/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/Problem12_label25.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 02:47:35,395 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 02:47:35,397 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 02:47:35,420 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 02:47:35,420 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 02:47:35,421 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 02:47:35,422 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 02:47:35,424 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 02:47:35,426 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 02:47:35,426 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 02:47:35,427 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 02:47:35,428 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 02:47:35,429 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 02:47:35,430 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 02:47:35,431 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 02:47:35,432 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 02:47:35,432 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 02:47:35,433 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 02:47:35,435 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 02:47:35,436 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 02:47:35,438 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 02:47:35,439 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 02:47:35,440 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 02:47:35,440 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 02:47:35,443 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 02:47:35,443 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 02:47:35,443 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 02:47:35,444 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 02:47:35,444 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 02:47:35,445 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 02:47:35,445 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 02:47:35,446 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 02:47:35,447 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 02:47:35,447 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 02:47:35,448 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 02:47:35,448 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 02:47:35,449 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 02:47:35,449 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 02:47:35,449 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 02:47:35,450 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 02:47:35,451 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 02:47:35,452 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 02:47:35,481 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 02:47:35,481 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 02:47:35,483 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 02:47:35,483 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 02:47:35,483 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 02:47:35,484 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 02:47:35,484 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 02:47:35,484 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 02:47:35,484 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 02:47:35,485 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 02:47:35,485 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 02:47:35,486 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 02:47:35,486 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 02:47:35,486 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 02:47:35,487 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 02:47:35,487 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 02:47:35,487 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 02:47:35,488 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 02:47:35,488 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 02:47:35,488 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 02:47:35,488 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 02:47:35,489 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 02:47:35,489 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 02:47:35,489 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 02:47:35,489 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 02:47:35,489 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 02:47:35,490 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 02:47:35,490 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 02:47:35,490 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 02:47:35,490 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 02:47:35,789 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 02:47:35,801 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 02:47:35,804 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 02:47:35,806 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 02:47:35,806 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 02:47:35,807 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label25.c [2020-10-14 02:47:35,869 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9c2711cff/84d59b01cf454ab0867c55149aad8f34/FLAG917ce7000 [2020-10-14 02:47:36,690 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 02:47:36,691 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label25.c [2020-10-14 02:47:36,732 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9c2711cff/84d59b01cf454ab0867c55149aad8f34/FLAG917ce7000 [2020-10-14 02:47:37,204 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9c2711cff/84d59b01cf454ab0867c55149aad8f34 [2020-10-14 02:47:37,213 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 02:47:37,215 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 02:47:37,216 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 02:47:37,217 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 02:47:37,220 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 02:47:37,221 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 02:47:37" (1/1) ... [2020-10-14 02:47:37,224 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@532b1c07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:47:37, skipping insertion in model container [2020-10-14 02:47:37,224 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 02:47:37" (1/1) ... [2020-10-14 02:47:37,232 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 02:47:37,395 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 02:47:38,932 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 02:47:38,943 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 02:47:39,603 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 02:47:39,632 INFO L208 MainTranslator]: Completed translation [2020-10-14 02:47:39,633 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:47:39 WrapperNode [2020-10-14 02:47:39,634 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 02:47:39,634 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 02:47:39,635 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 02:47:39,635 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 02:47:39,648 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:47:39" (1/1) ... [2020-10-14 02:47:39,650 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:47:39" (1/1) ... [2020-10-14 02:47:39,694 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:47:39" (1/1) ... [2020-10-14 02:47:39,695 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:47:39" (1/1) ... [2020-10-14 02:47:39,805 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:47:39" (1/1) ... [2020-10-14 02:47:39,833 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:47:39" (1/1) ... [2020-10-14 02:47:39,879 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:47:39" (1/1) ... [2020-10-14 02:47:39,925 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 02:47:39,926 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 02:47:39,926 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 02:47:39,926 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 02:47:39,927 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:47:39" (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 02:47:39,993 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 02:47:39,993 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 02:47:39,993 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 02:47:39,994 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 02:47:39,994 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 02:47:39,994 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 02:47:39,994 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 02:47:39,994 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 02:47:39,995 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 02:47:39,995 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 02:47:39,995 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 02:47:39,995 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 02:47:39,995 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 02:47:39,995 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 02:47:39,996 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 02:47:39,996 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 02:47:39,996 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 02:47:44,787 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 02:47:44,788 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 02:47:44,799 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 02:47:44 BoogieIcfgContainer [2020-10-14 02:47:44,799 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 02:47:44,800 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 02:47:44,800 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 02:47:44,804 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 02:47:44,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 02:47:37" (1/3) ... [2020-10-14 02:47:44,805 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73faab0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 02:47:44, skipping insertion in model container [2020-10-14 02:47:44,805 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:47:39" (2/3) ... [2020-10-14 02:47:44,805 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73faab0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 02:47:44, skipping insertion in model container [2020-10-14 02:47:44,805 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 02:47:44" (3/3) ... [2020-10-14 02:47:44,807 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label25.c [2020-10-14 02:47:44,818 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 02:47:44,827 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 02:47:44,841 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 02:47:44,868 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 02:47:44,868 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 02:47:44,868 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 02:47:44,868 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 02:47:44,868 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 02:47:44,868 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 02:47:44,869 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 02:47:44,869 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 02:47:44,903 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states. [2020-10-14 02:47:44,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-14 02:47:44,909 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:47:44,910 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] [2020-10-14 02:47:44,911 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:47:44,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:47:44,917 INFO L82 PathProgramCache]: Analyzing trace with hash -996622542, now seen corresponding path program 1 times [2020-10-14 02:47:44,926 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:47:44,926 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [582279730] [2020-10-14 02:47:44,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:47:45,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:47:45,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:47:45,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:47:45,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 02:47:45,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:47:45,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 329 [2020-10-14 02:47:45,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:47:45,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:47:45,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 02:47:45,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 02:47:45,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 02:47:45,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 02:47:45,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:47:45,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:47:45,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:47:45,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:47:45,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:47:45,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:47:45,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 02:47:45,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:47:45,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:47:45,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:47:45,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:47:45,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 02:47:45,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:47:45,540 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 02:47:45,541 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [582279730] [2020-10-14 02:47:45,543 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 02:47:45,544 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 02:47:45,545 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966286197] [2020-10-14 02:47:45,550 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 02:47:45,550 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:47:45,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 02:47:45,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 02:47:45,567 INFO L87 Difference]: Start difference. First operand 839 states. Second operand 4 states. [2020-10-14 02:47:45,718 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2020-10-14 02:47:52,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:47:52,761 INFO L93 Difference]: Finished difference Result 2471 states and 4736 transitions. [2020-10-14 02:47:52,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:47:52,763 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-10-14 02:47:52,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:47:52,797 INFO L225 Difference]: With dead ends: 2471 [2020-10-14 02:47:52,797 INFO L226 Difference]: Without dead ends: 1568 [2020-10-14 02:47:52,809 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:47:52,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2020-10-14 02:47:52,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1553. [2020-10-14 02:47:52,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1553 states. [2020-10-14 02:47:52,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1553 states to 1553 states and 2725 transitions. [2020-10-14 02:47:52,951 INFO L78 Accepts]: Start accepts. Automaton has 1553 states and 2725 transitions. Word has length 23 [2020-10-14 02:47:52,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:47:52,952 INFO L479 AbstractCegarLoop]: Abstraction has 1553 states and 2725 transitions. [2020-10-14 02:47:52,952 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 02:47:52,952 INFO L276 IsEmpty]: Start isEmpty. Operand 1553 states and 2725 transitions. [2020-10-14 02:47:52,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-14 02:47:52,956 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:47:52,956 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 02:47:52,957 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 02:47:52,957 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:47:52,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:47:52,957 INFO L82 PathProgramCache]: Analyzing trace with hash -828064321, now seen corresponding path program 1 times [2020-10-14 02:47:52,958 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:47:52,958 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1293495176] [2020-10-14 02:47:52,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:47:53,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:47:53,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:47:53,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:47:53,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:47:53,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:47:53,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-14 02:47:53,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 02:47:53,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 960 [2020-10-14 02:47:53,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:47:53,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:47:53,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:47:53,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-14 02:47:53,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 02:47:53,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 02:47:54,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:47:54,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:47:54,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:47:54,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:47:54,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:47:54,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:47:54,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 02:47:54,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:47:54,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:47:54,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:47:54,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:47:54,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:47:54,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:47:54,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:47:54,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:47:54,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:47:54,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:47:54,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 02:47:54,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:47:54,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-14 02:47:54,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:47:54,139 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:47:54,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:47:54,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:47:54,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 02:47:54,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:47:54,184 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:47:54,184 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1293495176] [2020-10-14 02:47:54,185 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:47:54,185 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:47:54,185 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486151601] [2020-10-14 02:47:54,187 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:47:54,187 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:47:54,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:47:54,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:47:54,188 INFO L87 Difference]: Start difference. First operand 1553 states and 2725 transitions. Second operand 5 states. [2020-10-14 02:48:03,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:48:03,906 INFO L93 Difference]: Finished difference Result 4675 states and 8270 transitions. [2020-10-14 02:48:03,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:48:03,907 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 92 [2020-10-14 02:48:03,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:48:03,936 INFO L225 Difference]: With dead ends: 4675 [2020-10-14 02:48:03,936 INFO L226 Difference]: Without dead ends: 3128 [2020-10-14 02:48:03,941 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 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 02:48:03,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3128 states. [2020-10-14 02:48:04,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3128 to 3111. [2020-10-14 02:48:04,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3111 states. [2020-10-14 02:48:04,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3111 states to 3111 states and 4905 transitions. [2020-10-14 02:48:04,048 INFO L78 Accepts]: Start accepts. Automaton has 3111 states and 4905 transitions. Word has length 92 [2020-10-14 02:48:04,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:48:04,049 INFO L479 AbstractCegarLoop]: Abstraction has 3111 states and 4905 transitions. [2020-10-14 02:48:04,049 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:48:04,050 INFO L276 IsEmpty]: Start isEmpty. Operand 3111 states and 4905 transitions. [2020-10-14 02:48:04,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-14 02:48:04,057 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:48:04,057 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 02:48:04,058 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 02:48:04,058 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:48:04,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:48:04,058 INFO L82 PathProgramCache]: Analyzing trace with hash -1021628326, now seen corresponding path program 1 times [2020-10-14 02:48:04,058 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:48:04,059 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1748422193] [2020-10-14 02:48:04,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:48:04,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:48:04,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:48:04,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:48:04,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:48:04,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:48:04,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-14 02:48:04,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 02:48:04,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 765 [2020-10-14 02:48:04,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:48:04,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:48:04,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:48:04,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-14 02:48:04,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 02:48:04,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:48:04,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:48:04,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:48:04,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:48:04,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:48:04,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:48:04,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:48:04,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 02:48:04,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:48:04,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:48:04,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:48:04,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:48:04,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:48:04,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:48:04,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:48:04,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:48:04,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:48:05,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:48:05,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 02:48:05,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:48:05,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-14 02:48:05,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:48:05,023 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:48:05,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:48:05,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:48:05,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-14 02:48:05,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:48:05,056 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:48:05,056 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1748422193] [2020-10-14 02:48:05,057 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:48:05,057 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:48:05,057 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357750009] [2020-10-14 02:48:05,058 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:48:05,058 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:48:05,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:48:05,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:48:05,059 INFO L87 Difference]: Start difference. First operand 3111 states and 4905 transitions. Second operand 5 states. [2020-10-14 02:48:14,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:48:14,478 INFO L93 Difference]: Finished difference Result 9346 states and 14957 transitions. [2020-10-14 02:48:14,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:48:14,479 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 93 [2020-10-14 02:48:14,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:48:14,513 INFO L225 Difference]: With dead ends: 9346 [2020-10-14 02:48:14,514 INFO L226 Difference]: Without dead ends: 6241 [2020-10-14 02:48:14,521 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 02:48:14,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6241 states. [2020-10-14 02:48:14,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6241 to 6229. [2020-10-14 02:48:14,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6229 states. [2020-10-14 02:48:14,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6229 states to 6229 states and 8863 transitions. [2020-10-14 02:48:14,686 INFO L78 Accepts]: Start accepts. Automaton has 6229 states and 8863 transitions. Word has length 93 [2020-10-14 02:48:14,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:48:14,686 INFO L479 AbstractCegarLoop]: Abstraction has 6229 states and 8863 transitions. [2020-10-14 02:48:14,687 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:48:14,687 INFO L276 IsEmpty]: Start isEmpty. Operand 6229 states and 8863 transitions. [2020-10-14 02:48:14,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-14 02:48:14,690 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:48:14,690 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 02:48:14,691 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 02:48:14,691 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:48:14,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:48:14,691 INFO L82 PathProgramCache]: Analyzing trace with hash -1881741533, now seen corresponding path program 1 times [2020-10-14 02:48:14,692 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:48:14,693 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [131912205] [2020-10-14 02:48:14,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:48:14,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:48:14,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:48:14,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:48:15,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:48:15,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-14 02:48:15,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:48:15,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 439 [2020-10-14 02:48:15,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:48:15,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:48:15,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:48:15,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-14 02:48:15,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 02:48:15,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:48:15,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:48:15,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:48:15,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:48:15,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:48:15,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:48:15,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:48:15,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:48:15,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:48:15,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:48:15,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:48:15,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:48:15,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:48:15,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:48:15,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:48:15,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:48:15,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:48:15,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:48:15,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 02:48:15,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:48:15,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-14 02:48:15,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:48:15,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:48:15,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:48:15,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:48:15,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 02:48:15,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:48:15,339 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:48:15,340 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [131912205] [2020-10-14 02:48:15,340 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:48:15,340 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 02:48:15,341 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628737576] [2020-10-14 02:48:15,341 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 02:48:15,341 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:48:15,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 02:48:15,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 02:48:15,342 INFO L87 Difference]: Start difference. First operand 6229 states and 8863 transitions. Second operand 6 states. [2020-10-14 02:48:25,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:48:25,651 INFO L93 Difference]: Finished difference Result 15575 states and 23094 transitions. [2020-10-14 02:48:25,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:48:25,653 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 94 [2020-10-14 02:48:25,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:48:25,697 INFO L225 Difference]: With dead ends: 15575 [2020-10-14 02:48:25,697 INFO L226 Difference]: Without dead ends: 9352 [2020-10-14 02:48:25,713 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 02:48:25,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9352 states. [2020-10-14 02:48:25,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9352 to 9332. [2020-10-14 02:48:25,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9332 states. [2020-10-14 02:48:26,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9332 states to 9332 states and 13397 transitions. [2020-10-14 02:48:26,010 INFO L78 Accepts]: Start accepts. Automaton has 9332 states and 13397 transitions. Word has length 94 [2020-10-14 02:48:26,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:48:26,013 INFO L479 AbstractCegarLoop]: Abstraction has 9332 states and 13397 transitions. [2020-10-14 02:48:26,013 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 02:48:26,013 INFO L276 IsEmpty]: Start isEmpty. Operand 9332 states and 13397 transitions. [2020-10-14 02:48:26,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-14 02:48:26,022 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:48:26,022 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 02:48:26,022 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 02:48:26,022 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:48:26,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:48:26,023 INFO L82 PathProgramCache]: Analyzing trace with hash 1111849118, now seen corresponding path program 1 times [2020-10-14 02:48:26,023 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:48:26,024 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1292128129] [2020-10-14 02:48:26,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:48:26,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:48:26,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:48:26,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:48:26,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:48:26,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-14 02:48:26,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:48:26,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 616 [2020-10-14 02:48:26,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:48:26,669 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:48:26,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:48:26,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-10-14 02:48:26,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 02:48:26,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:48:26,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:48:26,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:48:26,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:48:26,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:48:26,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:48:26,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:48:26,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:48:26,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:48:26,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:48:26,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:48:26,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:48:26,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:48:26,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:48:26,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:48:26,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:48:26,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:48:26,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:48:26,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-14 02:48:26,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:48:26,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-14 02:48:26,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:48:26,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:48:26,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:48:26,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:48:26,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-14 02:48:26,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:48:26,883 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:48:26,884 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1292128129] [2020-10-14 02:48:26,884 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:48:26,884 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:48:26,884 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684479494] [2020-10-14 02:48:26,885 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:48:26,885 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:48:26,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:48:26,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:48:26,886 INFO L87 Difference]: Start difference. First operand 9332 states and 13397 transitions. Second operand 5 states. [2020-10-14 02:48:36,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:48:36,201 INFO L93 Difference]: Finished difference Result 27976 states and 41251 transitions. [2020-10-14 02:48:36,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:48:36,203 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 111 [2020-10-14 02:48:36,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:48:36,271 INFO L225 Difference]: With dead ends: 27976 [2020-10-14 02:48:36,271 INFO L226 Difference]: Without dead ends: 18650 [2020-10-14 02:48:36,296 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 02:48:36,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18650 states. [2020-10-14 02:48:36,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18650 to 18638. [2020-10-14 02:48:36,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18638 states. [2020-10-14 02:48:36,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18638 states to 18638 states and 24519 transitions. [2020-10-14 02:48:36,760 INFO L78 Accepts]: Start accepts. Automaton has 18638 states and 24519 transitions. Word has length 111 [2020-10-14 02:48:36,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:48:36,761 INFO L479 AbstractCegarLoop]: Abstraction has 18638 states and 24519 transitions. [2020-10-14 02:48:36,761 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:48:36,761 INFO L276 IsEmpty]: Start isEmpty. Operand 18638 states and 24519 transitions. [2020-10-14 02:48:36,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-14 02:48:36,764 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:48:36,764 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 02:48:36,764 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 02:48:36,764 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:48:36,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:48:36,765 INFO L82 PathProgramCache]: Analyzing trace with hash -1279454477, now seen corresponding path program 1 times [2020-10-14 02:48:36,765 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:48:36,765 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1176917863] [2020-10-14 02:48:36,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:48:36,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:48:36,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:48:36,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:48:37,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:48:37,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-14 02:48:37,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:48:37,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 595 [2020-10-14 02:48:37,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:48:37,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:48:37,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:48:37,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 121 [2020-10-14 02:48:37,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 02:48:37,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:48:37,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:48:37,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:48:37,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:48:37,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:48:37,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:48:37,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:48:37,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:48:37,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:48:37,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:48:37,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:48:37,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:48:37,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:48:37,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:48:37,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:48:37,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:48:37,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:48:37,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:48:37,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 02:48:37,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:48:37,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 196 [2020-10-14 02:48:37,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:48:37,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:48:37,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:48:37,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:48:37,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 02:48:37,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:48:37,759 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:48:37,759 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1176917863] [2020-10-14 02:48:37,760 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:48:37,760 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:48:37,761 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478159749] [2020-10-14 02:48:37,761 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:48:37,761 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:48:37,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:48:37,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:48:37,762 INFO L87 Difference]: Start difference. First operand 18638 states and 24519 transitions. Second operand 5 states. [2020-10-14 02:48:48,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:48:48,884 INFO L93 Difference]: Finished difference Result 54332 states and 73810 transitions. [2020-10-14 02:48:48,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:48:48,886 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 134 [2020-10-14 02:48:48,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:48:49,027 INFO L225 Difference]: With dead ends: 54332 [2020-10-14 02:48:49,027 INFO L226 Difference]: Without dead ends: 35700 [2020-10-14 02:48:49,075 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 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 02:48:49,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35700 states. [2020-10-14 02:48:50,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35700 to 35688. [2020-10-14 02:48:50,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35688 states. [2020-10-14 02:48:50,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35688 states to 35688 states and 46301 transitions. [2020-10-14 02:48:50,773 INFO L78 Accepts]: Start accepts. Automaton has 35688 states and 46301 transitions. Word has length 134 [2020-10-14 02:48:50,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:48:50,774 INFO L479 AbstractCegarLoop]: Abstraction has 35688 states and 46301 transitions. [2020-10-14 02:48:50,774 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:48:50,774 INFO L276 IsEmpty]: Start isEmpty. Operand 35688 states and 46301 transitions. [2020-10-14 02:48:50,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-10-14 02:48:50,778 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:48:50,778 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:48:50,778 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 02:48:50,779 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:48:50,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:48:50,779 INFO L82 PathProgramCache]: Analyzing trace with hash 883190242, now seen corresponding path program 1 times [2020-10-14 02:48:50,779 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:48:50,779 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1909830031] [2020-10-14 02:48:50,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:48:50,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:48:50,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:48:50,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:48:51,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:48:51,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:48:53,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:48:53,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-14 02:48:53,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 02:48:53,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2569 [2020-10-14 02:48:53,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:48:53,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:48:53,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:48:53,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-14 02:48:53,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-14 02:48:53,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:48:53,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:48:53,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:48:53,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:48:53,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:48:53,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:48:53,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:48:53,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:48:53,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:48:53,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:48:53,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:48:53,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:48:53,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:48:53,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:48:53,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:48:53,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:48:53,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:48:53,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:48:53,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 02:48:53,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:48:53,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-14 02:48:53,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:48:53,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:48:53,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:48:53,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:48:53,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 02:48:53,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 02:48:53,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-14 02:48:53,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:48:53,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:48:53,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:48:53,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 02:48:53,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:48:53,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-14 02:48:53,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:48:53,720 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:48:53,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:48:53,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:48:53,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 02:48:53,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:48:53,902 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 98 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 02:48:53,903 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1909830031] [2020-10-14 02:48:53,903 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:48:53,903 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:48:53,905 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283425636] [2020-10-14 02:48:53,906 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:48:53,906 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:48:53,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:48:53,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:48:53,910 INFO L87 Difference]: Start difference. First operand 35688 states and 46301 transitions. Second operand 7 states. [2020-10-14 02:49:14,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:49:14,803 INFO L93 Difference]: Finished difference Result 82280 states and 115559 transitions. [2020-10-14 02:49:14,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 02:49:14,805 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 169 [2020-10-14 02:49:14,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:49:14,983 INFO L225 Difference]: With dead ends: 82280 [2020-10-14 02:49:14,983 INFO L226 Difference]: Without dead ends: 46598 [2020-10-14 02:49:15,039 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-14 02:49:15,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46598 states. [2020-10-14 02:49:15,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46598 to 46253. [2020-10-14 02:49:15,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46253 states. [2020-10-14 02:49:16,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46253 states to 46253 states and 61073 transitions. [2020-10-14 02:49:16,018 INFO L78 Accepts]: Start accepts. Automaton has 46253 states and 61073 transitions. Word has length 169 [2020-10-14 02:49:16,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:49:16,019 INFO L479 AbstractCegarLoop]: Abstraction has 46253 states and 61073 transitions. [2020-10-14 02:49:16,019 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:49:16,020 INFO L276 IsEmpty]: Start isEmpty. Operand 46253 states and 61073 transitions. [2020-10-14 02:49:16,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-10-14 02:49:16,031 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:49:16,031 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:49:16,032 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 02:49:16,032 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:49:16,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:49:16,033 INFO L82 PathProgramCache]: Analyzing trace with hash 313824446, now seen corresponding path program 1 times [2020-10-14 02:49:16,033 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:49:16,033 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [754106063] [2020-10-14 02:49:16,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:49:16,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:49:16,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:49:16,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:49:16,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:49:17,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:49:19,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:49:19,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 215 [2020-10-14 02:49:19,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 02:49:19,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3220 [2020-10-14 02:49:19,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:49:19,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:49:19,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:49:19,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-14 02:49:19,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-14 02:49:19,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:49:19,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:49:19,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:49:19,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:49:19,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:49:19,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:49:19,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:49:19,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 02:49:19,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:49:19,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:49:19,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:49:19,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:49:19,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:49:19,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:49:19,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:49:19,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:49:19,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:49:19,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:49:19,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-14 02:49:19,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:49:19,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-14 02:49:19,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:49:19,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:49:19,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:49:19,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:49:19,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-14 02:49:19,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:49:19,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-14 02:49:19,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:49:19,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:49:19,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:49:19,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 02:49:19,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:49:19,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-14 02:49:19,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:49:19,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:49:19,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:49:19,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:49:19,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 02:49:19,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:49:19,923 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 106 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 02:49:19,923 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [754106063] [2020-10-14 02:49:19,924 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:49:19,924 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:49:19,925 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429219192] [2020-10-14 02:49:19,926 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:49:19,926 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:49:19,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:49:19,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:49:19,927 INFO L87 Difference]: Start difference. First operand 46253 states and 61073 transitions. Second operand 7 states. [2020-10-14 02:49:33,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:49:33,283 INFO L93 Difference]: Finished difference Result 93773 states and 127821 transitions. [2020-10-14 02:49:33,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 02:49:33,285 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 203 [2020-10-14 02:49:33,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:49:33,396 INFO L225 Difference]: With dead ends: 93773 [2020-10-14 02:49:33,396 INFO L226 Difference]: Without dead ends: 47530 [2020-10-14 02:49:33,484 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 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 02:49:33,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47530 states. [2020-10-14 02:49:34,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47530 to 43582. [2020-10-14 02:49:34,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43582 states. [2020-10-14 02:49:34,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43582 states to 43582 states and 54977 transitions. [2020-10-14 02:49:34,154 INFO L78 Accepts]: Start accepts. Automaton has 43582 states and 54977 transitions. Word has length 203 [2020-10-14 02:49:34,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:49:34,155 INFO L479 AbstractCegarLoop]: Abstraction has 43582 states and 54977 transitions. [2020-10-14 02:49:34,155 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:49:34,155 INFO L276 IsEmpty]: Start isEmpty. Operand 43582 states and 54977 transitions. [2020-10-14 02:49:34,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2020-10-14 02:49:34,163 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:49:34,164 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:49:34,164 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 02:49:34,164 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:49:34,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:49:34,165 INFO L82 PathProgramCache]: Analyzing trace with hash -1355107614, now seen corresponding path program 1 times [2020-10-14 02:49:34,165 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:49:34,165 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [42966361] [2020-10-14 02:49:34,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:49:34,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:49:34,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:49:34,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:49:34,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:49:37,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:49:37,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 281 [2020-10-14 02:49:37,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 02:49:37,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3408 [2020-10-14 02:49:37,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:49:37,610 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:49:37,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:49:37,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-14 02:49:37,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-10-14 02:49:37,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:49:37,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:49:37,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:49:37,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:49:37,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:49:37,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:49:37,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:49:37,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:49:37,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:49:37,688 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:49:37,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:49:37,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:49:37,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:49:37,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:49:37,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:49:37,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:49:37,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:49:37,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:49:37,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-14 02:49:37,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:49:37,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-14 02:49:37,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:49:37,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:49:37,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:49:37,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:49:37,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-14 02:49:37,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:49:37,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-14 02:49:37,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:49:37,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:49:39,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:49:39,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-14 02:49:39,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:49:39,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1656 [2020-10-14 02:49:39,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:49:39,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:49:39,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:49:39,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:49:39,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-14 02:49:39,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:49:39,836 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 132 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 02:49:39,843 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [42966361] [2020-10-14 02:49:39,844 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:49:39,844 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:49:39,845 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890431228] [2020-10-14 02:49:39,846 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:49:39,846 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:49:39,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:49:39,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:49:39,847 INFO L87 Difference]: Start difference. First operand 43582 states and 54977 transitions. Second operand 7 states. [2020-10-14 02:49:59,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:49:59,920 INFO L93 Difference]: Finished difference Result 102072 states and 133915 transitions. [2020-10-14 02:49:59,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 02:49:59,922 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 269 [2020-10-14 02:49:59,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:50:00,098 INFO L225 Difference]: With dead ends: 102072 [2020-10-14 02:50:00,098 INFO L226 Difference]: Without dead ends: 56924 [2020-10-14 02:50:00,184 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 02:50:00,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56924 states. [2020-10-14 02:50:01,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56924 to 56817. [2020-10-14 02:50:01,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56817 states. [2020-10-14 02:50:01,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56817 states to 56817 states and 73535 transitions. [2020-10-14 02:50:01,516 INFO L78 Accepts]: Start accepts. Automaton has 56817 states and 73535 transitions. Word has length 269 [2020-10-14 02:50:01,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:50:01,517 INFO L479 AbstractCegarLoop]: Abstraction has 56817 states and 73535 transitions. [2020-10-14 02:50:01,517 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:50:01,518 INFO L276 IsEmpty]: Start isEmpty. Operand 56817 states and 73535 transitions. [2020-10-14 02:50:01,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2020-10-14 02:50:01,542 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:50:01,543 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:50:01,543 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 02:50:01,543 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:50:01,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:50:01,544 INFO L82 PathProgramCache]: Analyzing trace with hash 354979294, now seen corresponding path program 1 times [2020-10-14 02:50:01,544 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:50:01,546 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1861371567] [2020-10-14 02:50:01,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:50:01,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:50:01,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:50:02,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:50:02,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:50:04,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:50:04,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 299 [2020-10-14 02:50:04,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 02:50:04,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2777 [2020-10-14 02:50:04,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:50:04,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:50:04,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:50:04,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 131 [2020-10-14 02:50:04,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-10-14 02:50:04,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:50:04,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:50:04,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:50:04,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:50:04,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:50:04,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:50:04,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:50:04,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:50:04,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:50:04,519 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:50:04,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:50:04,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:50:04,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:50:04,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:50:04,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:50:04,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:50:04,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:50:04,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:50:04,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-14 02:50:04,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:50:04,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-14 02:50:04,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:50:04,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:50:04,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:50:04,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:50:04,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-14 02:50:04,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:50:04,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-10-14 02:50:04,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:50:04,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:50:05,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:50:05,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-14 02:50:05,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:50:05,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 451 [2020-10-14 02:50:05,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:50:05,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:50:05,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:50:05,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:50:05,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-14 02:50:05,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:50:05,396 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 150 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 02:50:05,397 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1861371567] [2020-10-14 02:50:05,397 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:50:05,397 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 02:50:05,398 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302507749] [2020-10-14 02:50:05,398 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 02:50:05,398 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:50:05,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 02:50:05,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 02:50:05,399 INFO L87 Difference]: Start difference. First operand 56817 states and 73535 transitions. Second operand 8 states. [2020-10-14 02:50:28,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:50:28,477 INFO L93 Difference]: Finished difference Result 155098 states and 207761 transitions. [2020-10-14 02:50:28,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 02:50:28,479 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 287 [2020-10-14 02:50:28,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:50:28,721 INFO L225 Difference]: With dead ends: 155098 [2020-10-14 02:50:28,721 INFO L226 Difference]: Without dead ends: 98287 [2020-10-14 02:50:28,809 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-14 02:50:28,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98287 states. [2020-10-14 02:50:30,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98287 to 95936. [2020-10-14 02:50:30,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95936 states. [2020-10-14 02:50:30,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95936 states to 95936 states and 123494 transitions. [2020-10-14 02:50:30,824 INFO L78 Accepts]: Start accepts. Automaton has 95936 states and 123494 transitions. Word has length 287 [2020-10-14 02:50:30,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:50:30,825 INFO L479 AbstractCegarLoop]: Abstraction has 95936 states and 123494 transitions. [2020-10-14 02:50:30,825 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 02:50:30,825 INFO L276 IsEmpty]: Start isEmpty. Operand 95936 states and 123494 transitions. [2020-10-14 02:50:30,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2020-10-14 02:50:30,842 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:50:30,842 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 02:50:30,842 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 02:50:30,842 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:50:30,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:50:30,843 INFO L82 PathProgramCache]: Analyzing trace with hash 43672698, now seen corresponding path program 1 times [2020-10-14 02:50:30,843 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:50:30,843 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [533320973] [2020-10-14 02:50:30,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:50:30,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:50:30,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:50:30,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:50:31,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:50:31,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:50:32,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:50:32,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:50:35,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:50:35,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 317 [2020-10-14 02:50:35,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 02:50:35,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-14 02:50:35,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:50:35,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:50:35,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:50:35,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-14 02:50:35,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-14 02:50:35,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:50:35,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:50:35,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:50:35,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:50:35,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:50:35,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:50:35,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:50:35,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:50:35,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:50:35,972 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:50:35,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:50:35,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:50:35,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:50:35,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:50:35,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:50:36,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:50:36,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:50:36,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:50:36,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-14 02:50:36,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:50:36,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-14 02:50:36,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:50:36,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:50:36,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:50:36,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:50:36,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 02:50:36,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:50:36,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-14 02:50:36,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:50:36,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:50:36,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:50:36,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-14 02:50:36,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:50:36,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-14 02:50:36,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:50:36,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:50:36,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:50:36,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:50:36,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-14 02:50:36,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:50:36,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-10-14 02:50:36,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:50:36,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:50:36,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:50:36,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 02:50:36,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:50:36,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 02:50:36,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:50:36,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:50:36,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:50:36,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-10-14 02:50:36,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:50:36,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:50:36,361 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 132 proven. 76 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-10-14 02:50:36,362 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [533320973] [2020-10-14 02:50:36,362 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:50:36,362 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:50:36,362 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973079332] [2020-10-14 02:50:36,363 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:50:36,363 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:50:36,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:50:36,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:50:36,364 INFO L87 Difference]: Start difference. First operand 95936 states and 123494 transitions. Second operand 7 states. [2020-10-14 02:50:51,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:50:51,953 INFO L93 Difference]: Finished difference Result 170829 states and 218425 transitions. [2020-10-14 02:50:51,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 02:50:51,956 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 303 [2020-10-14 02:50:51,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:50:52,103 INFO L225 Difference]: With dead ends: 170829 [2020-10-14 02:50:52,103 INFO L226 Difference]: Without dead ends: 74999 [2020-10-14 02:50:52,186 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 02:50:52,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74999 states. [2020-10-14 02:50:52,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74999 to 74768. [2020-10-14 02:50:52,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74768 states. [2020-10-14 02:50:53,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74768 states to 74768 states and 86497 transitions. [2020-10-14 02:50:53,055 INFO L78 Accepts]: Start accepts. Automaton has 74768 states and 86497 transitions. Word has length 303 [2020-10-14 02:50:53,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:50:53,056 INFO L479 AbstractCegarLoop]: Abstraction has 74768 states and 86497 transitions. [2020-10-14 02:50:53,056 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:50:53,056 INFO L276 IsEmpty]: Start isEmpty. Operand 74768 states and 86497 transitions. [2020-10-14 02:50:53,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2020-10-14 02:50:53,065 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:50:53,065 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 02:50:53,066 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 02:50:53,066 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:50:53,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:50:53,066 INFO L82 PathProgramCache]: Analyzing trace with hash -90678962, now seen corresponding path program 1 times [2020-10-14 02:50:53,067 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:50:53,067 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1963909722] [2020-10-14 02:50:53,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:50:53,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:50:53,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:50:53,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:50:53,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:50:54,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:50:57,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:50:58,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:50:58,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 323 [2020-10-14 02:50:58,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 02:50:58,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-14 02:50:58,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:50:58,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:50:58,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:50:58,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-14 02:50:58,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-14 02:50:58,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:50:58,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:50:58,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:50:58,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:50:58,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:50:58,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:50:58,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:50:58,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:50:58,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:50:58,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:50:58,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:50:58,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:50:58,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:50:58,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:50:58,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:50:58,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:50:58,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:50:58,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:50:58,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-14 02:50:58,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:50:58,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-14 02:50:58,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:50:58,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:50:58,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:50:58,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:50:58,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 02:50:58,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:50:58,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-14 02:50:58,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:50:58,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:50:58,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:50:58,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-14 02:50:58,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:50:58,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-10-14 02:50:58,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:50:58,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:50:58,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:50:58,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:50:58,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-14 02:50:58,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:50:58,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2020-10-14 02:50:58,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:50:58,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:50:58,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:50:58,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 02:50:58,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:50:58,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 02:50:58,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:50:58,660 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:50:58,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:50:58,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-10-14 02:50:58,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:50:58,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:50:58,760 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 132 proven. 76 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-10-14 02:50:58,761 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1963909722] [2020-10-14 02:50:58,761 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:50:58,761 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:50:58,761 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260179128] [2020-10-14 02:50:58,762 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:50:58,763 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:50:58,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:50:58,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:50:58,763 INFO L87 Difference]: Start difference. First operand 74768 states and 86497 transitions. Second operand 7 states. [2020-10-14 02:51:17,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:51:17,049 INFO L93 Difference]: Finished difference Result 151952 states and 176044 transitions. [2020-10-14 02:51:17,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 02:51:17,051 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 309 [2020-10-14 02:51:17,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:51:17,180 INFO L225 Difference]: With dead ends: 151952 [2020-10-14 02:51:17,181 INFO L226 Difference]: Without dead ends: 74866 [2020-10-14 02:51:17,265 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 02:51:17,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74866 states. [2020-10-14 02:51:17,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74866 to 69345. [2020-10-14 02:51:17,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69345 states. [2020-10-14 02:51:18,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69345 states to 69345 states and 77236 transitions. [2020-10-14 02:51:18,013 INFO L78 Accepts]: Start accepts. Automaton has 69345 states and 77236 transitions. Word has length 309 [2020-10-14 02:51:18,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:51:18,013 INFO L479 AbstractCegarLoop]: Abstraction has 69345 states and 77236 transitions. [2020-10-14 02:51:18,013 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:51:18,013 INFO L276 IsEmpty]: Start isEmpty. Operand 69345 states and 77236 transitions. [2020-10-14 02:51:18,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 418 [2020-10-14 02:51:18,029 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:51:18,029 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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 02:51:18,029 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 02:51:18,030 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:51:18,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:51:18,030 INFO L82 PathProgramCache]: Analyzing trace with hash 1779981562, now seen corresponding path program 1 times [2020-10-14 02:51:18,030 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:51:18,030 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [889391330] [2020-10-14 02:51:18,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:51:18,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:51:18,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:51:18,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:51:18,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking...