/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label12.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 21:53:50,988 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 21:53:50,991 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 21:53:51,031 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 21:53:51,031 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 21:53:51,042 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 21:53:51,044 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 21:53:51,047 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 21:53:51,050 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 21:53:51,052 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 21:53:51,052 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 21:53:51,055 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 21:53:51,055 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 21:53:51,058 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 21:53:51,060 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 21:53:51,061 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 21:53:51,062 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 21:53:51,063 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 21:53:51,064 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 21:53:51,071 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 21:53:51,073 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 21:53:51,074 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 21:53:51,075 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 21:53:51,076 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 21:53:51,079 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 21:53:51,080 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 21:53:51,080 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 21:53:51,082 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 21:53:51,082 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 21:53:51,083 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 21:53:51,083 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 21:53:51,084 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 21:53:51,085 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 21:53:51,085 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 21:53:51,086 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 21:53:51,087 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 21:53:51,087 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 21:53:51,088 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 21:53:51,088 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 21:53:51,088 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 21:53:51,090 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 21:53:51,090 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 21:53:51,126 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 21:53:51,126 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 21:53:51,128 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 21:53:51,128 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 21:53:51,128 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 21:53:51,128 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 21:53:51,129 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 21:53:51,129 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 21:53:51,129 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 21:53:51,129 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 21:53:51,130 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 21:53:51,131 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 21:53:51,131 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 21:53:51,131 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 21:53:51,131 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 21:53:51,132 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 21:53:51,132 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 21:53:51,132 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 21:53:51,132 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 21:53:51,132 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 21:53:51,133 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 21:53:51,133 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 21:53:51,133 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 21:53:51,133 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 21:53:51,133 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 21:53:51,133 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 21:53:51,134 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 21:53:51,134 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 21:53:51,134 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 21:53:51,134 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 21:53:51,416 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 21:53:51,428 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 21:53:51,432 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 21:53:51,433 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 21:53:51,433 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 21:53:51,434 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label12.c [2020-10-14 21:53:51,491 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6899112f0/d2fa48293e7640c2830e6b9ca9d59720/FLAGf98f20e24 [2020-10-14 21:53:52,141 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 21:53:52,142 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label12.c [2020-10-14 21:53:52,158 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6899112f0/d2fa48293e7640c2830e6b9ca9d59720/FLAGf98f20e24 [2020-10-14 21:53:52,318 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6899112f0/d2fa48293e7640c2830e6b9ca9d59720 [2020-10-14 21:53:52,326 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 21:53:52,328 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 21:53:52,329 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 21:53:52,329 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 21:53:52,333 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 21:53:52,334 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:53:52" (1/1) ... [2020-10-14 21:53:52,337 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1808924a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:53:52, skipping insertion in model container [2020-10-14 21:53:52,338 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:53:52" (1/1) ... [2020-10-14 21:53:52,346 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 21:53:52,416 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 21:53:53,410 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:53:53,418 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 21:53:53,781 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:53:53,801 INFO L208 MainTranslator]: Completed translation [2020-10-14 21:53:53,802 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:53:53 WrapperNode [2020-10-14 21:53:53,803 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 21:53:53,803 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 21:53:53,803 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 21:53:53,804 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 21:53:53,817 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:53:53" (1/1) ... [2020-10-14 21:53:53,819 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:53:53" (1/1) ... [2020-10-14 21:53:53,863 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:53:53" (1/1) ... [2020-10-14 21:53:53,863 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:53:53" (1/1) ... [2020-10-14 21:53:53,940 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:53:53" (1/1) ... [2020-10-14 21:53:53,983 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:53:53" (1/1) ... [2020-10-14 21:53:54,008 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:53:53" (1/1) ... [2020-10-14 21:53:54,022 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 21:53:54,022 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 21:53:54,022 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 21:53:54,023 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 21:53:54,024 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:53:53" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 21:53:54,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 21:53:54,090 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 21:53:54,090 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 21:53:54,090 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 21:53:54,090 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 21:53:54,090 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 21:53:54,091 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 21:53:54,091 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 21:53:54,091 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 21:53:54,091 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 21:53:54,091 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 21:53:54,092 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 21:53:54,092 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 21:53:59,795 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 21:53:59,796 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 21:53:59,803 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:53:59 BoogieIcfgContainer [2020-10-14 21:53:59,804 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 21:53:59,805 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 21:53:59,805 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 21:53:59,809 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 21:53:59,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:53:52" (1/3) ... [2020-10-14 21:53:59,810 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@316d57b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:53:59, skipping insertion in model container [2020-10-14 21:53:59,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:53:53" (2/3) ... [2020-10-14 21:53:59,810 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@316d57b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:53:59, skipping insertion in model container [2020-10-14 21:53:59,811 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:53:59" (3/3) ... [2020-10-14 21:53:59,812 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem15_label12.c [2020-10-14 21:53:59,823 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 21:53:59,831 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 21:53:59,846 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 21:53:59,873 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 21:53:59,873 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 21:53:59,873 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 21:53:59,874 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 21:53:59,874 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 21:53:59,874 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 21:53:59,874 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 21:53:59,874 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 21:53:59,911 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states. [2020-10-14 21:53:59,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-14 21:53:59,928 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:53:59,929 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:53:59,930 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:53:59,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:53:59,937 INFO L82 PathProgramCache]: Analyzing trace with hash -397334259, now seen corresponding path program 1 times [2020-10-14 21:53:59,946 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:53:59,947 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1202124553] [2020-10-14 21:53:59,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:54:00,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:54:00,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:00,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:54:00,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 21:54:00,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:54:00,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 459 [2020-10-14 21:54:00,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:54:00,665 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:54:00,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:54:00,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:54:00,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-14 21:54:00,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 21:54:00,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:54:00,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:54:00,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:00,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:54:00,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:54:00,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:54:00,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 21:54:00,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:54:00,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:54:00,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:54:00,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:54:00,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:54:00,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:54:00,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:54:00,821 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1202124553] [2020-10-14 21:54:00,823 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:54:00,823 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 21:54:00,824 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522086093] [2020-10-14 21:54:00,829 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 21:54:00,829 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:54:00,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 21:54:00,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 21:54:00,845 INFO L87 Difference]: Start difference. First operand 437 states. Second operand 4 states. [2020-10-14 21:54:10,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:54:10,777 INFO L93 Difference]: Finished difference Result 1199 states and 2164 transitions. [2020-10-14 21:54:10,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:54:10,781 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 65 [2020-10-14 21:54:10,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:54:10,814 INFO L225 Difference]: With dead ends: 1199 [2020-10-14 21:54:10,815 INFO L226 Difference]: Without dead ends: 697 [2020-10-14 21:54:10,831 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 21:54:10,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2020-10-14 21:54:10,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 691. [2020-10-14 21:54:10,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 691 states. [2020-10-14 21:54:10,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 1012 transitions. [2020-10-14 21:54:10,936 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 1012 transitions. Word has length 65 [2020-10-14 21:54:10,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:54:10,938 INFO L479 AbstractCegarLoop]: Abstraction has 691 states and 1012 transitions. [2020-10-14 21:54:10,938 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 21:54:10,938 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 1012 transitions. [2020-10-14 21:54:10,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-14 21:54:10,944 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:54:10,945 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, 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] [2020-10-14 21:54:10,945 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 21:54:10,945 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:54:10,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:54:10,946 INFO L82 PathProgramCache]: Analyzing trace with hash -946297974, now seen corresponding path program 1 times [2020-10-14 21:54:10,946 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:54:10,947 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1939294528] [2020-10-14 21:54:10,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:54:10,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:54:11,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:11,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:11,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:13,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:54:13,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-14 21:54:13,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:54:13,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2611 [2020-10-14 21:54:13,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:54:13,610 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:54:13,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:54:13,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-14 21:54:13,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 21:54:13,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:54:13,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:54:13,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:54:13,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:13,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:54:13,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:54:13,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:54:13,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:54:13,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:54:13,692 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:54:13,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:54:13,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:54:13,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:54:13,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:54:13,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:54:13,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:54:13,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:13,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:54:13,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 21:54:13,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:54:13,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-14 21:54:13,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:54:13,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:54:13,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:54:13,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:54:13,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 21:54:13,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:54:13,847 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 57 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:54:13,847 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1939294528] [2020-10-14 21:54:13,848 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:54:13,848 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 21:54:13,848 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005798938] [2020-10-14 21:54:13,850 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 21:54:13,850 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:54:13,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 21:54:13,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 21:54:13,851 INFO L87 Difference]: Start difference. First operand 691 states and 1012 transitions. Second operand 5 states. [2020-10-14 21:54:19,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:54:19,715 INFO L93 Difference]: Finished difference Result 2008 states and 2962 transitions. [2020-10-14 21:54:19,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:54:19,716 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 134 [2020-10-14 21:54:19,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:54:19,725 INFO L225 Difference]: With dead ends: 2008 [2020-10-14 21:54:19,726 INFO L226 Difference]: Without dead ends: 1323 [2020-10-14 21:54:19,728 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 [2020-10-14 21:54:19,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1323 states. [2020-10-14 21:54:19,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1323 to 1317. [2020-10-14 21:54:19,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1317 states. [2020-10-14 21:54:19,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1317 states to 1317 states and 1710 transitions. [2020-10-14 21:54:19,793 INFO L78 Accepts]: Start accepts. Automaton has 1317 states and 1710 transitions. Word has length 134 [2020-10-14 21:54:19,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:54:19,795 INFO L479 AbstractCegarLoop]: Abstraction has 1317 states and 1710 transitions. [2020-10-14 21:54:19,795 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 21:54:19,796 INFO L276 IsEmpty]: Start isEmpty. Operand 1317 states and 1710 transitions. [2020-10-14 21:54:19,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-10-14 21:54:19,808 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:54:19,808 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, 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, 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] [2020-10-14 21:54:19,809 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 21:54:19,809 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:54:19,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:54:19,810 INFO L82 PathProgramCache]: Analyzing trace with hash 1344158374, now seen corresponding path program 1 times [2020-10-14 21:54:19,810 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:54:19,811 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [165467535] [2020-10-14 21:54:19,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:54:19,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:54:19,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:20,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:20,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:21,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:23,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:24,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:54:24,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-10-14 21:54:24,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 21:54:24,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4125 [2020-10-14 21:54:24,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:54:24,011 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:54:24,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 21:54:24,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:54:24,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 245 [2020-10-14 21:54:24,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:54:24,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:54:24,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:54:24,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:24,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:54:24,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:54:24,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:54:24,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 21:54:24,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:54:24,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:54:24,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:54:24,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:54:24,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:54:24,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:54:24,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:54:24,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:54:24,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:24,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:24,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:54:24,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 21:54:24,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:54:24,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 241 [2020-10-14 21:54:24,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:54:24,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:54:24,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:54:24,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:54:24,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 21:54:24,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:54:24,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-14 21:54:24,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:54:24,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:24,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:24,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:54:24,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 21:54:24,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:54:24,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 212 [2020-10-14 21:54:24,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:54:24,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:54:24,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:54:24,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:54:24,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 21:54:24,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:54:24,867 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 108 proven. 11 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-10-14 21:54:24,868 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [165467535] [2020-10-14 21:54:24,868 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:54:24,868 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:54:24,869 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110022548] [2020-10-14 21:54:24,871 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:54:24,871 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:54:24,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:54:24,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:54:24,872 INFO L87 Difference]: Start difference. First operand 1317 states and 1710 transitions. Second operand 7 states. [2020-10-14 21:54:40,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:54:40,135 INFO L93 Difference]: Finished difference Result 3886 states and 5317 transitions. [2020-10-14 21:54:40,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 21:54:40,136 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 239 [2020-10-14 21:54:40,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:54:40,150 INFO L225 Difference]: With dead ends: 3886 [2020-10-14 21:54:40,150 INFO L226 Difference]: Without dead ends: 2575 [2020-10-14 21:54:40,154 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2020-10-14 21:54:40,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2575 states. [2020-10-14 21:54:40,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2575 to 2262. [2020-10-14 21:54:40,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2262 states. [2020-10-14 21:54:40,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2262 states to 2262 states and 3071 transitions. [2020-10-14 21:54:40,220 INFO L78 Accepts]: Start accepts. Automaton has 2262 states and 3071 transitions. Word has length 239 [2020-10-14 21:54:40,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:54:40,221 INFO L479 AbstractCegarLoop]: Abstraction has 2262 states and 3071 transitions. [2020-10-14 21:54:40,221 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:54:40,221 INFO L276 IsEmpty]: Start isEmpty. Operand 2262 states and 3071 transitions. [2020-10-14 21:54:40,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2020-10-14 21:54:40,225 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:54:40,226 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, 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, 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] [2020-10-14 21:54:40,226 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 21:54:40,226 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:54:40,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:54:40,226 INFO L82 PathProgramCache]: Analyzing trace with hash -150346962, now seen corresponding path program 1 times [2020-10-14 21:54:40,227 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:54:40,227 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1277843184] [2020-10-14 21:54:40,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:54:40,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:54:40,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:40,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:40,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:41,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:42,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:54:42,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 255 [2020-10-14 21:54:42,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 21:54:42,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2162 [2020-10-14 21:54:42,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:54:42,448 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:54:42,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 21:54:42,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:54:42,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 186 [2020-10-14 21:54:42,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:54:42,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:54:42,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:54:42,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:42,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:54:42,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:54:42,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:54:42,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 21:54:42,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:54:42,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:54:42,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:54:42,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:54:42,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:54:42,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:54:42,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:54:42,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:54:42,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:42,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:54:42,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 21:54:42,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:54:42,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-14 21:54:42,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:54:42,688 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:54:42,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:54:42,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:54:42,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-14 21:54:42,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 21:54:42,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-14 21:54:42,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:54:42,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:42,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:54:42,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-14 21:54:42,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:54:42,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-14 21:54:42,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:54:42,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:54:42,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:54:42,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:54:42,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-14 21:54:42,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:54:42,987 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 117 proven. 2 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-10-14 21:54:42,989 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1277843184] [2020-10-14 21:54:42,989 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:54:42,989 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 21:54:42,990 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147423109] [2020-10-14 21:54:42,990 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:54:42,991 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:54:42,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:54:42,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:54:42,992 INFO L87 Difference]: Start difference. First operand 2262 states and 3071 transitions. Second operand 7 states. [2020-10-14 21:54:49,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:54:49,607 INFO L93 Difference]: Finished difference Result 6108 states and 8071 transitions. [2020-10-14 21:54:49,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 21:54:49,614 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 243 [2020-10-14 21:54:49,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:54:49,635 INFO L225 Difference]: With dead ends: 6108 [2020-10-14 21:54:49,635 INFO L226 Difference]: Without dead ends: 3852 [2020-10-14 21:54:49,642 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-14 21:54:49,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3852 states. [2020-10-14 21:54:49,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3852 to 2916. [2020-10-14 21:54:49,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2916 states. [2020-10-14 21:54:49,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2916 states to 2916 states and 3815 transitions. [2020-10-14 21:54:49,728 INFO L78 Accepts]: Start accepts. Automaton has 2916 states and 3815 transitions. Word has length 243 [2020-10-14 21:54:49,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:54:49,728 INFO L479 AbstractCegarLoop]: Abstraction has 2916 states and 3815 transitions. [2020-10-14 21:54:49,728 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:54:49,729 INFO L276 IsEmpty]: Start isEmpty. Operand 2916 states and 3815 transitions. [2020-10-14 21:54:49,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 376 [2020-10-14 21:54:49,735 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:54:49,735 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:54:49,736 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 21:54:49,736 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:54:49,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:54:49,736 INFO L82 PathProgramCache]: Analyzing trace with hash 1570613895, now seen corresponding path program 1 times [2020-10-14 21:54:49,737 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:54:49,737 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [239291586] [2020-10-14 21:54:49,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:54:49,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:54:49,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:50,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:51,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:54,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:54:54,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 387 [2020-10-14 21:54:54,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:54:54,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5058 [2020-10-14 21:54:54,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:54:54,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:54:54,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:54:54,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:54:54,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-14 21:54:54,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 21:54:54,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:54:54,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:54:54,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:55,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:54:55,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:54:55,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:54:55,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 21:54:55,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:54:55,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:54:55,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:54:55,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:54:55,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:54:55,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:54:55,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:54:55,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:54:55,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:55,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:54:55,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 21:54:55,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:54:55,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 294 [2020-10-14 21:54:55,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:54:55,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:54:55,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:54:55,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:54:55,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-14 21:54:55,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:54:55,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-14 21:54:55,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:54:55,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:55,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:54:55,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-14 21:54:55,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:54:55,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-14 21:54:55,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:54:55,913 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:54:55,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:54:55,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-14 21:54:55,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:54:55,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:54:56,595 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 116 proven. 105 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 21:54:56,596 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [239291586] [2020-10-14 21:54:56,596 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:54:56,597 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:54:56,597 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995417114] [2020-10-14 21:54:56,598 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:54:56,598 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:54:56,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:54:56,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:54:56,599 INFO L87 Difference]: Start difference. First operand 2916 states and 3815 transitions. Second operand 7 states. [2020-10-14 21:55:05,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:55:05,055 INFO L93 Difference]: Finished difference Result 6173 states and 8031 transitions. [2020-10-14 21:55:05,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 21:55:05,063 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 375 [2020-10-14 21:55:05,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:55:05,079 INFO L225 Difference]: With dead ends: 6173 [2020-10-14 21:55:05,079 INFO L226 Difference]: Without dead ends: 3263 [2020-10-14 21:55:05,087 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-14 21:55:05,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3263 states. [2020-10-14 21:55:05,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3263 to 3237. [2020-10-14 21:55:05,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3237 states. [2020-10-14 21:55:05,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3237 states to 3237 states and 4153 transitions. [2020-10-14 21:55:05,183 INFO L78 Accepts]: Start accepts. Automaton has 3237 states and 4153 transitions. Word has length 375 [2020-10-14 21:55:05,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:55:05,184 INFO L479 AbstractCegarLoop]: Abstraction has 3237 states and 4153 transitions. [2020-10-14 21:55:05,184 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:55:05,184 INFO L276 IsEmpty]: Start isEmpty. Operand 3237 states and 4153 transitions. [2020-10-14 21:55:05,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 450 [2020-10-14 21:55:05,193 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:55:05,193 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:55:05,194 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 21:55:05,194 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:55:05,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:55:05,194 INFO L82 PathProgramCache]: Analyzing trace with hash -887040848, now seen corresponding path program 1 times [2020-10-14 21:55:05,195 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:55:05,195 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2271174] [2020-10-14 21:55:05,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:55:05,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:55:05,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:05,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:06,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:06,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:55:06,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 461 [2020-10-14 21:55:06,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:55:06,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1545 [2020-10-14 21:55:06,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:55:06,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:55:06,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:55:06,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-14 21:55:06,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 176 [2020-10-14 21:55:06,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:55:07,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:55:07,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:55:07,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:07,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:55:07,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:55:07,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:55:07,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:55:07,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:55:07,030 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:55:07,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:55:07,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:55:07,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:55:07,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:55:07,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:55:07,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:55:07,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:07,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:55:07,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-14 21:55:07,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:55:07,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 294 [2020-10-14 21:55:07,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:55:07,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:55:07,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:55:07,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:55:07,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-14 21:55:07,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:55:07,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 21:55:07,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:55:07,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:07,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:07,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:55:07,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-14 21:55:07,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:55:07,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 195 [2020-10-14 21:55:07,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:55:07,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:55:07,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:55:07,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:55:07,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-14 21:55:07,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:55:07,877 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 114 proven. 4 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2020-10-14 21:55:07,877 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2271174] [2020-10-14 21:55:07,878 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:55:07,878 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:55:07,878 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225335877] [2020-10-14 21:55:07,879 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:55:07,879 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:55:07,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:55:07,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:55:07,880 INFO L87 Difference]: Start difference. First operand 3237 states and 4153 transitions. Second operand 7 states. [2020-10-14 21:55:26,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:55:26,072 INFO L93 Difference]: Finished difference Result 10833 states and 15396 transitions. [2020-10-14 21:55:26,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 21:55:26,074 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 449 [2020-10-14 21:55:26,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:55:26,111 INFO L225 Difference]: With dead ends: 10833 [2020-10-14 21:55:26,112 INFO L226 Difference]: Without dead ends: 7909 [2020-10-14 21:55:26,122 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-14 21:55:26,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7909 states. [2020-10-14 21:55:26,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7909 to 6984. [2020-10-14 21:55:26,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6984 states. [2020-10-14 21:55:26,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6984 states to 6984 states and 8923 transitions. [2020-10-14 21:55:26,301 INFO L78 Accepts]: Start accepts. Automaton has 6984 states and 8923 transitions. Word has length 449 [2020-10-14 21:55:26,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:55:26,302 INFO L479 AbstractCegarLoop]: Abstraction has 6984 states and 8923 transitions. [2020-10-14 21:55:26,302 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:55:26,303 INFO L276 IsEmpty]: Start isEmpty. Operand 6984 states and 8923 transitions. [2020-10-14 21:55:26,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 539 [2020-10-14 21:55:26,324 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:55:26,324 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2020-10-14 21:55:26,325 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 21:55:26,325 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:55:26,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:55:26,325 INFO L82 PathProgramCache]: Analyzing trace with hash -1444443486, now seen corresponding path program 1 times [2020-10-14 21:55:26,326 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:55:26,326 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1986099962] [2020-10-14 21:55:26,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:55:26,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:55:26,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:26,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:26,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:27,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:28,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:31,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:55:31,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 554 [2020-10-14 21:55:31,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 21:55:31,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-14 21:55:31,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:55:31,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:55:31,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:55:31,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-14 21:55:31,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 285 [2020-10-14 21:55:31,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:55:31,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:55:31,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:55:31,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:31,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:55:31,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:55:31,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:55:31,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:55:31,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:55:31,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:55:31,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:55:31,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:55:31,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:55:31,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:55:31,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:55:31,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:55:31,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:31,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:55:31,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 21:55:31,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:55:31,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-14 21:55:31,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:55:31,610 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:55:31,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:55:31,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:55:31,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 21:55:31,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:55:31,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-14 21:55:31,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:55:31,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:31,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:32,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:55:32,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 21:55:32,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:55:32,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 436 [2020-10-14 21:55:32,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:55:32,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:55:32,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:55:32,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:55:32,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-14 21:55:32,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:55:32,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2020-10-14 21:55:32,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:55:32,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:32,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:55:32,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 21:55:32,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:55:32,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-14 21:55:32,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:55:32,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:55:32,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:55:32,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:55:32,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 21:55:32,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:55:32,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2020-10-14 21:55:32,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:55:32,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:32,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:55:32,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-14 21:55:32,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:55:32,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-14 21:55:32,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:55:32,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:55:32,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:55:32,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-14 21:55:32,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:55:32,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:55:32,562 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 409 proven. 176 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2020-10-14 21:55:32,563 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1986099962] [2020-10-14 21:55:32,563 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:55:32,563 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:55:32,563 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951382278] [2020-10-14 21:55:32,564 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:55:32,564 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:55:32,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:55:32,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:55:32,565 INFO L87 Difference]: Start difference. First operand 6984 states and 8923 transitions. Second operand 7 states. [2020-10-14 21:55:45,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:55:45,608 INFO L93 Difference]: Finished difference Result 17235 states and 23716 transitions. [2020-10-14 21:55:45,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:55:45,610 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 538 [2020-10-14 21:55:45,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:55:45,662 INFO L225 Difference]: With dead ends: 17235 [2020-10-14 21:55:45,663 INFO L226 Difference]: Without dead ends: 10564 [2020-10-14 21:55:45,683 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:55:45,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10564 states. [2020-10-14 21:55:46,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10564 to 10448. [2020-10-14 21:55:46,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10448 states. [2020-10-14 21:55:46,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10448 states to 10448 states and 13104 transitions. [2020-10-14 21:55:46,051 INFO L78 Accepts]: Start accepts. Automaton has 10448 states and 13104 transitions. Word has length 538 [2020-10-14 21:55:46,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:55:46,052 INFO L479 AbstractCegarLoop]: Abstraction has 10448 states and 13104 transitions. [2020-10-14 21:55:46,053 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:55:46,053 INFO L276 IsEmpty]: Start isEmpty. Operand 10448 states and 13104 transitions. [2020-10-14 21:55:46,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 605 [2020-10-14 21:55:46,079 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:55:46,079 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:55:46,080 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 21:55:46,080 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:55:46,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:55:46,080 INFO L82 PathProgramCache]: Analyzing trace with hash -2048277984, now seen corresponding path program 1 times [2020-10-14 21:55:46,081 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:55:46,081 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [465070204] [2020-10-14 21:55:46,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:55:46,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:55:46,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:46,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:48,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:55:48,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 618 [2020-10-14 21:55:48,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:55:48,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2260 [2020-10-14 21:55:48,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:55:48,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:55:48,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:55:48,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 397 [2020-10-14 21:55:48,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-14 21:55:48,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:55:48,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:55:48,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:55:48,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:48,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:55:48,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:55:48,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:55:48,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:55:48,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:55:48,579 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:55:48,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:55:48,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:55:48,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:55:48,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:55:48,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:55:48,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:55:48,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:48,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:55:48,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-14 21:55:48,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:55:48,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-14 21:55:48,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:55:48,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:55:48,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:55:48,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:55:48,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:55:48,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:55:48,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 21:55:48,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:55:48,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:48,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:55:48,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 21:55:48,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:55:48,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-14 21:55:48,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:55:48,791 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:55:48,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:55:48,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:55:48,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 21:55:48,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:55:48,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-10-14 21:55:48,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:55:48,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:48,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:55:48,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-14 21:55:48,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:55:48,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-14 21:55:48,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:55:48,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:55:48,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:55:48,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:55:48,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 155 [2020-10-14 21:55:48,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:55:49,244 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 438 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-14 21:55:49,245 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [465070204] [2020-10-14 21:55:49,245 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:55:49,246 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:55:49,246 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358232327] [2020-10-14 21:55:49,249 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:55:49,249 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:55:49,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:55:49,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:55:49,250 INFO L87 Difference]: Start difference. First operand 10448 states and 13104 transitions. Second operand 7 states. [2020-10-14 21:55:59,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:55:59,057 INFO L93 Difference]: Finished difference Result 19671 states and 25812 transitions. [2020-10-14 21:55:59,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 21:55:59,059 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 604 [2020-10-14 21:55:59,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:55:59,099 INFO L225 Difference]: With dead ends: 19671 [2020-10-14 21:55:59,099 INFO L226 Difference]: Without dead ends: 12635 [2020-10-14 21:55:59,116 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:55:59,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12635 states. [2020-10-14 21:55:59,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12635 to 12017. [2020-10-14 21:55:59,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12017 states. [2020-10-14 21:55:59,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12017 states to 12017 states and 15470 transitions. [2020-10-14 21:55:59,364 INFO L78 Accepts]: Start accepts. Automaton has 12017 states and 15470 transitions. Word has length 604 [2020-10-14 21:55:59,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:55:59,366 INFO L479 AbstractCegarLoop]: Abstraction has 12017 states and 15470 transitions. [2020-10-14 21:55:59,366 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:55:59,366 INFO L276 IsEmpty]: Start isEmpty. Operand 12017 states and 15470 transitions. [2020-10-14 21:55:59,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 648 [2020-10-14 21:55:59,408 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:55:59,408 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:55:59,409 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 21:55:59,409 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:55:59,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:55:59,410 INFO L82 PathProgramCache]: Analyzing trace with hash 1572925911, now seen corresponding path program 1 times [2020-10-14 21:55:59,410 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:55:59,411 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1245454518] [2020-10-14 21:55:59,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:55:59,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:55:59,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:59,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:00,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:00,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:04,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:56:04,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 663 [2020-10-14 21:56:04,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 21:56:04,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-14 21:56:04,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:56:04,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:56:04,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 21:56:04,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 397 [2020-10-14 21:56:04,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 171 [2020-10-14 21:56:04,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:56:04,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:56:04,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:56:04,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:04,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:56:04,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:56:04,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:56:04,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:56:04,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:56:04,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:56:04,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:56:04,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:56:04,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:56:04,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:56:04,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:56:04,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:56:04,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:04,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:56:04,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-14 21:56:04,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:56:04,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-14 21:56:04,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:56:04,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:56:04,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:56:04,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:56:04,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:56:04,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:56:04,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 21:56:04,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:56:04,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:04,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:56:04,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 21:56:04,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:56:04,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-14 21:56:04,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:56:04,969 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:56:04,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:56:04,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:56:04,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 21:56:04,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:56:04,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-10-14 21:56:05,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:56:05,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:05,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:05,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:56:05,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-14 21:56:05,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:56:05,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 243 [2020-10-14 21:56:05,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:56:05,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:56:05,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:56:05,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:56:05,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-14 21:56:05,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:56:05,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 492 [2020-10-14 21:56:05,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:56:05,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:05,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:05,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:56:05,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-14 21:56:05,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:56:05,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 344 [2020-10-14 21:56:05,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:56:05,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:56:05,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:56:05,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:56:05,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-14 21:56:05,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:56:06,065 INFO L134 CoverageAnalysis]: Checked inductivity of 830 backedges. 621 proven. 96 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2020-10-14 21:56:06,067 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1245454518] [2020-10-14 21:56:06,067 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:56:06,068 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 21:56:06,068 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206474398] [2020-10-14 21:56:06,069 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 21:56:06,069 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:56:06,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 21:56:06,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-14 21:56:06,070 INFO L87 Difference]: Start difference. First operand 12017 states and 15470 transitions. Second operand 10 states. [2020-10-14 21:56:21,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:56:21,754 INFO L93 Difference]: Finished difference Result 22345 states and 30921 transitions. [2020-10-14 21:56:21,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-14 21:56:21,756 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 647 [2020-10-14 21:56:21,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:56:21,821 INFO L225 Difference]: With dead ends: 22345 [2020-10-14 21:56:21,821 INFO L226 Difference]: Without dead ends: 13431 [2020-10-14 21:56:21,844 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=230, Invalid=826, Unknown=0, NotChecked=0, Total=1056 [2020-10-14 21:56:21,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13431 states. [2020-10-14 21:56:22,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13431 to 12089. [2020-10-14 21:56:22,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12089 states. [2020-10-14 21:56:22,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12089 states to 12089 states and 15452 transitions. [2020-10-14 21:56:22,143 INFO L78 Accepts]: Start accepts. Automaton has 12089 states and 15452 transitions. Word has length 647 [2020-10-14 21:56:22,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:56:22,144 INFO L479 AbstractCegarLoop]: Abstraction has 12089 states and 15452 transitions. [2020-10-14 21:56:22,144 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 21:56:22,144 INFO L276 IsEmpty]: Start isEmpty. Operand 12089 states and 15452 transitions. [2020-10-14 21:56:22,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 661 [2020-10-14 21:56:22,160 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:56:22,163 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, 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, 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, 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, 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, 1] [2020-10-14 21:56:22,163 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 21:56:22,163 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:56:22,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:56:22,164 INFO L82 PathProgramCache]: Analyzing trace with hash 573566908, now seen corresponding path program 1 times [2020-10-14 21:56:22,164 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:56:22,164 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1493631224] [2020-10-14 21:56:22,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:56:22,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:56:22,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:22,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:23,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:24,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:27,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:56:27,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 674 [2020-10-14 21:56:27,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 21:56:27,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4773 [2020-10-14 21:56:27,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:56:27,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:56:27,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:56:27,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 397 [2020-10-14 21:56:27,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 276 [2020-10-14 21:56:27,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:56:27,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:56:27,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:56:27,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:27,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:56:27,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:56:27,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:56:27,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 21:56:27,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:56:27,201 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:56:27,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:56:27,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:56:27,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:56:27,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:56:27,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:56:27,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:56:27,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:27,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:56:27,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-14 21:56:27,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:56:27,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-14 21:56:27,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:56:27,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:56:27,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:56:27,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:56:27,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:56:27,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:56:27,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 21:56:27,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:56:27,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:27,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:56:27,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 21:56:27,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:56:27,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-14 21:56:27,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:56:27,516 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:56:27,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:56:27,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:56:27,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 21:56:27,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:56:27,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-10-14 21:56:27,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:56:27,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:27,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:56:27,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 211 [2020-10-14 21:56:27,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:56:27,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-10-14 21:56:27,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:56:27,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:56:27,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:56:27,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:56:27,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 211 [2020-10-14 21:56:27,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:56:28,062 INFO L134 CoverageAnalysis]: Checked inductivity of 604 backedges. 431 proven. 59 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2020-10-14 21:56:28,062 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1493631224] [2020-10-14 21:56:28,062 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:56:28,062 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 21:56:28,063 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357055451] [2020-10-14 21:56:28,063 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 21:56:28,063 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:56:28,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 21:56:28,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:56:28,064 INFO L87 Difference]: Start difference. First operand 12089 states and 15452 transitions. Second operand 6 states. [2020-10-14 21:56:37,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:56:37,983 INFO L93 Difference]: Finished difference Result 30046 states and 41840 transitions. [2020-10-14 21:56:37,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 21:56:37,985 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 660 [2020-10-14 21:56:37,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:56:38,061 INFO L225 Difference]: With dead ends: 30046 [2020-10-14 21:56:38,061 INFO L226 Difference]: Without dead ends: 20143 [2020-10-14 21:56:38,091 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 21:56:38,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20143 states. [2020-10-14 21:56:38,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20143 to 19639. [2020-10-14 21:56:38,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19639 states. [2020-10-14 21:56:38,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19639 states to 19639 states and 25176 transitions. [2020-10-14 21:56:38,627 INFO L78 Accepts]: Start accepts. Automaton has 19639 states and 25176 transitions. Word has length 660 [2020-10-14 21:56:38,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:56:38,628 INFO L479 AbstractCegarLoop]: Abstraction has 19639 states and 25176 transitions. [2020-10-14 21:56:38,628 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 21:56:38,628 INFO L276 IsEmpty]: Start isEmpty. Operand 19639 states and 25176 transitions. [2020-10-14 21:56:38,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 698 [2020-10-14 21:56:38,653 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:56:38,653 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:56:38,654 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 21:56:38,654 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:56:38,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:56:38,655 INFO L82 PathProgramCache]: Analyzing trace with hash -1607328686, now seen corresponding path program 1 times [2020-10-14 21:56:38,655 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:56:38,655 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1540665896] [2020-10-14 21:56:38,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:56:38,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:56:38,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:39,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:39,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:40,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:41,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:42,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:43,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:56:43,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 713 [2020-10-14 21:56:43,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 21:56:43,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5126 [2020-10-14 21:56:43,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:56:43,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:56:43,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:56:43,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 548 [2020-10-14 21:56:43,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 164 [2020-10-14 21:56:43,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:56:44,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:56:44,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:56:44,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:44,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:56:44,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:56:44,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:56:44,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 21:56:44,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:56:44,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:56:44,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:56:44,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:56:44,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:56:44,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:56:44,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:56:44,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:56:44,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:44,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:56:44,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-14 21:56:44,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:56:44,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-14 21:56:44,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:56:44,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:56:44,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:56:44,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:56:44,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:56:44,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:56:44,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 21:56:44,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:56:44,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:44,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:56:44,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 21:56:44,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:56:44,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-14 21:56:44,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:56:44,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:56:44,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:56:44,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:56:44,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:56:44,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:56:44,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-10-14 21:56:44,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:56:44,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:44,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:56:44,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-14 21:56:44,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:56:44,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-14 21:56:44,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:56:44,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:56:44,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:56:44,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:56:44,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-14 21:56:44,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:56:44,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 542 [2020-10-14 21:56:44,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:56:44,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:44,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:44,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:56:44,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-14 21:56:44,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:56:44,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-14 21:56:44,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:56:44,972 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:56:44,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:56:44,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:56:44,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-14 21:56:44,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:56:45,206 INFO L134 CoverageAnalysis]: Checked inductivity of 897 backedges. 465 proven. 60 refuted. 0 times theorem prover too weak. 372 trivial. 0 not checked. [2020-10-14 21:56:45,206 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1540665896] [2020-10-14 21:56:45,206 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:56:45,207 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 21:56:45,207 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132826762] [2020-10-14 21:56:45,208 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 21:56:45,208 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:56:45,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 21:56:45,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 21:56:45,208 INFO L87 Difference]: Start difference. First operand 19639 states and 25176 transitions. Second operand 8 states. [2020-10-14 21:56:56,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:56:56,842 INFO L93 Difference]: Finished difference Result 39379 states and 50941 transitions. [2020-10-14 21:56:56,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 21:56:56,844 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 697 [2020-10-14 21:56:56,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:56:56,900 INFO L225 Difference]: With dead ends: 39379 [2020-10-14 21:56:56,900 INFO L226 Difference]: Without dead ends: 20053 [2020-10-14 21:56:56,934 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-14 21:56:56,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20053 states. [2020-10-14 21:56:57,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20053 to 19732. [2020-10-14 21:56:57,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19732 states. [2020-10-14 21:56:57,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19732 states to 19732 states and 24547 transitions. [2020-10-14 21:56:57,484 INFO L78 Accepts]: Start accepts. Automaton has 19732 states and 24547 transitions. Word has length 697 [2020-10-14 21:56:57,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:56:57,485 INFO L479 AbstractCegarLoop]: Abstraction has 19732 states and 24547 transitions. [2020-10-14 21:56:57,485 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 21:56:57,486 INFO L276 IsEmpty]: Start isEmpty. Operand 19732 states and 24547 transitions. [2020-10-14 21:56:57,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 717 [2020-10-14 21:56:57,519 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:56:57,522 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, 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, 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, 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, 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, 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, 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] [2020-10-14 21:56:57,522 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 21:56:57,523 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:56:57,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:56:57,523 INFO L82 PathProgramCache]: Analyzing trace with hash -839889956, now seen corresponding path program 1 times [2020-10-14 21:56:57,524 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:56:57,524 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2140299250] [2020-10-14 21:56:57,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:56:57,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:56:57,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:58,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:58,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:58,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:02,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:02,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:57:02,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 730 [2020-10-14 21:57:02,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 21:57:02,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-14 21:57:02,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:57:02,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:57:02,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:57:02,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-14 21:57:02,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 280 [2020-10-14 21:57:02,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:57:02,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:57:02,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:57:02,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:02,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:57:02,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:57:02,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:57:02,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 21:57:02,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:57:02,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:57:02,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:57:02,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:57:02,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:57:02,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:57:02,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:57:02,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:57:02,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:03,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:57:03,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-14 21:57:03,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:57:03,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-14 21:57:03,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:57:03,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:57:03,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:57:03,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:57:03,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-14 21:57:03,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:57:03,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 21:57:03,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:57:03,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:03,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:03,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:57:03,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 280 [2020-10-14 21:57:03,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:57:03,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 401 [2020-10-14 21:57:03,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:57:03,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:57:03,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:57:03,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:57:03,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 280 [2020-10-14 21:57:03,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:57:03,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 561 [2020-10-14 21:57:03,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:57:03,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:03,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:57:03,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-14 21:57:03,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:57:03,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-14 21:57:03,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:57:03,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:57:03,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:57:03,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-14 21:57:03,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:57:03,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:57:04,850 INFO L134 CoverageAnalysis]: Checked inductivity of 644 backedges. 449 proven. 97 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2020-10-14 21:57:04,850 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2140299250] [2020-10-14 21:57:04,851 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:57:04,851 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:57:04,851 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955021499] [2020-10-14 21:57:04,852 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:57:04,852 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:57:04,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:57:04,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:57:04,853 INFO L87 Difference]: Start difference. First operand 19732 states and 24547 transitions. Second operand 7 states. [2020-10-14 21:57:18,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:57:18,903 INFO L93 Difference]: Finished difference Result 41718 states and 52087 transitions. [2020-10-14 21:57:18,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 21:57:18,905 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 716 [2020-10-14 21:57:18,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:57:18,953 INFO L225 Difference]: With dead ends: 41718 [2020-10-14 21:57:18,953 INFO L226 Difference]: Without dead ends: 21980 [2020-10-14 21:57:18,980 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-14 21:57:18,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21980 states. [2020-10-14 21:57:19,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21980 to 21653. [2020-10-14 21:57:19,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21653 states. [2020-10-14 21:57:19,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21653 states to 21653 states and 26866 transitions. [2020-10-14 21:57:19,302 INFO L78 Accepts]: Start accepts. Automaton has 21653 states and 26866 transitions. Word has length 716 [2020-10-14 21:57:19,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:57:19,303 INFO L479 AbstractCegarLoop]: Abstraction has 21653 states and 26866 transitions. [2020-10-14 21:57:19,303 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:57:19,303 INFO L276 IsEmpty]: Start isEmpty. Operand 21653 states and 26866 transitions. [2020-10-14 21:57:19,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 729 [2020-10-14 21:57:19,330 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:57:19,330 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, 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, 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, 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, 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, 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, 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] [2020-10-14 21:57:19,331 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 21:57:19,331 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:57:19,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:57:19,331 INFO L82 PathProgramCache]: Analyzing trace with hash -1506752348, now seen corresponding path program 1 times [2020-10-14 21:57:19,331 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:57:19,332 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1885920201] [2020-10-14 21:57:19,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:57:19,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:57:19,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:19,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:20,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:20,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:21,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:24,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:57:24,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 742 [2020-10-14 21:57:24,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 21:57:24,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-14 21:57:24,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:57:24,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:57:24,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:57:24,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 296 [2020-10-14 21:57:24,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 281 [2020-10-14 21:57:24,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:57:24,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:57:24,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:57:24,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:24,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:57:24,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:57:24,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:57:24,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 21:57:24,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:57:24,568 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:57:24,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:57:24,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:57:24,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:57:24,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:57:24,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:57:24,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:57:24,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:24,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:57:24,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 21:57:24,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:57:24,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-14 21:57:24,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:57:24,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:57:24,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:57:24,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:57:24,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 281 [2020-10-14 21:57:24,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:57:24,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-14 21:57:24,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:57:24,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:25,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:25,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:57:25,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 280 [2020-10-14 21:57:25,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:57:25,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 430 [2020-10-14 21:57:25,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:57:25,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:57:25,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:57:25,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:57:25,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 280 [2020-10-14 21:57:25,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:57:25,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 573 [2020-10-14 21:57:25,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:57:25,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:25,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:57:25,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-14 21:57:25,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:57:25,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-14 21:57:25,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:57:25,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:57:25,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:57:25,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-14 21:57:25,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:57:25,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:57:25,901 INFO L134 CoverageAnalysis]: Checked inductivity of 647 backedges. 452 proven. 97 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2020-10-14 21:57:25,901 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1885920201] [2020-10-14 21:57:25,901 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:57:25,901 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:57:25,901 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778810993] [2020-10-14 21:57:25,902 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:57:25,902 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:57:25,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:57:25,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:57:25,903 INFO L87 Difference]: Start difference. First operand 21653 states and 26866 transitions. Second operand 7 states. [2020-10-14 21:57:41,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:57:41,092 INFO L93 Difference]: Finished difference Result 46163 states and 56533 transitions. [2020-10-14 21:57:41,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:57:41,094 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 728 [2020-10-14 21:57:41,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:57:41,154 INFO L225 Difference]: With dead ends: 46163 [2020-10-14 21:57:41,154 INFO L226 Difference]: Without dead ends: 24823 [2020-10-14 21:57:41,189 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:57:41,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24823 states. [2020-10-14 21:57:41,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24823 to 23884. [2020-10-14 21:57:41,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23884 states. [2020-10-14 21:57:41,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23884 states to 23884 states and 28609 transitions. [2020-10-14 21:57:41,529 INFO L78 Accepts]: Start accepts. Automaton has 23884 states and 28609 transitions. Word has length 728 [2020-10-14 21:57:41,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:57:41,530 INFO L479 AbstractCegarLoop]: Abstraction has 23884 states and 28609 transitions. [2020-10-14 21:57:41,530 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:57:41,530 INFO L276 IsEmpty]: Start isEmpty. Operand 23884 states and 28609 transitions. [2020-10-14 21:57:41,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 771 [2020-10-14 21:57:41,553 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:57:41,553 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:57:41,553 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 21:57:41,553 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:57:41,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:57:41,554 INFO L82 PathProgramCache]: Analyzing trace with hash -2074585533, now seen corresponding path program 1 times [2020-10-14 21:57:41,554 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:57:41,554 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [701320586] [2020-10-14 21:57:41,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:57:41,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:57:41,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:42,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:42,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking...