/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/Problem18_label24.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 04:15:55,009 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 04:15:55,012 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 04:15:55,038 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 04:15:55,039 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 04:15:55,040 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 04:15:55,041 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 04:15:55,043 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 04:15:55,045 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 04:15:55,046 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 04:15:55,047 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 04:15:55,049 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 04:15:55,049 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 04:15:55,050 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 04:15:55,051 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 04:15:55,053 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 04:15:55,054 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 04:15:55,055 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 04:15:55,057 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 04:15:55,059 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 04:15:55,061 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 04:15:55,062 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 04:15:55,063 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 04:15:55,064 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 04:15:55,069 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 04:15:55,070 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 04:15:55,070 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 04:15:55,073 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 04:15:55,074 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 04:15:55,078 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 04:15:55,078 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 04:15:55,079 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 04:15:55,080 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 04:15:55,081 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 04:15:55,083 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 04:15:55,083 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 04:15:55,085 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 04:15:55,085 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 04:15:55,085 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 04:15:55,087 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 04:15:55,088 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 04:15:55,089 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 04:15:55,137 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 04:15:55,138 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 04:15:55,140 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 04:15:55,140 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 04:15:55,141 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 04:15:55,141 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 04:15:55,141 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 04:15:55,141 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 04:15:55,142 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 04:15:55,142 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 04:15:55,143 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 04:15:55,143 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 04:15:55,143 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 04:15:55,144 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 04:15:55,144 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 04:15:55,144 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 04:15:55,145 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 04:15:55,145 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 04:15:55,145 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 04:15:55,145 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 04:15:55,146 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 04:15:55,146 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 04:15:55,146 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 04:15:55,146 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 04:15:55,147 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 04:15:55,147 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 04:15:55,147 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 04:15:55,147 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 04:15:55,147 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 04:15:55,147 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 04:15:55,483 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 04:15:55,496 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 04:15:55,500 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 04:15:55,502 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 04:15:55,502 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 04:15:55,503 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label24.c [2020-10-14 04:15:55,585 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/39465a739/7595ebd7f7e4427886e671cb21a2e4c7/FLAG01ec39642 [2020-10-14 04:15:56,376 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 04:15:56,377 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem18_label24.c [2020-10-14 04:15:56,406 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/39465a739/7595ebd7f7e4427886e671cb21a2e4c7/FLAG01ec39642 [2020-10-14 04:15:56,466 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/39465a739/7595ebd7f7e4427886e671cb21a2e4c7 [2020-10-14 04:15:56,478 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 04:15:56,480 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 04:15:56,483 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 04:15:56,483 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 04:15:56,487 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 04:15:56,488 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:15:56" (1/1) ... [2020-10-14 04:15:56,492 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1613be08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:15:56, skipping insertion in model container [2020-10-14 04:15:56,493 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:15:56" (1/1) ... [2020-10-14 04:15:56,502 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 04:15:56,636 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 04:15:58,042 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:15:58,051 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 04:15:58,521 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:15:58,556 INFO L208 MainTranslator]: Completed translation [2020-10-14 04:15:58,556 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:15:58 WrapperNode [2020-10-14 04:15:58,557 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 04:15:58,558 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 04:15:58,558 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 04:15:58,558 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 04:15:58,573 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:15:58" (1/1) ... [2020-10-14 04:15:58,573 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:15:58" (1/1) ... [2020-10-14 04:15:58,630 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:15:58" (1/1) ... [2020-10-14 04:15:58,631 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:15:58" (1/1) ... [2020-10-14 04:15:58,738 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:15:58" (1/1) ... [2020-10-14 04:15:58,783 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:15:58" (1/1) ... [2020-10-14 04:15:58,804 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:15:58" (1/1) ... [2020-10-14 04:15:58,836 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 04:15:58,837 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 04:15:58,837 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 04:15:58,837 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 04:15:58,838 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:15:58" (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 04:15:58,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 04:15:58,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 04:15:58,917 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 04:15:58,918 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 04:15:58,918 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 04:15:58,918 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 04:15:58,918 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 04:15:58,918 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 04:15:58,919 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 04:15:58,919 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 04:15:58,919 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 04:15:58,919 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 04:15:58,920 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 04:15:58,920 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 04:15:58,920 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 04:16:04,952 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 04:16:04,953 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 04:16:04,969 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:16:04 BoogieIcfgContainer [2020-10-14 04:16:04,970 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 04:16:04,971 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 04:16:04,971 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 04:16:04,976 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 04:16:04,976 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 04:15:56" (1/3) ... [2020-10-14 04:16:04,977 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34e2d3b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:16:04, skipping insertion in model container [2020-10-14 04:16:04,977 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:15:58" (2/3) ... [2020-10-14 04:16:04,978 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34e2d3b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:16:04, skipping insertion in model container [2020-10-14 04:16:04,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:16:04" (3/3) ... [2020-10-14 04:16:04,980 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem18_label24.c [2020-10-14 04:16:04,991 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 04:16:05,000 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 04:16:05,013 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 04:16:05,041 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 04:16:05,041 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 04:16:05,041 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 04:16:05,041 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 04:16:05,042 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 04:16:05,042 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 04:16:05,042 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 04:16:05,042 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 04:16:05,076 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states. [2020-10-14 04:16:05,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-14 04:16:05,085 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:16:05,086 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] [2020-10-14 04:16:05,087 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:16:05,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:16:05,092 INFO L82 PathProgramCache]: Analyzing trace with hash -990352286, now seen corresponding path program 1 times [2020-10-14 04:16:05,099 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:16:05,099 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1258027964] [2020-10-14 04:16:05,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:16:05,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:16:05,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:05,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:16:05,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-14 04:16:05,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:16:05,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 409 [2020-10-14 04:16:05,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:16:05,669 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:16:05,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:16:05,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 04:16:05,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-14 04:16:05,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 04:16:05,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:16:05,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:16:05,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:05,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:16:05,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:16:05,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:16:05,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 04:16:05,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:16:05,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:16:05,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:16:05,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:16:05,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:16:05,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:16:05,828 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 04:16:05,829 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1258027964] [2020-10-14 04:16:05,832 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:16:05,832 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 04:16:05,833 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726332103] [2020-10-14 04:16:05,839 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:16:05,839 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:16:05,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:16:05,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:16:05,858 INFO L87 Difference]: Start difference. First operand 774 states. Second operand 5 states. [2020-10-14 04:16:18,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:16:18,021 INFO L93 Difference]: Finished difference Result 2984 states and 5769 transitions. [2020-10-14 04:16:18,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 04:16:18,023 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 57 [2020-10-14 04:16:18,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:16:18,054 INFO L225 Difference]: With dead ends: 2984 [2020-10-14 04:16:18,054 INFO L226 Difference]: Without dead ends: 2142 [2020-10-14 04:16:18,066 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:16:18,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2142 states. [2020-10-14 04:16:18,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2142 to 2135. [2020-10-14 04:16:18,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2135 states. [2020-10-14 04:16:18,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2135 states to 2135 states and 3571 transitions. [2020-10-14 04:16:18,263 INFO L78 Accepts]: Start accepts. Automaton has 2135 states and 3571 transitions. Word has length 57 [2020-10-14 04:16:18,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:16:18,267 INFO L479 AbstractCegarLoop]: Abstraction has 2135 states and 3571 transitions. [2020-10-14 04:16:18,267 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:16:18,267 INFO L276 IsEmpty]: Start isEmpty. Operand 2135 states and 3571 transitions. [2020-10-14 04:16:18,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-14 04:16:18,280 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:16:18,281 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 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 04:16:18,281 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 04:16:18,281 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:16:18,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:16:18,282 INFO L82 PathProgramCache]: Analyzing trace with hash 1220501035, now seen corresponding path program 1 times [2020-10-14 04:16:18,282 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:16:18,282 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2019408193] [2020-10-14 04:16:18,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:16:18,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:16:18,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:18,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:19,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:16:19,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-14 04:16:19,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:16:19,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 718 [2020-10-14 04:16:19,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:16:19,037 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:16:19,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:16:19,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-14 04:16:19,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-14 04:16:19,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:16:19,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:16:19,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:16:19,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:19,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:16:19,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:16:19,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:16:19,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:16:19,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:16:19,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:16:19,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:16:19,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:16:19,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:16:19,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:16:19,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:16:19,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:16:19,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:19,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:16:19,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 04:16:19,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:16:19,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-14 04:16:19,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:16:19,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:16:19,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:16:19,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:16:19,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 04:16:19,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:16:19,236 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 49 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:16:19,236 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2019408193] [2020-10-14 04:16:19,237 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:16:19,237 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:16:19,237 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087398751] [2020-10-14 04:16:19,239 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:16:19,239 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:16:19,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:16:19,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:16:19,240 INFO L87 Difference]: Start difference. First operand 2135 states and 3571 transitions. Second operand 5 states. [2020-10-14 04:16:29,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:16:29,761 INFO L93 Difference]: Finished difference Result 6400 states and 10794 transitions. [2020-10-14 04:16:29,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:16:29,763 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 128 [2020-10-14 04:16:29,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:16:29,790 INFO L225 Difference]: With dead ends: 6400 [2020-10-14 04:16:29,791 INFO L226 Difference]: Without dead ends: 4271 [2020-10-14 04:16:29,797 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:16:29,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4271 states. [2020-10-14 04:16:29,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4271 to 4267. [2020-10-14 04:16:29,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4267 states. [2020-10-14 04:16:29,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4267 states to 4267 states and 6377 transitions. [2020-10-14 04:16:29,944 INFO L78 Accepts]: Start accepts. Automaton has 4267 states and 6377 transitions. Word has length 128 [2020-10-14 04:16:29,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:16:29,947 INFO L479 AbstractCegarLoop]: Abstraction has 4267 states and 6377 transitions. [2020-10-14 04:16:29,947 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:16:29,947 INFO L276 IsEmpty]: Start isEmpty. Operand 4267 states and 6377 transitions. [2020-10-14 04:16:29,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-14 04:16:29,953 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:16:29,954 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 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 04:16:29,954 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 04:16:29,954 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:16:29,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:16:29,955 INFO L82 PathProgramCache]: Analyzing trace with hash -335890806, now seen corresponding path program 1 times [2020-10-14 04:16:29,955 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:16:29,955 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1224183334] [2020-10-14 04:16:29,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:16:29,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:16:30,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:30,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:30,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:16:30,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-14 04:16:30,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:16:30,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 742 [2020-10-14 04:16:30,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:16:30,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:16:30,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:16:30,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-14 04:16:30,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-14 04:16:30,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:16:30,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:16:30,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:16:30,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:30,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:16:30,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:16:30,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:16:30,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:16:30,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:16:30,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:16:30,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:16:30,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:16:30,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:16:30,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:16:30,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:16:30,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:16:30,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:30,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:16:30,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 04:16:30,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:16:30,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-14 04:16:30,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:16:30,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:16:30,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:16:30,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:16:30,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-14 04:16:30,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:16:31,025 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 49 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:16:31,025 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1224183334] [2020-10-14 04:16:31,026 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:16:31,026 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:16:31,026 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016179891] [2020-10-14 04:16:31,028 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:16:31,029 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:16:31,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:16:31,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:16:31,030 INFO L87 Difference]: Start difference. First operand 4267 states and 6377 transitions. Second operand 5 states. [2020-10-14 04:16:40,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:16:40,769 INFO L93 Difference]: Finished difference Result 11371 states and 17423 transitions. [2020-10-14 04:16:40,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:16:40,775 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 129 [2020-10-14 04:16:40,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:16:40,814 INFO L225 Difference]: With dead ends: 11371 [2020-10-14 04:16:40,815 INFO L226 Difference]: Without dead ends: 7110 [2020-10-14 04:16:40,827 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:16:40,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7110 states. [2020-10-14 04:16:41,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7110 to 7106. [2020-10-14 04:16:41,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7106 states. [2020-10-14 04:16:41,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7106 states to 7106 states and 9848 transitions. [2020-10-14 04:16:41,051 INFO L78 Accepts]: Start accepts. Automaton has 7106 states and 9848 transitions. Word has length 129 [2020-10-14 04:16:41,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:16:41,052 INFO L479 AbstractCegarLoop]: Abstraction has 7106 states and 9848 transitions. [2020-10-14 04:16:41,052 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:16:41,053 INFO L276 IsEmpty]: Start isEmpty. Operand 7106 states and 9848 transitions. [2020-10-14 04:16:41,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-14 04:16:41,060 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:16:41,061 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:16:41,061 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 04:16:41,062 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:16:41,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:16:41,062 INFO L82 PathProgramCache]: Analyzing trace with hash -1233377745, now seen corresponding path program 1 times [2020-10-14 04:16:41,063 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:16:41,063 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1020126797] [2020-10-14 04:16:41,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:16:41,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:16:41,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:41,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:42,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:16:42,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-14 04:16:42,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:16:42,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 963 [2020-10-14 04:16:42,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:16:42,098 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:16:42,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:16:42,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-10-14 04:16:42,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-14 04:16:42,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-14 04:16:42,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:16:42,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:16:42,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:42,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:16:42,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:16:42,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:16:42,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 04:16:42,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:16:42,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:16:42,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:16:42,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:16:42,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:16:42,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:16:42,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:16:42,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:16:42,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:42,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:16:42,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-14 04:16:42,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:16:42,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-14 04:16:42,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:16:42,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:16:42,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:16:42,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:16:42,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-14 04:16:42,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:16:42,422 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 49 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:16:42,424 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1020126797] [2020-10-14 04:16:42,424 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:16:42,424 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 04:16:42,425 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217745053] [2020-10-14 04:16:42,427 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 04:16:42,427 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:16:42,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 04:16:42,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:16:42,432 INFO L87 Difference]: Start difference. First operand 7106 states and 9848 transitions. Second operand 6 states. [2020-10-14 04:16:55,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:16:55,510 INFO L93 Difference]: Finished difference Result 19875 states and 28172 transitions. [2020-10-14 04:16:55,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:16:55,512 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 146 [2020-10-14 04:16:55,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:16:55,579 INFO L225 Difference]: With dead ends: 19875 [2020-10-14 04:16:55,579 INFO L226 Difference]: Without dead ends: 12775 [2020-10-14 04:16:55,597 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:16:55,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12775 states. [2020-10-14 04:16:55,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12775 to 12771. [2020-10-14 04:16:55,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12771 states. [2020-10-14 04:16:55,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12771 states to 12771 states and 17608 transitions. [2020-10-14 04:16:55,927 INFO L78 Accepts]: Start accepts. Automaton has 12771 states and 17608 transitions. Word has length 146 [2020-10-14 04:16:55,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:16:55,929 INFO L479 AbstractCegarLoop]: Abstraction has 12771 states and 17608 transitions. [2020-10-14 04:16:55,929 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 04:16:55,929 INFO L276 IsEmpty]: Start isEmpty. Operand 12771 states and 17608 transitions. [2020-10-14 04:16:55,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2020-10-14 04:16:55,935 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:16:55,935 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:16:55,935 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 04:16:55,936 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:16:55,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:16:55,936 INFO L82 PathProgramCache]: Analyzing trace with hash 1621179014, now seen corresponding path program 1 times [2020-10-14 04:16:55,936 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:16:55,937 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1515571343] [2020-10-14 04:16:55,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:16:55,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:16:56,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:56,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:57,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:57,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:16:57,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 217 [2020-10-14 04:16:57,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:16:57,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1683 [2020-10-14 04:16:57,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:16:57,673 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:16:57,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:16:57,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 160 [2020-10-14 04:16:57,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-14 04:16:57,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:16:57,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:16:57,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:16:57,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:57,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:16:57,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:16:57,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:16:57,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:16:57,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:16:57,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:16:57,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:16:57,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:16:57,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:16:57,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:16:57,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:16:57,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:16:57,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:57,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:16:57,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-14 04:16:57,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:16:57,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-14 04:16:57,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:16:57,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:16:57,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:16:57,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:16:57,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-10-14 04:16:57,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:16:58,000 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 49 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:16:58,000 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1515571343] [2020-10-14 04:16:58,004 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:16:58,004 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:16:58,005 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052136027] [2020-10-14 04:16:58,005 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:16:58,006 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:16:58,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:16:58,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:16:58,006 INFO L87 Difference]: Start difference. First operand 12771 states and 17608 transitions. Second operand 5 states. [2020-10-14 04:17:08,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:17:08,122 INFO L93 Difference]: Finished difference Result 32631 states and 46335 transitions. [2020-10-14 04:17:08,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:17:08,127 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 207 [2020-10-14 04:17:08,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:17:08,222 INFO L225 Difference]: With dead ends: 32631 [2020-10-14 04:17:08,222 INFO L226 Difference]: Without dead ends: 19866 [2020-10-14 04:17:08,254 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:17:08,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19866 states. [2020-10-14 04:17:08,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19866 to 19862. [2020-10-14 04:17:08,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19862 states. [2020-10-14 04:17:08,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19862 states to 19862 states and 26705 transitions. [2020-10-14 04:17:08,812 INFO L78 Accepts]: Start accepts. Automaton has 19862 states and 26705 transitions. Word has length 207 [2020-10-14 04:17:08,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:17:08,812 INFO L479 AbstractCegarLoop]: Abstraction has 19862 states and 26705 transitions. [2020-10-14 04:17:08,813 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:17:08,813 INFO L276 IsEmpty]: Start isEmpty. Operand 19862 states and 26705 transitions. [2020-10-14 04:17:08,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2020-10-14 04:17:08,821 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:17:08,821 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 04:17:08,822 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 04:17:08,822 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:17:08,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:17:08,822 INFO L82 PathProgramCache]: Analyzing trace with hash -1725965798, now seen corresponding path program 1 times [2020-10-14 04:17:08,823 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:17:08,823 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1263309311] [2020-10-14 04:17:08,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:17:08,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:17:08,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:17:08,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:17:09,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:17:10,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:17:10,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:17:13,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:17:13,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 233 [2020-10-14 04:17:13,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 04:17:13,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-14 04:17:13,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:17:13,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:17:13,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:17:13,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-14 04:17:13,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-14 04:17:13,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:17:13,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:17:13,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:17:13,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:17:13,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:17:13,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:17:13,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:17:13,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:17:13,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:17:13,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:17:13,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:17:13,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:17:13,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:17:13,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:17:13,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:17:13,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:17:13,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:17:14,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:17:14,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 04:17:14,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:17:14,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-14 04:17:14,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:17:14,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:17:14,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:17:14,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:17:14,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-14 04:17:14,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:17:14,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-14 04:17:14,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:17:14,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:17:14,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:17:14,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 04:17:14,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:17:14,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-14 04:17:14,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:17:14,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:17:14,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:17:14,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:17:14,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 04:17:14,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:17:14,268 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 167 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 04:17:14,269 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1263309311] [2020-10-14 04:17:14,270 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:17:14,270 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:17:14,271 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636971597] [2020-10-14 04:17:14,272 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:17:14,272 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:17:14,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:17:14,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:17:14,273 INFO L87 Difference]: Start difference. First operand 19862 states and 26705 transitions. Second operand 7 states. [2020-10-14 04:17:24,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:17:24,374 INFO L93 Difference]: Finished difference Result 40572 states and 55434 transitions. [2020-10-14 04:17:24,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 04:17:24,375 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 221 [2020-10-14 04:17:24,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:17:24,462 INFO L225 Difference]: With dead ends: 40572 [2020-10-14 04:17:24,462 INFO L226 Difference]: Without dead ends: 20716 [2020-10-14 04:17:24,503 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:17:24,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20716 states. [2020-10-14 04:17:24,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20716 to 15751. [2020-10-14 04:17:24,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15751 states. [2020-10-14 04:17:24,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15751 states to 15751 states and 20161 transitions. [2020-10-14 04:17:24,903 INFO L78 Accepts]: Start accepts. Automaton has 15751 states and 20161 transitions. Word has length 221 [2020-10-14 04:17:24,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:17:24,903 INFO L479 AbstractCegarLoop]: Abstraction has 15751 states and 20161 transitions. [2020-10-14 04:17:24,903 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:17:24,904 INFO L276 IsEmpty]: Start isEmpty. Operand 15751 states and 20161 transitions. [2020-10-14 04:17:24,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2020-10-14 04:17:24,910 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:17:24,910 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 04:17:24,911 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 04:17:24,911 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:17:24,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:17:24,912 INFO L82 PathProgramCache]: Analyzing trace with hash 1334198462, now seen corresponding path program 1 times [2020-10-14 04:17:24,912 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:17:24,912 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1353076041] [2020-10-14 04:17:24,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:17:24,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:17:24,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:17:24,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:17:25,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:17:26,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:17:27,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:17:27,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 235 [2020-10-14 04:17:27,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:17:27,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2405 [2020-10-14 04:17:27,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:17:27,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:17:27,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:17:27,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-14 04:17:27,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-14 04:17:27,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:17:27,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:17:27,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:17:27,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:17:27,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:17:27,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:17:27,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:17:27,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:17:27,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:17:27,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:17:27,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:17:27,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:17:27,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:17:27,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:17:27,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:17:27,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:17:27,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:17:27,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:17:27,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 04:17:27,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:17:27,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-14 04:17:27,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:17:27,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:17:27,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:17:27,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:17:27,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-14 04:17:27,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:17:27,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-14 04:17:27,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:17:27,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:17:27,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:17:27,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 04:17:27,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:17:27,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-14 04:17:27,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:17:27,660 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:17:27,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:17:27,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:17:27,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 04:17:27,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:17:27,755 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 169 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 04:17:27,755 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1353076041] [2020-10-14 04:17:27,755 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:17:27,756 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:17:27,756 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914333054] [2020-10-14 04:17:27,757 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:17:27,757 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:17:27,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:17:27,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:17:27,758 INFO L87 Difference]: Start difference. First operand 15751 states and 20161 transitions. Second operand 7 states. [2020-10-14 04:17:40,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:17:40,836 INFO L93 Difference]: Finished difference Result 37453 states and 48262 transitions. [2020-10-14 04:17:40,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 04:17:40,842 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 223 [2020-10-14 04:17:40,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:17:40,887 INFO L225 Difference]: With dead ends: 37453 [2020-10-14 04:17:40,887 INFO L226 Difference]: Without dead ends: 18090 [2020-10-14 04:17:40,913 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-14 04:17:40,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18090 states. [2020-10-14 04:17:41,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18090 to 18059. [2020-10-14 04:17:41,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18059 states. [2020-10-14 04:17:41,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18059 states to 18059 states and 20404 transitions. [2020-10-14 04:17:41,234 INFO L78 Accepts]: Start accepts. Automaton has 18059 states and 20404 transitions. Word has length 223 [2020-10-14 04:17:41,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:17:41,234 INFO L479 AbstractCegarLoop]: Abstraction has 18059 states and 20404 transitions. [2020-10-14 04:17:41,235 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:17:41,235 INFO L276 IsEmpty]: Start isEmpty. Operand 18059 states and 20404 transitions. [2020-10-14 04:17:41,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 400 [2020-10-14 04:17:41,252 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:17:41,252 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:17:41,252 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 04:17:41,253 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:17:41,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:17:41,253 INFO L82 PathProgramCache]: Analyzing trace with hash 1194931490, now seen corresponding path program 1 times [2020-10-14 04:17:41,253 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:17:41,254 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2064971018] [2020-10-14 04:17:41,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:17:41,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:17:41,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:17:41,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:17:42,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:17:43,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:17:44,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:17:46,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:17:46,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 413 [2020-10-14 04:17:46,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 04:17:46,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-14 04:17:46,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:17:46,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:17:46,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:17:46,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-10-14 04:17:46,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 162 [2020-10-14 04:17:46,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:17:46,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:17:46,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:17:46,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:17:46,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:17:46,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:17:46,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:17:46,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:17:46,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:17:46,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:17:46,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:17:46,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:17:46,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:17:46,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:17:46,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:17:46,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:17:46,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:17:46,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:17:46,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-14 04:17:46,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:17:46,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 272 [2020-10-14 04:17:46,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:17:46,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:17:46,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:17:46,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:17:46,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-14 04:17:46,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:17:46,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-14 04:17:46,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:17:46,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:17:47,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:17:47,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-14 04:17:47,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:17:47,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 250 [2020-10-14 04:17:47,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:17:47,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:17:47,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:17:47,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:17:47,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 160 [2020-10-14 04:17:47,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:17:47,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2020-10-14 04:17:47,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:17:47,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:17:47,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:17:47,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 04:17:47,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:17:47,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-14 04:17:47,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:17:47,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:17:47,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:17:47,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-14 04:17:47,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:17:47,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:17:47,455 INFO L134 CoverageAnalysis]: Checked inductivity of 422 backedges. 240 proven. 93 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2020-10-14 04:17:47,456 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2064971018] [2020-10-14 04:17:47,456 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:17:47,456 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:17:47,457 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17332184] [2020-10-14 04:17:47,457 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:17:47,458 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:17:47,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:17:47,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:17:47,459 INFO L87 Difference]: Start difference. First operand 18059 states and 20404 transitions. Second operand 7 states. [2020-10-14 04:17:58,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:17:58,235 INFO L93 Difference]: Finished difference Result 44697 states and 51303 transitions. [2020-10-14 04:17:58,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 04:17:58,236 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 399 [2020-10-14 04:17:58,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:17:58,307 INFO L225 Difference]: With dead ends: 44697 [2020-10-14 04:17:58,308 INFO L226 Difference]: Without dead ends: 26644 [2020-10-14 04:17:58,334 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:17:58,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26644 states. [2020-10-14 04:17:58,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26644 to 26616. [2020-10-14 04:17:58,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26616 states. [2020-10-14 04:17:58,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26616 states to 26616 states and 30040 transitions. [2020-10-14 04:17:58,774 INFO L78 Accepts]: Start accepts. Automaton has 26616 states and 30040 transitions. Word has length 399 [2020-10-14 04:17:58,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:17:58,775 INFO L479 AbstractCegarLoop]: Abstraction has 26616 states and 30040 transitions. [2020-10-14 04:17:58,775 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:17:58,775 INFO L276 IsEmpty]: Start isEmpty. Operand 26616 states and 30040 transitions. [2020-10-14 04:17:58,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2020-10-14 04:17:58,799 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:17:58,799 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 04:17:58,799 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 04:17:58,800 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:17:58,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:17:58,800 INFO L82 PathProgramCache]: Analyzing trace with hash -1232117206, now seen corresponding path program 1 times [2020-10-14 04:17:58,801 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:17:58,801 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1141313355] [2020-10-14 04:17:58,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:17:58,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:17:58,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:17:58,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:17:59,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:17:59,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:18:03,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:18:03,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 439 [2020-10-14 04:18:03,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:18:03,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-10-14 04:18:03,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:18:03,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:18:03,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:18:03,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 286 [2020-10-14 04:18:03,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-14 04:18:03,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:18:03,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:18:03,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:18:03,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:18:03,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:18:03,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:18:03,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:18:03,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:18:03,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:18:03,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:18:03,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:18:03,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:18:03,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:18:03,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:18:04,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:18:04,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:18:04,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:18:04,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:18:04,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 04:18:04,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:18:04,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 04:18:04,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:18:04,033 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:18:04,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:18:04,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:18:04,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:18:04,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:18:04,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-14 04:18:04,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:18:04,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:18:04,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:18:04,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 04:18:04,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:18:04,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 04:18:04,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:18:04,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:18:04,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:18:04,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:18:04,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:18:04,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:18:04,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-14 04:18:04,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:18:04,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:18:04,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:18:04,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-14 04:18:04,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:18:04,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-14 04:18:04,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:18:04,201 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:18:04,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:18:04,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:18:04,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-14 04:18:04,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:18:04,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2020-10-14 04:18:04,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:18:04,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:18:04,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:18:04,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 04:18:04,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:18:04,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 314 [2020-10-14 04:18:04,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:18:04,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:18:04,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:18:04,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:18:04,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 04:18:04,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:18:04,798 INFO L134 CoverageAnalysis]: Checked inductivity of 656 backedges. 440 proven. 2 refuted. 0 times theorem prover too weak. 214 trivial. 0 not checked. [2020-10-14 04:18:04,802 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1141313355] [2020-10-14 04:18:04,803 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:18:04,804 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:18:04,804 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124997591] [2020-10-14 04:18:04,805 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:18:04,805 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:18:04,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:18:04,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:18:04,805 INFO L87 Difference]: Start difference. First operand 26616 states and 30040 transitions. Second operand 7 states. [2020-10-14 04:18:15,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:18:15,998 INFO L93 Difference]: Finished difference Result 51176 states and 58312 transitions. [2020-10-14 04:18:15,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 04:18:15,999 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 423 [2020-10-14 04:18:16,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:18:16,054 INFO L225 Difference]: With dead ends: 51176 [2020-10-14 04:18:16,054 INFO L226 Difference]: Without dead ends: 24566 [2020-10-14 04:18:16,084 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:18:16,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24566 states. [2020-10-14 04:18:16,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24566 to 24488. [2020-10-14 04:18:16,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24488 states. [2020-10-14 04:18:16,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24488 states to 24488 states and 26842 transitions. [2020-10-14 04:18:16,399 INFO L78 Accepts]: Start accepts. Automaton has 24488 states and 26842 transitions. Word has length 423 [2020-10-14 04:18:16,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:18:16,400 INFO L479 AbstractCegarLoop]: Abstraction has 24488 states and 26842 transitions. [2020-10-14 04:18:16,400 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:18:16,400 INFO L276 IsEmpty]: Start isEmpty. Operand 24488 states and 26842 transitions. [2020-10-14 04:18:16,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2020-10-14 04:18:16,419 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:18:16,419 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:18:16,419 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 04:18:16,420 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:18:16,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:18:16,420 INFO L82 PathProgramCache]: Analyzing trace with hash 664296730, now seen corresponding path program 1 times [2020-10-14 04:18:16,420 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:18:16,420 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1399101223] [2020-10-14 04:18:16,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:18:16,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:18:16,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:18:16,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:18:16,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:18:19,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:18:20,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:18:21,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:18:21,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 447 [2020-10-14 04:18:21,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 04:18:21,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-14 04:18:21,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:18:21,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:18:21,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:18:21,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-14 04:18:21,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 213 [2020-10-14 04:18:21,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:18:21,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:18:21,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:18:21,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:18:21,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:18:21,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:18:21,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:18:21,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:18:21,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:18:21,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:18:21,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:18:21,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:18:21,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:18:21,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:18:21,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:18:21,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:18:21,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:18:21,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:18:21,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 04:18:21,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:18:21,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 04:18:21,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:18:21,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:18:21,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:18:21,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:18:21,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-14 04:18:21,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:18:21,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-14 04:18:21,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:18:21,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:18:21,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:18:21,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 211 [2020-10-14 04:18:21,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:18:21,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-14 04:18:21,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:18:21,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:18:21,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:18:21,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:18:21,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 211 [2020-10-14 04:18:21,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:18:21,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2020-10-14 04:18:21,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:18:22,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:18:22,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:18:22,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 04:18:22,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:18:22,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-14 04:18:22,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:18:22,034 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:18:22,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:18:22,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-14 04:18:22,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:18:22,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:18:22,299 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 223 proven. 93 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-14 04:18:22,299 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1399101223] [2020-10-14 04:18:22,299 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:18:22,300 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:18:22,300 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797749462] [2020-10-14 04:18:22,301 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:18:22,301 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:18:22,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:18:22,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:18:22,302 INFO L87 Difference]: Start difference. First operand 24488 states and 26842 transitions. Second operand 7 states. [2020-10-14 04:18:30,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:18:30,960 INFO L93 Difference]: Finished difference Result 48330 states and 53070 transitions. [2020-10-14 04:18:30,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 04:18:30,961 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 433 [2020-10-14 04:18:30,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:18:31,002 INFO L225 Difference]: With dead ends: 48330 [2020-10-14 04:18:31,002 INFO L226 Difference]: Without dead ends: 23848 [2020-10-14 04:18:31,032 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 04:18:31,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23848 states. [2020-10-14 04:18:31,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23848 to 23813. [2020-10-14 04:18:31,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23813 states. [2020-10-14 04:18:31,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23813 states to 23813 states and 25846 transitions. [2020-10-14 04:18:31,386 INFO L78 Accepts]: Start accepts. Automaton has 23813 states and 25846 transitions. Word has length 433 [2020-10-14 04:18:31,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:18:31,387 INFO L479 AbstractCegarLoop]: Abstraction has 23813 states and 25846 transitions. [2020-10-14 04:18:31,387 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:18:31,387 INFO L276 IsEmpty]: Start isEmpty. Operand 23813 states and 25846 transitions. [2020-10-14 04:18:31,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 484 [2020-10-14 04:18:31,411 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:18:31,412 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:18:31,412 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 04:18:31,412 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:18:31,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:18:31,413 INFO L82 PathProgramCache]: Analyzing trace with hash 1628312094, now seen corresponding path program 1 times [2020-10-14 04:18:31,413 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:18:31,413 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2083708201] [2020-10-14 04:18:31,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:18:31,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:18:31,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:18:31,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:18:31,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:18:36,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:18:36,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:18:36,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:18:36,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 497 [2020-10-14 04:18:36,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 04:18:36,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-14 04:18:36,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:18:36,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:18:36,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:18:36,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 132 [2020-10-14 04:18:36,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 213 [2020-10-14 04:18:36,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:18:36,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:18:36,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:18:36,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:18:36,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:18:36,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:18:36,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:18:36,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:18:36,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:18:36,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:18:36,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:18:36,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:18:36,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:18:36,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:18:36,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:18:36,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:18:36,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:18:36,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:18:36,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-14 04:18:36,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:18:36,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-14 04:18:36,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:18:36,736 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:18:36,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:18:36,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:18:36,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-14 04:18:36,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:18:36,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-14 04:18:36,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:18:36,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:18:37,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:18:37,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 211 [2020-10-14 04:18:37,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:18:37,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 300 [2020-10-14 04:18:37,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:18:37,098 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:18:37,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:18:37,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:18:37,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 211 [2020-10-14 04:18:37,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:18:37,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2020-10-14 04:18:37,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:18:37,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:18:37,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:18:37,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 04:18:37,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:18:37,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-14 04:18:37,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:18:37,372 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:18:37,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:18:37,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-14 04:18:37,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:18:37,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:18:37,633 INFO L134 CoverageAnalysis]: Checked inductivity of 460 backedges. 273 proven. 93 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2020-10-14 04:18:37,634 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2083708201] [2020-10-14 04:18:37,635 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:18:37,635 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:18:37,635 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552263637] [2020-10-14 04:18:37,636 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:18:37,637 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:18:37,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:18:37,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:18:37,638 INFO L87 Difference]: Start difference. First operand 23813 states and 25846 transitions. Second operand 7 states. [2020-10-14 04:18:49,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:18:49,998 INFO L93 Difference]: Finished difference Result 55331 states and 63035 transitions. [2020-10-14 04:18:49,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 04:18:49,999 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 483 [2020-10-14 04:18:50,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:18:50,093 INFO L225 Difference]: With dead ends: 55331 [2020-10-14 04:18:50,093 INFO L226 Difference]: Without dead ends: 30804 [2020-10-14 04:18:50,131 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:18:50,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30804 states. [2020-10-14 04:18:50,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30804 to 29705. [2020-10-14 04:18:50,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29705 states. [2020-10-14 04:18:50,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29705 states to 29705 states and 32342 transitions. [2020-10-14 04:18:50,707 INFO L78 Accepts]: Start accepts. Automaton has 29705 states and 32342 transitions. Word has length 483 [2020-10-14 04:18:50,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:18:50,708 INFO L479 AbstractCegarLoop]: Abstraction has 29705 states and 32342 transitions. [2020-10-14 04:18:50,708 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:18:50,708 INFO L276 IsEmpty]: Start isEmpty. Operand 29705 states and 32342 transitions. [2020-10-14 04:18:50,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 504 [2020-10-14 04:18:50,730 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:18:50,731 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 04:18:50,731 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 04:18:50,731 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:18:50,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:18:50,732 INFO L82 PathProgramCache]: Analyzing trace with hash -545015698, now seen corresponding path program 1 times [2020-10-14 04:18:50,732 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:18:50,732 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [468252558] [2020-10-14 04:18:50,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:18:50,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:18:50,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:18:51,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:18:51,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:18:52,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:18:52,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 515 [2020-10-14 04:18:52,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:18:52,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1863 [2020-10-14 04:18:52,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:18:52,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:18:52,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:18:52,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 458 [2020-10-14 04:18:52,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-14 04:18:52,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:18:52,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:18:52,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:18:52,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:18:52,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:18:52,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:18:52,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:18:52,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:18:52,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:18:52,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:18:52,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:18:52,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:18:52,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:18:52,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:18:52,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:18:52,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:18:52,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:18:52,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:18:52,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 253 [2020-10-14 04:18:52,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:18:52,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-14 04:18:52,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:18:52,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:18:52,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:18:52,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:18:52,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:18:52,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:18:53,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-10-14 04:18:53,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:18:53,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:18:53,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:18:53,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 195 [2020-10-14 04:18:53,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:18:53,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-14 04:18:53,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:18:53,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:18:53,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:18:53,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:18:53,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 189 [2020-10-14 04:18:53,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:18:53,387 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 101 proven. 2 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2020-10-14 04:18:53,387 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [468252558] [2020-10-14 04:18:53,388 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:18:53,388 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:18:53,388 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535508667] [2020-10-14 04:18:53,389 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:18:53,389 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:18:53,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:18:53,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:18:53,390 INFO L87 Difference]: Start difference. First operand 29705 states and 32342 transitions. Second operand 5 states. [2020-10-14 04:19:05,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:19:05,602 INFO L93 Difference]: Finished difference Result 61534 states and 66987 transitions. [2020-10-14 04:19:05,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:19:05,608 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 503 [2020-10-14 04:19:05,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:19:05,675 INFO L225 Difference]: With dead ends: 61534 [2020-10-14 04:19:05,676 INFO L226 Difference]: Without dead ends: 31131 [2020-10-14 04:19:05,705 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 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 04:19:05,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31131 states. [2020-10-14 04:19:06,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31131 to 31113. [2020-10-14 04:19:06,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31113 states. [2020-10-14 04:19:07,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31113 states to 31113 states and 33798 transitions. [2020-10-14 04:19:07,539 INFO L78 Accepts]: Start accepts. Automaton has 31113 states and 33798 transitions. Word has length 503 [2020-10-14 04:19:07,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:19:07,540 INFO L479 AbstractCegarLoop]: Abstraction has 31113 states and 33798 transitions. [2020-10-14 04:19:07,540 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:19:07,540 INFO L276 IsEmpty]: Start isEmpty. Operand 31113 states and 33798 transitions. [2020-10-14 04:19:07,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 523 [2020-10-14 04:19:07,562 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:19:07,562 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 04:19:07,562 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 04:19:07,563 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:19:07,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:19:07,563 INFO L82 PathProgramCache]: Analyzing trace with hash -39458409, now seen corresponding path program 1 times [2020-10-14 04:19:07,564 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:19:07,564 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [753761264] [2020-10-14 04:19:07,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:19:07,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:19:07,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:19:08,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:19:08,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 534 [2020-10-14 04:19:08,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:19:08,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 796 [2020-10-14 04:19:08,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:19:08,463 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:19:08,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:19:08,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 04:19:08,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 258 [2020-10-14 04:19:08,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:19:08,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:19:08,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:19:08,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:19:08,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:19:08,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:19:08,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:19:08,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 04:19:08,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:19:08,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:19:08,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:19:08,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:19:08,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:19:08,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:19:08,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:19:08,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:19:08,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:19:08,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:19:08,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 253 [2020-10-14 04:19:08,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:19:08,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 253 [2020-10-14 04:19:08,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:19:08,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:19:08,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:19:08,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:19:08,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 253 [2020-10-14 04:19:08,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:19:08,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-10-14 04:19:08,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:19:09,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:19:09,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:19:09,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-10-14 04:19:09,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:19:09,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-14 04:19:09,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:19:09,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:19:09,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:19:09,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 211 [2020-10-14 04:19:09,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:19:09,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:19:09,222 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 100 proven. 208 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 04:19:09,222 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [753761264] [2020-10-14 04:19:09,222 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:19:09,223 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 04:19:09,223 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648427621] [2020-10-14 04:19:09,223 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 04:19:09,224 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:19:09,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 04:19:09,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 04:19:09,224 INFO L87 Difference]: Start difference. First operand 31113 states and 33798 transitions. Second operand 8 states. [2020-10-14 04:19:17,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:19:17,993 INFO L93 Difference]: Finished difference Result 67261 states and 73290 transitions. [2020-10-14 04:19:17,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 04:19:17,995 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 522 [2020-10-14 04:19:17,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:19:18,055 INFO L225 Difference]: With dead ends: 67261 [2020-10-14 04:19:18,055 INFO L226 Difference]: Without dead ends: 36154 [2020-10-14 04:19:18,084 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:19:18,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36154 states. [2020-10-14 04:19:18,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36154 to 36122. [2020-10-14 04:19:18,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36122 states. [2020-10-14 04:19:18,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36122 states to 36122 states and 38873 transitions. [2020-10-14 04:19:18,510 INFO L78 Accepts]: Start accepts. Automaton has 36122 states and 38873 transitions. Word has length 522 [2020-10-14 04:19:18,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:19:18,511 INFO L479 AbstractCegarLoop]: Abstraction has 36122 states and 38873 transitions. [2020-10-14 04:19:18,511 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 04:19:18,511 INFO L276 IsEmpty]: Start isEmpty. Operand 36122 states and 38873 transitions. [2020-10-14 04:19:18,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 706 [2020-10-14 04:19:18,551 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:19:18,551 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:19:18,552 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 04:19:18,552 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:19:18,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:19:18,552 INFO L82 PathProgramCache]: Analyzing trace with hash 2004173809, now seen corresponding path program 1 times [2020-10-14 04:19:18,553 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:19:18,553 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1376617385] [2020-10-14 04:19:18,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:19:18,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:19:18,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:19:18,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:19:19,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:19:23,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:19:23,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 721 [2020-10-14 04:19:23,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:19:23,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5055 [2020-10-14 04:19:23,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:19:23,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:19:23,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:19:23,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 565 [2020-10-14 04:19:23,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-14 04:19:23,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:19:23,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:19:23,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:19:23,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:19:23,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:19:23,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:19:23,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:19:23,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:19:23,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:19:23,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:19:23,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:19:23,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:19:23,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:19:23,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:19:23,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:19:23,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:19:23,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:19:23,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:19:23,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-14 04:19:23,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:19:23,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 04:19:23,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:19:23,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:19:23,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:19:23,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:19:23,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:19:23,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:19:24,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-14 04:19:24,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:19:24,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:19:24,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:19:24,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 435 [2020-10-14 04:19:24,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:19:24,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 236 [2020-10-14 04:19:24,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:19:24,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:19:24,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:19:24,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:19:24,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 426 [2020-10-14 04:19:24,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:19:24,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 04:19:24,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:19:24,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:19:24,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:19:24,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-14 04:19:24,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:19:24,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-14 04:19:24,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:19:24,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:19:24,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:19:24,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:19:24,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-14 04:19:24,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:19:24,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 562 [2020-10-14 04:19:24,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:19:24,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:19:24,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:19:24,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 04:19:24,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:19:24,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-14 04:19:24,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:19:24,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:19:24,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:19:24,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:19:24,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 04:19:24,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:19:24,899 INFO L134 CoverageAnalysis]: Checked inductivity of 460 backedges. 337 proven. 2 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2020-10-14 04:19:24,900 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1376617385] [2020-10-14 04:19:24,900 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:19:24,900 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:19:24,900 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248263722] [2020-10-14 04:19:24,901 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:19:24,901 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:19:24,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:19:24,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:19:24,901 INFO L87 Difference]: Start difference. First operand 36122 states and 38873 transitions. Second operand 7 states.