59,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-14 17:59:59,531 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:59:59,531 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:59:59,531 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 17:59:59,532 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:59:59,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:59:59,532 INFO L82 PathProgramCache]: Analyzing trace with hash 520468723, now seen corresponding path program 13 times [2020-10-14 17:59:59,533 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:59:59,533 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [545558492] [2020-10-14 17:59:59,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:59:59,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:59:59,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:59:59,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:00,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:00:00,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-14 18:00:00,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:00:00,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 840 [2020-10-14 18:00:00,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:00:00,392 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:00:00,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 18:00:00,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:00:00,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 18:00:00,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:00:00,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:00:00,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:00:00,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:00,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:00:00,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:00:00,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:00:00,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:00:00,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:00:00,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:00:00,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:00:00,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:00:00,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:00:00,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:00:00,569 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 18:00:00,569 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [545558492] [2020-10-14 18:00:00,569 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:00:00,570 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 18:00:00,570 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100549742] [2020-10-14 18:00:00,570 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 18:00:00,570 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:00:00,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 18:00:00,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-14 18:00:00,571 INFO L87 Difference]: Start difference. First operand 48 states and 51 transitions. Second operand 17 states. [2020-10-14 18:00:00,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:00:00,696 INFO L93 Difference]: Finished difference Result 66 states and 72 transitions. [2020-10-14 18:00:00,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 18:00:00,697 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 41 [2020-10-14 18:00:00,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:00:00,698 INFO L225 Difference]: With dead ends: 66 [2020-10-14 18:00:00,698 INFO L226 Difference]: Without dead ends: 51 [2020-10-14 18:00:00,699 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-14 18:00:00,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-14 18:00:00,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 50. [2020-10-14 18:00:00,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-14 18:00:00,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 53 transitions. [2020-10-14 18:00:00,703 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 53 transitions. Word has length 41 [2020-10-14 18:00:00,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:00:00,704 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 53 transitions. [2020-10-14 18:00:00,704 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 18:00:00,704 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 53 transitions. [2020-10-14 18:00:00,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-14 18:00:00,705 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:00:00,705 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:00:00,705 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 18:00:00,705 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:00:00,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:00:00,705 INFO L82 PathProgramCache]: Analyzing trace with hash 1875549201, now seen corresponding path program 14 times [2020-10-14 18:00:00,706 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:00:00,706 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1563029932] [2020-10-14 18:00:00,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:00:00,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:00:00,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:00,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:01,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:00:01,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-14 18:00:01,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:00:01,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1271 [2020-10-14 18:00:01,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:00:01,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:00:01,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 18:00:01,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:00:01,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 18:00:01,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:00:02,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:00:02,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:00:02,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:02,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:00:02,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:00:02,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:00:02,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:00:02,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:00:02,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:00:02,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:00:02,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:00:02,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:00:02,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:00:02,257 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 18:00:02,258 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1563029932] [2020-10-14 18:00:02,258 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:00:02,258 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-14 18:00:02,258 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133395648] [2020-10-14 18:00:02,259 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-14 18:00:02,259 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:00:02,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-14 18:00:02,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-14 18:00:02,260 INFO L87 Difference]: Start difference. First operand 50 states and 53 transitions. Second operand 18 states. [2020-10-14 18:00:02,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:00:02,379 INFO L93 Difference]: Finished difference Result 68 states and 74 transitions. [2020-10-14 18:00:02,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 18:00:02,379 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 43 [2020-10-14 18:00:02,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:00:02,380 INFO L225 Difference]: With dead ends: 68 [2020-10-14 18:00:02,380 INFO L226 Difference]: Without dead ends: 53 [2020-10-14 18:00:02,381 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-14 18:00:02,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-10-14 18:00:02,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 52. [2020-10-14 18:00:02,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-14 18:00:02,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 55 transitions. [2020-10-14 18:00:02,385 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 55 transitions. Word has length 43 [2020-10-14 18:00:02,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:00:02,386 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 55 transitions. [2020-10-14 18:00:02,386 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-14 18:00:02,386 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 55 transitions. [2020-10-14 18:00:02,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-14 18:00:02,387 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:00:02,387 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:00:02,387 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 18:00:02,387 INFO L427 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:00:02,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:00:02,388 INFO L82 PathProgramCache]: Analyzing trace with hash -1562169425, now seen corresponding path program 15 times [2020-10-14 18:00:02,388 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:00:02,388 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1796748174] [2020-10-14 18:00:02,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:00:02,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:00:02,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:02,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:03,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:00:03,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-14 18:00:03,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:00:03,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1001 [2020-10-14 18:00:03,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:00:03,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:00:03,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 18:00:03,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:00:03,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 18:00:03,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:00:03,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:00:03,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:00:03,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:03,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:00:03,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:00:03,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:00:03,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:00:03,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:00:03,684 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:00:03,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:00:03,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:00:03,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:00:03,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:00:03,693 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 0 proven. 225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 18:00:03,693 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1796748174] [2020-10-14 18:00:03,694 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:00:03,694 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-14 18:00:03,694 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945435181] [2020-10-14 18:00:03,695 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 18:00:03,695 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:00:03,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 18:00:03,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-14 18:00:03,696 INFO L87 Difference]: Start difference. First operand 52 states and 55 transitions. Second operand 19 states. [2020-10-14 18:00:03,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:00:03,850 INFO L93 Difference]: Finished difference Result 70 states and 76 transitions. [2020-10-14 18:00:03,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 18:00:03,851 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 45 [2020-10-14 18:00:03,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:00:03,852 INFO L225 Difference]: With dead ends: 70 [2020-10-14 18:00:03,852 INFO L226 Difference]: Without dead ends: 55 [2020-10-14 18:00:03,853 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-14 18:00:03,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-14 18:00:03,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 54. [2020-10-14 18:00:03,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-14 18:00:03,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 57 transitions. [2020-10-14 18:00:03,858 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 57 transitions. Word has length 45 [2020-10-14 18:00:03,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:00:03,858 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 57 transitions. [2020-10-14 18:00:03,858 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 18:00:03,858 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 57 transitions. [2020-10-14 18:00:03,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-14 18:00:03,859 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:00:03,859 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:00:03,859 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 18:00:03,860 INFO L427 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:00:03,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:00:03,860 INFO L82 PathProgramCache]: Analyzing trace with hash 1915048909, now seen corresponding path program 16 times [2020-10-14 18:00:03,860 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:00:03,861 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1220130763] [2020-10-14 18:00:03,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:00:03,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:00:03,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:03,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:05,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:00:05,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-14 18:00:05,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:00:05,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1101 [2020-10-14 18:00:05,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:00:05,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:00:05,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 18:00:05,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:00:05,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 18:00:05,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:00:05,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:00:05,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:00:05,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:05,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:00:05,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:00:05,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:00:05,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:00:05,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:00:05,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:00:05,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:00:05,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:00:05,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:00:05,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:00:05,243 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 0 proven. 256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 18:00:05,244 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1220130763] [2020-10-14 18:00:05,244 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:00:05,244 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-14 18:00:05,249 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012580379] [2020-10-14 18:00:05,250 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-14 18:00:05,251 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:00:05,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-14 18:00:05,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-14 18:00:05,252 INFO L87 Difference]: Start difference. First operand 54 states and 57 transitions. Second operand 20 states. [2020-10-14 18:00:05,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:00:05,401 INFO L93 Difference]: Finished difference Result 72 states and 78 transitions. [2020-10-14 18:00:05,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 18:00:05,401 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 47 [2020-10-14 18:00:05,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:00:05,402 INFO L225 Difference]: With dead ends: 72 [2020-10-14 18:00:05,402 INFO L226 Difference]: Without dead ends: 57 [2020-10-14 18:00:05,403 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-14 18:00:05,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-14 18:00:05,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 56. [2020-10-14 18:00:05,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-14 18:00:05,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 59 transitions. [2020-10-14 18:00:05,411 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 59 transitions. Word has length 47 [2020-10-14 18:00:05,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:00:05,411 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 59 transitions. [2020-10-14 18:00:05,412 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-14 18:00:05,412 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 59 transitions. [2020-10-14 18:00:05,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-14 18:00:05,412 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:00:05,412 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:00:05,413 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 18:00:05,413 INFO L427 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:00:05,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:00:05,413 INFO L82 PathProgramCache]: Analyzing trace with hash 2037311595, now seen corresponding path program 17 times [2020-10-14 18:00:05,413 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:00:05,414 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2014625201] [2020-10-14 18:00:05,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:00:05,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:00:05,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:05,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:06,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:00:06,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-14 18:00:06,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:00:06,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1204 [2020-10-14 18:00:06,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:00:06,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:00:06,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 18:00:06,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:00:06,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 18:00:06,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:00:06,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:00:06,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:00:06,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:06,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:00:06,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:00:06,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:00:06,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:00:06,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:00:06,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:00:06,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:00:06,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:00:06,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:00:06,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:00:06,890 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 0 proven. 289 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 18:00:06,890 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2014625201] [2020-10-14 18:00:06,891 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:00:06,891 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-14 18:00:06,891 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234959259] [2020-10-14 18:00:06,892 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-14 18:00:06,892 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:00:06,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-14 18:00:06,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-14 18:00:06,893 INFO L87 Difference]: Start difference. First operand 56 states and 59 transitions. Second operand 21 states. [2020-10-14 18:00:07,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:00:07,061 INFO L93 Difference]: Finished difference Result 74 states and 80 transitions. [2020-10-14 18:00:07,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 18:00:07,062 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 49 [2020-10-14 18:00:07,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:00:07,063 INFO L225 Difference]: With dead ends: 74 [2020-10-14 18:00:07,063 INFO L226 Difference]: Without dead ends: 59 [2020-10-14 18:00:07,064 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-14 18:00:07,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-14 18:00:07,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 58. [2020-10-14 18:00:07,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-14 18:00:07,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 61 transitions. [2020-10-14 18:00:07,068 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 61 transitions. Word has length 49 [2020-10-14 18:00:07,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:00:07,068 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 61 transitions. [2020-10-14 18:00:07,068 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-14 18:00:07,068 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 61 transitions. [2020-10-14 18:00:07,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-14 18:00:07,069 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:00:07,069 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:00:07,069 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 18:00:07,070 INFO L427 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:00:07,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:00:07,070 INFO L82 PathProgramCache]: Analyzing trace with hash -727331447, now seen corresponding path program 18 times [2020-10-14 18:00:07,070 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:00:07,070 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [906733530] [2020-10-14 18:00:07,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:00:07,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:00:07,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:07,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:08,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:00:08,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-14 18:00:08,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:00:08,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1131 [2020-10-14 18:00:08,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:00:08,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:00:08,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 18:00:08,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:00:08,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 18:00:08,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:00:08,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:00:08,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:00:08,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:08,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:00:08,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:00:08,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:00:08,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:00:08,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:00:08,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:00:08,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:00:08,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:00:08,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:00:08,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 18:00:08,482 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 0 proven. 324 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 18:00:08,482 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [906733530] [2020-10-14 18:00:08,483 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:00:08,483 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-14 18:00:08,483 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249989962] [2020-10-14 18:00:08,483 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-14 18:00:08,484 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:00:08,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-14 18:00:08,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-14 18:00:08,485 INFO L87 Difference]: Start difference. First operand 58 states and 61 transitions. Second operand 22 states. [2020-10-14 18:00:08,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:00:08,655 INFO L93 Difference]: Finished difference Result 76 states and 82 transitions. [2020-10-14 18:00:08,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-14 18:00:08,656 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 51 [2020-10-14 18:00:08,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:00:08,657 INFO L225 Difference]: With dead ends: 76 [2020-10-14 18:00:08,657 INFO L226 Difference]: Without dead ends: 61 [2020-10-14 18:00:08,658 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-14 18:00:08,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-10-14 18:00:08,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 60. [2020-10-14 18:00:08,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-10-14 18:00:08,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 63 transitions. [2020-10-14 18:00:08,667 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 63 transitions. Word has length 51 [2020-10-14 18:00:08,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:00:08,667 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 63 transitions. [2020-10-14 18:00:08,667 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-14 18:00:08,668 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 63 transitions. [2020-10-14 18:00:08,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-14 18:00:08,668 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:00:08,669 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:00:08,669 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 18:00:08,669 INFO L427 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:00:08,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:00:08,670 INFO L82 PathProgramCache]: Analyzing trace with hash 1035461415, now seen corresponding path program 19 times [2020-10-14 18:00:08,670 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:00:08,670 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [582901543] [2020-10-14 18:00:08,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:00:08,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:00:08,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:08,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:09,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:00:09,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-14 18:00:09,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:00:09,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1271 [2020-10-14 18:00:09,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:00:09,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:00:09,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-14 18:00:09,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:00:09,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 18:00:09,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:00:10,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:00:10,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:00:10,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:10,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:00:10,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:00:10,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:00:10,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:00:10,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:00:10,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:00:10,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:00:10,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:00:10,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:00:10,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:00:10,252 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 0 proven. 361 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 18:00:10,252 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [582901543] [2020-10-14 18:00:10,252 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:00:10,253 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-14 18:00:10,253 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760618412] [2020-10-14 18:00:10,253 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-14 18:00:10,253 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:00:10,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-14 18:00:10,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-14 18:00:10,254 INFO L87 Difference]: Start difference. First operand 60 states and 63 transitions. Second operand 23 states. [2020-10-14 18:00:10,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:00:10,446 INFO L93 Difference]: Finished difference Result 78 states and 84 transitions. [2020-10-14 18:00:10,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-14 18:00:10,447 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 53 [2020-10-14 18:00:10,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:00:10,448 INFO L225 Difference]: With dead ends: 78 [2020-10-14 18:00:10,448 INFO L226 Difference]: Without dead ends: 63 [2020-10-14 18:00:10,448 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-14 18:00:10,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-10-14 18:00:10,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 62. [2020-10-14 18:00:10,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-10-14 18:00:10,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 65 transitions. [2020-10-14 18:00:10,452 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 65 transitions. Word has length 53 [2020-10-14 18:00:10,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:00:10,453 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 65 transitions. [2020-10-14 18:00:10,453 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-14 18:00:10,453 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 65 transitions. [2020-10-14 18:00:10,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-14 18:00:10,453 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:00:10,454 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:00:10,454 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 18:00:10,454 INFO L427 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:00:10,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:00:10,454 INFO L82 PathProgramCache]: Analyzing trace with hash -1432680123, now seen corresponding path program 20 times [2020-10-14 18:00:10,455 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:00:10,455 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [217251424] [2020-10-14 18:00:10,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:00:10,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:00:10,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:10,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:11,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:00:11,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-14 18:00:11,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:00:11,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1364 [2020-10-14 18:00:11,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:00:11,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:00:11,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-14 18:00:11,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:00:11,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 18:00:11,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:00:12,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:00:12,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:00:12,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:12,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:00:12,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:00:12,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:00:12,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:00:12,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:00:12,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:00:12,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:00:12,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:00:12,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:00:12,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:00:12,109 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 0 proven. 400 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 18:00:12,110 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [217251424] [2020-10-14 18:00:12,110 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:00:12,110 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-14 18:00:12,111 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939241019] [2020-10-14 18:00:12,111 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-14 18:00:12,112 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:00:12,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-14 18:00:12,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-14 18:00:12,113 INFO L87 Difference]: Start difference. First operand 62 states and 65 transitions. Second operand 24 states. [2020-10-14 18:00:12,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:00:12,275 INFO L93 Difference]: Finished difference Result 80 states and 86 transitions. [2020-10-14 18:00:12,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-14 18:00:12,277 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 55 [2020-10-14 18:00:12,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:00:12,278 INFO L225 Difference]: With dead ends: 80 [2020-10-14 18:00:12,278 INFO L226 Difference]: Without dead ends: 65 [2020-10-14 18:00:12,279 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-14 18:00:12,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-10-14 18:00:12,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 64. [2020-10-14 18:00:12,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-10-14 18:00:12,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 67 transitions. [2020-10-14 18:00:12,283 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 67 transitions. Word has length 55 [2020-10-14 18:00:12,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:00:12,283 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 67 transitions. [2020-10-14 18:00:12,283 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-14 18:00:12,283 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 67 transitions. [2020-10-14 18:00:12,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-14 18:00:12,284 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:00:12,284 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:00:12,284 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-14 18:00:12,284 INFO L427 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:00:12,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:00:12,285 INFO L82 PathProgramCache]: Analyzing trace with hash 1800216547, now seen corresponding path program 21 times [2020-10-14 18:00:12,285 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:00:12,289 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1203685295] [2020-10-14 18:00:12,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:00:12,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:00:12,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:12,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:13,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:00:13,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-14 18:00:13,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:00:13,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1347 [2020-10-14 18:00:13,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:00:13,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:00:13,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-14 18:00:13,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:00:13,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-14 18:00:13,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:00:13,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:00:13,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:00:13,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:13,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:00:13,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:00:13,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:00:13,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:00:13,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:00:13,955 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:00:13,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:00:13,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:00:13,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:00:13,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:00:13,960 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 0 proven. 441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 18:00:13,961 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1203685295] [2020-10-14 18:00:13,961 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:00:13,961 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-14 18:00:13,961 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464775517] [2020-10-14 18:00:13,962 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-14 18:00:13,962 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:00:13,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-14 18:00:13,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-14 18:00:13,963 INFO L87 Difference]: Start difference. First operand 64 states and 67 transitions. Second operand 25 states. [2020-10-14 18:00:14,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:00:14,084 INFO L93 Difference]: Finished difference Result 82 states and 88 transitions. [2020-10-14 18:00:14,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-14 18:00:14,085 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 57 [2020-10-14 18:00:14,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:00:14,086 INFO L225 Difference]: With dead ends: 82 [2020-10-14 18:00:14,086 INFO L226 Difference]: Without dead ends: 67 [2020-10-14 18:00:14,086 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-14 18:00:14,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-10-14 18:00:14,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 66. [2020-10-14 18:00:14,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-14 18:00:14,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 69 transitions. [2020-10-14 18:00:14,090 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 69 transitions. Word has length 57 [2020-10-14 18:00:14,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:00:14,090 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 69 transitions. [2020-10-14 18:00:14,090 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-14 18:00:14,090 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 69 transitions. [2020-10-14 18:00:14,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-14 18:00:14,091 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:00:14,091 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:00:14,091 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-14 18:00:14,091 INFO L427 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:00:14,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:00:14,092 INFO L82 PathProgramCache]: Analyzing trace with hash -942405887, now seen corresponding path program 22 times [2020-10-14 18:00:14,092 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:00:14,092 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [128324674] [2020-10-14 18:00:14,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:00:14,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:00:14,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:14,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:15,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:00:15,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-14 18:00:15,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:00:15,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1343 [2020-10-14 18:00:15,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:00:15,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:00:15,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-14 18:00:15,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:00:15,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 18:00:15,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:00:15,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:00:15,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:00:15,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:15,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:00:15,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:00:15,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:00:15,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:00:15,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:00:15,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:00:15,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:00:15,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:00:15,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:00:15,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:00:15,874 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 18:00:15,874 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [128324674] [2020-10-14 18:00:15,875 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:00:15,875 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-14 18:00:15,875 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70001729] [2020-10-14 18:00:15,875 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-14 18:00:15,876 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:00:15,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-14 18:00:15,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-14 18:00:15,876 INFO L87 Difference]: Start difference. First operand 66 states and 69 transitions. Second operand 26 states. [2020-10-14 18:00:16,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:00:16,096 INFO L93 Difference]: Finished difference Result 84 states and 90 transitions. [2020-10-14 18:00:16,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-14 18:00:16,097 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 59 [2020-10-14 18:00:16,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:00:16,097 INFO L225 Difference]: With dead ends: 84 [2020-10-14 18:00:16,098 INFO L226 Difference]: Without dead ends: 69 [2020-10-14 18:00:16,098 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-14 18:00:16,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-10-14 18:00:16,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 68. [2020-10-14 18:00:16,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-14 18:00:16,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 71 transitions. [2020-10-14 18:00:16,104 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 71 transitions. Word has length 59 [2020-10-14 18:00:16,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:00:16,104 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 71 transitions. [2020-10-14 18:00:16,104 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-14 18:00:16,104 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 71 transitions. [2020-10-14 18:00:16,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-14 18:00:16,104 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:00:16,105 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:00:16,105 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-14 18:00:16,106 INFO L427 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:00:16,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:00:16,106 INFO L82 PathProgramCache]: Analyzing trace with hash 507354783, now seen corresponding path program 23 times [2020-10-14 18:00:16,106 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:00:16,106 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [114361221] [2020-10-14 18:00:16,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:00:16,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:00:16,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:16,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:17,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:00:17,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-14 18:00:17,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:00:17,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1141 [2020-10-14 18:00:17,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:00:17,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:00:17,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-14 18:00:17,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:00:17,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-14 18:00:17,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:00:17,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:00:17,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:00:17,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:17,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:00:17,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:00:17,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:00:17,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:00:17,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:00:17,636 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:00:17,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:00:17,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:00:17,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:00:17,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:00:17,643 INFO L134 CoverageAnalysis]: Checked inductivity of 529 backedges. 0 proven. 529 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 18:00:17,643 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [114361221] [2020-10-14 18:00:17,643 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:00:17,643 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-14 18:00:17,644 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034081010] [2020-10-14 18:00:17,644 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-14 18:00:17,644 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:00:17,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-14 18:00:17,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-14 18:00:17,646 INFO L87 Difference]: Start difference. First operand 68 states and 71 transitions. Second operand 27 states. [2020-10-14 18:00:17,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:00:17,818 INFO L93 Difference]: Finished difference Result 86 states and 92 transitions. [2020-10-14 18:00:17,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-14 18:00:17,819 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 61 [2020-10-14 18:00:17,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:00:17,820 INFO L225 Difference]: With dead ends: 86 [2020-10-14 18:00:17,820 INFO L226 Difference]: Without dead ends: 71 [2020-10-14 18:00:17,820 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-14 18:00:17,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-10-14 18:00:17,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 70. [2020-10-14 18:00:17,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-10-14 18:00:17,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 73 transitions. [2020-10-14 18:00:17,824 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 73 transitions. Word has length 61 [2020-10-14 18:00:17,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:00:17,824 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 73 transitions. [2020-10-14 18:00:17,824 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-14 18:00:17,824 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 73 transitions. [2020-10-14 18:00:17,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-14 18:00:17,825 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:00:17,825 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:00:17,825 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-14 18:00:17,825 INFO L427 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:00:17,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:00:17,825 INFO L82 PathProgramCache]: Analyzing trace with hash -2137012547, now seen corresponding path program 24 times [2020-10-14 18:00:17,826 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:00:17,826 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [424282587] [2020-10-14 18:00:17,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:00:17,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:00:17,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:17,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:19,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:00:19,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 18:00:19,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:00:19,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1461 [2020-10-14 18:00:19,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:00:19,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:00:19,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-14 18:00:19,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:00:19,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-14 18:00:19,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:00:19,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:00:19,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:00:19,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:19,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:00:19,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:00:19,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:00:19,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:00:19,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:00:19,726 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:00:19,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:00:19,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:00:19,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:00:19,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:00:19,730 INFO L134 CoverageAnalysis]: Checked inductivity of 576 backedges. 0 proven. 576 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 18:00:19,730 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [424282587] [2020-10-14 18:00:19,730 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:00:19,730 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-14 18:00:19,730 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82442513] [2020-10-14 18:00:19,732 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-14 18:00:19,732 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:00:19,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-14 18:00:19,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-14 18:00:19,733 INFO L87 Difference]: Start difference. First operand 70 states and 73 transitions. Second operand 28 states. [2020-10-14 18:00:19,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:00:19,933 INFO L93 Difference]: Finished difference Result 88 states and 94 transitions. [2020-10-14 18:00:19,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-14 18:00:19,934 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 63 [2020-10-14 18:00:19,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:00:19,935 INFO L225 Difference]: With dead ends: 88 [2020-10-14 18:00:19,935 INFO L226 Difference]: Without dead ends: 73 [2020-10-14 18:00:19,936 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-14 18:00:19,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-10-14 18:00:19,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 72. [2020-10-14 18:00:19,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-14 18:00:19,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 75 transitions. [2020-10-14 18:00:19,940 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 75 transitions. Word has length 63 [2020-10-14 18:00:19,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:00:19,940 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 75 transitions. [2020-10-14 18:00:19,940 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-14 18:00:19,940 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 75 transitions. [2020-10-14 18:00:19,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-14 18:00:19,941 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:00:19,941 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:00:19,941 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-14 18:00:19,941 INFO L427 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:00:19,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:00:19,942 INFO L82 PathProgramCache]: Analyzing trace with hash -753377445, now seen corresponding path program 25 times [2020-10-14 18:00:19,942 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:00:19,942 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2034661108] [2020-10-14 18:00:19,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:00:19,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:00:19,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:20,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:21,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:00:21,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 18:00:21,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:00:21,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1051 [2020-10-14 18:00:21,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:00:21,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:00:21,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-14 18:00:21,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:00:21,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-14 18:00:21,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:00:21,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:00:21,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:00:21,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:21,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:00:21,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:00:21,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:00:21,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:00:21,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:00:21,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:00:21,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:00:21,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:00:21,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:00:21,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:00:21,432 INFO L134 CoverageAnalysis]: Checked inductivity of 625 backedges. 0 proven. 625 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 18:00:21,432 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2034661108] [2020-10-14 18:00:21,432 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:00:21,433 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-14 18:00:21,433 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744644182] [2020-10-14 18:00:21,433 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-14 18:00:21,433 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:00:21,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-14 18:00:21,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2020-10-14 18:00:21,434 INFO L87 Difference]: Start difference. First operand 72 states and 75 transitions. Second operand 29 states. [2020-10-14 18:00:21,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:00:21,631 INFO L93 Difference]: Finished difference Result 90 states and 96 transitions. [2020-10-14 18:00:21,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-14 18:00:21,632 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 65 [2020-10-14 18:00:21,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:00:21,633 INFO L225 Difference]: With dead ends: 90 [2020-10-14 18:00:21,633 INFO L226 Difference]: Without dead ends: 75 [2020-10-14 18:00:21,634 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2020-10-14 18:00:21,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-14 18:00:21,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 74. [2020-10-14 18:00:21,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-14 18:00:21,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 77 transitions. [2020-10-14 18:00:21,642 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 77 transitions. Word has length 65 [2020-10-14 18:00:21,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:00:21,642 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 77 transitions. [2020-10-14 18:00:21,642 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-14 18:00:21,642 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 77 transitions. [2020-10-14 18:00:21,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-14 18:00:21,645 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:00:21,645 INFO L422 BasicCegarLoop]: trace histogram [26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:00:21,645 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-14 18:00:21,646 INFO L427 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:00:21,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:00:21,646 INFO L82 PathProgramCache]: Analyzing trace with hash 1775061113, now seen corresponding path program 26 times [2020-10-14 18:00:21,646 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:00:21,646 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1500876762] [2020-10-14 18:00:21,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:00:21,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:00:21,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:21,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:23,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:00:23,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 18:00:23,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:00:23,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1345 [2020-10-14 18:00:23,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:00:23,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:00:23,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-14 18:00:23,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:00:23,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-14 18:00:23,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:00:23,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:00:23,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:00:23,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:23,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:00:23,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:00:23,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:00:23,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:00:23,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:00:23,463 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:00:23,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:00:23,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:00:23,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:00:23,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:00:23,467 INFO L134 CoverageAnalysis]: Checked inductivity of 676 backedges. 0 proven. 676 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 18:00:23,468 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1500876762] [2020-10-14 18:00:23,468 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:00:23,468 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-14 18:00:23,468 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339609473] [2020-10-14 18:00:23,469 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-14 18:00:23,469 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:00:23,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-14 18:00:23,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-14 18:00:23,470 INFO L87 Difference]: Start difference. First operand 74 states and 77 transitions. Second operand 30 states. [2020-10-14 18:00:23,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:00:23,687 INFO L93 Difference]: Finished difference Result 92 states and 98 transitions. [2020-10-14 18:00:23,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-14 18:00:23,687 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 67 [2020-10-14 18:00:23,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:00:23,689 INFO L225 Difference]: With dead ends: 92 [2020-10-14 18:00:23,689 INFO L226 Difference]: Without dead ends: 77 [2020-10-14 18:00:23,690 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-14 18:00:23,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-10-14 18:00:23,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 76. [2020-10-14 18:00:23,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-14 18:00:23,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 79 transitions. [2020-10-14 18:00:23,693 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 79 transitions. Word has length 67 [2020-10-14 18:00:23,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:00:23,694 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 79 transitions. [2020-10-14 18:00:23,694 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-14 18:00:23,694 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 79 transitions. [2020-10-14 18:00:23,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-14 18:00:23,694 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:00:23,694 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:00:23,695 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-14 18:00:23,695 INFO L427 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:00:23,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:00:23,695 INFO L82 PathProgramCache]: Analyzing trace with hash 653025815, now seen corresponding path program 27 times [2020-10-14 18:00:23,695 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:00:23,696 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [425198046] [2020-10-14 18:00:23,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:00:23,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:00:23,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:23,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:25,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:00:25,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-14 18:00:25,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:00:25,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1450 [2020-10-14 18:00:25,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:00:25,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:00:25,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-14 18:00:25,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:00:25,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-14 18:00:25,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:00:25,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:00:25,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:00:25,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:25,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:00:25,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:00:25,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:00:25,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:00:25,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:00:25,647 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:00:25,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:00:25,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:00:25,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:00:25,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:00:25,653 INFO L134 CoverageAnalysis]: Checked inductivity of 729 backedges. 0 proven. 729 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 18:00:25,654 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [425198046] [2020-10-14 18:00:25,654 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:00:25,654 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-14 18:00:25,654 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082163455] [2020-10-14 18:00:25,655 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-14 18:00:25,655 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:00:25,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-14 18:00:25,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2020-10-14 18:00:25,656 INFO L87 Difference]: Start difference. First operand 76 states and 79 transitions. Second operand 31 states. [2020-10-14 18:00:25,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:00:25,797 INFO L93 Difference]: Finished difference Result 94 states and 100 transitions. [2020-10-14 18:00:25,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-14 18:00:25,798 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 69 [2020-10-14 18:00:25,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:00:25,799 INFO L225 Difference]: With dead ends: 94 [2020-10-14 18:00:25,799 INFO L226 Difference]: Without dead ends: 79 [2020-10-14 18:00:25,800 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2020-10-14 18:00:25,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-10-14 18:00:25,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 78. [2020-10-14 18:00:25,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-10-14 18:00:25,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 81 transitions. [2020-10-14 18:00:25,804 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 81 transitions. Word has length 69 [2020-10-14 18:00:25,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:00:25,804 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 81 transitions. [2020-10-14 18:00:25,804 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-14 18:00:25,804 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 81 transitions. [2020-10-14 18:00:25,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-14 18:00:25,805 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:00:25,805 INFO L422 BasicCegarLoop]: trace histogram [28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:00:25,805 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-14 18:00:25,805 INFO L427 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:00:25,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:00:25,805 INFO L82 PathProgramCache]: Analyzing trace with hash 413895733, now seen corresponding path program 28 times [2020-10-14 18:00:25,806 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:00:25,806 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1437026923] [2020-10-14 18:00:25,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:00:25,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:00:25,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:25,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:27,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:00:27,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-14 18:00:27,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:00:27,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1537 [2020-10-14 18:00:27,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:00:27,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:00:27,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-14 18:00:27,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:00:27,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-14 18:00:27,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:00:27,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:00:27,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:00:27,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:27,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:00:27,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:00:27,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:00:27,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:00:27,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:00:27,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:00:27,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:00:27,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:00:27,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:00:27,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:00:27,877 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 0 proven. 784 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 18:00:27,877 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1437026923] [2020-10-14 18:00:27,877 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:00:27,877 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-14 18:00:27,877 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074459943] [2020-10-14 18:00:27,878 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-14 18:00:27,878 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:00:27,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-14 18:00:27,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2020-10-14 18:00:27,879 INFO L87 Difference]: Start difference. First operand 78 states and 81 transitions. Second operand 32 states. [2020-10-14 18:00:28,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:00:28,109 INFO L93 Difference]: Finished difference Result 96 states and 102 transitions. [2020-10-14 18:00:28,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-14 18:00:28,110 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 71 [2020-10-14 18:00:28,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:00:28,111 INFO L225 Difference]: With dead ends: 96 [2020-10-14 18:00:28,111 INFO L226 Difference]: Without dead ends: 81 [2020-10-14 18:00:28,112 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2020-10-14 18:00:28,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-10-14 18:00:28,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 80. [2020-10-14 18:00:28,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-14 18:00:28,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 83 transitions. [2020-10-14 18:00:28,117 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 83 transitions. Word has length 71 [2020-10-14 18:00:28,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:00:28,117 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 83 transitions. [2020-10-14 18:00:28,117 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-14 18:00:28,117 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 83 transitions. [2020-10-14 18:00:28,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-14 18:00:28,118 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:00:28,118 INFO L422 BasicCegarLoop]: trace histogram [29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:00:28,118 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-14 18:00:28,118 INFO L427 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:00:28,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:00:28,119 INFO L82 PathProgramCache]: Analyzing trace with hash -1756846381, now seen corresponding path program 29 times [2020-10-14 18:00:28,119 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:00:28,119 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1961948519] [2020-10-14 18:00:28,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:00:28,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:00:28,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:28,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:29,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:00:29,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 18:00:29,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:00:29,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1671 [2020-10-14 18:00:29,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:00:29,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:00:29,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-14 18:00:29,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:00:29,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-14 18:00:29,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:00:30,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:00:30,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:00:30,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:30,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:00:30,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:00:30,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:00:30,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:00:30,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:00:30,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:00:30,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:00:30,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:00:30,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:00:30,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 18:00:30,367 INFO L134 CoverageAnalysis]: Checked inductivity of 841 backedges. 0 proven. 841 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 18:00:30,368 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1961948519] [2020-10-14 18:00:30,369 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:00:30,369 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-14 18:00:30,370 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786625096] [2020-10-14 18:00:30,370 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-14 18:00:30,370 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:00:30,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-14 18:00:30,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2020-10-14 18:00:30,371 INFO L87 Difference]: Start difference. First operand 80 states and 83 transitions. Second operand 33 states. [2020-10-14 18:00:30,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:00:30,508 INFO L93 Difference]: Finished difference Result 98 states and 104 transitions. [2020-10-14 18:00:30,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-14 18:00:30,508 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 73 [2020-10-14 18:00:30,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:00:30,509 INFO L225 Difference]: With dead ends: 98 [2020-10-14 18:00:30,509 INFO L226 Difference]: Without dead ends: 83 [2020-10-14 18:00:30,510 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2020-10-14 18:00:30,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-10-14 18:00:30,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 82. [2020-10-14 18:00:30,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-14 18:00:30,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 85 transitions. [2020-10-14 18:00:30,515 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 85 transitions. Word has length 73 [2020-10-14 18:00:30,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:00:30,515 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 85 transitions. [2020-10-14 18:00:30,515 INFO L480 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-14 18:00:30,515 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 85 transitions. [2020-10-14 18:00:30,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-14 18:00:30,516 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:00:30,516 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:00:30,517 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-14 18:00:30,517 INFO L427 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:00:30,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:00:30,517 INFO L82 PathProgramCache]: Analyzing trace with hash -485912079, now seen corresponding path program 30 times [2020-10-14 18:00:30,517 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:00:30,518 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1117343056] [2020-10-14 18:00:30,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:00:30,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:00:30,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:30,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:32,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:00:32,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-14 18:00:32,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:00:32,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1884 [2020-10-14 18:00:32,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:00:32,421 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:00:32,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-14 18:00:32,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:00:32,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-14 18:00:32,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:00:32,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:00:32,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:00:32,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:32,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:00:32,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:00:32,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:00:32,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:00:32,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:00:32,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:00:32,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:00:32,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:00:32,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:00:32,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:00:32,994 INFO L134 CoverageAnalysis]: Checked inductivity of 900 backedges. 0 proven. 900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 18:00:32,994 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1117343056] [2020-10-14 18:00:32,995 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:00:32,995 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-14 18:00:32,995 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813105219] [2020-10-14 18:00:32,996 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-14 18:00:32,996 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:00:32,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-14 18:00:32,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2020-10-14 18:00:32,997 INFO L87 Difference]: Start difference. First operand 82 states and 85 transitions. Second operand 34 states. [2020-10-14 18:00:33,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:00:33,242 INFO L93 Difference]: Finished difference Result 100 states and 106 transitions. [2020-10-14 18:00:33,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-14 18:00:33,242 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 75 [2020-10-14 18:00:33,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:00:33,243 INFO L225 Difference]: With dead ends: 100 [2020-10-14 18:00:33,243 INFO L226 Difference]: Without dead ends: 85 [2020-10-14 18:00:33,244 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2020-10-14 18:00:33,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-10-14 18:00:33,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 84. [2020-10-14 18:00:33,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-10-14 18:00:33,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 87 transitions. [2020-10-14 18:00:33,247 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 87 transitions. Word has length 75 [2020-10-14 18:00:33,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:00:33,248 INFO L479 AbstractCegarLoop]: Abstraction has 84 states and 87 transitions. [2020-10-14 18:00:33,248 INFO L480 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-14 18:00:33,248 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 87 transitions. [2020-10-14 18:00:33,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-14 18:00:33,249 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:00:33,249 INFO L422 BasicCegarLoop]: trace histogram [31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:00:33,249 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-14 18:00:33,249 INFO L427 AbstractCegarLoop]: === Iteration 33 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:00:33,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:00:33,250 INFO L82 PathProgramCache]: Analyzing trace with hash 1111240079, now seen corresponding path program 31 times [2020-10-14 18:00:33,250 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:00:33,250 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [751804723] [2020-10-14 18:00:33,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:00:33,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:00:33,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:33,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:35,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:00:35,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-14 18:00:35,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:00:35,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1990 [2020-10-14 18:00:35,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:00:35,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:00:35,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-14 18:00:35,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:00:35,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 18:00:35,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:00:35,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:00:35,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:00:35,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:35,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:00:35,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:00:35,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:00:35,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:00:35,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:00:35,865 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:00:35,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:00:35,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:00:35,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:00:35,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:00:35,872 INFO L134 CoverageAnalysis]: Checked inductivity of 961 backedges. 0 proven. 961 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 18:00:35,872 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [751804723] [2020-10-14 18:00:35,872 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:00:35,872 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-10-14 18:00:35,873 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792685432] [2020-10-14 18:00:35,873 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-10-14 18:00:35,873 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:00:35,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-10-14 18:00:35,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2020-10-14 18:00:35,874 INFO L87 Difference]: Start difference. First operand 84 states and 87 transitions. Second operand 35 states. [2020-10-14 18:00:36,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:00:36,137 INFO L93 Difference]: Finished difference Result 102 states and 108 transitions. [2020-10-14 18:00:36,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-14 18:00:36,138 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 77 [2020-10-14 18:00:36,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:00:36,139 INFO L225 Difference]: With dead ends: 102 [2020-10-14 18:00:36,139 INFO L226 Difference]: Without dead ends: 87 [2020-10-14 18:00:36,140 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2020-10-14 18:00:36,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-10-14 18:00:36,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 86. [2020-10-14 18:00:36,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-10-14 18:00:36,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 89 transitions. [2020-10-14 18:00:36,144 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 89 transitions. Word has length 77 [2020-10-14 18:00:36,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:00:36,144 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 89 transitions. [2020-10-14 18:00:36,144 INFO L480 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-10-14 18:00:36,144 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 89 transitions. [2020-10-14 18:00:36,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-14 18:00:36,145 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:00:36,145 INFO L422 BasicCegarLoop]: trace histogram [32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:00:36,145 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-14 18:00:36,145 INFO L427 AbstractCegarLoop]: === Iteration 34 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:00:36,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:00:36,146 INFO L82 PathProgramCache]: Analyzing trace with hash -1623828051, now seen corresponding path program 32 times [2020-10-14 18:00:36,146 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:00:36,146 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [529023490] [2020-10-14 18:00:36,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:00:36,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:00:36,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:36,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:38,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:00:38,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 18:00:38,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:00:38,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2249 [2020-10-14 18:00:38,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:00:38,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:00:38,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-14 18:00:38,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:00:38,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 18:00:38,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:00:39,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:00:39,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:00:39,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:39,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:00:39,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:00:39,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:00:39,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:00:39,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:00:39,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:00:39,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:00:39,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:00:39,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:00:39,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:00:39,067 INFO L134 CoverageAnalysis]: Checked inductivity of 1024 backedges. 0 proven. 1024 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 18:00:39,067 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [529023490] [2020-10-14 18:00:39,067 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:00:39,068 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-10-14 18:00:39,068 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139175461] [2020-10-14 18:00:39,068 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-10-14 18:00:39,069 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:00:39,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-10-14 18:00:39,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2020-10-14 18:00:39,070 INFO L87 Difference]: Start difference. First operand 86 states and 89 transitions. Second operand 36 states. [2020-10-14 18:00:39,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:00:39,302 INFO L93 Difference]: Finished difference Result 104 states and 110 transitions. [2020-10-14 18:00:39,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-14 18:00:39,303 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 79 [2020-10-14 18:00:39,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:00:39,304 INFO L225 Difference]: With dead ends: 104 [2020-10-14 18:00:39,304 INFO L226 Difference]: Without dead ends: 89 [2020-10-14 18:00:39,305 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2020-10-14 18:00:39,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-10-14 18:00:39,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 88. [2020-10-14 18:00:39,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-14 18:00:39,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 91 transitions. [2020-10-14 18:00:39,310 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 91 transitions. Word has length 79 [2020-10-14 18:00:39,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:00:39,310 INFO L479 AbstractCegarLoop]: Abstraction has 88 states and 91 transitions. [2020-10-14 18:00:39,310 INFO L480 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-10-14 18:00:39,311 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 91 transitions. [2020-10-14 18:00:39,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-14 18:00:39,311 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:00:39,311 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:00:39,312 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-14 18:00:39,312 INFO L427 AbstractCegarLoop]: === Iteration 35 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:00:39,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:00:39,312 INFO L82 PathProgramCache]: Analyzing trace with hash -1504315829, now seen corresponding path program 33 times [2020-10-14 18:00:39,312 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:00:39,313 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [56828413] [2020-10-14 18:00:39,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:00:39,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:00:39,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:39,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:41,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:00:41,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-14 18:00:41,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:00:41,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2463 [2020-10-14 18:00:41,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:00:41,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:00:41,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-14 18:00:41,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:00:41,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-14 18:00:41,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:00:42,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:00:42,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:00:42,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:42,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:00:42,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:00:42,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:00:42,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:00:42,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:00:42,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:00:42,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:00:42,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:00:42,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:00:42,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:00:42,472 INFO L134 CoverageAnalysis]: Checked inductivity of 1089 backedges. 0 proven. 1089 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 18:00:42,472 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [56828413] [2020-10-14 18:00:42,472 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:00:42,472 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2020-10-14 18:00:42,473 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689411991] [2020-10-14 18:00:42,473 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-10-14 18:00:42,473 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:00:42,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-10-14 18:00:42,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2020-10-14 18:00:42,474 INFO L87 Difference]: Start difference. First operand 88 states and 91 transitions. Second operand 37 states. [2020-10-14 18:00:42,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:00:42,690 INFO L93 Difference]: Finished difference Result 106 states and 112 transitions. [2020-10-14 18:00:42,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-14 18:00:42,690 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 81 [2020-10-14 18:00:42,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:00:42,691 INFO L225 Difference]: With dead ends: 106 [2020-10-14 18:00:42,691 INFO L226 Difference]: Without dead ends: 91 [2020-10-14 18:00:42,692 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2020-10-14 18:00:42,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-10-14 18:00:42,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 90. [2020-10-14 18:00:42,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-10-14 18:00:42,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 93 transitions. [2020-10-14 18:00:42,697 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 93 transitions. Word has length 81 [2020-10-14 18:00:42,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:00:42,698 INFO L479 AbstractCegarLoop]: Abstraction has 90 states and 93 transitions. [2020-10-14 18:00:42,698 INFO L480 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-10-14 18:00:42,698 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 93 transitions. [2020-10-14 18:00:42,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-14 18:00:42,699 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:00:42,699 INFO L422 BasicCegarLoop]: trace histogram [34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:00:42,699 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-14 18:00:42,699 INFO L427 AbstractCegarLoop]: === Iteration 36 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:00:42,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:00:42,700 INFO L82 PathProgramCache]: Analyzing trace with hash 1677779817, now seen corresponding path program 34 times [2020-10-14 18:00:42,700 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:00:42,700 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1123351471] [2020-10-14 18:00:42,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:00:42,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:00:42,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:42,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:44,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:00:44,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-14 18:00:44,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:00:44,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1778 [2020-10-14 18:00:44,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:00:44,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:00:44,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-14 18:00:44,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:00:44,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 18:00:44,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:00:45,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:00:45,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:00:45,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:45,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:00:45,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:00:45,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:00:45,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:00:45,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:00:45,200 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:00:45,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:00:45,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:00:45,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:00:45,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:00:45,206 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 0 proven. 1156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 18:00:45,207 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1123351471] [2020-10-14 18:00:45,207 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:00:45,207 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2020-10-14 18:00:45,207 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212158626] [2020-10-14 18:00:45,208 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-10-14 18:00:45,208 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:00:45,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-10-14 18:00:45,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=668, Invalid=738, Unknown=0, NotChecked=0, Total=1406 [2020-10-14 18:00:45,209 INFO L87 Difference]: Start difference. First operand 90 states and 93 transitions. Second operand 38 states. [2020-10-14 18:00:45,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:00:45,468 INFO L93 Difference]: Finished difference Result 108 states and 114 transitions. [2020-10-14 18:00:45,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-14 18:00:45,469 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 83 [2020-10-14 18:00:45,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:00:45,470 INFO L225 Difference]: With dead ends: 108 [2020-10-14 18:00:45,470 INFO L226 Difference]: Without dead ends: 93 [2020-10-14 18:00:45,471 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=668, Invalid=738, Unknown=0, NotChecked=0, Total=1406 [2020-10-14 18:00:45,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-10-14 18:00:45,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 92. [2020-10-14 18:00:45,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-10-14 18:00:45,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 95 transitions. [2020-10-14 18:00:45,475 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 95 transitions. Word has length 83 [2020-10-14 18:00:45,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:00:45,476 INFO L479 AbstractCegarLoop]: Abstraction has 92 states and 95 transitions. [2020-10-14 18:00:45,476 INFO L480 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-10-14 18:00:45,476 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 95 transitions. [2020-10-14 18:00:45,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-14 18:00:45,477 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:00:45,477 INFO L422 BasicCegarLoop]: trace histogram [35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:00:45,477 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-14 18:00:45,477 INFO L427 AbstractCegarLoop]: === Iteration 37 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:00:45,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:00:45,478 INFO L82 PathProgramCache]: Analyzing trace with hash 1654980871, now seen corresponding path program 35 times [2020-10-14 18:00:45,478 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:00:45,478 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1798174142] [2020-10-14 18:00:45,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:00:45,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:00:45,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:45,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:47,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:00:47,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-14 18:00:47,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:00:47,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2008 [2020-10-14 18:00:47,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:00:47,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:00:47,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-10-14 18:00:47,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:00:47,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 18:00:47,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:00:48,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:00:48,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:00:48,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:48,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:00:48,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:00:48,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:00:48,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:00:48,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:00:48,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:00:48,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:00:48,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:00:48,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:00:48,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:00:48,258 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 18:00:48,258 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1798174142] [2020-10-14 18:00:48,259 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:00:48,259 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2020-10-14 18:00:48,259 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890810388] [2020-10-14 18:00:48,259 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-10-14 18:00:48,260 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:00:48,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-10-14 18:00:48,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2020-10-14 18:00:48,261 INFO L87 Difference]: Start difference. First operand 92 states and 95 transitions. Second operand 39 states. [2020-10-14 18:00:48,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:00:48,533 INFO L93 Difference]: Finished difference Result 110 states and 116 transitions. [2020-10-14 18:00:48,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-14 18:00:48,533 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 85 [2020-10-14 18:00:48,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:00:48,535 INFO L225 Difference]: With dead ends: 110 [2020-10-14 18:00:48,535 INFO L226 Difference]: Without dead ends: 95 [2020-10-14 18:00:48,536 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2020-10-14 18:00:48,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-10-14 18:00:48,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 94. [2020-10-14 18:00:48,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-10-14 18:00:48,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 97 transitions. [2020-10-14 18:00:48,541 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 97 transitions. Word has length 85 [2020-10-14 18:00:48,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:00:48,542 INFO L479 AbstractCegarLoop]: Abstraction has 94 states and 97 transitions. [2020-10-14 18:00:48,542 INFO L480 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-10-14 18:00:48,542 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 97 transitions. [2020-10-14 18:00:48,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-14 18:00:48,543 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:00:48,543 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:00:48,543 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-14 18:00:48,543 INFO L427 AbstractCegarLoop]: === Iteration 38 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:00:48,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:00:48,544 INFO L82 PathProgramCache]: Analyzing trace with hash 1220030245, now seen corresponding path program 36 times [2020-10-14 18:00:48,544 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:00:48,544 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2089323755] [2020-10-14 18:00:48,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:00:48,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:00:48,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:48,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:50,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:00:50,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 18:00:50,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:00:50,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2171 [2020-10-14 18:00:50,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:00:50,734 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:00:50,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-10-14 18:00:50,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:00:50,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 18:00:50,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:00:51,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:00:51,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:00:51,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:51,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:00:51,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:00:51,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:00:51,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:00:51,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:00:51,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:00:51,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:00:51,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:00:51,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:00:51,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:00:51,573 INFO L134 CoverageAnalysis]: Checked inductivity of 1296 backedges. 0 proven. 1296 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 18:00:51,573 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2089323755] [2020-10-14 18:00:51,573 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:00:51,574 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2020-10-14 18:00:51,574 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969831173] [2020-10-14 18:00:51,574 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-10-14 18:00:51,574 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:00:51,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-10-14 18:00:51,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=743, Invalid=817, Unknown=0, NotChecked=0, Total=1560 [2020-10-14 18:00:51,575 INFO L87 Difference]: Start difference. First operand 94 states and 97 transitions. Second operand 40 states. [2020-10-14 18:00:51,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:00:51,744 INFO L93 Difference]: Finished difference Result 112 states and 118 transitions. [2020-10-14 18:00:51,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-14 18:00:51,744 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 87 [2020-10-14 18:00:51,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:00:51,746 INFO L225 Difference]: With dead ends: 112 [2020-10-14 18:00:51,746 INFO L226 Difference]: Without dead ends: 97 [2020-10-14 18:00:51,747 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=743, Invalid=817, Unknown=0, NotChecked=0, Total=1560 [2020-10-14 18:00:51,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-10-14 18:00:51,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 96. [2020-10-14 18:00:51,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-14 18:00:51,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 99 transitions. [2020-10-14 18:00:51,751 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 99 transitions. Word has length 87 [2020-10-14 18:00:51,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:00:51,752 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 99 transitions. [2020-10-14 18:00:51,752 INFO L480 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-10-14 18:00:51,752 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 99 transitions. [2020-10-14 18:00:51,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-14 18:00:51,753 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:00:51,753 INFO L422 BasicCegarLoop]: trace histogram [37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:00:51,753 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-14 18:00:51,753 INFO L427 AbstractCegarLoop]: === Iteration 39 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:00:51,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:00:51,754 INFO L82 PathProgramCache]: Analyzing trace with hash -155693629, now seen corresponding path program 37 times [2020-10-14 18:00:51,754 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:00:51,754 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1033868542] [2020-10-14 18:00:51,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:00:51,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:00:51,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:51,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:54,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:00:54,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-14 18:00:54,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:00:54,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2229 [2020-10-14 18:00:54,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:00:54,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:00:54,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 39 [2020-10-14 18:00:54,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:00:54,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 18:00:54,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:00:54,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:00:54,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:00:54,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:54,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:00:54,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:00:54,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:00:54,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:00:54,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:00:54,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:00:54,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:00:54,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:00:54,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:00:54,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:00:54,846 INFO L134 CoverageAnalysis]: Checked inductivity of 1369 backedges. 0 proven. 1369 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 18:00:54,846 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1033868542] [2020-10-14 18:00:54,846 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:00:54,847 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2020-10-14 18:00:54,847 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890871362] [2020-10-14 18:00:54,847 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2020-10-14 18:00:54,847 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:00:54,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2020-10-14 18:00:54,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=782, Invalid=858, Unknown=0, NotChecked=0, Total=1640 [2020-10-14 18:00:54,848 INFO L87 Difference]: Start difference. First operand 96 states and 99 transitions. Second operand 41 states. [2020-10-14 18:00:55,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:00:55,115 INFO L93 Difference]: Finished difference Result 114 states and 120 transitions. [2020-10-14 18:00:55,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-14 18:00:55,116 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 89 [2020-10-14 18:00:55,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:00:55,117 INFO L225 Difference]: With dead ends: 114 [2020-10-14 18:00:55,117 INFO L226 Difference]: Without dead ends: 99 [2020-10-14 18:00:55,118 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=782, Invalid=858, Unknown=0, NotChecked=0, Total=1640 [2020-10-14 18:00:55,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-10-14 18:00:55,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 98. [2020-10-14 18:00:55,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-14 18:00:55,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 101 transitions. [2020-10-14 18:00:55,123 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 101 transitions. Word has length 89 [2020-10-14 18:00:55,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:00:55,125 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 101 transitions. [2020-10-14 18:00:55,125 INFO L480 AbstractCegarLoop]: Interpolant automaton has 41 states. [2020-10-14 18:00:55,125 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 101 transitions. [2020-10-14 18:00:55,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-14 18:00:55,128 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:00:55,128 INFO L422 BasicCegarLoop]: trace histogram [38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:00:55,128 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-14 18:00:55,128 INFO L427 AbstractCegarLoop]: === Iteration 40 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:00:55,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:00:55,129 INFO L82 PathProgramCache]: Analyzing trace with hash 623590625, now seen corresponding path program 38 times [2020-10-14 18:00:55,129 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:00:55,129 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1567370439] [2020-10-14 18:00:55,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:00:55,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:00:55,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:55,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:57,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:00:57,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-14 18:00:57,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:00:57,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2398 [2020-10-14 18:00:57,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:00:57,542 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:00:57,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 40 [2020-10-14 18:00:57,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:00:57,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 18:00:57,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:00:58,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:00:58,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:00:58,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:58,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:00:58,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:00:58,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:00:58,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:00:58,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:00:58,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:00:58,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:00:58,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:00:58,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:00:58,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:00:58,518 INFO L134 CoverageAnalysis]: Checked inductivity of 1444 backedges. 0 proven. 1444 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 18:00:58,518 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1567370439] [2020-10-14 18:00:58,518 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:00:58,518 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2020-10-14 18:00:58,518 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487402292] [2020-10-14 18:00:58,519 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2020-10-14 18:00:58,519 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:00:58,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2020-10-14 18:00:58,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=822, Invalid=900, Unknown=0, NotChecked=0, Total=1722 [2020-10-14 18:00:58,520 INFO L87 Difference]: Start difference. First operand 98 states and 101 transitions. Second operand 42 states. [2020-10-14 18:00:58,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:00:58,691 INFO L93 Difference]: Finished difference Result 116 states and 122 transitions. [2020-10-14 18:00:58,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-10-14 18:00:58,692 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 91 [2020-10-14 18:00:58,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:00:58,693 INFO L225 Difference]: With dead ends: 116 [2020-10-14 18:00:58,693 INFO L226 Difference]: Without dead ends: 101 [2020-10-14 18:00:58,694 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=822, Invalid=900, Unknown=0, NotChecked=0, Total=1722 [2020-10-14 18:00:58,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-10-14 18:00:58,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 100. [2020-10-14 18:00:58,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-10-14 18:00:58,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 103 transitions. [2020-10-14 18:00:58,699 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 103 transitions. Word has length 91 [2020-10-14 18:00:58,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:00:58,699 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 103 transitions. [2020-10-14 18:00:58,699 INFO L480 AbstractCegarLoop]: Interpolant automaton has 42 states. [2020-10-14 18:00:58,699 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 103 transitions. [2020-10-14 18:00:58,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-14 18:00:58,700 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:00:58,700 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:00:58,700 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-14 18:00:58,701 INFO L427 AbstractCegarLoop]: === Iteration 41 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:00:58,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:00:58,701 INFO L82 PathProgramCache]: Analyzing trace with hash -2103518081, now seen corresponding path program 39 times [2020-10-14 18:00:58,701 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:00:58,701 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [966656087] [2020-10-14 18:00:58,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:00:58,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:00:58,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:00:58,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:01:01,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:01:01,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-14 18:01:01,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:01:01,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2604 [2020-10-14 18:01:01,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:01:01,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:01:01,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 41 [2020-10-14 18:01:01,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:01:01,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-14 18:01:01,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:01:02,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:01:02,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:01:02,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:01:02,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:01:02,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:01:02,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:01:02,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:01:02,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:01:02,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:01:02,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:01:02,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:01:02,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:01:02,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:01:02,282 INFO L134 CoverageAnalysis]: Checked inductivity of 1521 backedges. 0 proven. 1521 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 18:01:02,282 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [966656087] [2020-10-14 18:01:02,282 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:01:02,282 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2020-10-14 18:01:02,282 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601896273] [2020-10-14 18:01:02,283 INFO L459 AbstractCegarLoop]: Interpolant automaton has 43 states [2020-10-14 18:01:02,283 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:01:02,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2020-10-14 18:01:02,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=863, Invalid=943, Unknown=0, NotChecked=0, Total=1806 [2020-10-14 18:01:02,284 INFO L87 Difference]: Start difference. First operand 100 states and 103 transitions. Second operand 43 states. [2020-10-14 18:01:02,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:01:02,605 INFO L93 Difference]: Finished difference Result 118 states and 124 transitions. [2020-10-14 18:01:02,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-10-14 18:01:02,606 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 93 [2020-10-14 18:01:02,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:01:02,607 INFO L225 Difference]: With dead ends: 118 [2020-10-14 18:01:02,607 INFO L226 Difference]: Without dead ends: 103 [2020-10-14 18:01:02,608 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=863, Invalid=943, Unknown=0, NotChecked=0, Total=1806 [2020-10-14 18:01:02,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-10-14 18:01:02,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 102. [2020-10-14 18:01:02,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-10-14 18:01:02,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 105 transitions. [2020-10-14 18:01:02,614 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 105 transitions. Word has length 93 [2020-10-14 18:01:02,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:01:02,615 INFO L479 AbstractCegarLoop]: Abstraction has 102 states and 105 transitions. [2020-10-14 18:01:02,615 INFO L480 AbstractCegarLoop]: Interpolant automaton has 43 states. [2020-10-14 18:01:02,615 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 105 transitions. [2020-10-14 18:01:02,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-14 18:01:02,615 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:01:02,616 INFO L422 BasicCegarLoop]: trace histogram [40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:01:02,616 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-14 18:01:02,616 INFO L427 AbstractCegarLoop]: === Iteration 42 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:01:02,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:01:02,616 INFO L82 PathProgramCache]: Analyzing trace with hash 1370033309, now seen corresponding path program 40 times [2020-10-14 18:01:02,616 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:01:02,617 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [620382513] [2020-10-14 18:01:02,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:01:02,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:01:02,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:01:02,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:01:05,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:01:05,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-14 18:01:05,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:01:05,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2889 [2020-10-14 18:01:05,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:01:05,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:01:05,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 42 [2020-10-14 18:01:05,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:01:05,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 18:01:05,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:01:06,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:01:06,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:01:06,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:01:06,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:01:06,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:01:06,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:01:06,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:01:06,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:01:06,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:01:06,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:01:06,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:01:06,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:01:06,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:01:06,499 INFO L134 CoverageAnalysis]: Checked inductivity of 1600 backedges. 0 proven. 1600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 18:01:06,500 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [620382513] [2020-10-14 18:01:06,500 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:01:06,500 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2020-10-14 18:01:06,500 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523889086] [2020-10-14 18:01:06,500 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2020-10-14 18:01:06,500 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:01:06,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2020-10-14 18:01:06,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=905, Invalid=987, Unknown=0, NotChecked=0, Total=1892 [2020-10-14 18:01:06,501 INFO L87 Difference]: Start difference. First operand 102 states and 105 transitions. Second operand 44 states. [2020-10-14 18:01:06,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:01:06,772 INFO L93 Difference]: Finished difference Result 120 states and 126 transitions. [2020-10-14 18:01:06,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-10-14 18:01:06,773 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 95 [2020-10-14 18:01:06,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:01:06,773 INFO L225 Difference]: With dead ends: 120 [2020-10-14 18:01:06,774 INFO L226 Difference]: Without dead ends: 105 [2020-10-14 18:01:06,775 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=905, Invalid=987, Unknown=0, NotChecked=0, Total=1892 [2020-10-14 18:01:06,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-10-14 18:01:06,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 104. [2020-10-14 18:01:06,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-10-14 18:01:06,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 107 transitions. [2020-10-14 18:01:06,779 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 107 transitions. Word has length 95 [2020-10-14 18:01:06,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:01:06,779 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 107 transitions. [2020-10-14 18:01:06,779 INFO L480 AbstractCegarLoop]: Interpolant automaton has 44 states. [2020-10-14 18:01:06,779 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 107 transitions. [2020-10-14 18:01:06,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-14 18:01:06,780 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:01:06,780 INFO L422 BasicCegarLoop]: trace histogram [41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:01:06,780 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-14 18:01:06,780 INFO L427 AbstractCegarLoop]: === Iteration 43 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:01:06,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:01:06,780 INFO L82 PathProgramCache]: Analyzing trace with hash -2031637189, now seen corresponding path program 41 times [2020-10-14 18:01:06,780 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:01:06,781 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [692833243] [2020-10-14 18:01:06,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:01:06,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:01:06,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:01:06,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:01:09,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:01:09,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-14 18:01:09,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:01:09,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2985 [2020-10-14 18:01:09,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:01:09,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:01:09,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 43 [2020-10-14 18:01:09,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:01:09,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-14 18:01:09,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:01:10,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:01:10,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:01:10,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:01:10,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:01:10,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:01:10,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:01:10,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:01:10,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:01:10,791 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:01:10,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:01:10,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:01:10,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:01:10,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:01:10,801 INFO L134 CoverageAnalysis]: Checked inductivity of 1681 backedges. 0 proven. 1681 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 18:01:10,801 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [692833243] [2020-10-14 18:01:10,801 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:01:10,801 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2020-10-14 18:01:10,801 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462589031] [2020-10-14 18:01:10,802 INFO L459 AbstractCegarLoop]: Interpolant automaton has 45 states [2020-10-14 18:01:10,802 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:01:10,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2020-10-14 18:01:10,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=948, Invalid=1032, Unknown=0, NotChecked=0, Total=1980 [2020-10-14 18:01:10,803 INFO L87 Difference]: Start difference. First operand 104 states and 107 transitions. Second operand 45 states. [2020-10-14 18:01:11,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:01:11,049 INFO L93 Difference]: Finished difference Result 122 states and 128 transitions. [2020-10-14 18:01:11,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-10-14 18:01:11,050 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 97 [2020-10-14 18:01:11,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:01:11,051 INFO L225 Difference]: With dead ends: 122 [2020-10-14 18:01:11,051 INFO L226 Difference]: Without dead ends: 107 [2020-10-14 18:01:11,052 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=948, Invalid=1032, Unknown=0, NotChecked=0, Total=1980 [2020-10-14 18:01:11,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-10-14 18:01:11,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 106. [2020-10-14 18:01:11,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-10-14 18:01:11,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 109 transitions. [2020-10-14 18:01:11,060 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 109 transitions. Word has length 97 [2020-10-14 18:01:11,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:01:11,062 INFO L479 AbstractCegarLoop]: Abstraction has 106 states and 109 transitions. [2020-10-14 18:01:11,062 INFO L480 AbstractCegarLoop]: Interpolant automaton has 45 states. [2020-10-14 18:01:11,063 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 109 transitions. [2020-10-14 18:01:11,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-14 18:01:11,064 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:01:11,064 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:01:11,064 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-14 18:01:11,064 INFO L427 AbstractCegarLoop]: === Iteration 44 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:01:11,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:01:11,065 INFO L82 PathProgramCache]: Analyzing trace with hash 1728093785, now seen corresponding path program 42 times [2020-10-14 18:01:11,066 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:01:11,066 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [243046749] [2020-10-14 18:01:11,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:01:11,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:01:11,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:01:11,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:01:14,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:01:14,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-14 18:01:14,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:01:14,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3345 [2020-10-14 18:01:14,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:01:14,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:01:14,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 44 [2020-10-14 18:01:14,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:01:14,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-14 18:01:14,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:01:15,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:01:15,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:01:15,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:01:15,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:01:15,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:01:15,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:01:15,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:01:15,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:01:15,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:01:15,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:01:15,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:01:15,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:01:15,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:01:15,510 INFO L134 CoverageAnalysis]: Checked inductivity of 1764 backedges. 0 proven. 1764 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 18:01:15,510 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [243046749] [2020-10-14 18:01:15,510 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:01:15,510 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2020-10-14 18:01:15,510 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748431379] [2020-10-14 18:01:15,511 INFO L459 AbstractCegarLoop]: Interpolant automaton has 46 states [2020-10-14 18:01:15,511 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:01:15,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2020-10-14 18:01:15,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=992, Invalid=1078, Unknown=0, NotChecked=0, Total=2070 [2020-10-14 18:01:15,512 INFO L87 Difference]: Start difference. First operand 106 states and 109 transitions. Second operand 46 states. [2020-10-14 18:01:15,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:01:15,762 INFO L93 Difference]: Finished difference Result 124 states and 130 transitions. [2020-10-14 18:01:15,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-10-14 18:01:15,763 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 99 [2020-10-14 18:01:15,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:01:15,764 INFO L225 Difference]: With dead ends: 124 [2020-10-14 18:01:15,764 INFO L226 Difference]: Without dead ends: 109 [2020-10-14 18:01:15,765 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=992, Invalid=1078, Unknown=0, NotChecked=0, Total=2070 [2020-10-14 18:01:15,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-10-14 18:01:15,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 108. [2020-10-14 18:01:15,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-10-14 18:01:15,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 111 transitions. [2020-10-14 18:01:15,770 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 111 transitions. Word has length 99 [2020-10-14 18:01:15,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:01:15,770 INFO L479 AbstractCegarLoop]: Abstraction has 108 states and 111 transitions. [2020-10-14 18:01:15,770 INFO L480 AbstractCegarLoop]: Interpolant automaton has 46 states. [2020-10-14 18:01:15,770 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 111 transitions. [2020-10-14 18:01:15,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-14 18:01:15,771 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:01:15,771 INFO L422 BasicCegarLoop]: trace histogram [43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:01:15,771 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-14 18:01:15,771 INFO L427 AbstractCegarLoop]: === Iteration 45 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:01:15,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:01:15,772 INFO L82 PathProgramCache]: Analyzing trace with hash -1532903433, now seen corresponding path program 43 times [2020-10-14 18:01:15,772 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:01:15,772 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1785119451] [2020-10-14 18:01:15,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:01:15,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:01:15,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:01:15,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:01:19,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:01:19,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-14 18:01:19,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:01:19,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3401 [2020-10-14 18:01:19,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:01:19,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:01:19,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 45 [2020-10-14 18:01:19,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:01:19,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 18:01:19,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:01:20,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:01:20,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:01:20,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:01:20,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:01:20,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:01:20,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:01:20,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:01:20,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:01:20,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:01:20,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:01:20,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:01:20,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:01:20,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:01:20,315 INFO L134 CoverageAnalysis]: Checked inductivity of 1849 backedges. 0 proven. 1849 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 18:01:20,315 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1785119451] [2020-10-14 18:01:20,315 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:01:20,316 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2020-10-14 18:01:20,316 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081254190] [2020-10-14 18:01:20,316 INFO L459 AbstractCegarLoop]: Interpolant automaton has 47 states [2020-10-14 18:01:20,316 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:01:20,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2020-10-14 18:01:20,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1037, Invalid=1125, Unknown=0, NotChecked=0, Total=2162 [2020-10-14 18:01:20,317 INFO L87 Difference]: Start difference. First operand 108 states and 111 transitions. Second operand 47 states. [2020-10-14 18:01:20,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:01:20,597 INFO L93 Difference]: Finished difference Result 126 states and 132 transitions. [2020-10-14 18:01:20,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-10-14 18:01:20,598 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 101 [2020-10-14 18:01:20,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:01:20,599 INFO L225 Difference]: With dead ends: 126 [2020-10-14 18:01:20,600 INFO L226 Difference]: Without dead ends: 111 [2020-10-14 18:01:20,600 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1037, Invalid=1125, Unknown=0, NotChecked=0, Total=2162 [2020-10-14 18:01:20,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-10-14 18:01:20,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 110. [2020-10-14 18:01:20,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-10-14 18:01:20,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 113 transitions. [2020-10-14 18:01:20,605 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 113 transitions. Word has length 101 [2020-10-14 18:01:20,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:01:20,606 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 113 transitions. [2020-10-14 18:01:20,606 INFO L480 AbstractCegarLoop]: Interpolant automaton has 47 states. [2020-10-14 18:01:20,606 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 113 transitions. [2020-10-14 18:01:20,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-14 18:01:20,607 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:01:20,607 INFO L422 BasicCegarLoop]: trace histogram [44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:01:20,607 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-14 18:01:20,607 INFO L427 AbstractCegarLoop]: === Iteration 46 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:01:20,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:01:20,608 INFO L82 PathProgramCache]: Analyzing trace with hash -25103851, now seen corresponding path program 44 times [2020-10-14 18:01:20,608 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:01:20,608 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1559306850] [2020-10-14 18:01:20,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:01:20,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:01:20,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:01:20,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:01:24,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:01:24,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-14 18:01:24,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:01:24,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3730 [2020-10-14 18:01:24,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:01:24,359 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:01:24,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 46 [2020-10-14 18:01:24,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:01:24,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 18:01:24,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:01:25,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:01:25,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:01:25,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:01:25,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:01:25,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:01:25,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:01:25,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:01:25,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:01:25,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:01:25,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:01:25,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:01:25,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:01:25,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:01:25,547 INFO L134 CoverageAnalysis]: Checked inductivity of 1936 backedges. 0 proven. 1936 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 18:01:25,548 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1559306850] [2020-10-14 18:01:25,548 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:01:25,548 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2020-10-14 18:01:25,548 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103959185] [2020-10-14 18:01:25,548 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2020-10-14 18:01:25,549 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:01:25,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2020-10-14 18:01:25,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1083, Invalid=1173, Unknown=0, NotChecked=0, Total=2256 [2020-10-14 18:01:25,549 INFO L87 Difference]: Start difference. First operand 110 states and 113 transitions. Second operand 48 states. [2020-10-14 18:01:25,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:01:25,888 INFO L93 Difference]: Finished difference Result 128 states and 134 transitions. [2020-10-14 18:01:25,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-10-14 18:01:25,889 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 103 [2020-10-14 18:01:25,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:01:25,891 INFO L225 Difference]: With dead ends: 128 [2020-10-14 18:01:25,891 INFO L226 Difference]: Without dead ends: 113 [2020-10-14 18:01:25,892 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1083, Invalid=1173, Unknown=0, NotChecked=0, Total=2256 [2020-10-14 18:01:25,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-10-14 18:01:25,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 112. [2020-10-14 18:01:25,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-10-14 18:01:25,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 115 transitions. [2020-10-14 18:01:25,897 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 115 transitions. Word has length 103 [2020-10-14 18:01:25,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:01:25,898 INFO L479 AbstractCegarLoop]: Abstraction has 112 states and 115 transitions. [2020-10-14 18:01:25,898 INFO L480 AbstractCegarLoop]: Interpolant automaton has 48 states. [2020-10-14 18:01:25,898 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 115 transitions. [2020-10-14 18:01:25,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-14 18:01:25,898 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:01:25,898 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:01:25,899 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-14 18:01:25,899 INFO L427 AbstractCegarLoop]: === Iteration 47 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:01:25,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:01:25,899 INFO L82 PathProgramCache]: Analyzing trace with hash 1566315699, now seen corresponding path program 45 times [2020-10-14 18:01:25,899 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:01:25,899 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [271387813] [2020-10-14 18:01:25,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:01:25,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:01:25,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:01:25,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:01:29,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:01:29,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-14 18:01:29,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:01:29,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3856 [2020-10-14 18:01:29,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:01:29,771 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:01:29,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 47 [2020-10-14 18:01:29,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:01:29,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-14 18:01:29,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:01:30,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:01:30,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:01:30,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:01:30,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:01:30,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:01:30,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:01:30,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:01:30,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:01:30,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:01:30,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:01:30,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:01:30,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:01:30,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:01:30,985 INFO L134 CoverageAnalysis]: Checked inductivity of 2025 backedges. 0 proven. 2025 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 18:01:30,985 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [271387813] [2020-10-14 18:01:30,985 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:01:30,985 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49] total 49 [2020-10-14 18:01:30,986 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012305126] [2020-10-14 18:01:30,986 INFO L459 AbstractCegarLoop]: Interpolant automaton has 49 states [2020-10-14 18:01:30,986 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:01:30,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2020-10-14 18:01:30,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1130, Invalid=1222, Unknown=0, NotChecked=0, Total=2352 [2020-10-14 18:01:30,987 INFO L87 Difference]: Start difference. First operand 112 states and 115 transitions. Second operand 49 states. [2020-10-14 18:01:31,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:01:31,354 INFO L93 Difference]: Finished difference Result 130 states and 136 transitions. [2020-10-14 18:01:31,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2020-10-14 18:01:31,354 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 105 [2020-10-14 18:01:31,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:01:31,356 INFO L225 Difference]: With dead ends: 130 [2020-10-14 18:01:31,356 INFO L226 Difference]: Without dead ends: 115 [2020-10-14 18:01:31,357 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1130, Invalid=1222, Unknown=0, NotChecked=0, Total=2352 [2020-10-14 18:01:31,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-10-14 18:01:31,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 114. [2020-10-14 18:01:31,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-10-14 18:01:31,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 117 transitions. [2020-10-14 18:01:31,362 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 117 transitions. Word has length 105 [2020-10-14 18:01:31,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:01:31,362 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 117 transitions. [2020-10-14 18:01:31,362 INFO L480 AbstractCegarLoop]: Interpolant automaton has 49 states. [2020-10-14 18:01:31,363 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 117 transitions. [2020-10-14 18:01:31,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-14 18:01:31,363 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:01:31,363 INFO L422 BasicCegarLoop]: trace histogram [46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:01:31,364 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-14 18:01:31,364 INFO L427 AbstractCegarLoop]: === Iteration 48 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:01:31,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:01:31,364 INFO L82 PathProgramCache]: Analyzing trace with hash 1912145873, now seen corresponding path program 46 times [2020-10-14 18:01:31,364 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:01:31,364 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [786837447] [2020-10-14 18:01:31,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:01:31,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:01:31,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:01:31,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:01:35,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:01:35,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-14 18:01:35,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:01:35,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4273 [2020-10-14 18:01:35,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:01:35,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:01:35,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 48 [2020-10-14 18:01:35,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:01:35,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-14 18:01:35,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:01:36,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:01:36,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:01:36,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:01:36,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:01:36,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:01:36,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:01:36,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:01:36,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:01:36,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:01:36,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:01:36,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:01:36,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:01:36,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:01:36,949 INFO L134 CoverageAnalysis]: Checked inductivity of 2116 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 18:01:36,949 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [786837447] [2020-10-14 18:01:36,950 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:01:36,950 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50] total 50 [2020-10-14 18:01:36,950 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591519844] [2020-10-14 18:01:36,950 INFO L459 AbstractCegarLoop]: Interpolant automaton has 50 states [2020-10-14 18:01:36,950 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:01:36,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2020-10-14 18:01:36,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1178, Invalid=1272, Unknown=0, NotChecked=0, Total=2450 [2020-10-14 18:01:36,951 INFO L87 Difference]: Start difference. First operand 114 states and 117 transitions. Second operand 50 states. [2020-10-14 18:01:37,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:01:37,218 INFO L93 Difference]: Finished difference Result 132 states and 138 transitions. [2020-10-14 18:01:37,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-10-14 18:01:37,219 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 107 [2020-10-14 18:01:37,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:01:37,220 INFO L225 Difference]: With dead ends: 132 [2020-10-14 18:01:37,220 INFO L226 Difference]: Without dead ends: 117 [2020-10-14 18:01:37,221 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1178, Invalid=1272, Unknown=0, NotChecked=0, Total=2450 [2020-10-14 18:01:37,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-10-14 18:01:37,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 116. [2020-10-14 18:01:37,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-10-14 18:01:37,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 119 transitions. [2020-10-14 18:01:37,226 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 119 transitions. Word has length 107 [2020-10-14 18:01:37,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:01:37,227 INFO L479 AbstractCegarLoop]: Abstraction has 116 states and 119 transitions. [2020-10-14 18:01:37,227 INFO L480 AbstractCegarLoop]: Interpolant automaton has 50 states. [2020-10-14 18:01:37,227 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 119 transitions. [2020-10-14 18:01:37,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-14 18:01:37,228 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:01:37,228 INFO L422 BasicCegarLoop]: trace histogram [47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:01:37,228 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-14 18:01:37,228 INFO L427 AbstractCegarLoop]: === Iteration 49 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:01:37,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:01:37,228 INFO L82 PathProgramCache]: Analyzing trace with hash -752506001, now seen corresponding path program 47 times [2020-10-14 18:01:37,229 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:01:37,229 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1352707686] [2020-10-14 18:01:37,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:01:37,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:01:37,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:01:37,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:01:41,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:01:41,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-14 18:01:41,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:01:41,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4458 [2020-10-14 18:01:41,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:01:41,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:01:41,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 49 [2020-10-14 18:01:41,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:01:41,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-14 18:01:41,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:01:43,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:01:43,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:01:43,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:01:43,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:01:43,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:01:43,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:01:43,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:01:43,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:01:43,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:01:43,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:01:43,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:01:43,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:01:43,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:01:43,037 INFO L134 CoverageAnalysis]: Checked inductivity of 2209 backedges. 0 proven. 2209 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 18:01:43,038 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1352707686] [2020-10-14 18:01:43,038 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:01:43,038 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51] total 51 [2020-10-14 18:01:43,038 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200793850] [2020-10-14 18:01:43,038 INFO L459 AbstractCegarLoop]: Interpolant automaton has 51 states [2020-10-14 18:01:43,038 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:01:43,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2020-10-14 18:01:43,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1227, Invalid=1323, Unknown=0, NotChecked=0, Total=2550 [2020-10-14 18:01:43,039 INFO L87 Difference]: Start difference. First operand 116 states and 119 transitions. Second operand 51 states. [2020-10-14 18:01:43,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:01:43,435 INFO L93 Difference]: Finished difference Result 134 states and 140 transitions. [2020-10-14 18:01:43,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-10-14 18:01:43,436 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 109 [2020-10-14 18:01:43,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:01:43,437 INFO L225 Difference]: With dead ends: 134 [2020-10-14 18:01:43,437 INFO L226 Difference]: Without dead ends: 119 [2020-10-14 18:01:43,438 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1227, Invalid=1323, Unknown=0, NotChecked=0, Total=2550 [2020-10-14 18:01:43,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-10-14 18:01:43,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 118. [2020-10-14 18:01:43,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-14 18:01:43,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 121 transitions. [2020-10-14 18:01:43,444 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 121 transitions. Word has length 109 [2020-10-14 18:01:43,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:01:43,444 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 121 transitions. [2020-10-14 18:01:43,444 INFO L480 AbstractCegarLoop]: Interpolant automaton has 51 states. [2020-10-14 18:01:43,445 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 121 transitions. [2020-10-14 18:01:43,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-14 18:01:43,445 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:01:43,445 INFO L422 BasicCegarLoop]: trace histogram [48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:01:43,446 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-14 18:01:43,446 INFO L427 AbstractCegarLoop]: === Iteration 50 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:01:43,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:01:43,446 INFO L82 PathProgramCache]: Analyzing trace with hash -1682448499, now seen corresponding path program 48 times [2020-10-14 18:01:43,446 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:01:43,446 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [421232620] [2020-10-14 18:01:43,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:01:43,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:01:43,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:01:43,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:01:48,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:01:48,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-14 18:01:48,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:01:48,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-14 18:01:48,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:01:48,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:01:48,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 50 [2020-10-14 18:01:48,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:01:48,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-14 18:01:48,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:01:49,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:01:49,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:01:49,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:01:49,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:01:49,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:01:49,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:01:49,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:01:49,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:01:49,865 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:01:49,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:01:49,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:01:49,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:01:49,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:01:49,876 INFO L134 CoverageAnalysis]: Checked inductivity of 2304 backedges. 0 proven. 2304 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 18:01:49,876 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [421232620] [2020-10-14 18:01:49,876 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:01:49,876 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52] total 52 [2020-10-14 18:01:49,877 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386472254] [2020-10-14 18:01:49,877 INFO L459 AbstractCegarLoop]: Interpolant automaton has 52 states [2020-10-14 18:01:49,877 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:01:49,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2020-10-14 18:01:49,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1277, Invalid=1375, Unknown=0, NotChecked=0, Total=2652 [2020-10-14 18:01:49,878 INFO L87 Difference]: Start difference. First operand 118 states and 121 transitions. Second operand 52 states. [2020-10-14 18:01:50,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:01:50,270 INFO L93 Difference]: Finished difference Result 136 states and 142 transitions. [2020-10-14 18:01:50,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-10-14 18:01:50,271 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 111 [2020-10-14 18:01:50,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:01:50,272 INFO L225 Difference]: With dead ends: 136 [2020-10-14 18:01:50,273 INFO L226 Difference]: Without dead ends: 121 [2020-10-14 18:01:50,273 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1277, Invalid=1375, Unknown=0, NotChecked=0, Total=2652 [2020-10-14 18:01:50,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-10-14 18:01:50,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 120. [2020-10-14 18:01:50,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-14 18:01:50,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 123 transitions. [2020-10-14 18:01:50,278 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 123 transitions. Word has length 111 [2020-10-14 18:01:50,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:01:50,279 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 123 transitions. [2020-10-14 18:01:50,279 INFO L480 AbstractCegarLoop]: Interpolant automaton has 52 states. [2020-10-14 18:01:50,279 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 123 transitions. [2020-10-14 18:01:50,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-14 18:01:50,280 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:01:50,280 INFO L422 BasicCegarLoop]: trace histogram [49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:01:50,280 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-10-14 18:01:50,280 INFO L427 AbstractCegarLoop]: === Iteration 51 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:01:50,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:01:50,281 INFO L82 PathProgramCache]: Analyzing trace with hash -2003991509, now seen corresponding path program 49 times [2020-10-14 18:01:50,281 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:01:50,281 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [115590355] [2020-10-14 18:01:50,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:01:50,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:01:50,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:01:50,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:01:55,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:01:55,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-14 18:01:55,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:01:55,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-14 18:01:55,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:01:55,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:01:55,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 51 [2020-10-14 18:01:55,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:01:55,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-14 18:01:55,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:01:56,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:01:56,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:01:56,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:01:56,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:01:56,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:01:56,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:01:56,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:01:56,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:01:56,734 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:01:56,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:01:56,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:01:56,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:01:56,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:01:56,745 INFO L134 CoverageAnalysis]: Checked inductivity of 2401 backedges. 0 proven. 2401 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 18:01:56,745 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [115590355] [2020-10-14 18:01:56,745 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:01:56,746 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53] total 53 [2020-10-14 18:01:56,746 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973811561] [2020-10-14 18:01:56,746 INFO L459 AbstractCegarLoop]: Interpolant automaton has 53 states [2020-10-14 18:01:56,746 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:01:56,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2020-10-14 18:01:56,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1328, Invalid=1428, Unknown=0, NotChecked=0, Total=2756 [2020-10-14 18:01:56,747 INFO L87 Difference]: Start difference. First operand 120 states and 123 transitions. Second operand 53 states. [2020-10-14 18:01:57,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:01:57,011 INFO L93 Difference]: Finished difference Result 138 states and 144 transitions. [2020-10-14 18:01:57,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2020-10-14 18:01:57,017 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 113 [2020-10-14 18:01:57,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:01:57,018 INFO L225 Difference]: With dead ends: 138 [2020-10-14 18:01:57,019 INFO L226 Difference]: Without dead ends: 123 [2020-10-14 18:01:57,019 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1328, Invalid=1428, Unknown=0, NotChecked=0, Total=2756 [2020-10-14 18:01:57,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-10-14 18:01:57,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 122. [2020-10-14 18:01:57,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-10-14 18:01:57,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 125 transitions. [2020-10-14 18:01:57,024 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 125 transitions. Word has length 113 [2020-10-14 18:01:57,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:01:57,025 INFO L479 AbstractCegarLoop]: Abstraction has 122 states and 125 transitions. [2020-10-14 18:01:57,025 INFO L480 AbstractCegarLoop]: Interpolant automaton has 53 states. [2020-10-14 18:01:57,026 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 125 transitions. [2020-10-14 18:01:57,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-14 18:01:57,026 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:01:57,026 INFO L422 BasicCegarLoop]: trace histogram [50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:01:57,027 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-10-14 18:01:57,027 INFO L427 AbstractCegarLoop]: === Iteration 52 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:01:57,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:01:57,027 INFO L82 PathProgramCache]: Analyzing trace with hash -1769178807, now seen corresponding path program 50 times [2020-10-14 18:01:57,029 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:01:57,029 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1548981254] [2020-10-14 18:01:57,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:01:57,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:01:57,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:01:57,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:02:02,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:02:02,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-14 18:02:02,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:02:02,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-14 18:02:02,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:02:02,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:02:02,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 52 [2020-10-14 18:02:02,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:02:02,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-14 18:02:02,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:02:03,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:02:03,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:02:03,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:02:03,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:02:03,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:02:03,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:02:03,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:02:03,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:02:03,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:02:03,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:02:03,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:02:03,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:02:03,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:02:03,577 INFO L134 CoverageAnalysis]: Checked inductivity of 2500 backedges. 0 proven. 2500 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 18:02:03,577 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1548981254] [2020-10-14 18:02:03,577 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:02:03,577 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54] total 54 [2020-10-14 18:02:03,577 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547797286] [2020-10-14 18:02:03,578 INFO L459 AbstractCegarLoop]: Interpolant automaton has 54 states [2020-10-14 18:02:03,578 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:02:03,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2020-10-14 18:02:03,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1380, Invalid=1482, Unknown=0, NotChecked=0, Total=2862 [2020-10-14 18:02:03,579 INFO L87 Difference]: Start difference. First operand 122 states and 125 transitions. Second operand 54 states. [2020-10-14 18:02:03,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:02:03,960 INFO L93 Difference]: Finished difference Result 140 states and 146 transitions. [2020-10-14 18:02:03,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2020-10-14 18:02:03,961 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 115 [2020-10-14 18:02:03,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:02:03,962 INFO L225 Difference]: With dead ends: 140 [2020-10-14 18:02:03,962 INFO L226 Difference]: Without dead ends: 125 [2020-10-14 18:02:03,963 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1380, Invalid=1482, Unknown=0, NotChecked=0, Total=2862 [2020-10-14 18:02:03,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-10-14 18:02:03,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 124. [2020-10-14 18:02:03,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-10-14 18:02:03,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 127 transitions. [2020-10-14 18:02:03,972 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 127 transitions. Word has length 115 [2020-10-14 18:02:03,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:02:03,972 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 127 transitions. [2020-10-14 18:02:03,972 INFO L480 AbstractCegarLoop]: Interpolant automaton has 54 states. [2020-10-14 18:02:03,972 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 127 transitions. [2020-10-14 18:02:03,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-14 18:02:03,973 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:02:03,973 INFO L422 BasicCegarLoop]: trace histogram [51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:02:03,973 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2020-10-14 18:02:03,973 INFO L427 AbstractCegarLoop]: === Iteration 53 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:02:03,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:02:03,974 INFO L82 PathProgramCache]: Analyzing trace with hash 547528423, now seen corresponding path program 51 times [2020-10-14 18:02:03,975 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:02:03,975 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [100568906] [2020-10-14 18:02:03,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:02:03,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:02:04,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:02:05,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:02:09,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:02:09,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-14 18:02:09,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:02:09,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-14 18:02:09,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:02:09,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:02:09,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 53 [2020-10-14 18:02:09,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:02:09,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-14 18:02:09,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:02:10,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:02:10,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:02:10,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:02:10,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:02:10,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:02:10,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:02:10,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:02:10,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:02:10,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:02:10,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:02:10,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:02:10,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:02:10,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:02:10,595 INFO L134 CoverageAnalysis]: Checked inductivity of 2601 backedges. 0 proven. 2601 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 18:02:10,595 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [100568906] [2020-10-14 18:02:10,595 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:02:10,595 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55] total 55 [2020-10-14 18:02:10,595 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494529158] [2020-10-14 18:02:10,596 INFO L459 AbstractCegarLoop]: Interpolant automaton has 55 states [2020-10-14 18:02:10,596 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:02:10,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2020-10-14 18:02:10,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1433, Invalid=1537, Unknown=0, NotChecked=0, Total=2970 [2020-10-14 18:02:10,596 INFO L87 Difference]: Start difference. First operand 124 states and 127 transitions. Second operand 55 states. [2020-10-14 18:02:10,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:02:10,829 INFO L93 Difference]: Finished difference Result 142 states and 148 transitions. [2020-10-14 18:02:10,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2020-10-14 18:02:10,829 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 117 [2020-10-14 18:02:10,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:02:10,831 INFO L225 Difference]: With dead ends: 142 [2020-10-14 18:02:10,831 INFO L226 Difference]: Without dead ends: 127 [2020-10-14 18:02:10,832 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1433, Invalid=1537, Unknown=0, NotChecked=0, Total=2970 [2020-10-14 18:02:10,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-10-14 18:02:10,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 126. [2020-10-14 18:02:10,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-10-14 18:02:10,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 129 transitions. [2020-10-14 18:02:10,837 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 129 transitions. Word has length 117 [2020-10-14 18:02:10,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:02:10,837 INFO L479 AbstractCegarLoop]: Abstraction has 126 states and 129 transitions. [2020-10-14 18:02:10,837 INFO L480 AbstractCegarLoop]: Interpolant automaton has 55 states. [2020-10-14 18:02:10,837 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 129 transitions. [2020-10-14 18:02:10,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-14 18:02:10,838 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:02:10,838 INFO L422 BasicCegarLoop]: trace histogram [52, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:02:10,838 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-10-14 18:02:10,838 INFO L427 AbstractCegarLoop]: === Iteration 54 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:02:10,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:02:10,839 INFO L82 PathProgramCache]: Analyzing trace with hash 2110117125, now seen corresponding path program 52 times [2020-10-14 18:02:10,839 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:02:10,839 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [774782672] [2020-10-14 18:02:10,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:02:10,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:02:10,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:02:11,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:02:15,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:02:15,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-14 18:02:15,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:02:15,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-14 18:02:15,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:02:15,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:02:15,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 54 [2020-10-14 18:02:15,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:02:15,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 18:02:15,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:02:17,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:02:17,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:02:17,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:02:17,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:02:17,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:02:17,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:02:17,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:02:17,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:02:17,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:02:17,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:02:17,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:02:17,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:02:17,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:02:17,479 INFO L134 CoverageAnalysis]: Checked inductivity of 2704 backedges. 0 proven. 2704 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 18:02:17,480 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [774782672] [2020-10-14 18:02:17,480 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:02:17,480 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56] total 56 [2020-10-14 18:02:17,480 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449854832] [2020-10-14 18:02:17,480 INFO L459 AbstractCegarLoop]: Interpolant automaton has 56 states [2020-10-14 18:02:17,480 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:02:17,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2020-10-14 18:02:17,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1487, Invalid=1593, Unknown=0, NotChecked=0, Total=3080 [2020-10-14 18:02:17,481 INFO L87 Difference]: Start difference. First operand 126 states and 129 transitions. Second operand 56 states. [2020-10-14 18:02:17,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:02:17,881 INFO L93 Difference]: Finished difference Result 144 states and 150 transitions. [2020-10-14 18:02:17,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2020-10-14 18:02:17,882 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 119 [2020-10-14 18:02:17,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:02:17,883 INFO L225 Difference]: With dead ends: 144 [2020-10-14 18:02:17,883 INFO L226 Difference]: Without dead ends: 129 [2020-10-14 18:02:17,884 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1487, Invalid=1593, Unknown=0, NotChecked=0, Total=3080 [2020-10-14 18:02:17,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-10-14 18:02:17,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 128. [2020-10-14 18:02:17,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-10-14 18:02:17,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 131 transitions. [2020-10-14 18:02:17,888 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 131 transitions. Word has length 119 [2020-10-14 18:02:17,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:02:17,888 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 131 transitions. [2020-10-14 18:02:17,889 INFO L480 AbstractCegarLoop]: Interpolant automaton has 56 states. [2020-10-14 18:02:17,889 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 131 transitions. [2020-10-14 18:02:17,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-14 18:02:17,889 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:02:17,890 INFO L422 BasicCegarLoop]: trace histogram [53, 53, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:02:17,890 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-10-14 18:02:17,890 INFO L427 AbstractCegarLoop]: === Iteration 55 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:02:17,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:02:17,890 INFO L82 PathProgramCache]: Analyzing trace with hash 519306147, now seen corresponding path program 53 times [2020-10-14 18:02:17,890 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:02:17,890 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1885917118] [2020-10-14 18:02:17,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:02:17,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:02:17,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:02:18,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:02:22,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:02:22,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-14 18:02:22,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:02:22,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 18:02:22,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:02:22,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:02:22,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 55 [2020-10-14 18:02:22,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:02:22,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-14 18:02:22,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:02:24,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:02:24,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:02:24,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:02:24,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:02:24,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:02:24,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:02:24,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:02:24,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:02:24,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:02:24,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:02:24,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:02:24,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:02:24,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:02:24,545 INFO L134 CoverageAnalysis]: Checked inductivity of 2809 backedges. 0 proven. 2809 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 18:02:24,546 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1885917118] [2020-10-14 18:02:24,546 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:02:24,546 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57] total 57 [2020-10-14 18:02:24,546 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098906871] [2020-10-14 18:02:24,547 INFO L459 AbstractCegarLoop]: Interpolant automaton has 57 states [2020-10-14 18:02:24,547 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:02:24,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2020-10-14 18:02:24,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1542, Invalid=1650, Unknown=0, NotChecked=0, Total=3192 [2020-10-14 18:02:24,548 INFO L87 Difference]: Start difference. First operand 128 states and 131 transitions. Second operand 57 states. [2020-10-14 18:02:24,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:02:24,850 INFO L93 Difference]: Finished difference Result 146 states and 152 transitions. [2020-10-14 18:02:24,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2020-10-14 18:02:24,851 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 121 [2020-10-14 18:02:24,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:02:24,852 INFO L225 Difference]: With dead ends: 146 [2020-10-14 18:02:24,853 INFO L226 Difference]: Without dead ends: 131 [2020-10-14 18:02:24,853 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1542, Invalid=1650, Unknown=0, NotChecked=0, Total=3192 [2020-10-14 18:02:24,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-10-14 18:02:24,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 130. [2020-10-14 18:02:24,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-10-14 18:02:24,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 133 transitions. [2020-10-14 18:02:24,858 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 133 transitions. Word has length 121 [2020-10-14 18:02:24,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:02:24,858 INFO L479 AbstractCegarLoop]: Abstraction has 130 states and 133 transitions. [2020-10-14 18:02:24,858 INFO L480 AbstractCegarLoop]: Interpolant automaton has 57 states. [2020-10-14 18:02:24,859 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 133 transitions. [2020-10-14 18:02:24,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-14 18:02:24,859 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:02:24,859 INFO L422 BasicCegarLoop]: trace histogram [54, 54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:02:24,860 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-10-14 18:02:24,860 INFO L427 AbstractCegarLoop]: === Iteration 56 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:02:24,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:02:24,860 INFO L82 PathProgramCache]: Analyzing trace with hash 758313665, now seen corresponding path program 54 times [2020-10-14 18:02:24,860 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:02:24,861 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1379079817] [2020-10-14 18:02:24,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:02:24,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:02:24,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:02:25,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:02:29,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:02:29,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-14 18:02:29,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:02:29,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-14 18:02:29,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:02:29,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:02:29,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 56 [2020-10-14 18:02:29,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:02:29,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-14 18:02:29,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:02:31,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:02:31,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:02:31,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:02:31,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:02:31,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:02:31,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:02:31,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:02:31,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:02:31,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:02:31,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:02:31,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:02:31,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:02:31,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:02:31,625 INFO L134 CoverageAnalysis]: Checked inductivity of 2916 backedges. 0 proven. 2916 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 18:02:31,625 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1379079817] [2020-10-14 18:02:31,625 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:02:31,625 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58] total 58 [2020-10-14 18:02:31,625 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591931494] [2020-10-14 18:02:31,626 INFO L459 AbstractCegarLoop]: Interpolant automaton has 58 states [2020-10-14 18:02:31,626 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:02:31,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2020-10-14 18:02:31,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1598, Invalid=1708, Unknown=0, NotChecked=0, Total=3306 [2020-10-14 18:02:31,627 INFO L87 Difference]: Start difference. First operand 130 states and 133 transitions. Second operand 58 states. [2020-10-14 18:02:32,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:02:32,052 INFO L93 Difference]: Finished difference Result 148 states and 154 transitions. [2020-10-14 18:02:32,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2020-10-14 18:02:32,052 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 123 [2020-10-14 18:02:32,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:02:32,054 INFO L225 Difference]: With dead ends: 148 [2020-10-14 18:02:32,054 INFO L226 Difference]: Without dead ends: 133 [2020-10-14 18:02:32,054 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1598, Invalid=1708, Unknown=0, NotChecked=0, Total=3306 [2020-10-14 18:02:32,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-10-14 18:02:32,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 132. [2020-10-14 18:02:32,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-10-14 18:02:32,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 135 transitions. [2020-10-14 18:02:32,058 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 135 transitions. Word has length 123 [2020-10-14 18:02:32,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:02:32,059 INFO L479 AbstractCegarLoop]: Abstraction has 132 states and 135 transitions. [2020-10-14 18:02:32,059 INFO L480 AbstractCegarLoop]: Interpolant automaton has 58 states. [2020-10-14 18:02:32,059 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 135 transitions. [2020-10-14 18:02:32,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-14 18:02:32,060 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:02:32,060 INFO L422 BasicCegarLoop]: trace histogram [55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:02:32,060 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2020-10-14 18:02:32,060 INFO L427 AbstractCegarLoop]: === Iteration 57 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:02:32,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:02:32,060 INFO L82 PathProgramCache]: Analyzing trace with hash -1483695521, now seen corresponding path program 55 times [2020-10-14 18:02:32,061 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:02:32,061 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2131166815] [2020-10-14 18:02:32,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:02:32,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:02:32,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:02:32,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:02:37,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:02:37,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-14 18:02:37,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:02:37,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-14 18:02:37,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:02:37,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:02:37,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 57 [2020-10-14 18:02:37,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:02:37,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 18:02:37,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:02:38,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:02:38,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:02:38,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:02:38,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:02:38,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:02:38,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:02:38,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:02:38,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:02:38,930 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:02:38,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:02:38,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:02:38,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:02:38,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:02:38,942 INFO L134 CoverageAnalysis]: Checked inductivity of 3025 backedges. 0 proven. 3025 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 18:02:38,942 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2131166815] [2020-10-14 18:02:38,942 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:02:38,943 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59] total 59 [2020-10-14 18:02:38,943 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216085335] [2020-10-14 18:02:38,943 INFO L459 AbstractCegarLoop]: Interpolant automaton has 59 states [2020-10-14 18:02:38,943 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:02:38,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2020-10-14 18:02:38,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1655, Invalid=1767, Unknown=0, NotChecked=0, Total=3422 [2020-10-14 18:02:38,944 INFO L87 Difference]: Start difference. First operand 132 states and 135 transitions. Second operand 59 states. [2020-10-14 18:02:39,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:02:39,401 INFO L93 Difference]: Finished difference Result 150 states and 156 transitions. [2020-10-14 18:02:39,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2020-10-14 18:02:39,402 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 125 [2020-10-14 18:02:39,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:02:39,403 INFO L225 Difference]: With dead ends: 150 [2020-10-14 18:02:39,404 INFO L226 Difference]: Without dead ends: 135 [2020-10-14 18:02:39,404 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1655, Invalid=1767, Unknown=0, NotChecked=0, Total=3422 [2020-10-14 18:02:39,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-10-14 18:02:39,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 134. [2020-10-14 18:02:39,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-10-14 18:02:39,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 137 transitions. [2020-10-14 18:02:39,409 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 137 transitions. Word has length 125 [2020-10-14 18:02:39,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:02:39,409 INFO L479 AbstractCegarLoop]: Abstraction has 134 states and 137 transitions. [2020-10-14 18:02:39,409 INFO L480 AbstractCegarLoop]: Interpolant automaton has 59 states. [2020-10-14 18:02:39,410 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 137 transitions. [2020-10-14 18:02:39,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-14 18:02:39,410 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:02:39,411 INFO L422 BasicCegarLoop]: trace histogram [56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:02:39,411 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2020-10-14 18:02:39,411 INFO L427 AbstractCegarLoop]: === Iteration 58 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:02:39,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:02:39,411 INFO L82 PathProgramCache]: Analyzing trace with hash 19059325, now seen corresponding path program 56 times [2020-10-14 18:02:39,411 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:02:39,412 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [437533775] [2020-10-14 18:02:39,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:02:39,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:02:39,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:02:39,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:02:44,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:02:44,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-14 18:02:44,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:02:44,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-14 18:02:44,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:02:44,448 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:02:44,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 58 [2020-10-14 18:02:44,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:02:44,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-14 18:02:44,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:02:46,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:02:46,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:02:46,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:02:46,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:02:46,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:02:46,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:02:46,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:02:46,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:02:46,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:02:46,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:02:46,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:02:46,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:02:46,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:02:46,340 INFO L134 CoverageAnalysis]: Checked inductivity of 3136 backedges. 0 proven. 3136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 18:02:46,340 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [437533775] [2020-10-14 18:02:46,341 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:02:46,341 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60] total 60 [2020-10-14 18:02:46,341 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337009961] [2020-10-14 18:02:46,341 INFO L459 AbstractCegarLoop]: Interpolant automaton has 60 states [2020-10-14 18:02:46,341 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:02:46,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2020-10-14 18:02:46,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1713, Invalid=1827, Unknown=0, NotChecked=0, Total=3540 [2020-10-14 18:02:46,342 INFO L87 Difference]: Start difference. First operand 134 states and 137 transitions. Second operand 60 states. [2020-10-14 18:02:46,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:02:46,725 INFO L93 Difference]: Finished difference Result 152 states and 158 transitions. [2020-10-14 18:02:46,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2020-10-14 18:02:46,726 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 127 [2020-10-14 18:02:46,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:02:46,727 INFO L225 Difference]: With dead ends: 152 [2020-10-14 18:02:46,727 INFO L226 Difference]: Without dead ends: 137 [2020-10-14 18:02:46,728 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1713, Invalid=1827, Unknown=0, NotChecked=0, Total=3540 [2020-10-14 18:02:46,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-10-14 18:02:46,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 136. [2020-10-14 18:02:46,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-14 18:02:46,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 139 transitions. [2020-10-14 18:02:46,732 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 139 transitions. Word has length 127 [2020-10-14 18:02:46,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:02:46,734 INFO L479 AbstractCegarLoop]: Abstraction has 136 states and 139 transitions. [2020-10-14 18:02:46,735 INFO L480 AbstractCegarLoop]: Interpolant automaton has 60 states. [2020-10-14 18:02:46,735 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 139 transitions. [2020-10-14 18:02:46,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-14 18:02:46,735 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:02:46,736 INFO L422 BasicCegarLoop]: trace histogram [57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:02:46,736 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2020-10-14 18:02:46,736 INFO L427 AbstractCegarLoop]: === Iteration 59 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:02:46,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:02:46,737 INFO L82 PathProgramCache]: Analyzing trace with hash 1057454875, now seen corresponding path program 57 times [2020-10-14 18:02:46,737 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:02:46,737 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2021548365] [2020-10-14 18:02:46,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:02:46,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:02:46,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:02:49,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:02:51,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:02:51,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-14 18:02:51,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:02:51,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-10-14 18:02:51,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:02:51,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:02:51,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 59 [2020-10-14 18:02:51,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:02:51,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-14 18:02:51,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:02:53,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:02:53,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:02:53,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:02:53,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:02:53,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:02:53,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:02:53,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:02:53,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:02:53,771 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:02:53,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:02:53,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:02:53,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:02:53,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:02:53,783 INFO L134 CoverageAnalysis]: Checked inductivity of 3249 backedges. 0 proven. 3249 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 18:02:53,783 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2021548365] [2020-10-14 18:02:53,783 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:02:53,783 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61] total 61 [2020-10-14 18:02:53,783 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642349066] [2020-10-14 18:02:53,784 INFO L459 AbstractCegarLoop]: Interpolant automaton has 61 states [2020-10-14 18:02:53,784 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:02:53,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2020-10-14 18:02:53,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1772, Invalid=1888, Unknown=0, NotChecked=0, Total=3660 [2020-10-14 18:02:53,785 INFO L87 Difference]: Start difference. First operand 136 states and 139 transitions. Second operand 61 states. [2020-10-14 18:02:54,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:02:54,082 INFO L93 Difference]: Finished difference Result 154 states and 160 transitions. [2020-10-14 18:02:54,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2020-10-14 18:02:54,082 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 129 [2020-10-14 18:02:54,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:02:54,083 INFO L225 Difference]: With dead ends: 154 [2020-10-14 18:02:54,083 INFO L226 Difference]: Without dead ends: 139 [2020-10-14 18:02:54,084 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1772, Invalid=1888, Unknown=0, NotChecked=0, Total=3660 [2020-10-14 18:02:54,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-10-14 18:02:54,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 138. [2020-10-14 18:02:54,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-10-14 18:02:54,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 141 transitions. [2020-10-14 18:02:54,091 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 141 transitions. Word has length 129 [2020-10-14 18:02:54,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:02:54,091 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 141 transitions. [2020-10-14 18:02:54,091 INFO L480 AbstractCegarLoop]: Interpolant automaton has 61 states. [2020-10-14 18:02:54,091 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 141 transitions. [2020-10-14 18:02:54,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-14 18:02:54,092 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:02:54,092 INFO L422 BasicCegarLoop]: trace histogram [58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:02:54,092 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2020-10-14 18:02:54,093 INFO L427 AbstractCegarLoop]: === Iteration 60 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:02:54,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:02:54,093 INFO L82 PathProgramCache]: Analyzing trace with hash -1771801543, now seen corresponding path program 58 times [2020-10-14 18:02:54,093 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:02:54,093 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2084711141] [2020-10-14 18:02:54,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:02:54,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:02:54,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:02:54,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:02:59,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:02:59,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-14 18:02:59,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:02:59,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 18:02:59,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:02:59,130 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:02:59,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 60 [2020-10-14 18:02:59,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:02:59,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-14 18:02:59,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:03:01,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:03:01,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:03:01,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:03:01,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:03:01,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:03:01,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:03:01,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:03:01,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:03:01,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:03:01,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:03:01,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:03:01,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:03:01,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:03:01,192 INFO L134 CoverageAnalysis]: Checked inductivity of 3364 backedges. 0 proven. 3364 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 18:03:01,192 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2084711141] [2020-10-14 18:03:01,192 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:03:01,193 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62] total 62 [2020-10-14 18:03:01,193 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923606063] [2020-10-14 18:03:01,193 INFO L459 AbstractCegarLoop]: Interpolant automaton has 62 states [2020-10-14 18:03:01,193 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:03:01,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2020-10-14 18:03:01,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1832, Invalid=1950, Unknown=0, NotChecked=0, Total=3782 [2020-10-14 18:03:01,194 INFO L87 Difference]: Start difference. First operand 138 states and 141 transitions. Second operand 62 states. [2020-10-14 18:03:01,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:03:01,660 INFO L93 Difference]: Finished difference Result 156 states and 162 transitions. [2020-10-14 18:03:01,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2020-10-14 18:03:01,661 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 131 [2020-10-14 18:03:01,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:03:01,662 INFO L225 Difference]: With dead ends: 156 [2020-10-14 18:03:01,662 INFO L226 Difference]: Without dead ends: 141 [2020-10-14 18:03:01,663 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1832, Invalid=1950, Unknown=0, NotChecked=0, Total=3782 [2020-10-14 18:03:01,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-10-14 18:03:01,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 140. [2020-10-14 18:03:01,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-14 18:03:01,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 143 transitions. [2020-10-14 18:03:01,667 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 143 transitions. Word has length 131 [2020-10-14 18:03:01,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:03:01,668 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 143 transitions. [2020-10-14 18:03:01,668 INFO L480 AbstractCegarLoop]: Interpolant automaton has 62 states. [2020-10-14 18:03:01,668 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 143 transitions. [2020-10-14 18:03:01,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-14 18:03:01,669 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:03:01,669 INFO L422 BasicCegarLoop]: trace histogram [59, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:03:01,669 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2020-10-14 18:03:01,669 INFO L427 AbstractCegarLoop]: === Iteration 61 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:03:01,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:03:01,670 INFO L82 PathProgramCache]: Analyzing trace with hash -1972920873, now seen corresponding path program 59 times [2020-10-14 18:03:01,670 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:03:01,670 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1794192834] [2020-10-14 18:03:01,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:03:01,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:03:01,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:03:01,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:03:06,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:03:06,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-14 18:03:06,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:03:06,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 18:03:06,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:03:06,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:03:06,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 61 [2020-10-14 18:03:06,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:03:06,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-14 18:03:06,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:03:08,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:03:08,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:03:08,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:03:08,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:03:08,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:03:08,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:03:08,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:03:08,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:03:08,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:03:08,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:03:08,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:03:08,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:03:08,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:03:08,833 INFO L134 CoverageAnalysis]: Checked inductivity of 3481 backedges. 0 proven. 3481 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 18:03:08,834 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1794192834] [2020-10-14 18:03:08,834 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:03:08,834 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63] total 63 [2020-10-14 18:03:08,834 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843277967] [2020-10-14 18:03:08,834 INFO L459 AbstractCegarLoop]: Interpolant automaton has 63 states [2020-10-14 18:03:08,834 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:03:08,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2020-10-14 18:03:08,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1893, Invalid=2013, Unknown=0, NotChecked=0, Total=3906 [2020-10-14 18:03:08,835 INFO L87 Difference]: Start difference. First operand 140 states and 143 transitions. Second operand 63 states. [2020-10-14 18:03:09,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:03:09,310 INFO L93 Difference]: Finished difference Result 158 states and 164 transitions. [2020-10-14 18:03:09,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2020-10-14 18:03:09,311 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 133 [2020-10-14 18:03:09,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:03:09,312 INFO L225 Difference]: With dead ends: 158 [2020-10-14 18:03:09,313 INFO L226 Difference]: Without dead ends: 143 [2020-10-14 18:03:09,313 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1893, Invalid=2013, Unknown=0, NotChecked=0, Total=3906 [2020-10-14 18:03:09,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-10-14 18:03:09,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 142. [2020-10-14 18:03:09,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-14 18:03:09,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 145 transitions. [2020-10-14 18:03:09,317 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 145 transitions. Word has length 133 [2020-10-14 18:03:09,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:03:09,317 INFO L479 AbstractCegarLoop]: Abstraction has 142 states and 145 transitions. [2020-10-14 18:03:09,317 INFO L480 AbstractCegarLoop]: Interpolant automaton has 63 states. [2020-10-14 18:03:09,318 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 145 transitions. [2020-10-14 18:03:09,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-10-14 18:03:09,318 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:03:09,319 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:03:09,319 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2020-10-14 18:03:09,319 INFO L427 AbstractCegarLoop]: === Iteration 62 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:03:09,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:03:09,319 INFO L82 PathProgramCache]: Analyzing trace with hash -1975068683, now seen corresponding path program 60 times [2020-10-14 18:03:09,319 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:03:09,319 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [231668034] [2020-10-14 18:03:09,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:03:09,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:03:09,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:03:09,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:03:14,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:03:14,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-14 18:03:14,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:03:14,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-14 18:03:14,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:03:14,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:03:14,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 62 [2020-10-14 18:03:14,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:03:14,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-14 18:03:14,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:03:16,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:03:16,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:03:16,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:03:16,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:03:16,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:03:16,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:03:16,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:03:16,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:03:16,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:03:16,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:03:16,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:03:16,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:03:16,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:03:16,516 INFO L134 CoverageAnalysis]: Checked inductivity of 3600 backedges. 0 proven. 3600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 18:03:16,517 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [231668034] [2020-10-14 18:03:16,517 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:03:16,517 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64] total 64 [2020-10-14 18:03:16,517 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868899162] [2020-10-14 18:03:16,517 INFO L459 AbstractCegarLoop]: Interpolant automaton has 64 states [2020-10-14 18:03:16,517 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:03:16,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2020-10-14 18:03:16,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1955, Invalid=2077, Unknown=0, NotChecked=0, Total=4032 [2020-10-14 18:03:16,518 INFO L87 Difference]: Start difference. First operand 142 states and 145 transitions. Second operand 64 states. [2020-10-14 18:03:16,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:03:16,982 INFO L93 Difference]: Finished difference Result 160 states and 166 transitions. [2020-10-14 18:03:16,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2020-10-14 18:03:16,982 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 135 [2020-10-14 18:03:16,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:03:16,984 INFO L225 Difference]: With dead ends: 160 [2020-10-14 18:03:16,984 INFO L226 Difference]: Without dead ends: 145 [2020-10-14 18:03:16,984 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1955, Invalid=2077, Unknown=0, NotChecked=0, Total=4032 [2020-10-14 18:03:16,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-10-14 18:03:16,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 144. [2020-10-14 18:03:16,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-10-14 18:03:16,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 147 transitions. [2020-10-14 18:03:16,989 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 147 transitions. Word has length 135 [2020-10-14 18:03:16,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:03:16,989 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 147 transitions. [2020-10-14 18:03:16,989 INFO L480 AbstractCegarLoop]: Interpolant automaton has 64 states. [2020-10-14 18:03:16,989 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 147 transitions. [2020-10-14 18:03:16,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-10-14 18:03:16,990 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:03:16,990 INFO L422 BasicCegarLoop]: trace histogram [61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:03:16,990 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2020-10-14 18:03:16,990 INFO L427 AbstractCegarLoop]: === Iteration 63 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:03:16,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:03:16,991 INFO L82 PathProgramCache]: Analyzing trace with hash 255853203, now seen corresponding path program 61 times [2020-10-14 18:03:16,991 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:03:16,991 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [70289388] [2020-10-14 18:03:16,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:03:17,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:03:17,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:03:20,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:03:22,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:03:22,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-14 18:03:22,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:03:22,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-14 18:03:22,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:03:22,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:03:22,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 63 [2020-10-14 18:03:22,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:03:22,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-14 18:03:22,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:03:24,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:03:24,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:03:24,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:03:24,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:03:24,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:03:24,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:03:24,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:03:24,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:03:24,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:03:24,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:03:24,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:03:24,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:03:24,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:03:24,236 INFO L134 CoverageAnalysis]: Checked inductivity of 3721 backedges. 0 proven. 3721 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 18:03:24,237 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [70289388] [2020-10-14 18:03:24,237 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:03:24,237 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65] total 65 [2020-10-14 18:03:24,237 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206766323] [2020-10-14 18:03:24,237 INFO L459 AbstractCegarLoop]: Interpolant automaton has 65 states [2020-10-14 18:03:24,237 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:03:24,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2020-10-14 18:03:24,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2018, Invalid=2142, Unknown=0, NotChecked=0, Total=4160 [2020-10-14 18:03:24,238 INFO L87 Difference]: Start difference. First operand 144 states and 147 transitions. Second operand 65 states. [2020-10-14 18:03:24,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:03:24,721 INFO L93 Difference]: Finished difference Result 162 states and 168 transitions. [2020-10-14 18:03:24,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-14 18:03:24,722 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 137 [2020-10-14 18:03:24,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:03:24,723 INFO L225 Difference]: With dead ends: 162 [2020-10-14 18:03:24,724 INFO L226 Difference]: Without dead ends: 147 [2020-10-14 18:03:24,724 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=2018, Invalid=2142, Unknown=0, NotChecked=0, Total=4160 [2020-10-14 18:03:24,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-10-14 18:03:24,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 146. [2020-10-14 18:03:24,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-10-14 18:03:24,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 149 transitions. [2020-10-14 18:03:24,728 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 149 transitions. Word has length 137 [2020-10-14 18:03:24,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:03:24,728 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 149 transitions. [2020-10-14 18:03:24,729 INFO L480 AbstractCegarLoop]: Interpolant automaton has 65 states. [2020-10-14 18:03:24,729 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 149 transitions. [2020-10-14 18:03:24,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-14 18:03:24,729 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:03:24,729 INFO L422 BasicCegarLoop]: trace histogram [62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:03:24,730 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2020-10-14 18:03:24,730 INFO L427 AbstractCegarLoop]: === Iteration 64 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:03:24,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:03:24,730 INFO L82 PathProgramCache]: Analyzing trace with hash 983104945, now seen corresponding path program 62 times [2020-10-14 18:03:24,730 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:03:24,730 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1146134698] [2020-10-14 18:03:24,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:03:24,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:03:24,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:03:24,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:03:29,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:03:29,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-14 18:03:29,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:03:29,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5054 [2020-10-14 18:03:29,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:03:29,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:03:29,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 64 [2020-10-14 18:03:29,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:03:29,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-14 18:03:29,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:03:32,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:03:32,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:03:32,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:03:32,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:03:32,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:03:32,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:03:32,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:03:32,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:03:32,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:03:32,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:03:32,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:03:32,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:03:32,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:03:32,061 INFO L134 CoverageAnalysis]: Checked inductivity of 3844 backedges. 0 proven. 3844 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 18:03:32,061 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1146134698] [2020-10-14 18:03:32,061 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:03:32,061 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66] total 66 [2020-10-14 18:03:32,062 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31698893] [2020-10-14 18:03:32,062 INFO L459 AbstractCegarLoop]: Interpolant automaton has 66 states [2020-10-14 18:03:32,062 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:03:32,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2020-10-14 18:03:32,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2082, Invalid=2208, Unknown=0, NotChecked=0, Total=4290 [2020-10-14 18:03:32,063 INFO L87 Difference]: Start difference. First operand 146 states and 149 transitions. Second operand 66 states. [2020-10-14 18:03:32,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:03:32,597 INFO L93 Difference]: Finished difference Result 164 states and 170 transitions. [2020-10-14 18:03:32,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2020-10-14 18:03:32,597 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 139 [2020-10-14 18:03:32,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:03:32,599 INFO L225 Difference]: With dead ends: 164 [2020-10-14 18:03:32,599 INFO L226 Difference]: Without dead ends: 149 [2020-10-14 18:03:32,600 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=2082, Invalid=2208, Unknown=0, NotChecked=0, Total=4290 [2020-10-14 18:03:32,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-10-14 18:03:32,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 148. [2020-10-14 18:03:32,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-10-14 18:03:32,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 151 transitions. [2020-10-14 18:03:32,604 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 151 transitions. Word has length 139 [2020-10-14 18:03:32,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:03:32,605 INFO L479 AbstractCegarLoop]: Abstraction has 148 states and 151 transitions. [2020-10-14 18:03:32,605 INFO L480 AbstractCegarLoop]: Interpolant automaton has 66 states. [2020-10-14 18:03:32,605 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 151 transitions. [2020-10-14 18:03:32,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-10-14 18:03:32,606 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:03:32,606 INFO L422 BasicCegarLoop]: trace histogram [63, 63, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:03:32,606 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2020-10-14 18:03:32,606 INFO L427 AbstractCegarLoop]: === Iteration 65 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:03:32,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:03:32,607 INFO L82 PathProgramCache]: Analyzing trace with hash -207640241, now seen corresponding path program 63 times [2020-10-14 18:03:32,607 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:03:32,607 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [167416757] [2020-10-14 18:03:32,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:03:32,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:03:32,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:03:32,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:03:37,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:03:37,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-14 18:03:37,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:03:37,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 18:03:37,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:03:37,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:03:37,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 65 [2020-10-14 18:03:37,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:03:37,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-14 18:03:37,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:03:39,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:03:39,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:03:39,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:03:39,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:03:39,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:03:39,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:03:39,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:03:39,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:03:39,998 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:03:39,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:03:39,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:03:39,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:03:39,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:03:40,014 INFO L134 CoverageAnalysis]: Checked inductivity of 3969 backedges. 0 proven. 3969 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 18:03:40,014 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [167416757] [2020-10-14 18:03:40,014 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:03:40,015 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67] total 67 [2020-10-14 18:03:40,015 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138067461] [2020-10-14 18:03:40,015 INFO L459 AbstractCegarLoop]: Interpolant automaton has 67 states [2020-10-14 18:03:40,015 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:03:40,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2020-10-14 18:03:40,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2147, Invalid=2275, Unknown=0, NotChecked=0, Total=4422 [2020-10-14 18:03:40,016 INFO L87 Difference]: Start difference. First operand 148 states and 151 transitions. Second operand 67 states. [2020-10-14 18:03:40,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:03:40,351 INFO L93 Difference]: Finished difference Result 166 states and 172 transitions. [2020-10-14 18:03:40,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2020-10-14 18:03:40,352 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 141 [2020-10-14 18:03:40,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:03:40,353 INFO L225 Difference]: With dead ends: 166 [2020-10-14 18:03:40,353 INFO L226 Difference]: Without dead ends: 151 [2020-10-14 18:03:40,354 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=2147, Invalid=2275, Unknown=0, NotChecked=0, Total=4422 [2020-10-14 18:03:40,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-10-14 18:03:40,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 150. [2020-10-14 18:03:40,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-10-14 18:03:40,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 153 transitions. [2020-10-14 18:03:40,359 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 153 transitions. Word has length 141 [2020-10-14 18:03:40,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:03:40,359 INFO L479 AbstractCegarLoop]: Abstraction has 150 states and 153 transitions. [2020-10-14 18:03:40,359 INFO L480 AbstractCegarLoop]: Interpolant automaton has 67 states. [2020-10-14 18:03:40,359 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 153 transitions. [2020-10-14 18:03:40,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-10-14 18:03:40,360 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:03:40,360 INFO L422 BasicCegarLoop]: trace histogram [64, 64, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:03:40,360 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2020-10-14 18:03:40,360 INFO L427 AbstractCegarLoop]: === Iteration 66 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:03:40,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:03:40,361 INFO L82 PathProgramCache]: Analyzing trace with hash -2052463251, now seen corresponding path program 64 times [2020-10-14 18:03:40,361 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:03:40,361 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1305702500] [2020-10-14 18:03:40,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:03:40,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:03:40,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:03:40,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:03:45,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:03:45,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-14 18:03:45,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:03:45,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-14 18:03:45,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:03:45,417 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:03:45,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 66 [2020-10-14 18:03:45,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:03:45,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-14 18:03:45,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:03:47,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:03:47,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:03:47,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:03:47,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:03:47,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:03:47,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:03:47,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:03:47,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:03:47,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:03:47,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:03:47,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:03:47,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:03:47,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:03:47,941 INFO L134 CoverageAnalysis]: Checked inductivity of 4096 backedges. 0 proven. 4096 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 18:03:47,942 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1305702500] [2020-10-14 18:03:47,942 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:03:47,942 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [68] total 68 [2020-10-14 18:03:47,942 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007747962] [2020-10-14 18:03:47,942 INFO L459 AbstractCegarLoop]: Interpolant automaton has 68 states [2020-10-14 18:03:47,942 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:03:47,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2020-10-14 18:03:47,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2213, Invalid=2343, Unknown=0, NotChecked=0, Total=4556 [2020-10-14 18:03:47,943 INFO L87 Difference]: Start difference. First operand 150 states and 153 transitions. Second operand 68 states. [2020-10-14 18:03:48,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:03:48,391 INFO L93 Difference]: Finished difference Result 168 states and 174 transitions. [2020-10-14 18:03:48,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2020-10-14 18:03:48,392 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 143 [2020-10-14 18:03:48,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:03:48,393 INFO L225 Difference]: With dead ends: 168 [2020-10-14 18:03:48,393 INFO L226 Difference]: Without dead ends: 153 [2020-10-14 18:03:48,394 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=2213, Invalid=2343, Unknown=0, NotChecked=0, Total=4556 [2020-10-14 18:03:48,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-10-14 18:03:48,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 152. [2020-10-14 18:03:48,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-10-14 18:03:48,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 155 transitions. [2020-10-14 18:03:48,398 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 155 transitions. Word has length 143 [2020-10-14 18:03:48,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:03:48,399 INFO L479 AbstractCegarLoop]: Abstraction has 152 states and 155 transitions. [2020-10-14 18:03:48,399 INFO L480 AbstractCegarLoop]: Interpolant automaton has 68 states. [2020-10-14 18:03:48,399 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 155 transitions. [2020-10-14 18:03:48,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-10-14 18:03:48,400 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:03:48,400 INFO L422 BasicCegarLoop]: trace histogram [65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:03:48,400 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2020-10-14 18:03:48,400 INFO L427 AbstractCegarLoop]: === Iteration 67 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:03:48,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:03:48,401 INFO L82 PathProgramCache]: Analyzing trace with hash -1105882613, now seen corresponding path program 65 times [2020-10-14 18:03:48,401 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:03:48,401 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [743387050] [2020-10-14 18:03:48,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:03:48,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:03:48,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:03:48,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:03:53,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:03:53,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-14 18:03:53,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:03:53,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 18:03:53,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:03:53,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:03:53,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 67 [2020-10-14 18:03:53,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:03:53,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-14 18:03:53,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0