/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label06.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 04:29:29,943 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 04:29:29,947 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 04:29:29,991 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 04:29:29,992 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 04:29:29,999 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 04:29:30,002 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 04:29:30,005 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 04:29:30,008 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 04:29:30,011 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 04:29:30,012 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 04:29:30,013 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 04:29:30,013 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 04:29:30,016 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 04:29:30,020 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 04:29:30,022 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 04:29:30,023 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 04:29:30,024 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 04:29:30,025 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 04:29:30,033 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 04:29:30,036 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 04:29:30,037 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 04:29:30,038 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 04:29:30,039 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 04:29:30,052 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 04:29:30,052 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 04:29:30,053 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 04:29:30,056 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 04:29:30,056 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 04:29:30,058 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 04:29:30,058 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 04:29:30,059 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 04:29:30,060 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 04:29:30,061 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 04:29:30,062 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 04:29:30,063 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 04:29:30,064 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 04:29:30,064 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 04:29:30,064 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 04:29:30,065 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 04:29:30,067 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 04:29:30,068 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 04:29:30,113 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 04:29:30,114 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 04:29:30,116 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 04:29:30,116 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 04:29:30,116 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 04:29:30,117 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 04:29:30,117 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 04:29:30,117 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 04:29:30,117 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 04:29:30,118 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 04:29:30,119 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 04:29:30,119 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 04:29:30,119 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 04:29:30,120 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 04:29:30,120 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 04:29:30,120 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 04:29:30,120 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 04:29:30,121 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 04:29:30,121 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 04:29:30,121 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 04:29:30,121 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 04:29:30,121 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:29:30,122 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 04:29:30,122 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 04:29:30,122 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 04:29:30,122 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 04:29:30,122 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 04:29:30,123 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 04:29:30,123 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 04:29:30,123 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=WIDESTAMONGSMALL;tolerance=0.2;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=WIDESTAMONGSMALL;tolerance=0.2;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=WIDESTAMONGSMALL;tolerance=0.2;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=WIDESTAMONGSMALL;tolerance=0.2;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=WIDESTAMONGSMALL;tolerance=0.2;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=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; [2020-09-25 04:29:30,593 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 04:29:30,618 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 04:29:30,623 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 04:29:30,624 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 04:29:30,625 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 04:29:30,626 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label06.c [2020-09-25 04:29:30,709 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f58e37d24/fd7045f374ab44e2a4b0f425a2d85241/FLAG891e0d42f [2020-09-25 04:29:31,369 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 04:29:31,370 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label06.c [2020-09-25 04:29:31,384 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f58e37d24/fd7045f374ab44e2a4b0f425a2d85241/FLAG891e0d42f [2020-09-25 04:29:31,574 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f58e37d24/fd7045f374ab44e2a4b0f425a2d85241 [2020-09-25 04:29:31,589 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 04:29:31,596 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 04:29:31,600 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 04:29:31,600 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 04:29:31,605 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 04:29:31,606 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:29:31" (1/1) ... [2020-09-25 04:29:31,612 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bb9461a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:29:31, skipping insertion in model container [2020-09-25 04:29:31,612 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:29:31" (1/1) ... [2020-09-25 04:29:31,624 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 04:29:31,679 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 04:29:32,166 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:29:32,173 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 04:29:32,385 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:29:32,404 INFO L208 MainTranslator]: Completed translation [2020-09-25 04:29:32,405 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:29:32 WrapperNode [2020-09-25 04:29:32,405 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 04:29:32,406 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 04:29:32,406 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 04:29:32,406 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 04:29:32,425 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:29:32" (1/1) ... [2020-09-25 04:29:32,425 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:29:32" (1/1) ... [2020-09-25 04:29:32,445 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:29:32" (1/1) ... [2020-09-25 04:29:32,445 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:29:32" (1/1) ... [2020-09-25 04:29:32,487 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:29:32" (1/1) ... [2020-09-25 04:29:32,511 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:29:32" (1/1) ... [2020-09-25 04:29:32,523 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:29:32" (1/1) ... [2020-09-25 04:29:32,537 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 04:29:32,537 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 04:29:32,538 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 04:29:32,538 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 04:29:32,540 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:29:32" (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 04:29:32,637 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 04:29:32,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 04:29:32,638 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 04:29:32,638 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 04:29:32,639 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 04:29:32,639 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 04:29:32,639 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 04:29:32,641 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 04:29:32,641 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 04:29:32,641 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 04:29:32,641 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 04:29:34,078 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 04:29:34,078 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 04:29:34,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:29:34 BoogieIcfgContainer [2020-09-25 04:29:34,087 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 04:29:34,089 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 04:29:34,089 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 04:29:34,093 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 04:29:34,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 04:29:31" (1/3) ... [2020-09-25 04:29:34,094 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@564d2dd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:29:34, skipping insertion in model container [2020-09-25 04:29:34,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:29:32" (2/3) ... [2020-09-25 04:29:34,095 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@564d2dd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:29:34, skipping insertion in model container [2020-09-25 04:29:34,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:29:34" (3/3) ... [2020-09-25 04:29:34,098 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label06.c [2020-09-25 04:29:34,110 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 04:29:34,122 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 04:29:34,146 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 04:29:34,189 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 04:29:34,189 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 04:29:34,190 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 04:29:34,190 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 04:29:34,190 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 04:29:34,190 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 04:29:34,190 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 04:29:34,191 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 04:29:34,226 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 04:29:34,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-09-25 04:29:34,238 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:29:34,239 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:29:34,240 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:29:34,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:29:34,250 INFO L82 PathProgramCache]: Analyzing trace with hash -200720489, now seen corresponding path program 1 times [2020-09-25 04:29:34,264 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:29:34,265 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [955057888] [2020-09-25 04:29:34,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:29:34,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:34,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:34,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:34,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:35,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:35,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-25 04:29:35,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 04:29:35,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1044 [2020-09-25 04:29:35,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:35,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:35,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:29:35,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 04:29:35,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 04:29:35,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 04:29:35,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:29:35,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:35,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:35,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:35,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:29:35,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:29:35,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 04:29:35,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:35,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:35,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:29:35,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:29:35,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:29:35,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:29:35,744 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 04:29:35,746 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [955057888] [2020-09-25 04:29:35,748 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:29:35,749 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 04:29:35,750 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944901132] [2020-09-25 04:29:35,759 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:29:35,760 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:29:35,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:29:35,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:29:35,790 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 5 states. [2020-09-25 04:29:38,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:29:38,864 INFO L93 Difference]: Finished difference Result 1352 states and 1911 transitions. [2020-09-25 04:29:38,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 04:29:38,866 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 43 [2020-09-25 04:29:38,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:29:38,894 INFO L225 Difference]: With dead ends: 1352 [2020-09-25 04:29:38,894 INFO L226 Difference]: Without dead ends: 806 [2020-09-25 04:29:38,905 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:29:38,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806 states. [2020-09-25 04:29:39,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806 to 727. [2020-09-25 04:29:39,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 727 states. [2020-09-25 04:29:39,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 896 transitions. [2020-09-25 04:29:39,025 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 896 transitions. Word has length 43 [2020-09-25 04:29:39,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:29:39,026 INFO L479 AbstractCegarLoop]: Abstraction has 727 states and 896 transitions. [2020-09-25 04:29:39,026 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:29:39,026 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 896 transitions. [2020-09-25 04:29:39,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-09-25 04:29:39,034 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:29:39,034 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:29:39,035 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 04:29:39,035 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:29:39,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:29:39,036 INFO L82 PathProgramCache]: Analyzing trace with hash -819138438, now seen corresponding path program 1 times [2020-09-25 04:29:39,036 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:29:39,036 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [759643800] [2020-09-25 04:29:39,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:29:39,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:39,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:39,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:39,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:40,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:40,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:40,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:42,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:42,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-09-25 04:29:42,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 04:29:42,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2945 [2020-09-25 04:29:42,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:42,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:42,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:29:42,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-09-25 04:29:42,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 04:29:42,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:29:42,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:29:42,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:42,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:42,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:42,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:29:42,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:29:42,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 04:29:42,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:42,143 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:42,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:29:42,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:29:42,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:29:42,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:29:42,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:29:42,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:42,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:42,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:42,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 04:29:42,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:29:42,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-09-25 04:29:42,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:42,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:42,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:29:42,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:29:42,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 04:29:42,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:29:42,362 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:29:42,363 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [759643800] [2020-09-25 04:29:42,363 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:29:42,364 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:29:42,364 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421818783] [2020-09-25 04:29:42,367 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:29:42,368 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:29:42,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:29:42,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:29:42,368 INFO L87 Difference]: Start difference. First operand 727 states and 896 transitions. Second operand 5 states. [2020-09-25 04:29:44,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:29:44,130 INFO L93 Difference]: Finished difference Result 1033 states and 1346 transitions. [2020-09-25 04:29:44,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:29:44,131 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 126 [2020-09-25 04:29:44,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:29:44,142 INFO L225 Difference]: With dead ends: 1033 [2020-09-25 04:29:44,142 INFO L226 Difference]: Without dead ends: 1031 [2020-09-25 04:29:44,144 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:29:44,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1031 states. [2020-09-25 04:29:44,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1031 to 879. [2020-09-25 04:29:44,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 879 states. [2020-09-25 04:29:44,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 879 states to 879 states and 1129 transitions. [2020-09-25 04:29:44,194 INFO L78 Accepts]: Start accepts. Automaton has 879 states and 1129 transitions. Word has length 126 [2020-09-25 04:29:44,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:29:44,197 INFO L479 AbstractCegarLoop]: Abstraction has 879 states and 1129 transitions. [2020-09-25 04:29:44,197 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:29:44,197 INFO L276 IsEmpty]: Start isEmpty. Operand 879 states and 1129 transitions. [2020-09-25 04:29:44,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-09-25 04:29:44,212 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:29:44,212 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:29:44,212 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 04:29:44,213 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:29:44,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:29:44,215 INFO L82 PathProgramCache]: Analyzing trace with hash -203251606, now seen corresponding path program 1 times [2020-09-25 04:29:44,215 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:29:44,215 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [167111759] [2020-09-25 04:29:44,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:29:44,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:44,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:44,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:44,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:45,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:46,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:46,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-09-25 04:29:46,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 04:29:46,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2669 [2020-09-25 04:29:46,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:46,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:46,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:29:46,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-09-25 04:29:46,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 04:29:46,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:29:47,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:29:47,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:47,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:47,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:47,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:29:47,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:29:47,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 04:29:47,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:47,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:47,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:29:47,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:29:47,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:29:47,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:29:47,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:29:47,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:47,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:47,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:47,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 04:29:47,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:29:47,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-09-25 04:29:47,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:47,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:47,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:29:47,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:29:47,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 04:29:47,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:29:47,232 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:29:47,233 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [167111759] [2020-09-25 04:29:47,233 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:29:47,233 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:29:47,234 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118199880] [2020-09-25 04:29:47,235 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:29:47,236 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:29:47,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:29:47,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:29:47,237 INFO L87 Difference]: Start difference. First operand 879 states and 1129 transitions. Second operand 5 states. [2020-09-25 04:29:49,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:29:49,098 INFO L93 Difference]: Finished difference Result 1896 states and 2501 transitions. [2020-09-25 04:29:49,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:29:49,100 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 132 [2020-09-25 04:29:49,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:29:49,107 INFO L225 Difference]: With dead ends: 1896 [2020-09-25 04:29:49,108 INFO L226 Difference]: Without dead ends: 841 [2020-09-25 04:29:49,112 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:29:49,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 841 states. [2020-09-25 04:29:49,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 841 to 841. [2020-09-25 04:29:49,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 841 states. [2020-09-25 04:29:49,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 841 states to 841 states and 1063 transitions. [2020-09-25 04:29:49,139 INFO L78 Accepts]: Start accepts. Automaton has 841 states and 1063 transitions. Word has length 132 [2020-09-25 04:29:49,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:29:49,140 INFO L479 AbstractCegarLoop]: Abstraction has 841 states and 1063 transitions. [2020-09-25 04:29:49,145 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:29:49,145 INFO L276 IsEmpty]: Start isEmpty. Operand 841 states and 1063 transitions. [2020-09-25 04:29:49,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-09-25 04:29:49,148 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:29:49,148 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:29:49,148 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 04:29:49,148 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:29:49,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:29:49,151 INFO L82 PathProgramCache]: Analyzing trace with hash -1010276362, now seen corresponding path program 1 times [2020-09-25 04:29:49,151 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:29:49,151 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1819419847] [2020-09-25 04:29:49,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:29:49,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:49,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:49,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:49,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:49,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:50,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:51,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:52,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:54,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:54,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-09-25 04:29:54,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 04:29:54,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-25 04:29:54,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:54,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:54,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:29:54,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 124 [2020-09-25 04:29:54,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 04:29:54,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:29:54,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:29:54,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:54,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:54,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:54,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:29:54,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:29:54,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 04:29:54,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:54,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:54,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:29:54,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:29:54,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:29:54,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:29:54,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:29:54,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:54,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:54,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:54,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-25 04:29:54,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:29:54,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-09-25 04:29:54,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:54,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:54,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:29:54,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:29:54,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-09-25 04:29:54,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:29:54,462 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:29:54,464 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1819419847] [2020-09-25 04:29:54,464 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:29:54,464 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:29:54,465 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416689256] [2020-09-25 04:29:54,466 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:29:54,466 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:29:54,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:29:54,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:29:54,469 INFO L87 Difference]: Start difference. First operand 841 states and 1063 transitions. Second operand 5 states. [2020-09-25 04:29:56,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:29:56,272 INFO L93 Difference]: Finished difference Result 1972 states and 2605 transitions. [2020-09-25 04:29:56,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:29:56,277 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 151 [2020-09-25 04:29:56,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:29:56,288 INFO L225 Difference]: With dead ends: 1972 [2020-09-25 04:29:56,288 INFO L226 Difference]: Without dead ends: 1297 [2020-09-25 04:29:56,292 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:29:56,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1297 states. [2020-09-25 04:29:56,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1297 to 1297. [2020-09-25 04:29:56,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1297 states. [2020-09-25 04:29:56,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1297 states to 1297 states and 1625 transitions. [2020-09-25 04:29:56,368 INFO L78 Accepts]: Start accepts. Automaton has 1297 states and 1625 transitions. Word has length 151 [2020-09-25 04:29:56,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:29:56,369 INFO L479 AbstractCegarLoop]: Abstraction has 1297 states and 1625 transitions. [2020-09-25 04:29:56,370 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:29:56,370 INFO L276 IsEmpty]: Start isEmpty. Operand 1297 states and 1625 transitions. [2020-09-25 04:29:56,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-09-25 04:29:56,373 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:29:56,373 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:29:56,373 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 04:29:56,373 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:29:56,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:29:56,374 INFO L82 PathProgramCache]: Analyzing trace with hash -554529762, now seen corresponding path program 1 times [2020-09-25 04:29:56,374 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:29:56,374 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [709046942] [2020-09-25 04:29:56,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:29:56,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:56,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:56,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:57,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:57,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:00,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:00,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-09-25 04:30:00,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 04:30:00,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3809 [2020-09-25 04:30:00,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:00,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:00,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:30:00,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 149 [2020-09-25 04:30:00,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 04:30:00,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:00,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:30:00,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:00,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:00,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:00,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:30:00,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:00,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 04:30:00,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:00,314 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:00,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:30:00,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:30:00,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:30:00,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:00,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:30:00,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:00,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:00,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:00,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-09-25 04:30:00,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:00,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-09-25 04:30:00,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:00,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:00,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:30:00,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:30:00,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-09-25 04:30:00,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:00,593 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:30:00,594 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [709046942] [2020-09-25 04:30:00,594 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:30:00,594 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 04:30:00,595 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467718898] [2020-09-25 04:30:00,596 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 04:30:00,596 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:30:00,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 04:30:00,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:30:00,597 INFO L87 Difference]: Start difference. First operand 1297 states and 1625 transitions. Second operand 6 states. [2020-09-25 04:30:02,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:30:02,340 INFO L93 Difference]: Finished difference Result 1755 states and 2259 transitions. [2020-09-25 04:30:02,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:30:02,341 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 175 [2020-09-25 04:30:02,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:30:02,351 INFO L225 Difference]: With dead ends: 1755 [2020-09-25 04:30:02,351 INFO L226 Difference]: Without dead ends: 1753 [2020-09-25 04:30:02,353 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:30:02,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1753 states. [2020-09-25 04:30:02,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1753 to 1453. [2020-09-25 04:30:02,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1453 states. [2020-09-25 04:30:02,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1453 states to 1453 states and 1864 transitions. [2020-09-25 04:30:02,404 INFO L78 Accepts]: Start accepts. Automaton has 1453 states and 1864 transitions. Word has length 175 [2020-09-25 04:30:02,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:30:02,404 INFO L479 AbstractCegarLoop]: Abstraction has 1453 states and 1864 transitions. [2020-09-25 04:30:02,404 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 04:30:02,405 INFO L276 IsEmpty]: Start isEmpty. Operand 1453 states and 1864 transitions. [2020-09-25 04:30:02,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2020-09-25 04:30:02,413 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:30:02,413 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:30:02,413 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 04:30:02,414 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:30:02,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:30:02,414 INFO L82 PathProgramCache]: Analyzing trace with hash -125481870, now seen corresponding path program 1 times [2020-09-25 04:30:02,414 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:30:02,415 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [559475050] [2020-09-25 04:30:02,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:30:02,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:02,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:02,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:02,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:02,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:03,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:05,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:06,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:07,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:07,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-09-25 04:30:07,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 04:30:07,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-09-25 04:30:07,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:07,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:07,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:30:07,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-09-25 04:30:07,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-09-25 04:30:07,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:07,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:30:07,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:07,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:07,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:07,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:30:07,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:07,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 04:30:07,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:07,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:07,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:30:07,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:30:07,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:30:07,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:07,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:30:07,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:07,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:07,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:07,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 04:30:07,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:07,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-09-25 04:30:07,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:07,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:07,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:30:07,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:30:07,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 04:30:07,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:07,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-25 04:30:07,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:07,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:07,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:07,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-09-25 04:30:07,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:07,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 241 [2020-09-25 04:30:07,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:07,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:07,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:30:07,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:30:07,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-09-25 04:30:07,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:08,135 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 131 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:30:08,135 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [559475050] [2020-09-25 04:30:08,136 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:30:08,136 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 04:30:08,137 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138614783] [2020-09-25 04:30:08,137 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:30:08,138 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:30:08,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:30:08,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:30:08,138 INFO L87 Difference]: Start difference. First operand 1453 states and 1864 transitions. Second operand 7 states. [2020-09-25 04:30:10,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:30:10,153 INFO L93 Difference]: Finished difference Result 3404 states and 4486 transitions. [2020-09-25 04:30:10,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 04:30:10,154 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 262 [2020-09-25 04:30:10,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:30:10,172 INFO L225 Difference]: With dead ends: 3404 [2020-09-25 04:30:10,172 INFO L226 Difference]: Without dead ends: 1966 [2020-09-25 04:30:10,177 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 04:30:10,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1966 states. [2020-09-25 04:30:10,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1966 to 1620. [2020-09-25 04:30:10,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1620 states. [2020-09-25 04:30:10,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1620 states to 1620 states and 2055 transitions. [2020-09-25 04:30:10,253 INFO L78 Accepts]: Start accepts. Automaton has 1620 states and 2055 transitions. Word has length 262 [2020-09-25 04:30:10,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:30:10,254 INFO L479 AbstractCegarLoop]: Abstraction has 1620 states and 2055 transitions. [2020-09-25 04:30:10,254 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:30:10,254 INFO L276 IsEmpty]: Start isEmpty. Operand 1620 states and 2055 transitions. [2020-09-25 04:30:10,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2020-09-25 04:30:10,263 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:30:10,263 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:30:10,264 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 04:30:10,264 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:30:10,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:30:10,264 INFO L82 PathProgramCache]: Analyzing trace with hash -1245661752, now seen corresponding path program 1 times [2020-09-25 04:30:10,265 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:30:10,265 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [994101132] [2020-09-25 04:30:10,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:30:10,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:10,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:10,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:10,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:11,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:11,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:11,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:11,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:15,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:15,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 357 [2020-09-25 04:30:15,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 04:30:15,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-25 04:30:15,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:15,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:15,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:30:15,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 181 [2020-09-25 04:30:15,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-09-25 04:30:15,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:15,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:30:15,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:15,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:15,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:15,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:30:15,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:15,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 04:30:15,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:15,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:15,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:30:15,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:30:15,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:30:15,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:15,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:30:15,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:15,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:15,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:15,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 04:30:15,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:15,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 04:30:15,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:15,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:15,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:30:15,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:30:15,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:30:15,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:15,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-25 04:30:15,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:15,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:15,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:15,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 04:30:15,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:15,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-09-25 04:30:15,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:15,626 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:15,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:30:15,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:30:15,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-25 04:30:15,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:15,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-09-25 04:30:15,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:15,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:15,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:15,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-09-25 04:30:15,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:15,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 264 [2020-09-25 04:30:15,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:15,955 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:15,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:30:15,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:30:15,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-09-25 04:30:15,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:16,193 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 240 proven. 2 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-09-25 04:30:16,194 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [994101132] [2020-09-25 04:30:16,194 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:30:16,194 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 04:30:16,195 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190607837] [2020-09-25 04:30:16,196 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:30:16,196 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:30:16,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:30:16,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:30:16,197 INFO L87 Difference]: Start difference. First operand 1620 states and 2055 transitions. Second operand 7 states.