/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 SingleStatement --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=0.3 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-invgen/apache-get-tag.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 12:32:07,949 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 12:32:07,952 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 12:32:07,980 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 12:32:07,980 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 12:32:07,982 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 12:32:07,983 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 12:32:07,985 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 12:32:07,987 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 12:32:07,988 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 12:32:07,989 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 12:32:07,991 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 12:32:07,991 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 12:32:07,992 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 12:32:07,994 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 12:32:07,995 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 12:32:07,996 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 12:32:07,997 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 12:32:07,999 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 12:32:08,001 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 12:32:08,005 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 12:32:08,007 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 12:32:08,011 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 12:32:08,013 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 12:32:08,018 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 12:32:08,020 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 12:32:08,020 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 12:32:08,021 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 12:32:08,024 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 12:32:08,025 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 12:32:08,026 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 12:32:08,026 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 12:32:08,027 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 12:32:08,030 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 12:32:08,032 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 12:32:08,032 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 12:32:08,033 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 12:32:08,033 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 12:32:08,034 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 12:32:08,045 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 12:32:08,046 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 12:32:08,049 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 [2020-09-25 12:32:08,105 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 12:32:08,105 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 12:32:08,107 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 12:32:08,107 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 12:32:08,107 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 12:32:08,107 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 12:32:08,108 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 12:32:08,108 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 12:32:08,108 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 12:32:08,108 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 12:32:08,108 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 12:32:08,108 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 12:32:08,112 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 12:32:08,112 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 12:32:08,112 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 12:32:08,112 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 12:32:08,113 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 12:32:08,113 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 12:32:08,113 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 12:32:08,113 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 12:32:08,114 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 12:32:08,114 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:32:08,114 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 12:32:08,114 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 12:32:08,115 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 12:32:08,115 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 12:32:08,115 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 12:32:08,115 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 12:32:08,115 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 12:32:08,116 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 -> SingleStatement 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=0.3;log-additional-information=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=0.3;log-additional-information=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=0.3;log-additional-information=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=0.3;log-additional-information=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=0.3;log-additional-information=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=0.3;log-additional-information=true; [2020-09-25 12:32:08,618 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 12:32:08,647 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 12:32:08,652 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 12:32:08,654 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 12:32:08,654 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 12:32:08,656 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/apache-get-tag.i [2020-09-25 12:32:08,754 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ef538bfec/c604c0d38cbe472ab48f55e046aec207/FLAG51c1f2b20 [2020-09-25 12:32:09,319 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 12:32:09,320 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-invgen/apache-get-tag.i [2020-09-25 12:32:09,329 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ef538bfec/c604c0d38cbe472ab48f55e046aec207/FLAG51c1f2b20 [2020-09-25 12:32:09,651 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ef538bfec/c604c0d38cbe472ab48f55e046aec207 [2020-09-25 12:32:09,664 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 12:32:09,672 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 12:32:09,673 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 12:32:09,673 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 12:32:09,678 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 12:32:09,679 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:32:09" (1/1) ... [2020-09-25 12:32:09,683 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4cd12457 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:32:09, skipping insertion in model container [2020-09-25 12:32:09,683 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:32:09" (1/1) ... [2020-09-25 12:32:09,693 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 12:32:09,721 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 12:32:09,952 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:32:09,958 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 12:32:09,987 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:32:10,013 INFO L208 MainTranslator]: Completed translation [2020-09-25 12:32:10,014 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:32:10 WrapperNode [2020-09-25 12:32:10,014 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 12:32:10,015 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 12:32:10,015 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 12:32:10,015 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 12:32:10,033 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:32:10" (1/1) ... [2020-09-25 12:32:10,034 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:32:10" (1/1) ... [2020-09-25 12:32:10,041 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:32:10" (1/1) ... [2020-09-25 12:32:10,042 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:32:10" (1/1) ... [2020-09-25 12:32:10,048 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:32:10" (1/1) ... [2020-09-25 12:32:10,173 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:32:10" (1/1) ... [2020-09-25 12:32:10,175 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:32:10" (1/1) ... [2020-09-25 12:32:10,177 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 12:32:10,178 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 12:32:10,178 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 12:32:10,178 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 12:32:10,179 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:32:10" (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 [2020-09-25 12:32:10,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 12:32:10,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 12:32:10,272 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 12:32:10,272 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 12:32:10,272 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 12:32:10,272 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 12:32:10,273 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 12:32:10,273 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 12:32:10,273 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 12:32:10,273 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 12:32:10,273 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 12:32:10,274 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 12:32:10,274 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 12:32:10,617 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 12:32:10,618 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-25 12:32:10,624 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:32:10 BoogieIcfgContainer [2020-09-25 12:32:10,624 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 12:32:10,625 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 12:32:10,626 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 12:32:10,630 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 12:32:10,630 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:32:09" (1/3) ... [2020-09-25 12:32:10,631 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d86ea4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:32:10, skipping insertion in model container [2020-09-25 12:32:10,632 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:32:10" (2/3) ... [2020-09-25 12:32:10,632 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d86ea4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:32:10, skipping insertion in model container [2020-09-25 12:32:10,632 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:32:10" (3/3) ... [2020-09-25 12:32:10,635 INFO L109 eAbstractionObserver]: Analyzing ICFG apache-get-tag.i [2020-09-25 12:32:10,648 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 12:32:10,659 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 12:32:10,684 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 12:32:10,733 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 12:32:10,734 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 12:32:10,734 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 12:32:10,734 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 12:32:10,734 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 12:32:10,735 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 12:32:10,735 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 12:32:10,735 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 12:32:10,778 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2020-09-25 12:32:10,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-25 12:32:10,787 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:32:10,788 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:32:10,789 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:32:10,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:32:10,796 INFO L82 PathProgramCache]: Analyzing trace with hash -537390573, now seen corresponding path program 1 times [2020-09-25 12:32:10,807 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:32:10,808 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1690950604] [2020-09-25 12:32:10,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:32:10,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:10,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:11,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:11,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:11,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-25 12:32:11,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:32:11,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-09-25 12:32:11,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:11,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:11,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:32:11,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 12:32:11,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 12:32:11,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-09-25 12:32:11,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:32:11,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:11,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:11,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:11,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:32:11,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:32:11,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 12:32:11,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:11,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:11,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:32:11,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:32:11,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:32:11,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:32:11,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:32:11,262 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1690950604] [2020-09-25 12:32:11,264 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:32:11,265 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 12:32:11,266 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736152012] [2020-09-25 12:32:11,273 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:32:11,273 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:32:11,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:32:11,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:32:11,296 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 5 states. [2020-09-25 12:32:11,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:32:11,530 INFO L93 Difference]: Finished difference Result 157 states and 242 transitions. [2020-09-25 12:32:11,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 12:32:11,532 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-09-25 12:32:11,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:32:11,547 INFO L225 Difference]: With dead ends: 157 [2020-09-25 12:32:11,547 INFO L226 Difference]: Without dead ends: 89 [2020-09-25 12:32:11,554 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 12:32:11,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-09-25 12:32:11,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 82. [2020-09-25 12:32:11,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-09-25 12:32:11,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 104 transitions. [2020-09-25 12:32:11,623 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 104 transitions. Word has length 19 [2020-09-25 12:32:11,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:32:11,624 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 104 transitions. [2020-09-25 12:32:11,624 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:32:11,624 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 104 transitions. [2020-09-25 12:32:11,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-25 12:32:11,626 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:32:11,627 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:32:11,627 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 12:32:11,627 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:32:11,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:32:11,628 INFO L82 PathProgramCache]: Analyzing trace with hash -1383579147, now seen corresponding path program 1 times [2020-09-25 12:32:11,628 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:32:11,629 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [433403205] [2020-09-25 12:32:11,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:32:11,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:11,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:11,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:12,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:12,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 12:32:12,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:32:12,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 363 [2020-09-25 12:32:12,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:12,008 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:12,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:32:12,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 12:32:12,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 12:32:12,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:32:12,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:32:12,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:12,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:12,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:12,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:32:12,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:32:12,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 12:32:12,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:12,088 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:12,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:32:12,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:32:12,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:32:12,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 12:32:12,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-25 12:32:12,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:12,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:12,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:12,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 12:32:12,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:32:12,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 12:32:12,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:12,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:12,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:32:12,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:32:12,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:32:12,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:32:12,120 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:32:12,120 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [433403205] [2020-09-25 12:32:12,121 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:32:12,121 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 12:32:12,122 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843251077] [2020-09-25 12:32:12,124 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 12:32:12,124 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:32:12,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 12:32:12,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 12:32:12,125 INFO L87 Difference]: Start difference. First operand 82 states and 104 transitions. Second operand 7 states. [2020-09-25 12:32:12,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:32:12,327 INFO L93 Difference]: Finished difference Result 94 states and 117 transitions. [2020-09-25 12:32:12,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 12:32:12,328 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2020-09-25 12:32:12,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:32:12,330 INFO L225 Difference]: With dead ends: 94 [2020-09-25 12:32:12,330 INFO L226 Difference]: Without dead ends: 88 [2020-09-25 12:32:12,332 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-25 12:32:12,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-09-25 12:32:12,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 84. [2020-09-25 12:32:12,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-09-25 12:32:12,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 102 transitions. [2020-09-25 12:32:12,346 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 102 transitions. Word has length 25 [2020-09-25 12:32:12,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:32:12,347 INFO L479 AbstractCegarLoop]: Abstraction has 84 states and 102 transitions. [2020-09-25 12:32:12,347 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 12:32:12,347 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 102 transitions. [2020-09-25 12:32:12,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-25 12:32:12,349 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:32:12,349 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:32:12,349 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 12:32:12,349 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:32:12,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:32:12,350 INFO L82 PathProgramCache]: Analyzing trace with hash -1469174755, now seen corresponding path program 1 times [2020-09-25 12:32:12,350 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:32:12,350 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1391138921] [2020-09-25 12:32:12,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:32:12,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:12,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:12,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:12,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:12,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:12,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:13,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:13,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 12:32:13,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 12:32:13,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1508 [2020-09-25 12:32:13,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:13,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:13,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:32:13,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 12:32:13,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 12:32:13,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:32:13,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:32:13,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:13,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:13,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:13,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:32:13,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:32:13,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 12:32:13,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:13,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:13,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:32:13,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:32:13,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:32:13,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 12:32:13,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-25 12:32:13,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:13,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:13,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:13,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:13,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 12:32:13,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:32:13,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 12:32:13,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:13,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:13,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:32:13,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:32:13,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:32:13,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:32:13,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 12:32:13,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:13,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:14,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:14,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 12:32:14,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:32:14,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 12:32:14,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:14,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:14,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:32:14,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:32:14,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:32:14,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:32:14,016 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 12:32:14,017 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1391138921] [2020-09-25 12:32:14,017 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:32:14,018 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 12:32:14,019 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810240709] [2020-09-25 12:32:14,021 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 12:32:14,022 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:32:14,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 12:32:14,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 12:32:14,023 INFO L87 Difference]: Start difference. First operand 84 states and 102 transitions. Second operand 7 states. [2020-09-25 12:32:14,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:32:14,207 INFO L93 Difference]: Finished difference Result 94 states and 111 transitions. [2020-09-25 12:32:14,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 12:32:14,208 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2020-09-25 12:32:14,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:32:14,209 INFO L225 Difference]: With dead ends: 94 [2020-09-25 12:32:14,210 INFO L226 Difference]: Without dead ends: 91 [2020-09-25 12:32:14,211 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-09-25 12:32:14,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-09-25 12:32:14,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 87. [2020-09-25 12:32:14,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-09-25 12:32:14,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 103 transitions. [2020-09-25 12:32:14,223 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 103 transitions. Word has length 38 [2020-09-25 12:32:14,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:32:14,223 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 103 transitions. [2020-09-25 12:32:14,223 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 12:32:14,223 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 103 transitions. [2020-09-25 12:32:14,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-25 12:32:14,225 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:32:14,225 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:32:14,226 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 12:32:14,226 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:32:14,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:32:14,226 INFO L82 PathProgramCache]: Analyzing trace with hash -1945975399, now seen corresponding path program 1 times [2020-09-25 12:32:14,227 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:32:14,227 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1294469680] [2020-09-25 12:32:14,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:32:14,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:14,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:14,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:14,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:14,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:14,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:15,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:15,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 12:32:15,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 12:32:15,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1321 [2020-09-25 12:32:15,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:15,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:15,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:32:15,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 12:32:15,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 12:32:15,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:32:15,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:32:15,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:15,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:15,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:15,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:32:15,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:32:15,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 12:32:15,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:15,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:15,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:32:15,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:32:15,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:32:15,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:32:15,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-25 12:32:15,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:15,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:15,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:15,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:15,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 12:32:15,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:32:15,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 12:32:15,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:15,630 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:15,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:32:15,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:32:15,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:32:15,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:32:15,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 12:32:15,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:15,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:15,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:15,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 12:32:15,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:32:15,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 12:32:15,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:15,647 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:15,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:32:15,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:32:15,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:32:15,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:32:15,652 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 12:32:15,653 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1294469680] [2020-09-25 12:32:15,653 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:32:15,653 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 12:32:15,653 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964646833] [2020-09-25 12:32:15,654 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 12:32:15,654 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:32:15,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 12:32:15,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 12:32:15,655 INFO L87 Difference]: Start difference. First operand 87 states and 103 transitions. Second operand 7 states. [2020-09-25 12:32:15,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:32:15,819 INFO L93 Difference]: Finished difference Result 123 states and 147 transitions. [2020-09-25 12:32:15,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 12:32:15,820 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2020-09-25 12:32:15,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:32:15,822 INFO L225 Difference]: With dead ends: 123 [2020-09-25 12:32:15,822 INFO L226 Difference]: Without dead ends: 120 [2020-09-25 12:32:15,823 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-09-25 12:32:15,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-09-25 12:32:15,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 111. [2020-09-25 12:32:15,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-09-25 12:32:15,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 132 transitions. [2020-09-25 12:32:15,836 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 132 transitions. Word has length 38 [2020-09-25 12:32:15,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:32:15,837 INFO L479 AbstractCegarLoop]: Abstraction has 111 states and 132 transitions. [2020-09-25 12:32:15,837 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 12:32:15,837 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 132 transitions. [2020-09-25 12:32:15,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-25 12:32:15,839 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:32:15,840 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:32:15,840 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 12:32:15,840 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:32:15,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:32:15,841 INFO L82 PathProgramCache]: Analyzing trace with hash 1177695863, now seen corresponding path program 1 times [2020-09-25 12:32:15,841 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:32:15,841 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1138241289] [2020-09-25 12:32:15,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:32:15,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:15,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:15,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:16,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:16,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 12:32:16,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:32:16,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 739 [2020-09-25 12:32:16,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:16,594 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:16,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 12:32:16,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 12:32:16,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 12:32:16,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:32:16,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:32:16,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:16,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:16,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:16,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:32:16,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:32:16,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 12:32:16,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:16,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:16,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:32:16,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:32:16,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:32:16,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:32:16,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-25 12:32:16,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:16,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:16,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:16,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 12:32:16,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:32:16,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 12:32:16,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:16,715 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:16,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:32:16,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:32:16,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:32:16,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:32:16,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 12:32:16,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:16,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:16,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:16,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 12:32:16,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:32:16,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 12:32:16,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:16,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:16,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:32:16,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:32:16,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:32:16,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:32:16,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-25 12:32:16,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:16,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:16,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:16,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 12:32:16,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:32:16,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 12:32:16,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:16,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:16,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:32:16,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:32:16,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:32:16,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:32:16,792 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-25 12:32:16,793 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1138241289] [2020-09-25 12:32:16,793 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:32:16,793 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 12:32:16,794 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008587626] [2020-09-25 12:32:16,794 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 12:32:16,795 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:32:16,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 12:32:16,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-09-25 12:32:16,795 INFO L87 Difference]: Start difference. First operand 111 states and 132 transitions. Second operand 10 states. [2020-09-25 12:32:17,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:32:17,159 INFO L93 Difference]: Finished difference Result 117 states and 137 transitions. [2020-09-25 12:32:17,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 12:32:17,160 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 46 [2020-09-25 12:32:17,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:32:17,165 INFO L225 Difference]: With dead ends: 117 [2020-09-25 12:32:17,165 INFO L226 Difference]: Without dead ends: 115 [2020-09-25 12:32:17,166 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2020-09-25 12:32:17,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-09-25 12:32:17,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2020-09-25 12:32:17,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-09-25 12:32:17,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 135 transitions. [2020-09-25 12:32:17,179 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 135 transitions. Word has length 46 [2020-09-25 12:32:17,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:32:17,180 INFO L479 AbstractCegarLoop]: Abstraction has 115 states and 135 transitions. [2020-09-25 12:32:17,180 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 12:32:17,180 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 135 transitions. [2020-09-25 12:32:17,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-09-25 12:32:17,182 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:32:17,183 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:32:17,183 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 12:32:17,183 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:32:17,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:32:17,184 INFO L82 PathProgramCache]: Analyzing trace with hash 1826770767, now seen corresponding path program 1 times [2020-09-25 12:32:17,184 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:32:17,184 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [218488730] [2020-09-25 12:32:17,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:32:17,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:17,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:17,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:18,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:18,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-25 12:32:18,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:32:18,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 994 [2020-09-25 12:32:18,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:18,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:18,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 12:32:18,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 12:32:18,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-25 12:32:18,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:32:18,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:32:18,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:18,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:18,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:18,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:32:18,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:32:18,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 12:32:18,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:18,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:18,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:32:18,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:32:18,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:32:18,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:32:18,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-25 12:32:18,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:18,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:18,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:18,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 12:32:18,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:32:18,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 12:32:18,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:18,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:18,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:32:18,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:32:18,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:32:18,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:32:18,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 12:32:18,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:18,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:18,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:18,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 12:32:18,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:32:18,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 12:32:18,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:18,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:18,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:32:18,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:32:18,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:32:18,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:32:18,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-25 12:32:18,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:18,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:18,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:18,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 12:32:18,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:32:18,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 12:32:18,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:18,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:18,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:32:18,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:32:18,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:32:18,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:32:18,465 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-25 12:32:18,466 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [218488730] [2020-09-25 12:32:18,467 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:32:18,467 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-25 12:32:18,467 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699211642] [2020-09-25 12:32:18,468 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 12:32:18,468 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:32:18,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 12:32:18,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-09-25 12:32:18,469 INFO L87 Difference]: Start difference. First operand 115 states and 135 transitions. Second operand 9 states. [2020-09-25 12:32:18,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:32:18,934 INFO L93 Difference]: Finished difference Result 130 states and 151 transitions. [2020-09-25 12:32:18,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 12:32:18,934 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 49 [2020-09-25 12:32:18,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:32:18,936 INFO L225 Difference]: With dead ends: 130 [2020-09-25 12:32:18,936 INFO L226 Difference]: Without dead ends: 123 [2020-09-25 12:32:18,939 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-09-25 12:32:18,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-09-25 12:32:18,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 117. [2020-09-25 12:32:18,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-09-25 12:32:18,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 134 transitions. [2020-09-25 12:32:18,964 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 134 transitions. Word has length 49 [2020-09-25 12:32:18,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:32:18,964 INFO L479 AbstractCegarLoop]: Abstraction has 117 states and 134 transitions. [2020-09-25 12:32:18,964 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 12:32:18,964 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 134 transitions. [2020-09-25 12:32:18,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-25 12:32:18,973 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:32:18,973 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:32:18,973 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 12:32:18,974 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:32:18,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:32:18,974 INFO L82 PathProgramCache]: Analyzing trace with hash 1519048418, now seen corresponding path program 1 times [2020-09-25 12:32:18,974 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:32:18,975 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1493789271] [2020-09-25 12:32:18,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:32:18,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:19,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:19,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:19,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:20,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:20,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 12:32:20,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 12:32:20,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1395 [2020-09-25 12:32:20,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:20,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:20,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:32:20,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 12:32:20,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-25 12:32:20,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:32:20,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:32:20,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:20,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:20,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:20,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:32:20,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:32:20,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 12:32:20,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:20,463 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:20,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:32:20,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:32:20,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:32:20,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:32:20,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-25 12:32:20,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:20,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:20,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:20,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:20,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 12:32:20,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:32:20,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 12:32:20,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:20,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:20,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:32:20,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:32:20,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:32:20,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:32:20,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 12:32:20,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:20,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:20,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:20,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 12:32:20,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:32:20,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 12:32:20,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:20,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:20,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:32:20,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:32:20,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:32:20,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:32:20,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-25 12:32:20,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:20,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:20,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:20,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 12:32:20,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:32:20,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 12:32:20,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:20,522 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:20,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:32:20,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:32:20,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:32:20,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:32:20,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 12:32:20,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:20,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:20,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:20,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 12:32:20,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:32:20,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 12:32:20,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:20,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:20,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:32:20,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:32:20,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:32:20,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:32:20,547 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-09-25 12:32:20,547 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1493789271] [2020-09-25 12:32:20,548 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:32:20,548 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-25 12:32:20,549 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610872860] [2020-09-25 12:32:20,550 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 12:32:20,551 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:32:20,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 12:32:20,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-09-25 12:32:20,552 INFO L87 Difference]: Start difference. First operand 117 states and 134 transitions. Second operand 9 states. [2020-09-25 12:32:20,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:32:20,788 INFO L93 Difference]: Finished difference Result 135 states and 153 transitions. [2020-09-25 12:32:20,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 12:32:20,788 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 58 [2020-09-25 12:32:20,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:32:20,791 INFO L225 Difference]: With dead ends: 135 [2020-09-25 12:32:20,791 INFO L226 Difference]: Without dead ends: 133 [2020-09-25 12:32:20,792 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2020-09-25 12:32:20,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-09-25 12:32:20,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 126. [2020-09-25 12:32:20,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-09-25 12:32:20,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 143 transitions. [2020-09-25 12:32:20,807 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 143 transitions. Word has length 58 [2020-09-25 12:32:20,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:32:20,807 INFO L479 AbstractCegarLoop]: Abstraction has 126 states and 143 transitions. [2020-09-25 12:32:20,807 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 12:32:20,808 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 143 transitions. [2020-09-25 12:32:20,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-09-25 12:32:20,809 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:32:20,809 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:32:20,809 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 12:32:20,810 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:32:20,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:32:20,815 INFO L82 PathProgramCache]: Analyzing trace with hash 1733407875, now seen corresponding path program 1 times [2020-09-25 12:32:20,815 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:32:20,816 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [460253731] [2020-09-25 12:32:20,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:32:20,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:20,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:20,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:20,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:22,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:22,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 12:32:22,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 12:32:22,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1311 [2020-09-25 12:32:22,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:22,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:22,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:32:22,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 12:32:22,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-09-25 12:32:22,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:32:22,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:32:22,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:22,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:22,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:22,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:32:22,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:32:22,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:32:22,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:22,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:22,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:32:22,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:32:22,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:32:22,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:32:22,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-25 12:32:22,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:22,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:22,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:22,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:22,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 12:32:22,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:32:22,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 12:32:22,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:22,236 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:22,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:32:22,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:32:22,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:32:22,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:32:22,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 12:32:22,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:22,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:22,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:22,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 12:32:22,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:32:22,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 12:32:22,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:22,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:22,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:32:22,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:32:22,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:32:22,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:32:22,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-25 12:32:22,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:22,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:22,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:22,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 12:32:22,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:32:22,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 12:32:22,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:22,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:22,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:32:22,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:32:22,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:32:22,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:32:22,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-25 12:32:22,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:22,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:22,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:22,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 12:32:22,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:32:22,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 12:32:22,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:22,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:22,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:32:22,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:32:22,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:32:22,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:32:22,290 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-09-25 12:32:22,291 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [460253731] [2020-09-25 12:32:22,291 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:32:22,291 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-25 12:32:22,291 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73811318] [2020-09-25 12:32:22,292 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 12:32:22,292 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:32:22,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 12:32:22,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-09-25 12:32:22,293 INFO L87 Difference]: Start difference. First operand 126 states and 143 transitions. Second operand 9 states. [2020-09-25 12:32:22,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:32:22,527 INFO L93 Difference]: Finished difference Result 158 states and 182 transitions. [2020-09-25 12:32:22,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 12:32:22,528 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 62 [2020-09-25 12:32:22,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:32:22,529 INFO L225 Difference]: With dead ends: 158 [2020-09-25 12:32:22,530 INFO L226 Difference]: Without dead ends: 156 [2020-09-25 12:32:22,530 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2020-09-25 12:32:22,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-09-25 12:32:22,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 147. [2020-09-25 12:32:22,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-09-25 12:32:22,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 169 transitions. [2020-09-25 12:32:22,542 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 169 transitions. Word has length 62 [2020-09-25 12:32:22,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:32:22,543 INFO L479 AbstractCegarLoop]: Abstraction has 147 states and 169 transitions. [2020-09-25 12:32:22,543 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 12:32:22,543 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 169 transitions. [2020-09-25 12:32:22,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-09-25 12:32:22,544 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:32:22,545 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:32:22,545 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 12:32:22,545 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:32:22,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:32:22,546 INFO L82 PathProgramCache]: Analyzing trace with hash 1967257859, now seen corresponding path program 1 times [2020-09-25 12:32:22,546 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:32:22,546 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1446833791] [2020-09-25 12:32:22,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:32:22,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:22,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:22,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:22,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:27,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:27,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-25 12:32:27,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 12:32:27,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 12:32:27,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:27,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:27,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 12:32:27,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 12:32:27,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-09-25 12:32:27,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:32:27,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:32:27,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:27,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:27,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:27,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:32:27,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:32:27,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 12:32:27,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:27,672 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:27,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:32:27,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:32:27,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:32:27,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:32:27,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-25 12:32:27,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:27,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:27,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:27,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 12:32:27,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:32:27,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 12:32:27,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:27,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:27,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:32:27,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:32:27,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:32:27,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:32:27,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 12:32:27,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:27,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:27,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:27,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 12:32:27,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:32:27,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 12:32:27,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:27,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:27,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:32:27,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:32:27,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:32:27,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:32:27,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-25 12:32:27,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:27,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:27,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:27,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 12:32:27,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:32:27,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 12:32:27,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:27,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:27,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:32:27,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:32:27,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:32:27,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:32:27,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 12:32:27,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:27,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:27,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:27,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 12:32:27,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:32:27,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 12:32:27,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:27,782 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:27,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:32:27,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:32:27,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:32:27,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:32:27,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-09-25 12:32:27,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:27,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:27,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:27,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 12:32:27,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:32:27,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 12:32:27,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:27,799 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:27,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:32:27,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:32:27,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:32:27,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:32:27,812 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-09-25 12:32:27,819 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1446833791] [2020-09-25 12:32:27,820 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:32:27,821 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 12:32:27,821 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297204993] [2020-09-25 12:32:27,822 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 12:32:27,822 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:32:27,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 12:32:27,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-25 12:32:27,823 INFO L87 Difference]: Start difference. First operand 147 states and 169 transitions. Second operand 11 states. [2020-09-25 12:32:28,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:32:28,193 INFO L93 Difference]: Finished difference Result 157 states and 181 transitions. [2020-09-25 12:32:28,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 12:32:28,194 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 63 [2020-09-25 12:32:28,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:32:28,195 INFO L225 Difference]: With dead ends: 157 [2020-09-25 12:32:28,197 INFO L226 Difference]: Without dead ends: 152 [2020-09-25 12:32:28,198 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2020-09-25 12:32:28,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-09-25 12:32:28,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2020-09-25 12:32:28,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-09-25 12:32:28,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 174 transitions. [2020-09-25 12:32:28,215 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 174 transitions. Word has length 63 [2020-09-25 12:32:28,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:32:28,217 INFO L479 AbstractCegarLoop]: Abstraction has 152 states and 174 transitions. [2020-09-25 12:32:28,217 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 12:32:28,218 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 174 transitions. [2020-09-25 12:32:28,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-09-25 12:32:28,221 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:32:28,221 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:32:28,221 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 12:32:28,221 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:32:28,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:32:28,222 INFO L82 PathProgramCache]: Analyzing trace with hash -822659134, now seen corresponding path program 1 times [2020-09-25 12:32:28,222 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:32:28,222 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [331627336] [2020-09-25 12:32:28,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:32:28,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:28,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:28,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:28,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:29,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:29,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-25 12:32:29,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 12:32:29,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1325 [2020-09-25 12:32:29,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:29,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:29,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:32:29,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 12:32:29,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 12:32:29,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:32:29,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:32:29,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:29,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:29,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:29,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:32:29,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:32:29,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 12:32:29,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:29,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:29,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:32:29,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:32:29,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:32:29,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:32:29,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-25 12:32:29,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:29,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:29,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:29,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 12:32:29,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:32:29,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 12:32:29,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:29,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:29,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:32:29,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:32:29,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:32:29,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:32:29,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 12:32:29,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:29,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:29,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:29,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 12:32:29,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:32:29,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 12:32:29,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:29,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:29,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:32:29,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:32:29,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:32:29,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:32:29,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-25 12:32:29,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:29,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:29,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:29,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 12:32:29,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:32:29,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 12:32:29,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:29,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:29,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:32:29,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:32:29,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:32:29,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:32:29,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 12:32:29,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:29,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:29,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:29,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 12:32:29,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:32:29,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 12:32:29,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:29,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:29,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:32:29,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:32:29,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:32:29,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:32:29,731 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-09-25 12:32:29,731 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [331627336] [2020-09-25 12:32:29,731 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:32:29,732 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-25 12:32:29,732 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61237647] [2020-09-25 12:32:29,733 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 12:32:29,733 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:32:29,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 12:32:29,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-25 12:32:29,734 INFO L87 Difference]: Start difference. First operand 152 states and 174 transitions. Second operand 9 states. [2020-09-25 12:32:29,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:32:29,983 INFO L93 Difference]: Finished difference Result 187 states and 216 transitions. [2020-09-25 12:32:29,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 12:32:29,984 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 65 [2020-09-25 12:32:29,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:32:29,986 INFO L225 Difference]: With dead ends: 187 [2020-09-25 12:32:29,986 INFO L226 Difference]: Without dead ends: 185 [2020-09-25 12:32:29,987 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2020-09-25 12:32:29,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-09-25 12:32:29,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 177. [2020-09-25 12:32:29,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2020-09-25 12:32:29,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 205 transitions. [2020-09-25 12:32:29,999 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 205 transitions. Word has length 65 [2020-09-25 12:32:29,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:32:30,000 INFO L479 AbstractCegarLoop]: Abstraction has 177 states and 205 transitions. [2020-09-25 12:32:30,000 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 12:32:30,000 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 205 transitions. [2020-09-25 12:32:30,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-09-25 12:32:30,001 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:32:30,001 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:32:30,001 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 12:32:30,002 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:32:30,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:32:30,002 INFO L82 PathProgramCache]: Analyzing trace with hash 869213219, now seen corresponding path program 2 times [2020-09-25 12:32:30,002 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:32:30,003 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2141629425] [2020-09-25 12:32:30,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:32:30,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:30,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:30,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:30,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:35,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:35,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-25 12:32:35,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 12:32:35,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4992 [2020-09-25 12:32:35,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:35,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:35,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 12:32:35,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 12:32:35,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 12:32:35,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:32:35,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:32:35,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:35,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:35,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:35,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:32:35,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:32:35,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:32:35,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:35,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:35,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:32:35,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:32:35,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:32:35,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:32:35,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-25 12:32:35,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:35,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:35,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:35,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 12:32:35,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:32:35,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 12:32:35,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:35,127 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:35,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:32:35,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:32:35,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:32:35,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:32:35,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 12:32:35,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:35,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:35,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:35,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 12:32:35,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:32:35,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 12:32:35,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:35,138 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:35,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:32:35,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:32:35,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:32:35,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:32:35,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-25 12:32:35,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:35,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:35,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:35,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 12:32:35,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:32:35,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 12:32:35,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:35,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:35,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:32:35,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:32:35,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:32:35,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:32:35,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 12:32:35,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:35,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:35,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:35,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 12:32:35,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:32:35,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 12:32:35,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:35,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:35,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:32:35,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:32:35,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:32:35,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:32:35,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-25 12:32:35,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:35,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:35,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:35,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 12:32:35,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:32:35,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 12:32:35,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:35,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:35,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:32:35,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:32:35,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:32:35,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:32:35,196 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 12 proven. 18 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-09-25 12:32:35,196 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2141629425] [2020-09-25 12:32:35,196 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:32:35,197 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 12:32:35,197 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836117220] [2020-09-25 12:32:35,197 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 12:32:35,198 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:32:35,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 12:32:35,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-25 12:32:35,198 INFO L87 Difference]: Start difference. First operand 177 states and 205 transitions. Second operand 10 states. [2020-09-25 12:32:35,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:32:35,427 INFO L93 Difference]: Finished difference Result 184 states and 213 transitions. [2020-09-25 12:32:35,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 12:32:35,428 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 70 [2020-09-25 12:32:35,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:32:35,429 INFO L225 Difference]: With dead ends: 184 [2020-09-25 12:32:35,429 INFO L226 Difference]: Without dead ends: 179 [2020-09-25 12:32:35,430 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2020-09-25 12:32:35,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-09-25 12:32:35,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 176. [2020-09-25 12:32:35,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-09-25 12:32:35,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 201 transitions. [2020-09-25 12:32:35,441 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 201 transitions. Word has length 70 [2020-09-25 12:32:35,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:32:35,442 INFO L479 AbstractCegarLoop]: Abstraction has 176 states and 201 transitions. [2020-09-25 12:32:35,442 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 12:32:35,442 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 201 transitions. [2020-09-25 12:32:35,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-09-25 12:32:35,443 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:32:35,443 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:32:35,444 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 12:32:35,444 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:32:35,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:32:35,444 INFO L82 PathProgramCache]: Analyzing trace with hash -1269119089, now seen corresponding path program 1 times [2020-09-25 12:32:35,444 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:32:35,445 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1382289544] [2020-09-25 12:32:35,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:32:35,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:35,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:35,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:35,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:35,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:40,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:40,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-09-25 12:32:40,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 12:32:40,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 12:32:40,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:40,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:40,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 12:32:40,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 12:32:40,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-09-25 12:32:40,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:32:40,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:32:40,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:40,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:40,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:40,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:32:40,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:32:40,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:32:40,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:40,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:40,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:32:40,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:32:40,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:32:40,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:32:40,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-25 12:32:40,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:40,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:40,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:40,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:40,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 12:32:40,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:32:40,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 12:32:40,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:40,577 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:40,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:32:40,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:32:40,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:32:40,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:32:40,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 12:32:40,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:40,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:40,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:40,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 12:32:40,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:32:40,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 12:32:40,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:40,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:40,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:32:40,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:32:40,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:32:40,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:32:40,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-25 12:32:40,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:40,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:40,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:40,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 12:32:40,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:32:40,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 12:32:40,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:40,600 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:40,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:32:40,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:32:40,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:32:40,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:32:40,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-25 12:32:40,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:40,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:40,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:40,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 12:32:40,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:32:40,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 12:32:40,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:40,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:40,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:32:40,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:32:40,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:32:40,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:32:40,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 12:32:40,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:40,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:40,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:40,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 12:32:40,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:32:40,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 12:32:40,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:40,627 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:40,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:32:40,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:32:40,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:32:40,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:32:40,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-09-25 12:32:40,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:40,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:40,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:40,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 12:32:40,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:32:40,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 12:32:40,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:40,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:40,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:32:40,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:32:40,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:32:40,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:32:40,648 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-09-25 12:32:40,649 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1382289544] [2020-09-25 12:32:40,649 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:32:40,649 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-25 12:32:40,649 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801257147] [2020-09-25 12:32:40,650 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 12:32:40,650 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:32:40,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 12:32:40,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-09-25 12:32:40,650 INFO L87 Difference]: Start difference. First operand 176 states and 201 transitions. Second operand 11 states. [2020-09-25 12:32:40,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:32:40,913 INFO L93 Difference]: Finished difference Result 195 states and 222 transitions. [2020-09-25 12:32:40,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 12:32:40,913 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 76 [2020-09-25 12:32:40,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:32:40,915 INFO L225 Difference]: With dead ends: 195 [2020-09-25 12:32:40,916 INFO L226 Difference]: Without dead ends: 193 [2020-09-25 12:32:40,916 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2020-09-25 12:32:40,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-09-25 12:32:40,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 176. [2020-09-25 12:32:40,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-09-25 12:32:40,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 201 transitions. [2020-09-25 12:32:40,932 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 201 transitions. Word has length 76 [2020-09-25 12:32:40,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:32:40,932 INFO L479 AbstractCegarLoop]: Abstraction has 176 states and 201 transitions. [2020-09-25 12:32:40,933 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 12:32:40,933 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 201 transitions. [2020-09-25 12:32:40,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-09-25 12:32:40,934 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:32:40,934 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:32:40,934 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-25 12:32:40,935 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:32:40,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:32:40,935 INFO L82 PathProgramCache]: Analyzing trace with hash -1147260786, now seen corresponding path program 1 times [2020-09-25 12:32:40,935 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:32:40,936 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [107558] [2020-09-25 12:32:40,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:32:40,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:40,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:40,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:41,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:41,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:45,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:45,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-09-25 12:32:45,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 12:32:45,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 12:32:45,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:45,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:45,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 12:32:45,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 12:32:45,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-09-25 12:32:45,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:32:46,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:32:46,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:46,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:46,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:46,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:32:46,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:32:46,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:32:46,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:46,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:46,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:32:46,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:32:46,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:32:46,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:32:46,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-25 12:32:46,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:46,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:46,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:46,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 12:32:46,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:32:46,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 12:32:46,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:46,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:46,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:32:46,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:32:46,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:32:46,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:32:46,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 12:32:46,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:46,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:46,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:46,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 12:32:46,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:32:46,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 12:32:46,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:46,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:46,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:32:46,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:32:46,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:32:46,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:32:46,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-25 12:32:46,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:46,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:46,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:46,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 12:32:46,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:32:46,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 12:32:46,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:46,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:46,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:32:46,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:32:46,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:32:46,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:32:46,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 12:32:46,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:46,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:46,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:46,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 12:32:46,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:32:46,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 12:32:46,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:46,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:46,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:32:46,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:32:46,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:32:46,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:32:46,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-25 12:32:46,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:46,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:46,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:46,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 12:32:46,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:32:46,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 12:32:46,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:46,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:46,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:32:46,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:32:46,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:32:46,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:32:46,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-25 12:32:46,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:46,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:46,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:46,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 12:32:46,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:32:46,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 12:32:46,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:46,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:46,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:32:46,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:32:46,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:32:46,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:32:46,119 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-09-25 12:32:46,119 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [107558] [2020-09-25 12:32:46,120 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:32:46,120 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-25 12:32:46,120 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934318455] [2020-09-25 12:32:46,120 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 12:32:46,121 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:32:46,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 12:32:46,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-25 12:32:46,121 INFO L87 Difference]: Start difference. First operand 176 states and 201 transitions. Second operand 11 states. [2020-09-25 12:32:46,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:32:46,425 INFO L93 Difference]: Finished difference Result 218 states and 251 transitions. [2020-09-25 12:32:46,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 12:32:46,425 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 79 [2020-09-25 12:32:46,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:32:46,427 INFO L225 Difference]: With dead ends: 218 [2020-09-25 12:32:46,427 INFO L226 Difference]: Without dead ends: 150 [2020-09-25 12:32:46,428 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2020-09-25 12:32:46,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-09-25 12:32:46,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 146. [2020-09-25 12:32:46,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-09-25 12:32:46,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 163 transitions. [2020-09-25 12:32:46,437 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 163 transitions. Word has length 79 [2020-09-25 12:32:46,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:32:46,437 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 163 transitions. [2020-09-25 12:32:46,438 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 12:32:46,438 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 163 transitions. [2020-09-25 12:32:46,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-09-25 12:32:46,439 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:32:46,439 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:32:46,439 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-25 12:32:46,439 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:32:46,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:32:46,440 INFO L82 PathProgramCache]: Analyzing trace with hash 341113206, now seen corresponding path program 2 times [2020-09-25 12:32:46,440 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:32:46,440 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1269641402] [2020-09-25 12:32:46,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:32:46,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:46,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:46,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:46,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:46,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:51,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:51,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-09-25 12:32:51,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 12:32:51,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 12:32:51,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:51,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:51,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 12:32:51,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 12:32:51,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-09-25 12:32:51,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:32:51,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:32:51,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:51,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:51,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:51,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:32:51,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:32:51,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:32:51,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:51,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:51,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:32:51,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:32:51,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:32:51,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:32:51,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-25 12:32:51,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:51,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:51,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:51,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 12:32:51,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:32:51,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 12:32:51,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:51,550 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:51,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:32:51,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:32:51,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:32:51,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:32:51,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 12:32:51,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:51,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:51,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:51,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 12:32:51,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:32:51,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 12:32:51,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:51,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:51,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:32:51,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:32:51,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:32:51,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:32:51,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-25 12:32:51,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:51,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:51,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:51,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 12:32:51,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:32:51,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 12:32:51,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:51,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:51,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:32:51,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:32:51,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:32:51,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:32:51,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 12:32:51,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:51,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:51,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:51,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 12:32:51,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:32:51,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 12:32:51,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:51,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:51,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:32:51,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:32:51,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:32:51,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:32:51,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-09-25 12:32:51,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:51,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:51,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:51,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 12:32:51,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:32:51,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 12:32:51,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:51,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:51,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:32:51,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:32:51,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:32:51,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:32:51,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-09-25 12:32:51,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:51,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:51,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:51,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 12:32:51,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:32:51,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 12:32:51,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:51,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:51,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:32:51,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:32:51,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:32:51,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:32:51,632 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-09-25 12:32:51,632 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1269641402] [2020-09-25 12:32:51,632 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:32:51,633 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-25 12:32:51,633 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111885204] [2020-09-25 12:32:51,634 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 12:32:51,634 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:32:51,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 12:32:51,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-25 12:32:51,635 INFO L87 Difference]: Start difference. First operand 146 states and 163 transitions. Second operand 11 states. [2020-09-25 12:32:52,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:32:52,031 INFO L93 Difference]: Finished difference Result 193 states and 218 transitions. [2020-09-25 12:32:52,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 12:32:52,032 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 79 [2020-09-25 12:32:52,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:32:52,033 INFO L225 Difference]: With dead ends: 193 [2020-09-25 12:32:52,034 INFO L226 Difference]: Without dead ends: 124 [2020-09-25 12:32:52,035 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2020-09-25 12:32:52,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-09-25 12:32:52,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 122. [2020-09-25 12:32:52,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-09-25 12:32:52,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 136 transitions. [2020-09-25 12:32:52,044 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 136 transitions. Word has length 79 [2020-09-25 12:32:52,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:32:52,045 INFO L479 AbstractCegarLoop]: Abstraction has 122 states and 136 transitions. [2020-09-25 12:32:52,045 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 12:32:52,045 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 136 transitions. [2020-09-25 12:32:52,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-09-25 12:32:52,047 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:32:52,047 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:32:52,047 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-25 12:32:52,047 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:32:52,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:32:52,048 INFO L82 PathProgramCache]: Analyzing trace with hash -343631243, now seen corresponding path program 1 times [2020-09-25 12:32:52,048 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:32:52,049 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1447082312] [2020-09-25 12:32:52,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:32:52,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:52,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:52,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:52,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:52,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:57,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:57,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-25 12:32:57,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 12:32:57,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 12:32:57,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:57,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:57,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 12:32:57,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 12:32:57,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 12:32:57,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:32:57,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:32:57,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:57,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:57,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:57,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:32:57,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:32:57,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:32:57,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:57,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:57,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:32:57,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:32:57,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:32:57,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:32:57,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-25 12:32:57,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:57,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:57,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:57,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 12:32:57,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:32:57,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 12:32:57,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:57,191 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:57,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:32:57,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:32:57,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:32:57,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:32:57,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 12:32:57,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:57,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:57,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:57,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 12:32:57,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:32:57,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 12:32:57,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:57,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:57,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:32:57,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:32:57,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:32:57,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:32:57,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-25 12:32:57,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:57,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:57,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:57,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 12:32:57,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:32:57,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 12:32:57,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:57,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:57,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:32:57,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:32:57,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:32:57,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:32:57,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-25 12:32:57,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:57,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:57,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:57,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 12:32:57,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:32:57,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 12:32:57,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:57,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:57,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:32:57,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:32:57,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:32:57,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:32:57,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 12:32:57,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:57,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:57,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:57,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 12:32:57,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:32:57,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 12:32:57,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:57,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:57,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:32:57,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:32:57,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:32:57,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:32:57,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-09-25 12:32:57,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:57,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:57,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:57,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 12:32:57,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:32:57,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 12:32:57,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:57,269 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:57,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:32:57,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:32:57,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:32:57,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:32:57,279 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 21 proven. 4 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-09-25 12:32:57,279 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1447082312] [2020-09-25 12:32:57,279 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:32:57,280 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 12:32:57,280 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199691956] [2020-09-25 12:32:57,281 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 12:32:57,281 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:32:57,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 12:32:57,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-25 12:32:57,282 INFO L87 Difference]: Start difference. First operand 122 states and 136 transitions. Second operand 11 states. [2020-09-25 12:32:57,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:32:57,647 INFO L93 Difference]: Finished difference Result 199 states and 228 transitions. [2020-09-25 12:32:57,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 12:32:57,647 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 83 [2020-09-25 12:32:57,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:32:57,650 INFO L225 Difference]: With dead ends: 199 [2020-09-25 12:32:57,650 INFO L226 Difference]: Without dead ends: 195 [2020-09-25 12:32:57,654 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2020-09-25 12:32:57,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2020-09-25 12:32:57,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 184. [2020-09-25 12:32:57,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2020-09-25 12:32:57,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 209 transitions. [2020-09-25 12:32:57,673 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 209 transitions. Word has length 83 [2020-09-25 12:32:57,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:32:57,673 INFO L479 AbstractCegarLoop]: Abstraction has 184 states and 209 transitions. [2020-09-25 12:32:57,673 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 12:32:57,673 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 209 transitions. [2020-09-25 12:32:57,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-09-25 12:32:57,674 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:32:57,675 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:32:57,675 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-25 12:32:57,675 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:32:57,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:32:57,676 INFO L82 PathProgramCache]: Analyzing trace with hash 813915649, now seen corresponding path program 1 times [2020-09-25 12:32:57,676 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:32:57,677 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [954811920] [2020-09-25 12:32:57,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:32:57,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:57,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:57,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:57,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking...