/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=1.0 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_4-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 08:54:12,698 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 08:54:12,702 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 08:54:12,729 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 08:54:12,729 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 08:54:12,730 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 08:54:12,732 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 08:54:12,734 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 08:54:12,736 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 08:54:12,737 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 08:54:12,738 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 08:54:12,739 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 08:54:12,740 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 08:54:12,741 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 08:54:12,742 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 08:54:12,743 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 08:54:12,744 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 08:54:12,746 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 08:54:12,747 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 08:54:12,750 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 08:54:12,751 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 08:54:12,753 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 08:54:12,754 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 08:54:12,755 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 08:54:12,758 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 08:54:12,758 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 08:54:12,758 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 08:54:12,759 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 08:54:12,760 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 08:54:12,761 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 08:54:12,761 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 08:54:12,762 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 08:54:12,763 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 08:54:12,764 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 08:54:12,765 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 08:54:12,766 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 08:54:12,767 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 08:54:12,767 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 08:54:12,767 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 08:54:12,768 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 08:54:12,769 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 08:54:12,770 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 08:54:12,815 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 08:54:12,815 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 08:54:12,817 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 08:54:12,817 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 08:54:12,817 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 08:54:12,817 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 08:54:12,818 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 08:54:12,818 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 08:54:12,819 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 08:54:12,819 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 08:54:12,820 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 08:54:12,820 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 08:54:12,820 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 08:54:12,821 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 08:54:12,821 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 08:54:12,822 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 08:54:12,822 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 08:54:12,822 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 08:54:12,822 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 08:54:12,822 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 08:54:12,823 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 08:54:12,823 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 08:54:12,823 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 08:54:12,823 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 08:54:12,824 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 08:54:12,824 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 08:54:12,824 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 08:54:12,824 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 08:54:12,824 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 08:54:12,825 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; [2020-09-25 08:54:13,324 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 08:54:13,346 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 08:54:13,351 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 08:54:13,353 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 08:54:13,353 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 08:54:13,356 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_4-2.c [2020-09-25 08:54:13,451 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cf2644e10/813e4bb0bd9a404e81fb54cd109f999b/FLAG9fa27bc51 [2020-09-25 08:54:14,002 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 08:54:14,003 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_2calls_4-2.c [2020-09-25 08:54:14,013 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cf2644e10/813e4bb0bd9a404e81fb54cd109f999b/FLAG9fa27bc51 [2020-09-25 08:54:14,346 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cf2644e10/813e4bb0bd9a404e81fb54cd109f999b [2020-09-25 08:54:14,361 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 08:54:14,368 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 08:54:14,369 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 08:54:14,373 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 08:54:14,377 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 08:54:14,378 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 08:54:14" (1/1) ... [2020-09-25 08:54:14,383 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63cc40f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:54:14, skipping insertion in model container [2020-09-25 08:54:14,383 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 08:54:14" (1/1) ... [2020-09-25 08:54:14,393 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 08:54:14,418 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 08:54:14,647 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 08:54:14,653 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 08:54:14,675 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 08:54:14,693 INFO L208 MainTranslator]: Completed translation [2020-09-25 08:54:14,694 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:54:14 WrapperNode [2020-09-25 08:54:14,694 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 08:54:14,695 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 08:54:14,695 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 08:54:14,695 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 08:54:14,714 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:54:14" (1/1) ... [2020-09-25 08:54:14,714 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:54:14" (1/1) ... [2020-09-25 08:54:14,721 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:54:14" (1/1) ... [2020-09-25 08:54:14,722 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:54:14" (1/1) ... [2020-09-25 08:54:14,807 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:54:14" (1/1) ... [2020-09-25 08:54:14,810 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:54:14" (1/1) ... [2020-09-25 08:54:14,811 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:54:14" (1/1) ... [2020-09-25 08:54:14,813 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 08:54:14,814 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 08:54:14,814 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 08:54:14,814 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 08:54:14,815 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:54:14" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 08:54:14,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 08:54:14,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 08:54:14,891 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2020-09-25 08:54:14,891 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2020-09-25 08:54:14,891 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 08:54:14,891 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 08:54:14,891 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 08:54:14,891 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2020-09-25 08:54:14,892 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2020-09-25 08:54:14,892 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 08:54:14,892 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 08:54:14,892 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 08:54:15,138 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 08:54:15,138 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 08:54:15,146 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 08:54:15 BoogieIcfgContainer [2020-09-25 08:54:15,146 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 08:54:15,148 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 08:54:15,148 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 08:54:15,152 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 08:54:15,152 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 08:54:14" (1/3) ... [2020-09-25 08:54:15,153 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75437766 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 08:54:15, skipping insertion in model container [2020-09-25 08:54:15,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:54:14" (2/3) ... [2020-09-25 08:54:15,154 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75437766 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 08:54:15, skipping insertion in model container [2020-09-25 08:54:15,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 08:54:15" (3/3) ... [2020-09-25 08:54:15,157 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_2calls_4-2.c [2020-09-25 08:54:15,172 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 08:54:15,185 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 08:54:15,224 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 08:54:15,282 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 08:54:15,282 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 08:54:15,282 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 08:54:15,283 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 08:54:15,283 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 08:54:15,283 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 08:54:15,283 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 08:54:15,284 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 08:54:15,306 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-09-25 08:54:15,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 08:54:15,313 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:54:15,314 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:54:15,314 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:54:15,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:54:15,321 INFO L82 PathProgramCache]: Analyzing trace with hash -1089710179, now seen corresponding path program 1 times [2020-09-25 08:54:15,330 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:54:15,331 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2145520547] [2020-09-25 08:54:15,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:54:15,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:15,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:15,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:15,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:15,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 08:54:15,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:54:15,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 204 [2020-09-25 08:54:15,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:15,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:15,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:54:15,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 08:54:15,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 08:54:15,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 08:54:15,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:54:15,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:15,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:15,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:15,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:54:15,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:54:15,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 08:54:15,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:15,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:15,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:54:15,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:54:15,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:54:15,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:54:15,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 08:54:15,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:15,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:15,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:15,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:54:15,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:54:15,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 08:54:15,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:15,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:15,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 08:54:15,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:54:15,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:54:15,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:54:15,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 08:54:15,811 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2145520547] [2020-09-25 08:54:15,813 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:54:15,814 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 08:54:15,816 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686457239] [2020-09-25 08:54:15,823 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 08:54:15,824 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:54:15,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 08:54:15,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 08:54:15,842 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 5 states. [2020-09-25 08:54:15,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:54:15,961 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2020-09-25 08:54:15,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 08:54:15,964 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 08:54:15,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:54:15,985 INFO L225 Difference]: With dead ends: 58 [2020-09-25 08:54:15,986 INFO L226 Difference]: Without dead ends: 42 [2020-09-25 08:54:15,990 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 08:54:16,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-25 08:54:16,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-09-25 08:54:16,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 08:54:16,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-25 08:54:16,049 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 16 [2020-09-25 08:54:16,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:54:16,050 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-25 08:54:16,050 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 08:54:16,051 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-25 08:54:16,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-25 08:54:16,053 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:54:16,053 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:54:16,054 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 08:54:16,054 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:54:16,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:54:16,055 INFO L82 PathProgramCache]: Analyzing trace with hash -653728005, now seen corresponding path program 1 times [2020-09-25 08:54:16,055 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:54:16,055 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [721536756] [2020-09-25 08:54:16,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:54:16,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:16,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:16,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:16,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:16,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 08:54:16,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:54:16,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-09-25 08:54:16,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:16,236 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:16,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:54:16,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 08:54:16,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 08:54:16,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 08:54:16,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:54:16,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:16,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:16,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:16,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:54:16,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:54:16,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 08:54:16,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:16,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:16,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:54:16,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:54:16,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:54:16,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 08:54:16,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 08:54:16,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:16,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:16,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:16,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 08:54:16,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:54:16,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-09-25 08:54:16,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:16,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:16,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:54:16,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 08:54:16,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 08:54:16,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:54:16,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 08:54:16,369 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [721536756] [2020-09-25 08:54:16,369 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:54:16,370 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 08:54:16,370 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784418919] [2020-09-25 08:54:16,372 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 08:54:16,372 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:54:16,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 08:54:16,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 08:54:16,373 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 5 states. [2020-09-25 08:54:16,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:54:16,452 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2020-09-25 08:54:16,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 08:54:16,453 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-25 08:54:16,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:54:16,455 INFO L225 Difference]: With dead ends: 50 [2020-09-25 08:54:16,455 INFO L226 Difference]: Without dead ends: 44 [2020-09-25 08:54:16,456 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 08:54:16,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-25 08:54:16,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2020-09-25 08:54:16,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 08:54:16,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-25 08:54:16,467 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 17 [2020-09-25 08:54:16,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:54:16,467 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-25 08:54:16,467 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 08:54:16,468 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-25 08:54:16,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 08:54:16,469 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:54:16,470 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:54:16,470 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 08:54:16,470 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:54:16,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:54:16,471 INFO L82 PathProgramCache]: Analyzing trace with hash -1617834856, now seen corresponding path program 1 times [2020-09-25 08:54:16,471 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:54:16,471 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1519546177] [2020-09-25 08:54:16,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:54:16,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:16,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:16,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:16,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:16,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:18,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:18,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 08:54:18,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 08:54:18,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2042 [2020-09-25 08:54:18,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:18,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:18,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 08:54:18,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 08:54:18,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 08:54:18,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:54:18,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:54:18,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:18,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:18,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:18,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:54:18,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:54:18,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:54:18,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:18,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:18,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:54:18,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:54:18,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:54:18,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:54:18,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 08:54:18,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:18,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:18,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:18,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:18,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 08:54:18,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:54:18,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 329 [2020-09-25 08:54:18,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:18,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:18,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 08:54:18,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:54:18,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 08:54:18,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:54:18,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:54:18,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:18,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:18,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:18,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:54:18,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:54:18,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 08:54:18,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:18,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:18,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 08:54:18,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:54:18,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:54:18,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:54:18,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 08:54:18,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:18,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:19,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:19,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:54:19,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:54:19,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 08:54:19,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:19,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:19,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:54:19,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:54:19,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 08:54:19,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:54:19,030 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-25 08:54:19,031 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1519546177] [2020-09-25 08:54:19,031 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:54:19,032 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 08:54:19,032 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749745799] [2020-09-25 08:54:19,033 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 08:54:19,033 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:54:19,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 08:54:19,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-25 08:54:19,034 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 8 states. [2020-09-25 08:54:19,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:54:19,128 INFO L93 Difference]: Finished difference Result 63 states and 75 transitions. [2020-09-25 08:54:19,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 08:54:19,129 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 33 [2020-09-25 08:54:19,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:54:19,132 INFO L225 Difference]: With dead ends: 63 [2020-09-25 08:54:19,132 INFO L226 Difference]: Without dead ends: 57 [2020-09-25 08:54:19,133 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-09-25 08:54:19,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-09-25 08:54:19,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 50. [2020-09-25 08:54:19,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 08:54:19,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2020-09-25 08:54:19,144 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 33 [2020-09-25 08:54:19,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:54:19,145 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2020-09-25 08:54:19,145 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 08:54:19,145 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2020-09-25 08:54:19,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-25 08:54:19,148 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:54:19,148 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:54:19,148 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 08:54:19,148 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:54:19,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:54:19,149 INFO L82 PathProgramCache]: Analyzing trace with hash -159162515, now seen corresponding path program 1 times [2020-09-25 08:54:19,149 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:54:19,149 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [433504864] [2020-09-25 08:54:19,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:54:19,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:19,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:19,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:19,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:19,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:19,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:19,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:22,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:22,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 08:54:22,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 08:54:22,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3427 [2020-09-25 08:54:22,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:22,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:22,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 08:54:22,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 08:54:22,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 08:54:22,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:54:22,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:54:22,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:22,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:22,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:22,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:54:22,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:54:22,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:54:22,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:22,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:22,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:54:22,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:54:22,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:54:22,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:54:22,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 08:54:22,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:22,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:22,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:22,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:22,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:23,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:23,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 08:54:23,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 08:54:23,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 908 [2020-09-25 08:54:23,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:23,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:23,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 08:54:23,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:54:23,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 08:54:23,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:54:23,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:54:23,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:23,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:23,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:23,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:54:23,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:54:23,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 08:54:23,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:23,638 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:23,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 08:54:23,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:54:23,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:54:23,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:54:23,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 08:54:23,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:23,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:23,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:23,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 08:54:23,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:54:23,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 08:54:23,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:23,689 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:23,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:54:23,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:54:23,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 08:54:23,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:54:23,713 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 08:54:23,715 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [433504864] [2020-09-25 08:54:23,716 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:54:23,716 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 08:54:23,716 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600247000] [2020-09-25 08:54:23,718 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 08:54:23,718 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:54:23,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 08:54:23,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-09-25 08:54:23,719 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand 9 states. [2020-09-25 08:54:23,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:54:23,880 INFO L93 Difference]: Finished difference Result 69 states and 83 transitions. [2020-09-25 08:54:23,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 08:54:23,882 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 34 [2020-09-25 08:54:23,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:54:23,887 INFO L225 Difference]: With dead ends: 69 [2020-09-25 08:54:23,887 INFO L226 Difference]: Without dead ends: 63 [2020-09-25 08:54:23,888 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-09-25 08:54:23,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-09-25 08:54:23,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 52. [2020-09-25 08:54:23,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-09-25 08:54:23,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 64 transitions. [2020-09-25 08:54:23,914 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 64 transitions. Word has length 34 [2020-09-25 08:54:23,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:54:23,915 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 64 transitions. [2020-09-25 08:54:23,915 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 08:54:23,915 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 64 transitions. [2020-09-25 08:54:23,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-25 08:54:23,919 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:54:23,919 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:54:23,919 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 08:54:23,920 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:54:23,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:54:23,922 INFO L82 PathProgramCache]: Analyzing trace with hash 887160861, now seen corresponding path program 2 times [2020-09-25 08:54:23,922 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:54:23,922 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1545537751] [2020-09-25 08:54:23,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:54:23,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:23,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:23,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:24,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:24,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:24,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 08:54:24,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 08:54:24,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 897 [2020-09-25 08:54:24,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:24,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:24,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 08:54:24,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 08:54:24,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 08:54:24,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:54:24,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:54:24,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:24,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:24,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:24,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:54:24,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:54:24,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:54:24,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:24,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:24,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:54:24,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:54:24,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:54:24,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:54:24,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 08:54:24,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:24,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:24,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:24,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 08:54:24,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:54:24,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-09-25 08:54:24,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:24,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:24,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 08:54:24,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:54:24,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 08:54:24,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:54:24,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:54:24,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:24,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:24,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:24,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 08:54:24,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:54:24,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 08:54:24,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:24,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:24,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 08:54:24,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:54:24,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 08:54:24,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:54:24,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 08:54:24,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:24,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:25,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:25,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:54:25,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:54:25,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 08:54:25,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:25,008 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:25,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:54:25,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:54:25,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 08:54:25,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:54:25,025 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 08:54:25,025 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1545537751] [2020-09-25 08:54:25,026 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:54:25,026 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 08:54:25,026 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781239239] [2020-09-25 08:54:25,027 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 08:54:25,027 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:54:25,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 08:54:25,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-25 08:54:25,027 INFO L87 Difference]: Start difference. First operand 52 states and 64 transitions. Second operand 9 states. [2020-09-25 08:54:25,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:54:25,130 INFO L93 Difference]: Finished difference Result 71 states and 88 transitions. [2020-09-25 08:54:25,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 08:54:25,131 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 34 [2020-09-25 08:54:25,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:54:25,133 INFO L225 Difference]: With dead ends: 71 [2020-09-25 08:54:25,133 INFO L226 Difference]: Without dead ends: 65 [2020-09-25 08:54:25,133 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-09-25 08:54:25,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-09-25 08:54:25,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 54. [2020-09-25 08:54:25,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 08:54:25,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 69 transitions. [2020-09-25 08:54:25,144 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 69 transitions. Word has length 34 [2020-09-25 08:54:25,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:54:25,145 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 69 transitions. [2020-09-25 08:54:25,145 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 08:54:25,145 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 69 transitions. [2020-09-25 08:54:25,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 08:54:25,147 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:54:25,147 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 08:54:25,148 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 08:54:25,148 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:54:25,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:54:25,148 INFO L82 PathProgramCache]: Analyzing trace with hash 186293384, now seen corresponding path program 1 times [2020-09-25 08:54:25,148 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:54:25,149 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1586994613] [2020-09-25 08:54:25,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:54:25,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:25,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:25,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:25,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:25,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:25,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:26,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:26,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 08:54:26,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 08:54:26,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1455 [2020-09-25 08:54:26,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:26,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:26,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 08:54:26,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 08:54:26,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 08:54:26,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:54:26,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:54:26,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:26,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:26,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:26,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:54:26,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:54:26,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:54:26,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:26,635 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:26,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:54:26,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:54:26,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:54:26,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:54:26,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 08:54:26,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:26,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:26,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:26,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:27,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:27,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 08:54:27,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 08:54:27,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 508 [2020-09-25 08:54:27,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:27,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:27,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 08:54:27,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:54:27,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 08:54:27,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:54:27,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:54:27,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:27,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:27,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:27,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 08:54:27,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:54:27,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 08:54:27,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:27,217 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:27,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 08:54:27,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:54:27,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 08:54:27,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 08:54:27,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 08:54:27,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:27,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:27,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:27,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 08:54:27,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:54:27,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 08:54:27,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:27,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:27,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:54:27,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:54:27,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 08:54:27,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 08:54:27,283 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 08:54:27,284 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1586994613] [2020-09-25 08:54:27,285 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:54:27,286 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 08:54:27,286 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472357026] [2020-09-25 08:54:27,287 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 08:54:27,288 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:54:27,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 08:54:27,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-25 08:54:27,289 INFO L87 Difference]: Start difference. First operand 54 states and 69 transitions. Second operand 9 states. [2020-09-25 08:54:27,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:54:27,426 INFO L93 Difference]: Finished difference Result 75 states and 92 transitions. [2020-09-25 08:54:27,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 08:54:27,429 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 35 [2020-09-25 08:54:27,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:54:27,433 INFO L225 Difference]: With dead ends: 75 [2020-09-25 08:54:27,433 INFO L226 Difference]: Without dead ends: 69 [2020-09-25 08:54:27,434 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-09-25 08:54:27,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-09-25 08:54:27,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 50. [2020-09-25 08:54:27,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 08:54:27,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2020-09-25 08:54:27,452 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 35 [2020-09-25 08:54:27,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:54:27,456 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2020-09-25 08:54:27,456 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 08:54:27,456 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2020-09-25 08:54:27,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-09-25 08:54:27,458 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:54:27,458 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-09-25 08:54:27,462 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 08:54:27,462 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:54:27,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:54:27,463 INFO L82 PathProgramCache]: Analyzing trace with hash -2066677686, now seen corresponding path program 1 times [2020-09-25 08:54:27,463 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:54:27,463 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1906140860] [2020-09-25 08:54:27,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:54:27,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:27,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:27,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:27,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:27,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:27,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:28,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:32,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:32,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 08:54:32,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 08:54:32,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 08:54:32,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:32,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:32,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 08:54:32,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 08:54:32,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 08:54:32,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:54:32,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:54:32,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:32,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:32,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:32,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:54:32,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:54:32,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:54:32,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:32,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:32,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:54:32,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:54:32,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:54:32,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:54:32,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 08:54:32,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:32,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:32,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:32,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:32,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:33,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:34,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:34,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 08:54:34,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 08:54:34,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1648 [2020-09-25 08:54:34,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:34,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:34,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 08:54:34,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 08:54:34,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-25 08:54:34,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:54:34,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:54:34,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:34,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:34,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:34,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:54:34,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:54:34,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 08:54:34,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:34,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:34,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 08:54:34,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:54:34,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 08:54:34,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:54:34,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 08:54:34,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:34,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:34,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:34,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:34,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 08:54:34,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:54:34,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-09-25 08:54:34,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:34,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:34,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:54:34,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:54:34,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 08:54:34,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:54:34,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:54:34,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:34,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:34,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:34,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:54:34,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:54:34,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 08:54:34,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:34,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:34,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:54:34,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:54:34,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:54:34,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 08:54:34,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 08:54:34,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:34,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:34,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:34,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:54:34,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:54:34,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 08:54:34,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:34,318 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:34,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:54:34,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:54:34,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:54:34,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 08:54:34,330 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-25 08:54:34,331 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1906140860] [2020-09-25 08:54:34,331 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:54:34,331 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 08:54:34,332 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868466224] [2020-09-25 08:54:34,332 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 08:54:34,333 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:54:34,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 08:54:34,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 08:54:34,334 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand 7 states. [2020-09-25 08:54:34,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:54:34,526 INFO L93 Difference]: Finished difference Result 85 states and 110 transitions. [2020-09-25 08:54:34,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 08:54:34,527 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 50 [2020-09-25 08:54:34,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:54:34,529 INFO L225 Difference]: With dead ends: 85 [2020-09-25 08:54:34,529 INFO L226 Difference]: Without dead ends: 79 [2020-09-25 08:54:34,530 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 08:54:34,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-09-25 08:54:34,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 67. [2020-09-25 08:54:34,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-09-25 08:54:34,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 86 transitions. [2020-09-25 08:54:34,540 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 86 transitions. Word has length 50 [2020-09-25 08:54:34,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:54:34,541 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 86 transitions. [2020-09-25 08:54:34,541 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 08:54:34,541 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 86 transitions. [2020-09-25 08:54:34,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 08:54:34,543 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:54:34,543 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:54:34,544 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 08:54:34,544 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:54:34,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:54:34,544 INFO L82 PathProgramCache]: Analyzing trace with hash -2026330267, now seen corresponding path program 1 times [2020-09-25 08:54:34,545 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:54:34,545 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1819419892] [2020-09-25 08:54:34,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:54:34,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:34,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:34,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:34,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:34,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:35,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:39,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:39,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 08:54:39,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 08:54:39,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 08:54:39,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:39,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:39,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 08:54:39,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 08:54:39,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 08:54:39,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:54:39,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:54:39,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:39,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:39,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:39,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:54:39,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:54:39,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:54:39,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:39,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:39,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:54:39,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:54:39,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:54:39,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:54:39,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 08:54:39,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:39,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:39,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:39,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:39,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:40,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:40,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 08:54:40,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 08:54:40,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 694 [2020-09-25 08:54:40,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:40,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:40,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 08:54:40,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 08:54:40,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 08:54:40,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:54:40,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:54:40,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:40,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:40,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:40,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 08:54:40,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:54:40,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 08:54:40,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:40,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:40,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 08:54:40,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:54:40,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 08:54:40,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:54:40,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 08:54:40,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:40,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:40,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:40,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:40,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 08:54:40,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:54:40,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-09-25 08:54:40,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:40,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:40,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:54:40,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:54:40,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 08:54:40,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:54:40,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:54:40,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:40,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:40,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:40,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:54:40,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:54:40,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 08:54:40,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:40,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:40,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:54:40,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:54:40,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:54:40,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:54:40,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 08:54:40,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:40,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:40,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:40,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:54:40,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:54:40,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 08:54:40,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:40,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:40,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:54:40,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:54:40,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:54:40,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:54:40,463 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-25 08:54:40,463 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1819419892] [2020-09-25 08:54:40,463 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:54:40,464 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 08:54:40,464 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811563371] [2020-09-25 08:54:40,464 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 08:54:40,465 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:54:40,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 08:54:40,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 08:54:40,465 INFO L87 Difference]: Start difference. First operand 67 states and 86 transitions. Second operand 7 states. [2020-09-25 08:54:40,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:54:40,593 INFO L93 Difference]: Finished difference Result 87 states and 112 transitions. [2020-09-25 08:54:40,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 08:54:40,593 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 51 [2020-09-25 08:54:40,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:54:40,595 INFO L225 Difference]: With dead ends: 87 [2020-09-25 08:54:40,595 INFO L226 Difference]: Without dead ends: 81 [2020-09-25 08:54:40,596 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-25 08:54:40,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-09-25 08:54:40,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 67. [2020-09-25 08:54:40,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-09-25 08:54:40,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 86 transitions. [2020-09-25 08:54:40,605 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 86 transitions. Word has length 51 [2020-09-25 08:54:40,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:54:40,606 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 86 transitions. [2020-09-25 08:54:40,606 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 08:54:40,606 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 86 transitions. [2020-09-25 08:54:40,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-09-25 08:54:40,607 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:54:40,608 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-09-25 08:54:40,608 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 08:54:40,608 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:54:40,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:54:40,609 INFO L82 PathProgramCache]: Analyzing trace with hash 1875452576, now seen corresponding path program 2 times [2020-09-25 08:54:40,609 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:54:40,609 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [761216589] [2020-09-25 08:54:40,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:54:40,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:40,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:40,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:40,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:40,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:41,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:41,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:41,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:43,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:45,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:45,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 08:54:45,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 08:54:45,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 08:54:45,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:45,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:45,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 08:54:45,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 08:54:45,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 08:54:45,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:54:45,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:54:45,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:45,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:45,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:45,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:54:45,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:54:45,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:54:45,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:45,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:45,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:54:45,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:54:45,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:54:45,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:54:45,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 08:54:45,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:45,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:45,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:45,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:45,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:46,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:46,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:46,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:47,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:47,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 08:54:47,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 08:54:47,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2243 [2020-09-25 08:54:47,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:47,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:47,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 08:54:47,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 08:54:47,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-25 08:54:47,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:54:47,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:54:47,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:47,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:47,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:47,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:48,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:48,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 08:54:48,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 08:54:48,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-09-25 08:54:48,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:48,037 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:48,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 08:54:48,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:54:48,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 08:54:48,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:54:48,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:54:48,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:48,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:48,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:48,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:54:48,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:54:48,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 08:54:48,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:48,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:48,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:54:48,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:54:48,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 08:54:48,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:54:48,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 08:54:48,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:48,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:48,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:48,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:54:48,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:54:48,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 08:54:48,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:48,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:48,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 08:54:48,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:54:48,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 08:54:48,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:54:48,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 08:54:48,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:48,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:48,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:48,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:54:48,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:54:48,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 08:54:48,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:48,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:48,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:54:48,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:54:48,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 08:54:48,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:54:48,137 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 08:54:48,143 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [761216589] [2020-09-25 08:54:48,143 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:54:48,144 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 08:54:48,144 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882891322] [2020-09-25 08:54:48,145 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 08:54:48,145 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:54:48,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 08:54:48,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-25 08:54:48,145 INFO L87 Difference]: Start difference. First operand 67 states and 86 transitions. Second operand 9 states. [2020-09-25 08:54:48,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:54:48,359 INFO L93 Difference]: Finished difference Result 95 states and 134 transitions. [2020-09-25 08:54:48,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 08:54:48,359 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 50 [2020-09-25 08:54:48,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:54:48,361 INFO L225 Difference]: With dead ends: 95 [2020-09-25 08:54:48,361 INFO L226 Difference]: Without dead ends: 89 [2020-09-25 08:54:48,362 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-09-25 08:54:48,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-09-25 08:54:48,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 79. [2020-09-25 08:54:48,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-09-25 08:54:48,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 108 transitions. [2020-09-25 08:54:48,380 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 108 transitions. Word has length 50 [2020-09-25 08:54:48,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:54:48,381 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 108 transitions. [2020-09-25 08:54:48,381 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 08:54:48,382 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 108 transitions. [2020-09-25 08:54:48,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-25 08:54:48,384 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:54:48,384 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2020-09-25 08:54:48,384 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 08:54:48,384 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:54:48,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:54:48,385 INFO L82 PathProgramCache]: Analyzing trace with hash -1756954048, now seen corresponding path program 1 times [2020-09-25 08:54:48,385 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:54:48,385 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1374786436] [2020-09-25 08:54:48,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:54:48,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:48,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:48,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:48,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:48,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:48,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:48,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:48,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:48,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:49,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:49,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:53,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:53,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-25 08:54:53,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 08:54:53,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 08:54:53,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:53,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:53,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 08:54:53,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 08:54:53,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-25 08:54:53,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:54:53,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:54:53,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:53,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:53,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:53,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:54:53,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:54:53,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:54:53,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:53,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:53,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:54:53,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:54:53,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:54:53,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:54:53,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 08:54:53,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:53,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:53,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:53,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:53,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:53,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:53,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:53,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:55,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:55,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:58,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:58,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 08:54:58,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 08:54:58,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 08:54:58,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:58,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:58,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 08:54:58,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 08:54:58,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 08:54:58,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:54:58,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:54:58,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:58,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:58,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:58,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:58,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:58,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 08:54:58,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 08:54:58,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-09-25 08:54:58,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:58,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:58,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:54:58,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:54:58,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 08:54:58,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:54:58,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:54:58,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:58,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:58,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:58,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 08:54:58,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:54:58,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 08:54:58,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:58,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:58,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:54:58,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:54:58,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:54:58,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:54:58,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 08:54:58,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:58,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:58,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:58,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 08:54:58,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:54:58,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:54:58,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:58,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:58,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:54:58,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:54:58,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:54:58,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:54:58,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-25 08:54:58,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:58,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:58,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:58,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:54:58,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:54:58,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 08:54:58,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:58,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:58,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 08:54:58,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:54:58,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 08:54:58,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:54:58,643 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-25 08:54:58,643 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1374786436] [2020-09-25 08:54:58,643 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:54:58,643 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 08:54:58,644 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671569198] [2020-09-25 08:54:58,644 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 08:54:58,644 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:54:58,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 08:54:58,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 08:54:58,645 INFO L87 Difference]: Start difference. First operand 79 states and 108 transitions. Second operand 7 states. [2020-09-25 08:54:58,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:54:58,766 INFO L93 Difference]: Finished difference Result 97 states and 136 transitions. [2020-09-25 08:54:58,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 08:54:58,766 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 52 [2020-09-25 08:54:58,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:54:58,768 INFO L225 Difference]: With dead ends: 97 [2020-09-25 08:54:58,768 INFO L226 Difference]: Without dead ends: 91 [2020-09-25 08:54:58,769 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 08:54:58,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-09-25 08:54:58,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 79. [2020-09-25 08:54:58,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-09-25 08:54:58,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 108 transitions. [2020-09-25 08:54:58,777 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 108 transitions. Word has length 52 [2020-09-25 08:54:58,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:54:58,778 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 108 transitions. [2020-09-25 08:54:58,778 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 08:54:58,778 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 108 transitions. [2020-09-25 08:54:58,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-25 08:54:58,779 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:54:58,780 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:54:58,780 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 08:54:58,780 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:54:58,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:54:58,780 INFO L82 PathProgramCache]: Analyzing trace with hash -176890171, now seen corresponding path program 1 times [2020-09-25 08:54:58,781 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:54:58,781 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1100847432] [2020-09-25 08:54:58,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:54:58,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:58,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:58,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:58,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:58,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:59,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:59,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:00,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:55:00,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-09-25 08:55:00,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 08:55:00,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2085 [2020-09-25 08:55:00,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:55:00,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:55:00,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 08:55:00,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 08:55:00,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-25 08:55:00,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:55:00,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:55:00,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:55:00,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:00,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:55:00,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:55:00,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:55:00,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:55:00,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:55:00,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:55:00,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:55:00,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:55:00,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:55:00,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:55:00,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 08:55:00,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:55:00,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:00,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:00,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:00,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:01,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:01,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:02,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:55:02,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 08:55:02,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 08:55:02,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1390 [2020-09-25 08:55:02,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:55:02,280 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:55:02,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 08:55:02,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 08:55:02,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 08:55:02,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:55:02,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:55:02,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:55:02,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:02,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:02,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:02,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:55:02,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 08:55:02,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 08:55:02,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-09-25 08:55:02,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:55:02,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:55:02,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:55:02,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:55:02,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 08:55:02,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:55:02,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:55:02,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:55:02,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:02,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:55:02,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 08:55:02,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:55:02,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 08:55:02,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:55:02,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:55:02,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:55:02,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:55:02,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:55:02,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:55:02,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 08:55:02,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:55:02,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:02,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:55:02,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 08:55:02,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:55:02,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 08:55:02,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:55:02,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:55:02,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:55:02,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:55:02,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:55:02,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:55:02,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-25 08:55:02,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:55:02,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:02,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:55:02,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 08:55:02,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:55:02,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 08:55:02,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:55:02,421 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:55:02,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 08:55:02,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:55:02,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 08:55:02,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:55:02,442 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-25 08:55:02,443 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1100847432] [2020-09-25 08:55:02,443 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:55:02,443 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 08:55:02,443 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783541516] [2020-09-25 08:55:02,444 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 08:55:02,444 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:55:02,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 08:55:02,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 08:55:02,444 INFO L87 Difference]: Start difference. First operand 79 states and 108 transitions. Second operand 7 states. [2020-09-25 08:55:02,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:55:02,569 INFO L93 Difference]: Finished difference Result 103 states and 147 transitions. [2020-09-25 08:55:02,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 08:55:02,570 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 53 [2020-09-25 08:55:02,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:55:02,571 INFO L225 Difference]: With dead ends: 103 [2020-09-25 08:55:02,572 INFO L226 Difference]: Without dead ends: 97 [2020-09-25 08:55:02,573 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 08:55:02,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-09-25 08:55:02,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 81. [2020-09-25 08:55:02,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-09-25 08:55:02,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 112 transitions. [2020-09-25 08:55:02,587 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 112 transitions. Word has length 53 [2020-09-25 08:55:02,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:55:02,590 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 112 transitions. [2020-09-25 08:55:02,590 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 08:55:02,590 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 112 transitions. [2020-09-25 08:55:02,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-25 08:55:02,591 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:55:02,591 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:55:02,592 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 08:55:02,592 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:55:02,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:55:02,592 INFO L82 PathProgramCache]: Analyzing trace with hash -2125934686, now seen corresponding path program 1 times [2020-09-25 08:55:02,592 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:55:02,593 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [495401612] [2020-09-25 08:55:02,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:55:02,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:55:02,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:02,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:02,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:02,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:02,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:02,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:02,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:03,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:03,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:03,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:05,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:07,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:55:07,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 08:55:07,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 08:55:07,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 08:55:07,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:55:07,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:55:07,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 08:55:07,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 08:55:07,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 08:55:07,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:55:07,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:55:07,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:55:07,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:07,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:55:07,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:55:07,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:55:07,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:55:07,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:55:07,617 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:55:07,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:55:07,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:55:07,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:55:07,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:55:07,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 08:55:07,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:55:07,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:07,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:07,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:07,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:07,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:07,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:08,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:08,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:08,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking...