/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --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/Problem04_label39.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 01:06:41,873 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 01:06:41,876 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 01:06:41,916 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 01:06:41,916 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 01:06:41,924 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 01:06:41,926 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 01:06:41,930 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 01:06:41,932 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 01:06:41,935 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 01:06:41,936 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 01:06:41,937 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 01:06:41,937 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 01:06:41,940 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 01:06:41,943 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 01:06:41,944 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 01:06:41,946 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 01:06:41,947 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 01:06:41,948 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 01:06:41,955 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 01:06:41,957 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 01:06:41,958 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 01:06:41,959 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 01:06:41,960 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 01:06:41,970 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 01:06:41,970 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 01:06:41,970 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 01:06:41,971 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 01:06:41,972 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 01:06:41,974 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 01:06:41,975 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 01:06:41,975 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 01:06:41,976 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 01:06:41,976 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 01:06:41,978 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 01:06:41,978 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 01:06:41,978 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 01:06:41,979 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 01:06:41,979 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 01:06:41,980 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 01:06:41,981 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 01:06:41,982 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 01:06:42,021 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 01:06:42,022 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 01:06:42,024 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 01:06:42,024 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 01:06:42,024 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 01:06:42,024 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 01:06:42,025 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 01:06:42,025 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 01:06:42,025 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 01:06:42,025 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 01:06:42,027 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 01:06:42,027 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 01:06:42,027 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 01:06:42,027 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 01:06:42,028 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 01:06:42,028 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 01:06:42,028 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 01:06:42,028 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 01:06:42,028 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 01:06:42,028 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 01:06:42,029 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 01:06:42,029 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 01:06:42,029 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 01:06:42,029 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 01:06:42,029 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 01:06:42,030 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 01:06:42,030 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 01:06:42,030 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 01:06:42,030 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 01:06:42,030 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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 01:06:42,315 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 01:06:42,326 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 01:06:42,330 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 01:06:42,331 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 01:06:42,332 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 01:06:42,332 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label39.c [2020-10-14 01:06:42,385 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/659340feb/ff4f5bb1e7774ec681183c95ed671d62/FLAGa97d05d25 [2020-10-14 01:06:43,137 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 01:06:43,137 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem04_label39.c [2020-10-14 01:06:43,171 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/659340feb/ff4f5bb1e7774ec681183c95ed671d62/FLAGa97d05d25 [2020-10-14 01:06:43,662 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/659340feb/ff4f5bb1e7774ec681183c95ed671d62 [2020-10-14 01:06:43,672 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 01:06:43,674 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 01:06:43,675 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 01:06:43,675 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 01:06:43,679 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 01:06:43,680 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 01:06:43" (1/1) ... [2020-10-14 01:06:43,682 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33dfb059 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:06:43, skipping insertion in model container [2020-10-14 01:06:43,683 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 01:06:43" (1/1) ... [2020-10-14 01:06:43,691 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 01:06:43,846 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 01:06:45,743 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 01:06:45,754 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 01:06:46,478 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 01:06:46,513 INFO L208 MainTranslator]: Completed translation [2020-10-14 01:06:46,516 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:06:46 WrapperNode [2020-10-14 01:06:46,516 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 01:06:46,517 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 01:06:46,517 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 01:06:46,517 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 01:06:46,532 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:06:46" (1/1) ... [2020-10-14 01:06:46,534 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:06:46" (1/1) ... [2020-10-14 01:06:46,587 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:06:46" (1/1) ... [2020-10-14 01:06:46,587 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:06:46" (1/1) ... [2020-10-14 01:06:46,672 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:06:46" (1/1) ... [2020-10-14 01:06:46,699 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:06:46" (1/1) ... [2020-10-14 01:06:46,719 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:06:46" (1/1) ... [2020-10-14 01:06:46,742 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 01:06:46,743 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 01:06:46,743 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 01:06:46,743 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 01:06:46,744 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:06:46" (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 01:06:46,814 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 01:06:46,814 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 01:06:46,814 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 01:06:46,815 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 01:06:46,815 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 01:06:46,815 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 01:06:46,815 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 01:06:46,815 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 01:06:46,816 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 01:06:46,816 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 01:06:46,816 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 01:06:46,816 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 01:06:46,816 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 01:06:46,816 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 01:06:46,817 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 01:06:46,817 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 01:06:46,817 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 01:06:51,016 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 01:06:51,017 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 01:06:51,032 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 01:06:51 BoogieIcfgContainer [2020-10-14 01:06:51,032 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 01:06:51,036 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 01:06:51,036 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 01:06:51,039 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 01:06:51,039 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 01:06:43" (1/3) ... [2020-10-14 01:06:51,041 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51ce25f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 01:06:51, skipping insertion in model container [2020-10-14 01:06:51,041 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:06:46" (2/3) ... [2020-10-14 01:06:51,042 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51ce25f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 01:06:51, skipping insertion in model container [2020-10-14 01:06:51,042 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 01:06:51" (3/3) ... [2020-10-14 01:06:51,044 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem04_label39.c [2020-10-14 01:06:51,054 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 01:06:51,068 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 01:06:51,079 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 01:06:51,108 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 01:06:51,108 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 01:06:51,108 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 01:06:51,108 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 01:06:51,108 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 01:06:51,109 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 01:06:51,109 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 01:06:51,109 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 01:06:51,210 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states. [2020-10-14 01:06:51,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 772 [2020-10-14 01:06:51,272 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:06:51,274 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:06:51,275 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:06:51,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:06:51,283 INFO L82 PathProgramCache]: Analyzing trace with hash 731294538, now seen corresponding path program 1 times [2020-10-14 01:06:51,292 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:06:51,292 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [118213390] [2020-10-14 01:06:51,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:06:51,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:06:52,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:06:56,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:06:57,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:06:57,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 785 [2020-10-14 01:06:57,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 01:06:57,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5125 [2020-10-14 01:06:57,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:06:57,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:06:57,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 01:06:57,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 01:06:57,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 779 [2020-10-14 01:06:57,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 01:06:57,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:06:57,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:06:57,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:06:57,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:06:57,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:06:57,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:06:57,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 01:06:57,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:06:57,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:06:57,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:06:57,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:06:57,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 01:06:57,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:06:58,904 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 01:06:58,905 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [118213390] [2020-10-14 01:06:58,907 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 01:06:58,907 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 01:06:58,908 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194110240] [2020-10-14 01:06:58,913 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 01:06:58,914 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:06:58,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 01:06:58,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 01:06:58,926 INFO L87 Difference]: Start difference. First operand 906 states. Second operand 5 states. [2020-10-14 01:07:06,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:07:06,800 INFO L93 Difference]: Finished difference Result 2672 states and 5137 transitions. [2020-10-14 01:07:06,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 01:07:06,803 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 771 [2020-10-14 01:07:06,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:07:06,868 INFO L225 Difference]: With dead ends: 2672 [2020-10-14 01:07:06,868 INFO L226 Difference]: Without dead ends: 1702 [2020-10-14 01:07:06,878 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 01:07:06,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1702 states. [2020-10-14 01:07:07,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1702 to 1689. [2020-10-14 01:07:07,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1689 states. [2020-10-14 01:07:07,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1689 states to 1689 states and 3029 transitions. [2020-10-14 01:07:07,057 INFO L78 Accepts]: Start accepts. Automaton has 1689 states and 3029 transitions. Word has length 771 [2020-10-14 01:07:07,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:07:07,061 INFO L479 AbstractCegarLoop]: Abstraction has 1689 states and 3029 transitions. [2020-10-14 01:07:07,062 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 01:07:07,062 INFO L276 IsEmpty]: Start isEmpty. Operand 1689 states and 3029 transitions. [2020-10-14 01:07:07,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 780 [2020-10-14 01:07:07,090 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:07:07,091 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:07:07,092 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 01:07:07,092 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:07:07,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:07:07,092 INFO L82 PathProgramCache]: Analyzing trace with hash -1174601061, now seen corresponding path program 1 times [2020-10-14 01:07:07,093 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:07:07,093 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1784529037] [2020-10-14 01:07:07,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:07:07,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:07:07,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:07:07,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:07:12,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:07:12,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 795 [2020-10-14 01:07:12,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 01:07:12,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5103 [2020-10-14 01:07:12,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:07:12,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:07:12,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 01:07:12,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 01:07:12,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 01:07:12,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:07:12,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:07:12,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:07:12,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:07:12,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:07:12,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:07:12,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:07:12,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 01:07:12,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:07:12,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:07:12,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:07:12,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:07:12,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 01:07:12,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 01:07:12,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:07:12,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:07:12,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:07:12,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:07:12,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 01:07:12,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:07:12,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-14 01:07:12,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:07:12,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:07:12,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:07:12,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:07:12,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 01:07:12,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:07:13,217 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 01:07:13,218 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1784529037] [2020-10-14 01:07:13,218 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 01:07:13,218 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-14 01:07:13,219 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968241424] [2020-10-14 01:07:13,224 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 01:07:13,224 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:07:13,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 01:07:13,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 01:07:13,225 INFO L87 Difference]: Start difference. First operand 1689 states and 3029 transitions. Second operand 8 states. [2020-10-14 01:07:24,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:07:24,528 INFO L93 Difference]: Finished difference Result 5173 states and 9305 transitions. [2020-10-14 01:07:24,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 01:07:24,533 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 779 [2020-10-14 01:07:24,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:07:24,554 INFO L225 Difference]: With dead ends: 5173 [2020-10-14 01:07:24,555 INFO L226 Difference]: Without dead ends: 3490 [2020-10-14 01:07:24,559 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-14 01:07:24,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3490 states. [2020-10-14 01:07:24,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3490 to 3413. [2020-10-14 01:07:24,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3413 states. [2020-10-14 01:07:24,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3413 states to 3413 states and 5479 transitions. [2020-10-14 01:07:24,673 INFO L78 Accepts]: Start accepts. Automaton has 3413 states and 5479 transitions. Word has length 779 [2020-10-14 01:07:24,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:07:24,674 INFO L479 AbstractCegarLoop]: Abstraction has 3413 states and 5479 transitions. [2020-10-14 01:07:24,674 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 01:07:24,674 INFO L276 IsEmpty]: Start isEmpty. Operand 3413 states and 5479 transitions. [2020-10-14 01:07:24,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 783 [2020-10-14 01:07:24,691 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:07:24,692 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:07:24,693 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 01:07:24,693 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:07:24,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:07:24,694 INFO L82 PathProgramCache]: Analyzing trace with hash 1776279689, now seen corresponding path program 1 times [2020-10-14 01:07:24,694 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:07:24,694 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1505190192] [2020-10-14 01:07:24,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:07:24,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:07:24,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:07:26,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:07:29,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:07:29,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 798 [2020-10-14 01:07:29,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 01:07:29,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-14 01:07:29,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:07:29,815 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:07:29,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 01:07:29,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 01:07:29,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 01:07:29,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:07:29,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:07:29,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:07:29,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:07:29,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:07:29,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:07:29,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:07:29,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 01:07:29,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:07:29,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:07:29,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:07:29,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:07:29,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 01:07:29,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:07:29,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:07:29,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:07:29,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:07:30,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:07:30,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 01:07:30,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:07:30,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-14 01:07:30,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:07:30,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:07:30,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:07:30,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:07:30,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 01:07:30,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:07:30,306 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 01:07:30,307 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1505190192] [2020-10-14 01:07:30,307 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 01:07:30,307 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 01:07:30,307 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623489053] [2020-10-14 01:07:30,309 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:07:30,309 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:07:30,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:07:30,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:07:30,310 INFO L87 Difference]: Start difference. First operand 3413 states and 5479 transitions. Second operand 7 states. [2020-10-14 01:07:40,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:07:40,752 INFO L93 Difference]: Finished difference Result 10442 states and 17063 transitions. [2020-10-14 01:07:40,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 01:07:40,758 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 782 [2020-10-14 01:07:40,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:07:40,795 INFO L225 Difference]: With dead ends: 10442 [2020-10-14 01:07:40,795 INFO L226 Difference]: Without dead ends: 7035 [2020-10-14 01:07:40,804 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 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 01:07:40,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7035 states. [2020-10-14 01:07:40,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7035 to 6935. [2020-10-14 01:07:40,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6935 states. [2020-10-14 01:07:40,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6935 states to 6935 states and 10678 transitions. [2020-10-14 01:07:40,984 INFO L78 Accepts]: Start accepts. Automaton has 6935 states and 10678 transitions. Word has length 782 [2020-10-14 01:07:40,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:07:40,985 INFO L479 AbstractCegarLoop]: Abstraction has 6935 states and 10678 transitions. [2020-10-14 01:07:40,985 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:07:40,985 INFO L276 IsEmpty]: Start isEmpty. Operand 6935 states and 10678 transitions. [2020-10-14 01:07:41,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 801 [2020-10-14 01:07:41,008 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:07:41,009 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:07:41,009 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 01:07:41,009 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:07:41,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:07:41,010 INFO L82 PathProgramCache]: Analyzing trace with hash -30418770, now seen corresponding path program 1 times [2020-10-14 01:07:41,010 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:07:41,010 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1123800411] [2020-10-14 01:07:41,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:07:41,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:07:41,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:07:41,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:07:41,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:07:44,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:07:46,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:07:46,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 818 [2020-10-14 01:07:46,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 01:07:46,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5124 [2020-10-14 01:07:46,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:07:46,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:07:46,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:07:46,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 01:07:46,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 01:07:46,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:07:46,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:07:46,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:07:46,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:07:46,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:07:46,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:07:46,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:07:46,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 01:07:46,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:07:46,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:07:46,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:07:46,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:07:46,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:07:46,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:07:46,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:07:46,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:07:46,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:07:46,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:07:46,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 01:07:46,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:07:46,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 01:07:46,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:07:46,343 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:07:46,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:07:46,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:07:46,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 01:07:46,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:07:46,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 01:07:46,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:07:46,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:07:46,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:07:46,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 01:07:46,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:07:46,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 01:07:46,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:07:46,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:07:46,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:07:46,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:07:46,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 01:07:46,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:07:46,692 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 29 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 01:07:46,693 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1123800411] [2020-10-14 01:07:46,693 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:07:46,693 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 01:07:46,693 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194278619] [2020-10-14 01:07:46,695 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:07:46,695 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:07:46,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:07:46,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:07:46,696 INFO L87 Difference]: Start difference. First operand 6935 states and 10678 transitions. Second operand 7 states. [2020-10-14 01:07:58,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:07:58,091 INFO L93 Difference]: Finished difference Result 19446 states and 31658 transitions. [2020-10-14 01:07:58,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 01:07:58,094 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 800 [2020-10-14 01:07:58,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:07:58,158 INFO L225 Difference]: With dead ends: 19446 [2020-10-14 01:07:58,158 INFO L226 Difference]: Without dead ends: 12517 [2020-10-14 01:07:58,180 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 01:07:58,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12517 states. [2020-10-14 01:07:58,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12517 to 12266. [2020-10-14 01:07:58,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12266 states. [2020-10-14 01:07:58,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12266 states to 12266 states and 17432 transitions. [2020-10-14 01:07:58,514 INFO L78 Accepts]: Start accepts. Automaton has 12266 states and 17432 transitions. Word has length 800 [2020-10-14 01:07:58,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:07:58,515 INFO L479 AbstractCegarLoop]: Abstraction has 12266 states and 17432 transitions. [2020-10-14 01:07:58,515 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:07:58,515 INFO L276 IsEmpty]: Start isEmpty. Operand 12266 states and 17432 transitions. [2020-10-14 01:07:58,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 809 [2020-10-14 01:07:58,552 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:07:58,553 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:07:58,553 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 01:07:58,553 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:07:58,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:07:58,554 INFO L82 PathProgramCache]: Analyzing trace with hash 1951773311, now seen corresponding path program 1 times [2020-10-14 01:07:58,554 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:07:58,554 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [966297846] [2020-10-14 01:07:58,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:07:58,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:07:58,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:07:58,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:07:58,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:08:03,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:08:03,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 828 [2020-10-14 01:08:03,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 01:08:03,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-14 01:08:03,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:08:03,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:08:03,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:08:03,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-14 01:08:03,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 01:08:03,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:08:03,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:08:03,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:08:03,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:08:03,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:08:03,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:08:03,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:08:03,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 01:08:03,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:08:03,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:08:03,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:08:03,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:08:03,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:08:03,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:08:03,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:08:03,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:08:03,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:08:03,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:08:03,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 01:08:03,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:08:03,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 01:08:03,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:08:03,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:08:03,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:08:03,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:08:03,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:08:03,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:08:03,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 01:08:03,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:08:03,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:08:03,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:08:03,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 01:08:03,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:08:03,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 01:08:03,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:08:03,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:08:03,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:08:03,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:08:03,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-14 01:08:03,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:08:03,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-14 01:08:03,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:08:03,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:08:03,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:08:03,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 01:08:03,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:08:03,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 01:08:03,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:08:03,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:08:03,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:08:03,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:08:03,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 01:08:03,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:08:04,137 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 44 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-14 01:08:04,138 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [966297846] [2020-10-14 01:08:04,138 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:08:04,138 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 01:08:04,138 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637889992] [2020-10-14 01:08:04,139 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:08:04,139 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:08:04,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:08:04,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:08:04,140 INFO L87 Difference]: Start difference. First operand 12266 states and 17432 transitions. Second operand 7 states. [2020-10-14 01:08:18,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:08:18,724 INFO L93 Difference]: Finished difference Result 29260 states and 45589 transitions. [2020-10-14 01:08:18,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 01:08:18,725 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 808 [2020-10-14 01:08:18,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:08:18,818 INFO L225 Difference]: With dead ends: 29260 [2020-10-14 01:08:18,818 INFO L226 Difference]: Without dead ends: 17000 [2020-10-14 01:08:18,849 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 01:08:18,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17000 states. [2020-10-14 01:08:19,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17000 to 16823. [2020-10-14 01:08:19,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16823 states. [2020-10-14 01:08:19,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16823 states to 16823 states and 24128 transitions. [2020-10-14 01:08:19,342 INFO L78 Accepts]: Start accepts. Automaton has 16823 states and 24128 transitions. Word has length 808 [2020-10-14 01:08:19,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:08:19,345 INFO L479 AbstractCegarLoop]: Abstraction has 16823 states and 24128 transitions. [2020-10-14 01:08:19,345 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:08:19,345 INFO L276 IsEmpty]: Start isEmpty. Operand 16823 states and 24128 transitions. [2020-10-14 01:08:19,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 816 [2020-10-14 01:08:19,393 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:08:19,394 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:08:19,394 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 01:08:19,394 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:08:19,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:08:19,395 INFO L82 PathProgramCache]: Analyzing trace with hash 100956319, now seen corresponding path program 1 times [2020-10-14 01:08:19,395 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:08:19,395 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2074033931] [2020-10-14 01:08:19,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:08:19,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:08:19,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:08:19,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:08:19,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:08:20,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:08:23,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:08:24,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:08:24,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 835 [2020-10-14 01:08:24,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 01:08:24,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-14 01:08:24,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:08:24,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:08:24,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:08:24,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-14 01:08:24,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 01:08:24,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:08:25,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:08:25,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:08:25,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:08:25,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:08:25,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:08:25,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:08:25,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 01:08:25,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:08:25,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:08:25,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:08:25,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:08:25,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:08:25,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:08:25,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:08:25,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:08:25,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:08:25,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:08:25,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 01:08:25,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:08:25,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 01:08:25,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:08:25,555 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:08:25,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:08:25,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:08:25,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:08:25,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:08:25,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 01:08:25,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:08:25,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:08:25,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:08:25,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 01:08:25,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:08:25,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 01:08:25,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:08:25,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:08:25,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:08:25,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:08:25,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 01:08:25,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:08:25,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-14 01:08:25,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:08:25,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:08:25,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:08:25,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 01:08:25,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:08:25,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 01:08:25,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:08:25,600 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:08:25,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:08:25,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:08:25,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 01:08:25,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:08:25,840 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 58 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-14 01:08:25,840 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2074033931] [2020-10-14 01:08:25,841 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:08:25,841 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 01:08:25,841 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849158246] [2020-10-14 01:08:25,842 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:08:25,842 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:08:25,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:08:25,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:08:25,843 INFO L87 Difference]: Start difference. First operand 16823 states and 24128 transitions. Second operand 7 states. [2020-10-14 01:08:40,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:08:40,639 INFO L93 Difference]: Finished difference Result 45353 states and 72385 transitions. [2020-10-14 01:08:40,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 01:08:40,640 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 815 [2020-10-14 01:08:40,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:08:40,772 INFO L225 Difference]: With dead ends: 45353 [2020-10-14 01:08:40,772 INFO L226 Difference]: Without dead ends: 29366 [2020-10-14 01:08:40,822 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 01:08:40,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29366 states. [2020-10-14 01:08:41,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29366 to 28991. [2020-10-14 01:08:41,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28991 states. [2020-10-14 01:08:41,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28991 states to 28991 states and 40093 transitions. [2020-10-14 01:08:41,550 INFO L78 Accepts]: Start accepts. Automaton has 28991 states and 40093 transitions. Word has length 815 [2020-10-14 01:08:41,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:08:41,550 INFO L479 AbstractCegarLoop]: Abstraction has 28991 states and 40093 transitions. [2020-10-14 01:08:41,550 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:08:41,551 INFO L276 IsEmpty]: Start isEmpty. Operand 28991 states and 40093 transitions. [2020-10-14 01:08:41,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 818 [2020-10-14 01:08:41,622 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:08:41,623 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:08:41,623 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 01:08:41,623 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:08:41,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:08:41,624 INFO L82 PathProgramCache]: Analyzing trace with hash 1340779624, now seen corresponding path program 1 times [2020-10-14 01:08:41,624 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:08:41,624 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1195501864] [2020-10-14 01:08:41,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:08:41,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:08:41,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:08:41,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:08:44,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:08:46,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:08:46,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 835 [2020-10-14 01:08:46,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 01:08:46,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5144 [2020-10-14 01:08:46,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:08:46,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:08:46,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:08:46,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-14 01:08:46,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 01:08:46,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:08:46,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:08:46,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:08:46,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:08:46,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:08:46,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:08:46,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:08:46,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 01:08:46,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:08:46,955 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:08:46,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:08:46,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:08:46,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:08:46,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:08:46,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:08:46,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:08:46,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:08:46,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:08:46,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-14 01:08:46,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:08:46,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 01:08:46,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:08:46,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:08:46,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:08:46,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:08:46,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 01:08:46,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:08:47,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-14 01:08:47,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:08:47,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:08:47,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:08:47,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 01:08:47,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:08:47,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 01:08:47,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:08:47,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:08:47,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:08:47,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:08:47,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 01:08:47,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:08:47,261 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 57 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 01:08:47,262 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1195501864] [2020-10-14 01:08:47,262 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:08:47,262 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 01:08:47,262 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560716369] [2020-10-14 01:08:47,263 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:08:47,264 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:08:47,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:08:47,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:08:47,264 INFO L87 Difference]: Start difference. First operand 28991 states and 40093 transitions. Second operand 7 states. [2020-10-14 01:08:58,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:08:58,724 INFO L93 Difference]: Finished difference Result 69985 states and 101712 transitions. [2020-10-14 01:08:58,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 01:08:58,725 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 817 [2020-10-14 01:08:58,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:08:58,864 INFO L225 Difference]: With dead ends: 69985 [2020-10-14 01:08:58,864 INFO L226 Difference]: Without dead ends: 41004 [2020-10-14 01:08:58,918 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 01:08:58,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41004 states. [2020-10-14 01:08:59,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41004 to 40934. [2020-10-14 01:08:59,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40934 states. [2020-10-14 01:08:59,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40934 states to 40934 states and 54947 transitions. [2020-10-14 01:08:59,735 INFO L78 Accepts]: Start accepts. Automaton has 40934 states and 54947 transitions. Word has length 817 [2020-10-14 01:08:59,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:08:59,735 INFO L479 AbstractCegarLoop]: Abstraction has 40934 states and 54947 transitions. [2020-10-14 01:08:59,735 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:08:59,736 INFO L276 IsEmpty]: Start isEmpty. Operand 40934 states and 54947 transitions. [2020-10-14 01:08:59,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 919 [2020-10-14 01:08:59,822 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:08:59,823 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:08:59,824 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 01:08:59,824 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:08:59,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:08:59,825 INFO L82 PathProgramCache]: Analyzing trace with hash 1409461339, now seen corresponding path program 1 times [2020-10-14 01:08:59,825 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:08:59,825 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [8348116] [2020-10-14 01:08:59,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:08:59,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:08:59,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:09:00,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:09:00,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:09:03,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:09:04,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:09:04,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 938 [2020-10-14 01:09:04,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 01:09:04,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5074 [2020-10-14 01:09:04,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:09:04,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:09:04,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:09:04,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-14 01:09:04,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-14 01:09:04,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:09:05,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:09:05,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:09:05,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:09:05,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:09:05,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:09:05,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:09:05,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 01:09:05,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:09:05,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:09:05,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:09:05,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:09:05,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:09:05,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:09:05,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:09:05,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:09:05,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:09:05,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:09:05,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 01:09:05,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:09:05,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 01:09:05,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:09:05,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:09:05,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:09:05,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:09:05,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:09:05,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:09:05,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-14 01:09:05,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:09:05,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:09:05,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:09:05,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-14 01:09:05,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:09:05,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-14 01:09:05,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:09:05,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:09:05,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:09:05,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:09:05,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-14 01:09:05,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:09:05,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-14 01:09:05,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:09:05,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:09:05,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:09:05,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 01:09:05,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:09:05,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-14 01:09:05,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:09:05,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:09:05,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:09:05,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:09:05,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 01:09:05,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:09:05,951 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 204 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-14 01:09:05,951 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [8348116] [2020-10-14 01:09:05,952 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:09:05,952 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 01:09:05,952 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005154590] [2020-10-14 01:09:05,954 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:09:05,954 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:09:05,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:09:05,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:09:05,955 INFO L87 Difference]: Start difference. First operand 40934 states and 54947 transitions. Second operand 7 states. [2020-10-14 01:09:06,175 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-14 01:09:15,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:09:15,974 INFO L93 Difference]: Finished difference Result 82255 states and 111867 transitions. [2020-10-14 01:09:15,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 01:09:15,974 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 918 [2020-10-14 01:09:15,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:09:16,139 INFO L225 Difference]: With dead ends: 82255 [2020-10-14 01:09:16,140 INFO L226 Difference]: Without dead ends: 41327 [2020-10-14 01:09:16,208 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 01:09:16,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41327 states. [2020-10-14 01:09:16,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41327 to 41135. [2020-10-14 01:09:16,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41135 states. [2020-10-14 01:09:16,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41135 states to 41135 states and 53402 transitions. [2020-10-14 01:09:16,965 INFO L78 Accepts]: Start accepts. Automaton has 41135 states and 53402 transitions. Word has length 918 [2020-10-14 01:09:16,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:09:16,966 INFO L479 AbstractCegarLoop]: Abstraction has 41135 states and 53402 transitions. [2020-10-14 01:09:16,966 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:09:16,966 INFO L276 IsEmpty]: Start isEmpty. Operand 41135 states and 53402 transitions. [2020-10-14 01:09:17,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 989 [2020-10-14 01:09:17,047 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:09:17,048 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:09:17,048 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 01:09:17,049 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:09:17,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:09:17,049 INFO L82 PathProgramCache]: Analyzing trace with hash 689473885, now seen corresponding path program 1 times [2020-10-14 01:09:17,049 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:09:17,050 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1720194036] [2020-10-14 01:09:17,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:09:17,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:09:17,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:09:17,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:09:17,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:09:19,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:09:20,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:09:22,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:09:22,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1008 [2020-10-14 01:09:22,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 01:09:22,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 01:09:22,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:09:22,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:09:22,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:09:22,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-14 01:09:22,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-14 01:09:22,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:09:22,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:09:22,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:09:22,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:09:22,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:09:22,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:09:22,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:09:22,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 01:09:22,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:09:22,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:09:22,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:09:22,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:09:22,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:09:22,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:09:22,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:09:22,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:09:22,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:09:22,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:09:22,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-14 01:09:22,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:09:22,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 01:09:22,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:09:22,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:09:22,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:09:22,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:09:22,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 01:09:22,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:09:22,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-14 01:09:22,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:09:22,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:09:22,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:09:22,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 01:09:22,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:09:22,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-14 01:09:22,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:09:22,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:09:22,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:09:22,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:09:22,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 01:09:22,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:09:22,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-10-14 01:09:22,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:09:22,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:09:22,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:09:22,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 01:09:22,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:09:22,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-14 01:09:22,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:09:22,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:09:22,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:09:22,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-14 01:09:22,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:09:22,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:09:24,313 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 235 proven. 79 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-10-14 01:09:24,314 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1720194036] [2020-10-14 01:09:24,314 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:09:24,314 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 01:09:24,314 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833730190] [2020-10-14 01:09:24,316 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:09:24,316 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:09:24,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:09:24,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:09:24,317 INFO L87 Difference]: Start difference. First operand 41135 states and 53402 transitions. Second operand 7 states. [2020-10-14 01:09:35,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:09:35,234 INFO L93 Difference]: Finished difference Result 98761 states and 130718 transitions. [2020-10-14 01:09:35,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 01:09:35,235 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 988 [2020-10-14 01:09:35,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:09:35,413 INFO L225 Difference]: With dead ends: 98761 [2020-10-14 01:09:35,414 INFO L226 Difference]: Without dead ends: 57632 [2020-10-14 01:09:35,481 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 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 01:09:35,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57632 states. [2020-10-14 01:09:36,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57632 to 57467. [2020-10-14 01:09:36,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57467 states. [2020-10-14 01:09:36,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57467 states to 57467 states and 70595 transitions. [2020-10-14 01:09:36,620 INFO L78 Accepts]: Start accepts. Automaton has 57467 states and 70595 transitions. Word has length 988 [2020-10-14 01:09:36,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:09:36,620 INFO L479 AbstractCegarLoop]: Abstraction has 57467 states and 70595 transitions. [2020-10-14 01:09:36,620 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:09:36,620 INFO L276 IsEmpty]: Start isEmpty. Operand 57467 states and 70595 transitions. [2020-10-14 01:09:36,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1009 [2020-10-14 01:09:36,715 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:09:36,716 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:09:36,716 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 01:09:36,716 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:09:36,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:09:36,717 INFO L82 PathProgramCache]: Analyzing trace with hash -1924042353, now seen corresponding path program 1 times [2020-10-14 01:09:36,717 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:09:36,718 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [62051411] [2020-10-14 01:09:36,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:09:36,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:09:36,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:09:37,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:09:37,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:09:37,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:09:41,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:09:41,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:09:41,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1028 [2020-10-14 01:09:41,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 01:09:41,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-14 01:09:41,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:09:41,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:09:41,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:09:41,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-14 01:09:41,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-14 01:09:41,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:09:41,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:09:41,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:09:41,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:09:41,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:09:41,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:09:41,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:09:41,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 01:09:41,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:09:41,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:09:41,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:09:41,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:09:41,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:09:41,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:09:42,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:09:42,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:09:42,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:09:42,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:09:42,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 01:09:42,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:09:42,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 01:09:42,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:09:42,034 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:09:42,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:09:42,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:09:42,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 01:09:42,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:09:42,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-14 01:09:42,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:09:42,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:09:42,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:09:42,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-14 01:09:42,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:09:42,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-14 01:09:42,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:09:42,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:09:42,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:09:42,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:09:42,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-14 01:09:42,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:09:42,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-10-14 01:09:42,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:09:42,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:09:42,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:09:42,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 01:09:42,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:09:42,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-14 01:09:42,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:09:42,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:09:42,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:09:42,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-14 01:09:42,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:09:42,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:09:42,918 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 246 proven. 79 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-10-14 01:09:42,918 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [62051411] [2020-10-14 01:09:42,918 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:09:42,918 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 01:09:42,919 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890322008] [2020-10-14 01:09:42,919 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:09:42,920 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:09:42,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:09:42,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:09:42,920 INFO L87 Difference]: Start difference. First operand 57467 states and 70595 transitions. Second operand 7 states. [2020-10-14 01:09:54,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:09:54,318 INFO L93 Difference]: Finished difference Result 140349 states and 175306 transitions. [2020-10-14 01:09:54,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 01:09:54,318 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1008 [2020-10-14 01:09:54,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:09:54,545 INFO L225 Difference]: With dead ends: 140349 [2020-10-14 01:09:54,545 INFO L226 Difference]: Without dead ends: 83722 [2020-10-14 01:09:54,614 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 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 01:09:54,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83722 states. [2020-10-14 01:09:55,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83722 to 75177. [2020-10-14 01:09:55,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75177 states. [2020-10-14 01:09:55,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75177 states to 75177 states and 89716 transitions. [2020-10-14 01:09:55,880 INFO L78 Accepts]: Start accepts. Automaton has 75177 states and 89716 transitions. Word has length 1008 [2020-10-14 01:09:55,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:09:55,880 INFO L479 AbstractCegarLoop]: Abstraction has 75177 states and 89716 transitions. [2020-10-14 01:09:55,880 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:09:55,881 INFO L276 IsEmpty]: Start isEmpty. Operand 75177 states and 89716 transitions. [2020-10-14 01:09:55,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1209 [2020-10-14 01:09:55,956 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:09:55,957 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:09:55,958 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 01:09:55,958 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:09:55,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:09:55,958 INFO L82 PathProgramCache]: Analyzing trace with hash 784858465, now seen corresponding path program 1 times [2020-10-14 01:09:55,959 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:09:55,959 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1912753707] [2020-10-14 01:09:55,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:09:56,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:09:56,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:09:56,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:09:56,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:09:56,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:09:57,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:10:01,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:10:01,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1232 [2020-10-14 01:10:01,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 01:10:01,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5069 [2020-10-14 01:10:01,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:10:01,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:10:01,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:10:01,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-14 01:10:01,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-10-14 01:10:01,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:10:01,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:10:01,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:10:01,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:10:01,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:10:01,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:10:01,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:10:01,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 01:10:01,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:10:01,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:10:01,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:10:01,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:10:01,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:10:01,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:10:01,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:10:01,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:10:01,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:10:01,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:10:01,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 01:10:01,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:10:01,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 01:10:01,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:10:01,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:10:01,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:10:01,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:10:01,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 01:10:01,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:10:01,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-14 01:10:01,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:10:01,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:10:01,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:10:01,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-14 01:10:01,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:10:01,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-14 01:10:01,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:10:01,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:10:01,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:10:01,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:10:01,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-10-14 01:10:01,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:10:01,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2020-10-14 01:10:01,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:10:01,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:10:01,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:10:01,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-14 01:10:01,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:10:01,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 01:10:01,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:10:01,627 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:10:01,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:10:01,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-14 01:10:01,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:10:01,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:10:01,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-10-14 01:10:01,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:10:01,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:10:01,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:10:01,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-14 01:10:01,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:10:01,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-14 01:10:01,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:10:01,704 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:10:01,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:10:01,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 138 [2020-10-14 01:10:01,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:10:01,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:10:01,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2020-10-14 01:10:01,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:10:01,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:10:01,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:10:01,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 01:10:01,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:10:01,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-14 01:10:01,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:10:01,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:10:01,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:10:01,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-14 01:10:01,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:10:01,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:10:02,390 INFO L134 CoverageAnalysis]: Checked inductivity of 940 backedges. 448 proven. 263 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2020-10-14 01:10:02,391 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1912753707] [2020-10-14 01:10:02,391 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:10:02,391 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 01:10:02,391 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193658948] [2020-10-14 01:10:02,393 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 01:10:02,393 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:10:02,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 01:10:02,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 01:10:02,393 INFO L87 Difference]: Start difference. First operand 75177 states and 89716 transitions. Second operand 8 states.