/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/psyco/psyco_abp_1-3.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 01:57:35,653 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 01:57:35,657 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 01:57:35,700 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 01:57:35,700 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 01:57:35,710 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 01:57:35,712 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 01:57:35,716 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 01:57:35,719 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 01:57:35,722 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 01:57:35,723 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 01:57:35,725 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 01:57:35,726 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 01:57:35,728 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 01:57:35,731 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 01:57:35,732 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 01:57:35,734 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 01:57:35,735 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 01:57:35,737 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 01:57:35,745 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 01:57:35,747 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 01:57:35,748 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 01:57:35,749 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 01:57:35,750 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 01:57:35,763 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 01:57:35,763 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 01:57:35,764 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 01:57:35,771 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 01:57:35,771 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 01:57:35,775 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 01:57:35,776 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 01:57:35,777 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 01:57:35,777 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 01:57:35,778 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 01:57:35,779 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 01:57:35,779 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 01:57:35,780 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 01:57:35,782 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 01:57:35,782 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 01:57:35,783 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 01:57:35,784 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 01:57:35,785 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-15 01:57:35,824 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 01:57:35,825 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 01:57:35,827 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 01:57:35,827 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 01:57:35,827 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 01:57:35,827 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 01:57:35,828 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 01:57:35,828 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 01:57:35,828 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 01:57:35,828 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 01:57:35,829 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 01:57:35,829 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 01:57:35,830 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 01:57:35,830 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 01:57:35,830 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 01:57:35,830 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 01:57:35,831 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 01:57:35,831 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 01:57:35,831 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 01:57:35,831 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 01:57:35,832 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 01:57:35,832 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 01:57:35,832 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 01:57:35,832 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 01:57:35,832 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 01:57:35,833 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 01:57:35,833 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 01:57:35,833 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 01:57:35,833 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 01:57:35,833 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-15 01:57:36,172 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 01:57:36,185 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 01:57:36,189 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 01:57:36,190 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 01:57:36,191 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 01:57:36,192 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/psyco/psyco_abp_1-3.c [2020-10-15 01:57:36,265 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c50c90e1b/4593b4bf1f02434abc1c6668a9782ccf/FLAG1966940b5 [2020-10-15 01:57:36,879 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 01:57:36,880 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/psyco/psyco_abp_1-3.c [2020-10-15 01:57:36,893 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c50c90e1b/4593b4bf1f02434abc1c6668a9782ccf/FLAG1966940b5 [2020-10-15 01:57:37,123 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c50c90e1b/4593b4bf1f02434abc1c6668a9782ccf [2020-10-15 01:57:37,132 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 01:57:37,134 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 01:57:37,135 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 01:57:37,135 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 01:57:37,139 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 01:57:37,140 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:57:37" (1/1) ... [2020-10-15 01:57:37,143 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20d022c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:57:37, skipping insertion in model container [2020-10-15 01:57:37,143 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:57:37" (1/1) ... [2020-10-15 01:57:37,151 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 01:57:37,186 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 01:57:37,509 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 01:57:37,522 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 01:57:37,718 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 01:57:37,734 INFO L208 MainTranslator]: Completed translation [2020-10-15 01:57:37,735 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:57:37 WrapperNode [2020-10-15 01:57:37,735 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 01:57:37,736 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 01:57:37,736 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 01:57:37,736 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 01:57:37,756 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:57:37" (1/1) ... [2020-10-15 01:57:37,756 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:57:37" (1/1) ... [2020-10-15 01:57:37,769 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:57:37" (1/1) ... [2020-10-15 01:57:37,770 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:57:37" (1/1) ... [2020-10-15 01:57:37,794 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:57:37" (1/1) ... [2020-10-15 01:57:37,807 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:57:37" (1/1) ... [2020-10-15 01:57:37,814 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:57:37" (1/1) ... [2020-10-15 01:57:37,824 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 01:57:37,825 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 01:57:37,825 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 01:57:37,825 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 01:57:37,826 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:57:37" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 01:57:37,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 01:57:37,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 01:57:37,931 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 01:57:37,932 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-15 01:57:37,932 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 01:57:37,932 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 01:57:37,932 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 01:57:37,932 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 01:57:38,814 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 01:57:38,814 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-15 01:57:38,820 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:57:38 BoogieIcfgContainer [2020-10-15 01:57:38,820 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 01:57:38,821 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 01:57:38,822 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 01:57:38,825 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 01:57:38,825 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:57:37" (1/3) ... [2020-10-15 01:57:38,826 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@332b484b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:57:38, skipping insertion in model container [2020-10-15 01:57:38,827 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:57:37" (2/3) ... [2020-10-15 01:57:38,827 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@332b484b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:57:38, skipping insertion in model container [2020-10-15 01:57:38,827 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:57:38" (3/3) ... [2020-10-15 01:57:38,830 INFO L109 eAbstractionObserver]: Analyzing ICFG psyco_abp_1-3.c [2020-10-15 01:57:38,841 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 01:57:38,850 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 01:57:38,865 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 01:57:38,892 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 01:57:38,892 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 01:57:38,893 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 01:57:38,893 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 01:57:38,893 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 01:57:38,893 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 01:57:38,893 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 01:57:38,894 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 01:57:38,917 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states. [2020-10-15 01:57:38,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-15 01:57:38,924 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 01:57:38,925 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 01:57:38,926 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 01:57:38,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 01:57:38,932 INFO L82 PathProgramCache]: Analyzing trace with hash 1483071650, now seen corresponding path program 1 times [2020-10-15 01:57:38,939 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 01:57:38,940 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1083138542] [2020-10-15 01:57:38,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 01:57:39,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:57:39,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:57:39,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:57:39,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-15 01:57:39,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:57:39,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-15 01:57:39,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:57:39,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:57:39,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 01:57:39,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-15 01:57:39,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 01:57:39,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 11 [2020-10-15 01:57:39,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 01:57:39,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:57:39,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:57:39,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:57:39,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 01:57:39,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:57:39,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 01:57:39,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:57:39,269 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:57:39,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 01:57:39,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 01:57:39,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 01:57:39,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 01:57:39,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 01:57:39,281 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1083138542] [2020-10-15 01:57:39,283 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 01:57:39,283 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 01:57:39,285 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591179390] [2020-10-15 01:57:39,293 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 01:57:39,293 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 01:57:39,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 01:57:39,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 01:57:39,314 INFO L87 Difference]: Start difference. First operand 114 states. Second operand 3 states. [2020-10-15 01:57:39,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 01:57:39,402 INFO L93 Difference]: Finished difference Result 222 states and 422 transitions. [2020-10-15 01:57:39,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 01:57:39,404 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-10-15 01:57:39,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 01:57:39,419 INFO L225 Difference]: With dead ends: 222 [2020-10-15 01:57:39,419 INFO L226 Difference]: Without dead ends: 104 [2020-10-15 01:57:39,424 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 01:57:39,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-15 01:57:39,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2020-10-15 01:57:39,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-10-15 01:57:39,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 169 transitions. [2020-10-15 01:57:39,480 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 169 transitions. Word has length 13 [2020-10-15 01:57:39,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 01:57:39,481 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 169 transitions. [2020-10-15 01:57:39,481 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 01:57:39,481 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 169 transitions. [2020-10-15 01:57:39,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 01:57:39,482 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 01:57:39,482 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 01:57:39,483 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 01:57:39,483 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 01:57:39,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 01:57:39,484 INFO L82 PathProgramCache]: Analyzing trace with hash -736931587, now seen corresponding path program 1 times [2020-10-15 01:57:39,484 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 01:57:39,484 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [714500654] [2020-10-15 01:57:39,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 01:57:39,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:57:39,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:57:39,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:57:39,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:57:39,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-15 01:57:39,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 01:57:39,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 255 [2020-10-15 01:57:39,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:57:39,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:57:39,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 01:57:39,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 01:57:39,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-15 01:57:39,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 01:57:39,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 01:57:39,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:57:39,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:57:39,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:57:39,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 01:57:39,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:57:39,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 01:57:39,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:57:39,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:57:39,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 01:57:39,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 01:57:39,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 01:57:39,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 01:57:39,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 01:57:39,812 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [714500654] [2020-10-15 01:57:39,812 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 01:57:39,812 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 01:57:39,813 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144569499] [2020-10-15 01:57:39,814 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 01:57:39,815 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 01:57:39,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 01:57:39,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 01:57:39,816 INFO L87 Difference]: Start difference. First operand 104 states and 169 transitions. Second operand 4 states. [2020-10-15 01:57:40,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 01:57:40,254 INFO L93 Difference]: Finished difference Result 205 states and 336 transitions. [2020-10-15 01:57:40,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 01:57:40,255 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-10-15 01:57:40,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 01:57:40,257 INFO L225 Difference]: With dead ends: 205 [2020-10-15 01:57:40,257 INFO L226 Difference]: Without dead ends: 107 [2020-10-15 01:57:40,259 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 01:57:40,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-10-15 01:57:40,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2020-10-15 01:57:40,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-15 01:57:40,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 172 transitions. [2020-10-15 01:57:40,272 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 172 transitions. Word has length 14 [2020-10-15 01:57:40,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 01:57:40,272 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 172 transitions. [2020-10-15 01:57:40,273 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 01:57:40,273 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 172 transitions. [2020-10-15 01:57:40,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-15 01:57:40,274 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 01:57:40,274 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 01:57:40,274 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 01:57:40,275 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 01:57:40,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 01:57:40,276 INFO L82 PathProgramCache]: Analyzing trace with hash 1504395429, now seen corresponding path program 1 times [2020-10-15 01:57:40,276 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 01:57:40,276 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1076871448] [2020-10-15 01:57:40,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 01:57:40,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:57:40,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:57:40,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:57:40,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-15 01:57:40,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:57:40,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-15 01:57:40,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:57:40,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:57:40,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 01:57:40,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-15 01:57:40,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-15 01:57:40,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 01:57:40,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 01:57:40,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:57:40,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:57:40,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:57:40,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 01:57:40,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:57:40,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 01:57:40,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:57:40,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:57:40,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 01:57:40,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 01:57:40,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 01:57:40,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 01:57:40,636 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 01:57:40,636 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1076871448] [2020-10-15 01:57:40,636 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 01:57:40,637 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 01:57:40,637 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786409685] [2020-10-15 01:57:40,638 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 01:57:40,638 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 01:57:40,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 01:57:40,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 01:57:40,639 INFO L87 Difference]: Start difference. First operand 107 states and 172 transitions. Second operand 4 states. [2020-10-15 01:57:41,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 01:57:41,263 INFO L93 Difference]: Finished difference Result 209 states and 338 transitions. [2020-10-15 01:57:41,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 01:57:41,264 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-10-15 01:57:41,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 01:57:41,266 INFO L225 Difference]: With dead ends: 209 [2020-10-15 01:57:41,266 INFO L226 Difference]: Without dead ends: 190 [2020-10-15 01:57:41,267 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 01:57:41,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-10-15 01:57:41,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 176. [2020-10-15 01:57:41,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-10-15 01:57:41,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 285 transitions. [2020-10-15 01:57:41,284 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 285 transitions. Word has length 19 [2020-10-15 01:57:41,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 01:57:41,284 INFO L479 AbstractCegarLoop]: Abstraction has 176 states and 285 transitions. [2020-10-15 01:57:41,284 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 01:57:41,284 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 285 transitions. [2020-10-15 01:57:41,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-15 01:57:41,286 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 01:57:41,286 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 01:57:41,286 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 01:57:41,286 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 01:57:41,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 01:57:41,287 INFO L82 PathProgramCache]: Analyzing trace with hash 2142865338, now seen corresponding path program 1 times [2020-10-15 01:57:41,287 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 01:57:41,287 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [301250341] [2020-10-15 01:57:41,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 01:57:41,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:57:41,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:57:41,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:57:41,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:57:41,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-15 01:57:41,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 01:57:41,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-15 01:57:41,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:57:41,373 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:57:41,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 01:57:41,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-15 01:57:41,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 01:57:41,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 01:57:41,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 01:57:41,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:57:41,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:57:41,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:57:41,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 01:57:41,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:57:41,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 01:57:41,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:57:41,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:57:41,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 01:57:41,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 01:57:41,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 01:57:41,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 01:57:41,414 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 01:57:41,414 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [301250341] [2020-10-15 01:57:41,415 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 01:57:41,415 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 01:57:41,415 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258594828] [2020-10-15 01:57:41,416 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 01:57:41,416 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 01:57:41,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 01:57:41,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 01:57:41,417 INFO L87 Difference]: Start difference. First operand 176 states and 285 transitions. Second operand 4 states. [2020-10-15 01:57:41,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 01:57:41,715 INFO L93 Difference]: Finished difference Result 307 states and 499 transitions. [2020-10-15 01:57:41,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 01:57:41,716 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-10-15 01:57:41,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 01:57:41,718 INFO L225 Difference]: With dead ends: 307 [2020-10-15 01:57:41,718 INFO L226 Difference]: Without dead ends: 138 [2020-10-15 01:57:41,719 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 01:57:41,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-10-15 01:57:41,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 136. [2020-10-15 01:57:41,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-15 01:57:41,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 212 transitions. [2020-10-15 01:57:41,731 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 212 transitions. Word has length 20 [2020-10-15 01:57:41,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 01:57:41,731 INFO L479 AbstractCegarLoop]: Abstraction has 136 states and 212 transitions. [2020-10-15 01:57:41,731 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 01:57:41,732 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 212 transitions. [2020-10-15 01:57:41,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 01:57:41,733 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 01:57:41,733 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 01:57:41,734 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 01:57:41,734 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 01:57:41,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 01:57:41,734 INFO L82 PathProgramCache]: Analyzing trace with hash -2011475352, now seen corresponding path program 1 times [2020-10-15 01:57:41,735 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 01:57:41,735 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1672506857] [2020-10-15 01:57:41,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 01:57:41,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:57:41,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:57:41,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:57:41,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-15 01:57:41,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:57:41,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-15 01:57:41,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:57:41,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:57:41,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 01:57:41,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-15 01:57:41,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-15 01:57:41,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 01:57:41,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 01:57:41,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:57:41,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:57:41,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:57:41,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 01:57:41,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:57:41,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 01:57:41,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:57:41,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:57:41,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 01:57:41,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 01:57:41,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 01:57:41,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 01:57:41,865 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 01:57:41,866 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1672506857] [2020-10-15 01:57:41,866 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 01:57:41,866 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 01:57:41,866 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212158626] [2020-10-15 01:57:41,867 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 01:57:41,867 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 01:57:41,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 01:57:41,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 01:57:41,868 INFO L87 Difference]: Start difference. First operand 136 states and 212 transitions. Second operand 4 states. [2020-10-15 01:57:42,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 01:57:42,008 INFO L93 Difference]: Finished difference Result 250 states and 390 transitions. [2020-10-15 01:57:42,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 01:57:42,009 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-10-15 01:57:42,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 01:57:42,010 INFO L225 Difference]: With dead ends: 250 [2020-10-15 01:57:42,011 INFO L226 Difference]: Without dead ends: 121 [2020-10-15 01:57:42,012 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 01:57:42,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-10-15 01:57:42,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 119. [2020-10-15 01:57:42,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-10-15 01:57:42,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 181 transitions. [2020-10-15 01:57:42,022 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 181 transitions. Word has length 25 [2020-10-15 01:57:42,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 01:57:42,023 INFO L479 AbstractCegarLoop]: Abstraction has 119 states and 181 transitions. [2020-10-15 01:57:42,023 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 01:57:42,023 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 181 transitions. [2020-10-15 01:57:42,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-15 01:57:42,024 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 01:57:42,024 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 01:57:42,025 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 01:57:42,025 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 01:57:42,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 01:57:42,025 INFO L82 PathProgramCache]: Analyzing trace with hash 1818456969, now seen corresponding path program 1 times [2020-10-15 01:57:42,025 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 01:57:42,026 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1542480914] [2020-10-15 01:57:42,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 01:57:42,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:57:42,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:57:42,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:57:42,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:57:42,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-15 01:57:42,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 01:57:42,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 318 [2020-10-15 01:57:42,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:57:42,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:57:42,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 01:57:42,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-15 01:57:42,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-15 01:57:42,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 01:57:42,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 01:57:42,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:57:42,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:57:42,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:57:42,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 01:57:42,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:57:42,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 01:57:42,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:57:42,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:57:42,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 01:57:42,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 01:57:42,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 01:57:42,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 01:57:42,474 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 01:57:42,474 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1542480914] [2020-10-15 01:57:42,475 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 01:57:42,475 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-15 01:57:42,475 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418502115] [2020-10-15 01:57:42,476 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 01:57:42,476 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 01:57:42,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 01:57:42,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 01:57:42,477 INFO L87 Difference]: Start difference. First operand 119 states and 181 transitions. Second operand 5 states. [2020-10-15 01:57:43,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 01:57:43,175 INFO L93 Difference]: Finished difference Result 212 states and 326 transitions. [2020-10-15 01:57:43,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 01:57:43,176 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-10-15 01:57:43,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 01:57:43,178 INFO L225 Difference]: With dead ends: 212 [2020-10-15 01:57:43,178 INFO L226 Difference]: Without dead ends: 194 [2020-10-15 01:57:43,180 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-15 01:57:43,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-10-15 01:57:43,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 187. [2020-10-15 01:57:43,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2020-10-15 01:57:43,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 286 transitions. [2020-10-15 01:57:43,195 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 286 transitions. Word has length 27 [2020-10-15 01:57:43,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 01:57:43,195 INFO L479 AbstractCegarLoop]: Abstraction has 187 states and 286 transitions. [2020-10-15 01:57:43,195 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 01:57:43,196 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 286 transitions. [2020-10-15 01:57:43,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-15 01:57:43,197 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 01:57:43,197 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 01:57:43,197 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 01:57:43,198 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 01:57:43,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 01:57:43,198 INFO L82 PathProgramCache]: Analyzing trace with hash 549034740, now seen corresponding path program 1 times [2020-10-15 01:57:43,198 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 01:57:43,198 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [995607387] [2020-10-15 01:57:43,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 01:57:43,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:57:43,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:57:43,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:57:43,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:57:43,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-15 01:57:43,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 01:57:43,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 294 [2020-10-15 01:57:43,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:57:43,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:57:43,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 01:57:43,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-15 01:57:43,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-15 01:57:43,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 01:57:43,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 01:57:43,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:57:43,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:57:43,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:57:43,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 01:57:43,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:57:43,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 01:57:43,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:57:43,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:57:43,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 01:57:43,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 01:57:43,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 01:57:43,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 01:57:43,660 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 01:57:43,661 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [995607387] [2020-10-15 01:57:43,661 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 01:57:43,661 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-15 01:57:43,661 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306711941] [2020-10-15 01:57:43,662 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 01:57:43,662 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 01:57:43,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 01:57:43,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 01:57:43,663 INFO L87 Difference]: Start difference. First operand 187 states and 286 transitions. Second operand 5 states. [2020-10-15 01:57:44,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 01:57:44,331 INFO L93 Difference]: Finished difference Result 250 states and 382 transitions. [2020-10-15 01:57:44,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 01:57:44,331 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 28 [2020-10-15 01:57:44,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 01:57:44,333 INFO L225 Difference]: With dead ends: 250 [2020-10-15 01:57:44,334 INFO L226 Difference]: Without dead ends: 246 [2020-10-15 01:57:44,334 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-15 01:57:44,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2020-10-15 01:57:44,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 232. [2020-10-15 01:57:44,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2020-10-15 01:57:44,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 360 transitions. [2020-10-15 01:57:44,358 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 360 transitions. Word has length 28 [2020-10-15 01:57:44,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 01:57:44,362 INFO L479 AbstractCegarLoop]: Abstraction has 232 states and 360 transitions. [2020-10-15 01:57:44,362 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 01:57:44,363 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 360 transitions. [2020-10-15 01:57:44,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-15 01:57:44,367 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 01:57:44,367 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-10-15 01:57:44,367 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 01:57:44,368 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 01:57:44,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 01:57:44,368 INFO L82 PathProgramCache]: Analyzing trace with hash -1113591962, now seen corresponding path program 1 times [2020-10-15 01:57:44,368 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 01:57:44,368 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [591656055] [2020-10-15 01:57:44,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 01:57:44,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:57:44,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:57:44,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:57:44,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:57:44,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-15 01:57:44,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 01:57:44,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-15 01:57:44,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:57:44,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:57:44,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 01:57:44,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-15 01:57:44,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 01:57:44,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 01:57:44,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 01:57:44,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:57:44,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:57:44,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:57:44,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 01:57:44,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:57:44,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 01:57:44,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:57:44,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:57:44,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 01:57:44,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 01:57:44,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 01:57:44,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 01:57:44,568 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 01:57:44,569 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [591656055] [2020-10-15 01:57:44,569 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 01:57:44,569 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 01:57:44,569 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858814675] [2020-10-15 01:57:44,570 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 01:57:44,570 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 01:57:44,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 01:57:44,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 01:57:44,571 INFO L87 Difference]: Start difference. First operand 232 states and 360 transitions. Second operand 4 states. [2020-10-15 01:57:44,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 01:57:44,793 INFO L93 Difference]: Finished difference Result 442 states and 679 transitions. [2020-10-15 01:57:44,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 01:57:44,794 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2020-10-15 01:57:44,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 01:57:44,796 INFO L225 Difference]: With dead ends: 442 [2020-10-15 01:57:44,797 INFO L226 Difference]: Without dead ends: 217 [2020-10-15 01:57:44,798 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 01:57:44,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2020-10-15 01:57:44,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 215. [2020-10-15 01:57:44,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2020-10-15 01:57:44,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 322 transitions. [2020-10-15 01:57:44,813 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 322 transitions. Word has length 29 [2020-10-15 01:57:44,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 01:57:44,813 INFO L479 AbstractCegarLoop]: Abstraction has 215 states and 322 transitions. [2020-10-15 01:57:44,813 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 01:57:44,813 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 322 transitions. [2020-10-15 01:57:44,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-15 01:57:44,820 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 01:57:44,821 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 01:57:44,821 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 01:57:44,821 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 01:57:44,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 01:57:44,822 INFO L82 PathProgramCache]: Analyzing trace with hash 454582667, now seen corresponding path program 1 times [2020-10-15 01:57:44,822 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 01:57:44,822 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1823693769] [2020-10-15 01:57:44,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 01:57:44,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:57:44,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:57:44,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:57:44,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-15 01:57:44,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:57:44,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-15 01:57:44,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:57:44,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:57:44,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 01:57:44,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-15 01:57:44,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-15 01:57:44,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 01:57:45,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 01:57:45,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:57:45,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:57:45,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:57:45,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 01:57:45,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:57:45,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 01:57:45,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:57:45,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:57:45,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 01:57:45,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 01:57:45,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 01:57:45,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 01:57:45,091 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-15 01:57:45,096 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1823693769] [2020-10-15 01:57:45,098 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 01:57:45,098 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 01:57:45,099 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475775381] [2020-10-15 01:57:45,099 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 01:57:45,099 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 01:57:45,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 01:57:45,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 01:57:45,100 INFO L87 Difference]: Start difference. First operand 215 states and 322 transitions. Second operand 4 states. [2020-10-15 01:57:45,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 01:57:45,147 INFO L93 Difference]: Finished difference Result 218 states and 324 transitions. [2020-10-15 01:57:45,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 01:57:45,148 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-10-15 01:57:45,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 01:57:45,149 INFO L225 Difference]: With dead ends: 218 [2020-10-15 01:57:45,150 INFO L226 Difference]: Without dead ends: 212 [2020-10-15 01:57:45,150 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 01:57:45,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-10-15 01:57:45,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 211. [2020-10-15 01:57:45,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2020-10-15 01:57:45,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 313 transitions. [2020-10-15 01:57:45,160 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 313 transitions. Word has length 31 [2020-10-15 01:57:45,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 01:57:45,160 INFO L479 AbstractCegarLoop]: Abstraction has 211 states and 313 transitions. [2020-10-15 01:57:45,161 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 01:57:45,161 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 313 transitions. [2020-10-15 01:57:45,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-15 01:57:45,162 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 01:57:45,162 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 01:57:45,162 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 01:57:45,162 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 01:57:45,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 01:57:45,163 INFO L82 PathProgramCache]: Analyzing trace with hash 362155736, now seen corresponding path program 1 times [2020-10-15 01:57:45,163 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 01:57:45,163 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [938664633] [2020-10-15 01:57:45,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 01:57:45,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:57:45,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:57:45,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:57:45,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:57:46,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:57:46,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-15 01:57:46,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 01:57:46,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 878 [2020-10-15 01:57:46,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:57:46,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:57:46,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 01:57:46,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-15 01:57:46,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-15 01:57:46,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 01:57:46,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 01:57:46,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:57:46,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:57:46,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:57:46,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 01:57:46,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:57:46,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 01:57:46,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:57:46,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:57:46,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 01:57:46,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 01:57:46,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 01:57:46,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 01:57:46,157 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 01:57:46,157 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [938664633] [2020-10-15 01:57:46,158 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 01:57:46,158 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-15 01:57:46,158 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334805196] [2020-10-15 01:57:46,159 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 01:57:46,159 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 01:57:46,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 01:57:46,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-15 01:57:46,160 INFO L87 Difference]: Start difference. First operand 211 states and 313 transitions. Second operand 6 states. [2020-10-15 01:57:46,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 01:57:46,897 INFO L93 Difference]: Finished difference Result 385 states and 572 transitions. [2020-10-15 01:57:46,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 01:57:46,897 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 36 [2020-10-15 01:57:46,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 01:57:46,900 INFO L225 Difference]: With dead ends: 385 [2020-10-15 01:57:46,900 INFO L226 Difference]: Without dead ends: 377 [2020-10-15 01:57:46,901 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-15 01:57:46,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2020-10-15 01:57:46,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 332. [2020-10-15 01:57:46,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 332 states. [2020-10-15 01:57:46,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 499 transitions. [2020-10-15 01:57:46,916 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 499 transitions. Word has length 36 [2020-10-15 01:57:46,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 01:57:46,916 INFO L479 AbstractCegarLoop]: Abstraction has 332 states and 499 transitions. [2020-10-15 01:57:46,916 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 01:57:46,917 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 499 transitions. [2020-10-15 01:57:46,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-15 01:57:46,917 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 01:57:46,917 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 01:57:46,918 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 01:57:46,918 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 01:57:46,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 01:57:46,918 INFO L82 PathProgramCache]: Analyzing trace with hash -1646630523, now seen corresponding path program 1 times [2020-10-15 01:57:46,918 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 01:57:46,919 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2102361128] [2020-10-15 01:57:46,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 01:57:46,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:57:46,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:57:47,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:57:47,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-15 01:57:47,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:57:47,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-15 01:57:47,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:57:47,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:57:47,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 01:57:47,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-15 01:57:47,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 01:57:47,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 01:57:47,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 01:57:47,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:57:47,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:57:47,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:57:47,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 01:57:47,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:57:47,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 01:57:47,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:57:47,094 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:57:47,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 01:57:47,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 01:57:47,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 01:57:47,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 01:57:47,097 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-15 01:57:47,098 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2102361128] [2020-10-15 01:57:47,098 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 01:57:47,098 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 01:57:47,098 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957091267] [2020-10-15 01:57:47,099 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 01:57:47,099 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 01:57:47,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 01:57:47,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 01:57:47,100 INFO L87 Difference]: Start difference. First operand 332 states and 499 transitions. Second operand 4 states. [2020-10-15 01:57:47,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 01:57:47,283 INFO L93 Difference]: Finished difference Result 591 states and 888 transitions. [2020-10-15 01:57:47,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 01:57:47,284 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2020-10-15 01:57:47,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 01:57:47,286 INFO L225 Difference]: With dead ends: 591 [2020-10-15 01:57:47,286 INFO L226 Difference]: Without dead ends: 266 [2020-10-15 01:57:47,288 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 01:57:47,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-10-15 01:57:47,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 264. [2020-10-15 01:57:47,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2020-10-15 01:57:47,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 392 transitions. [2020-10-15 01:57:47,300 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 392 transitions. Word has length 37 [2020-10-15 01:57:47,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 01:57:47,301 INFO L479 AbstractCegarLoop]: Abstraction has 264 states and 392 transitions. [2020-10-15 01:57:47,301 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 01:57:47,301 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 392 transitions. [2020-10-15 01:57:47,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-15 01:57:47,302 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 01:57:47,302 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 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] [2020-10-15 01:57:47,302 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-15 01:57:47,303 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 01:57:47,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 01:57:47,303 INFO L82 PathProgramCache]: Analyzing trace with hash 939353414, now seen corresponding path program 1 times [2020-10-15 01:57:47,303 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 01:57:47,303 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1581081398] [2020-10-15 01:57:47,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 01:57:47,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:57:47,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:57:47,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:57:48,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:57:48,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-15 01:57:48,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 01:57:48,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 838 [2020-10-15 01:57:48,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:57:48,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:57:48,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 01:57:48,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-15 01:57:48,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-15 01:57:48,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 01:57:48,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 01:57:48,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:57:48,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:57:48,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:57:48,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 01:57:48,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:57:48,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 01:57:48,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:57:48,353 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:57:48,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 01:57:48,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 01:57:48,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 01:57:48,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 01:57:48,362 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 01:57:48,362 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1581081398] [2020-10-15 01:57:48,362 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 01:57:48,362 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-15 01:57:48,363 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169452032] [2020-10-15 01:57:48,363 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 01:57:48,363 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 01:57:48,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 01:57:48,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 01:57:48,364 INFO L87 Difference]: Start difference. First operand 264 states and 392 transitions. Second operand 6 states. [2020-10-15 01:57:49,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 01:57:49,102 INFO L93 Difference]: Finished difference Result 275 states and 403 transitions. [2020-10-15 01:57:49,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 01:57:49,102 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 40 [2020-10-15 01:57:49,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 01:57:49,106 INFO L225 Difference]: With dead ends: 275 [2020-10-15 01:57:49,106 INFO L226 Difference]: Without dead ends: 273 [2020-10-15 01:57:49,106 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-15 01:57:49,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2020-10-15 01:57:49,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 265. [2020-10-15 01:57:49,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2020-10-15 01:57:49,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 393 transitions. [2020-10-15 01:57:49,121 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 393 transitions. Word has length 40 [2020-10-15 01:57:49,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 01:57:49,121 INFO L479 AbstractCegarLoop]: Abstraction has 265 states and 393 transitions. [2020-10-15 01:57:49,121 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 01:57:49,121 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 393 transitions. [2020-10-15 01:57:49,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-15 01:57:49,122 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 01:57:49,122 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 01:57:49,123 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-15 01:57:49,123 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 01:57:49,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 01:57:49,123 INFO L82 PathProgramCache]: Analyzing trace with hash -819577482, now seen corresponding path program 1 times [2020-10-15 01:57:49,123 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 01:57:49,124 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [908267693] [2020-10-15 01:57:49,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 01:57:49,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:57:49,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:57:49,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:57:49,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:57:49,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-15 01:57:49,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 01:57:49,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-10-15 01:57:49,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:57:49,334 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:57:49,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 01:57:49,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-15 01:57:49,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-15 01:57:49,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 01:57:49,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 01:57:49,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:57:49,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:57:49,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:57:49,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 01:57:49,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:57:49,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 01:57:49,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:57:49,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:57:49,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 01:57:49,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 01:57:49,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 01:57:49,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 01:57:49,379 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-15 01:57:49,379 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [908267693] [2020-10-15 01:57:49,379 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 01:57:49,379 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 01:57:49,380 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705150994] [2020-10-15 01:57:49,380 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 01:57:49,380 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 01:57:49,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 01:57:49,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 01:57:49,381 INFO L87 Difference]: Start difference. First operand 265 states and 393 transitions. Second operand 4 states. [2020-10-15 01:57:49,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 01:57:49,500 INFO L93 Difference]: Finished difference Result 508 states and 748 transitions. [2020-10-15 01:57:49,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 01:57:49,500 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 41 [2020-10-15 01:57:49,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 01:57:49,502 INFO L225 Difference]: With dead ends: 508 [2020-10-15 01:57:49,502 INFO L226 Difference]: Without dead ends: 250 [2020-10-15 01:57:49,503 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 01:57:49,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2020-10-15 01:57:49,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 248. [2020-10-15 01:57:49,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248 states. [2020-10-15 01:57:49,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 358 transitions. [2020-10-15 01:57:49,514 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 358 transitions. Word has length 41 [2020-10-15 01:57:49,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 01:57:49,515 INFO L479 AbstractCegarLoop]: Abstraction has 248 states and 358 transitions. [2020-10-15 01:57:49,515 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 01:57:49,515 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 358 transitions. [2020-10-15 01:57:49,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-15 01:57:49,515 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 01:57:49,516 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 01:57:49,516 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-15 01:57:49,516 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 01:57:49,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 01:57:49,516 INFO L82 PathProgramCache]: Analyzing trace with hash 711556807, now seen corresponding path program 1 times [2020-10-15 01:57:49,517 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 01:57:49,517 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2124810615] [2020-10-15 01:57:49,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 01:57:49,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:57:49,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:57:49,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:57:49,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:57:50,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:57:50,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-15 01:57:50,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 01:57:50,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 991 [2020-10-15 01:57:50,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:57:50,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:57:50,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 01:57:50,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-15 01:57:50,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-15 01:57:50,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 01:57:50,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 01:57:50,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:57:50,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:57:50,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:57:50,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 01:57:50,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:57:50,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 01:57:50,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:57:50,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:57:50,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 01:57:50,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 01:57:50,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 01:57:50,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 01:57:50,671 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 15 proven. 13 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-15 01:57:50,671 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2124810615] [2020-10-15 01:57:50,671 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 01:57:50,672 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-15 01:57:50,672 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31372818] [2020-10-15 01:57:50,672 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 01:57:50,672 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 01:57:50,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 01:57:50,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 01:57:50,673 INFO L87 Difference]: Start difference. First operand 248 states and 358 transitions. Second operand 6 states. [2020-10-15 01:57:51,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 01:57:51,390 INFO L93 Difference]: Finished difference Result 484 states and 692 transitions. [2020-10-15 01:57:51,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 01:57:51,393 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 50 [2020-10-15 01:57:51,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 01:57:51,395 INFO L225 Difference]: With dead ends: 484 [2020-10-15 01:57:51,395 INFO L226 Difference]: Without dead ends: 236 [2020-10-15 01:57:51,396 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-15 01:57:51,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2020-10-15 01:57:51,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 221. [2020-10-15 01:57:51,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2020-10-15 01:57:51,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 313 transitions. [2020-10-15 01:57:51,408 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 313 transitions. Word has length 50 [2020-10-15 01:57:51,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 01:57:51,408 INFO L479 AbstractCegarLoop]: Abstraction has 221 states and 313 transitions. [2020-10-15 01:57:51,409 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 01:57:51,409 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 313 transitions. [2020-10-15 01:57:51,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-15 01:57:51,409 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 01:57:51,410 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 01:57:51,410 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-15 01:57:51,410 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 01:57:51,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 01:57:51,410 INFO L82 PathProgramCache]: Analyzing trace with hash 1272595608, now seen corresponding path program 1 times [2020-10-15 01:57:51,411 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 01:57:51,411 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1364004972] [2020-10-15 01:57:51,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 01:57:51,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:57:51,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:57:51,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:57:51,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-15 01:57:51,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:57:51,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 207 [2020-10-15 01:57:51,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:57:51,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:57:51,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 01:57:51,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-15 01:57:51,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-15 01:57:51,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 01:57:51,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 01:57:51,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:57:51,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:57:51,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:57:51,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 01:57:51,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:57:51,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 01:57:51,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:57:51,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:57:51,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 01:57:51,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 01:57:51,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 01:57:51,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 01:57:51,702 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-10-15 01:57:51,702 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1364004972] [2020-10-15 01:57:51,703 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 01:57:51,703 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 01:57:51,703 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298814505] [2020-10-15 01:57:51,703 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 01:57:51,704 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 01:57:51,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 01:57:51,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 01:57:51,704 INFO L87 Difference]: Start difference. First operand 221 states and 313 transitions. Second operand 4 states. [2020-10-15 01:57:51,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 01:57:51,889 INFO L93 Difference]: Finished difference Result 371 states and 523 transitions. [2020-10-15 01:57:51,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 01:57:51,890 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 52 [2020-10-15 01:57:51,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 01:57:51,891 INFO L225 Difference]: With dead ends: 371 [2020-10-15 01:57:51,892 INFO L226 Difference]: Without dead ends: 157 [2020-10-15 01:57:51,892 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 01:57:51,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-10-15 01:57:51,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 155. [2020-10-15 01:57:51,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-10-15 01:57:51,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 215 transitions. [2020-10-15 01:57:51,902 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 215 transitions. Word has length 52 [2020-10-15 01:57:51,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 01:57:51,903 INFO L479 AbstractCegarLoop]: Abstraction has 155 states and 215 transitions. [2020-10-15 01:57:51,903 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 01:57:51,903 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 215 transitions. [2020-10-15 01:57:51,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-15 01:57:51,904 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 01:57:51,904 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 01:57:51,904 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-15 01:57:51,904 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 01:57:51,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 01:57:51,905 INFO L82 PathProgramCache]: Analyzing trace with hash 680264501, now seen corresponding path program 1 times [2020-10-15 01:57:51,905 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 01:57:51,905 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1296110601] [2020-10-15 01:57:51,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 01:57:51,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:57:51,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:57:52,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:57:52,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:57:52,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-15 01:57:52,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 01:57:52,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 600 [2020-10-15 01:57:52,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:57:52,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:57:52,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 01:57:52,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-15 01:57:52,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-15 01:57:52,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 01:57:52,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 01:57:52,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:57:52,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:57:52,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:57:52,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 01:57:52,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:57:52,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 01:57:52,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:57:52,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:57:52,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 01:57:52,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 01:57:52,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 01:57:52,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 01:57:52,801 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 15 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 01:57:52,801 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1296110601] [2020-10-15 01:57:52,802 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 01:57:52,802 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-15 01:57:52,802 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406991913] [2020-10-15 01:57:52,803 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 01:57:52,803 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 01:57:52,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 01:57:52,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-15 01:57:52,804 INFO L87 Difference]: Start difference. First operand 155 states and 215 transitions. Second operand 7 states. [2020-10-15 01:57:53,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 01:57:53,570 INFO L93 Difference]: Finished difference Result 166 states and 226 transitions. [2020-10-15 01:57:53,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 01:57:53,570 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 55 [2020-10-15 01:57:53,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 01:57:53,572 INFO L225 Difference]: With dead ends: 166 [2020-10-15 01:57:53,572 INFO L226 Difference]: Without dead ends: 164 [2020-10-15 01:57:53,572 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2020-10-15 01:57:53,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-10-15 01:57:53,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 116. [2020-10-15 01:57:53,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-10-15 01:57:53,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 158 transitions. [2020-10-15 01:57:53,583 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 158 transitions. Word has length 55 [2020-10-15 01:57:53,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 01:57:53,584 INFO L479 AbstractCegarLoop]: Abstraction has 116 states and 158 transitions. [2020-10-15 01:57:53,584 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 01:57:53,584 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 158 transitions. [2020-10-15 01:57:53,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-15 01:57:53,584 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 01:57:53,585 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 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] [2020-10-15 01:57:53,585 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-15 01:57:53,585 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 01:57:53,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 01:57:53,585 INFO L82 PathProgramCache]: Analyzing trace with hash -379328264, now seen corresponding path program 1 times [2020-10-15 01:57:53,586 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 01:57:53,586 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1326902382] [2020-10-15 01:57:53,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 01:57:53,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:57:53,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:57:54,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:57:54,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:57:54,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-15 01:57:54,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 01:57:54,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1233 [2020-10-15 01:57:54,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:57:54,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:57:54,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 01:57:54,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-15 01:57:54,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-15 01:57:54,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 01:57:55,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 01:57:55,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:57:55,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:57:55,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:57:55,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 01:57:55,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:57:55,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 01:57:55,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:57:55,200 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:57:55,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 01:57:55,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 01:57:55,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 01:57:55,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 01:57:55,220 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 10 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 01:57:55,221 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1326902382] [2020-10-15 01:57:55,221 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 01:57:55,221 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-15 01:57:55,221 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669493756] [2020-10-15 01:57:55,222 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 01:57:55,222 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 01:57:55,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 01:57:55,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-15 01:57:55,223 INFO L87 Difference]: Start difference. First operand 116 states and 158 transitions. Second operand 8 states. [2020-10-15 01:57:56,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 01:57:56,335 INFO L93 Difference]: Finished difference Result 214 states and 291 transitions. [2020-10-15 01:57:56,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-15 01:57:56,335 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 61 [2020-10-15 01:57:56,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 01:57:56,337 INFO L225 Difference]: With dead ends: 214 [2020-10-15 01:57:56,337 INFO L226 Difference]: Without dead ends: 212 [2020-10-15 01:57:56,338 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-10-15 01:57:56,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-10-15 01:57:56,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 197. [2020-10-15 01:57:56,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2020-10-15 01:57:56,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 271 transitions. [2020-10-15 01:57:56,350 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 271 transitions. Word has length 61 [2020-10-15 01:57:56,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 01:57:56,350 INFO L479 AbstractCegarLoop]: Abstraction has 197 states and 271 transitions. [2020-10-15 01:57:56,351 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 01:57:56,351 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 271 transitions. [2020-10-15 01:57:56,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-15 01:57:56,352 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 01:57:56,352 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 6, 6, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 01:57:56,352 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-15 01:57:56,352 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 01:57:56,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 01:57:56,353 INFO L82 PathProgramCache]: Analyzing trace with hash -1744733813, now seen corresponding path program 2 times [2020-10-15 01:57:56,353 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 01:57:56,353 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [956644919] [2020-10-15 01:57:56,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 01:57:56,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:57:56,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:57:57,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:57:59,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:58:01,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:58:01,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-15 01:58:01,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 01:58:01,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-15 01:58:01,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:58:01,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:58:01,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-15 01:58:01,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-15 01:58:01,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-15 01:58:01,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 01:58:01,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 01:58:01,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:58:01,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:58:01,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:58:01,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 01:58:01,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:58:01,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 01:58:01,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:58:01,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:58:01,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 01:58:01,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 01:58:01,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 01:58:01,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 01:58:01,980 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 44 proven. 102 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2020-10-15 01:58:01,980 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [956644919] [2020-10-15 01:58:01,981 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 01:58:01,981 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-15 01:58:01,983 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967124101] [2020-10-15 01:58:01,985 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 01:58:01,986 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 01:58:01,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 01:58:01,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-15 01:58:01,986 INFO L87 Difference]: Start difference. First operand 197 states and 271 transitions. Second operand 8 states. [2020-10-15 01:58:02,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 01:58:02,894 INFO L93 Difference]: Finished difference Result 206 states and 281 transitions. [2020-10-15 01:58:02,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-15 01:58:02,901 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 103 [2020-10-15 01:58:02,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 01:58:02,901 INFO L225 Difference]: With dead ends: 206 [2020-10-15 01:58:02,901 INFO L226 Difference]: Without dead ends: 0 [2020-10-15 01:58:02,902 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 7 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2020-10-15 01:58:02,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-15 01:58:02,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-15 01:58:02,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-15 01:58:02,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-15 01:58:02,903 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 103 [2020-10-15 01:58:02,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 01:58:02,904 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-15 01:58:02,904 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 01:58:02,904 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-15 01:58:02,904 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-15 01:58:02,904 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-15 01:58:02,906 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-15 01:58:03,287 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 136 [2020-10-15 01:58:03,537 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 43 [2020-10-15 01:58:04,068 WARN L193 SmtUtils]: Spent 516.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 55 [2020-10-15 01:58:04,074 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-15 01:58:04,074 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~m_recv_ack_2~0 |old(~m_recv_ack_2~0)|) (= ~m_msg_1_2~0 |old(~m_msg_1_2~0)|) (= ~m_Protocol~0 |old(~m_Protocol~0)|) (= ~m_recv_ack_1_2~0 |old(~m_recv_ack_1_2~0)|) (= ~m_msg_2~0 |old(~m_msg_2~0)|) (= ~m_recv_ack_1_1~0 |old(~m_recv_ack_1_1~0)|) (= ~m_msg_1_1~0 |old(~m_msg_1_1~0)|)) [2020-10-15 01:58:04,075 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-15 01:58:04,075 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-15 01:58:04,075 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-15 01:58:04,075 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-15 01:58:04,075 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-15 01:58:04,075 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 14 566) no Hoare annotation was computed. [2020-10-15 01:58:04,075 INFO L268 CegarLoopResult]: For program point L498(lines 498 500) no Hoare annotation was computed. [2020-10-15 01:58:04,075 INFO L268 CegarLoopResult]: For program point L366(lines 366 368) no Hoare annotation was computed. [2020-10-15 01:58:04,076 INFO L268 CegarLoopResult]: For program point L466(lines 466 468) no Hoare annotation was computed. [2020-10-15 01:58:04,076 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 14 566) no Hoare annotation was computed. [2020-10-15 01:58:04,076 INFO L268 CegarLoopResult]: For program point L39(lines 39 58) no Hoare annotation was computed. [2020-10-15 01:58:04,076 INFO L268 CegarLoopResult]: For program point L40(lines 40 55) no Hoare annotation was computed. [2020-10-15 01:58:04,076 INFO L268 CegarLoopResult]: For program point L140(lines 140 155) no Hoare annotation was computed. [2020-10-15 01:58:04,076 INFO L268 CegarLoopResult]: For program point L240(lines 240 255) no Hoare annotation was computed. [2020-10-15 01:58:04,076 INFO L268 CegarLoopResult]: For program point L108(lines 108 123) no Hoare annotation was computed. [2020-10-15 01:58:04,076 INFO L268 CegarLoopResult]: For program point L42(lines 42 53) no Hoare annotation was computed. [2020-10-15 01:58:04,077 INFO L268 CegarLoopResult]: For program point L340(lines 340 355) no Hoare annotation was computed. [2020-10-15 01:58:04,077 INFO L268 CegarLoopResult]: For program point L208(lines 208 223) no Hoare annotation was computed. [2020-10-15 01:58:04,077 INFO L268 CegarLoopResult]: For program point L142(lines 142 153) no Hoare annotation was computed. [2020-10-15 01:58:04,077 INFO L268 CegarLoopResult]: For program point L76(lines 76 91) no Hoare annotation was computed. [2020-10-15 01:58:04,077 INFO L268 CegarLoopResult]: For program point L440(lines 440 455) no Hoare annotation was computed. [2020-10-15 01:58:04,077 INFO L268 CegarLoopResult]: For program point L308(lines 308 323) no Hoare annotation was computed. [2020-10-15 01:58:04,077 INFO L268 CegarLoopResult]: For program point L242(lines 242 253) no Hoare annotation was computed. [2020-10-15 01:58:04,078 INFO L268 CegarLoopResult]: For program point L176(lines 176 191) no Hoare annotation was computed. [2020-10-15 01:58:04,078 INFO L268 CegarLoopResult]: For program point L110(lines 110 121) no Hoare annotation was computed. [2020-10-15 01:58:04,078 INFO L268 CegarLoopResult]: For program point L540(lines 540 555) no Hoare annotation was computed. [2020-10-15 01:58:04,078 INFO L268 CegarLoopResult]: For program point L408(lines 408 423) no Hoare annotation was computed. [2020-10-15 01:58:04,078 INFO L268 CegarLoopResult]: For program point L342(lines 342 353) no Hoare annotation was computed. [2020-10-15 01:58:04,078 INFO L268 CegarLoopResult]: For program point L276(lines 276 291) no Hoare annotation was computed. [2020-10-15 01:58:04,078 INFO L268 CegarLoopResult]: For program point L210(lines 210 221) no Hoare annotation was computed. [2020-10-15 01:58:04,078 INFO L268 CegarLoopResult]: For program point L78(lines 78 89) no Hoare annotation was computed. [2020-10-15 01:58:04,079 INFO L268 CegarLoopResult]: For program point L508(lines 508 523) no Hoare annotation was computed. [2020-10-15 01:58:04,079 INFO L268 CegarLoopResult]: For program point L442(lines 442 453) no Hoare annotation was computed. [2020-10-15 01:58:04,079 INFO L268 CegarLoopResult]: For program point L376(lines 376 391) no Hoare annotation was computed. [2020-10-15 01:58:04,079 INFO L268 CegarLoopResult]: For program point L310(lines 310 321) no Hoare annotation was computed. [2020-10-15 01:58:04,079 INFO L268 CegarLoopResult]: For program point L178(lines 178 189) no Hoare annotation was computed. [2020-10-15 01:58:04,079 INFO L268 CegarLoopResult]: For program point L46(lines 46 48) no Hoare annotation was computed. [2020-10-15 01:58:04,079 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 565) no Hoare annotation was computed. [2020-10-15 01:58:04,079 INFO L268 CegarLoopResult]: For program point L542(lines 542 553) no Hoare annotation was computed. [2020-10-15 01:58:04,080 INFO L268 CegarLoopResult]: For program point L476(lines 476 491) no Hoare annotation was computed. [2020-10-15 01:58:04,080 INFO L268 CegarLoopResult]: For program point L410(lines 410 421) no Hoare annotation was computed. [2020-10-15 01:58:04,080 INFO L268 CegarLoopResult]: For program point L278(lines 278 289) no Hoare annotation was computed. [2020-10-15 01:58:04,080 INFO L268 CegarLoopResult]: For program point L146(lines 146 148) no Hoare annotation was computed. [2020-10-15 01:58:04,080 INFO L268 CegarLoopResult]: For program point L510(lines 510 521) no Hoare annotation was computed. [2020-10-15 01:58:04,080 INFO L268 CegarLoopResult]: For program point L378(lines 378 389) no Hoare annotation was computed. [2020-10-15 01:58:04,080 INFO L268 CegarLoopResult]: For program point L246(lines 246 248) no Hoare annotation was computed. [2020-10-15 01:58:04,080 INFO L268 CegarLoopResult]: For program point L114(lines 114 116) no Hoare annotation was computed. [2020-10-15 01:58:04,081 INFO L268 CegarLoopResult]: For program point L478(lines 478 489) no Hoare annotation was computed. [2020-10-15 01:58:04,081 INFO L268 CegarLoopResult]: For program point L346(lines 346 348) no Hoare annotation was computed. [2020-10-15 01:58:04,081 INFO L268 CegarLoopResult]: For program point L214(lines 214 216) no Hoare annotation was computed. [2020-10-15 01:58:04,081 INFO L268 CegarLoopResult]: For program point L82(lines 82 84) no Hoare annotation was computed. [2020-10-15 01:58:04,081 INFO L268 CegarLoopResult]: For program point L446(lines 446 448) no Hoare annotation was computed. [2020-10-15 01:58:04,081 INFO L268 CegarLoopResult]: For program point L314(lines 314 316) no Hoare annotation was computed. [2020-10-15 01:58:04,081 INFO L268 CegarLoopResult]: For program point L182(lines 182 184) no Hoare annotation was computed. [2020-10-15 01:58:04,081 INFO L268 CegarLoopResult]: For program point L546(lines 546 548) no Hoare annotation was computed. [2020-10-15 01:58:04,082 INFO L268 CegarLoopResult]: For program point L414(lines 414 416) no Hoare annotation was computed. [2020-10-15 01:58:04,082 INFO L268 CegarLoopResult]: For program point L282(lines 282 284) no Hoare annotation was computed. [2020-10-15 01:58:04,082 INFO L264 CegarLoopResult]: At program point L547(lines 14 566) the Hoare annotation is: false [2020-10-15 01:58:04,082 INFO L268 CegarLoopResult]: For program point L514(lines 514 516) no Hoare annotation was computed. [2020-10-15 01:58:04,082 INFO L268 CegarLoopResult]: For program point L382(lines 382 384) no Hoare annotation was computed. [2020-10-15 01:58:04,082 INFO L268 CegarLoopResult]: For program point L482(lines 482 484) no Hoare annotation was computed. [2020-10-15 01:58:04,083 INFO L264 CegarLoopResult]: At program point L24-2(lines 24 561) the Hoare annotation is: (let ((.cse4 (<= 0 (+ main_~this_expect~0 (* 2 (div (* main_~this_expect~0 (- 1)) 2))))) (.cse5 (< 0 (+ (div main_~this_buffer_empty~0 4294967296) 1))) (.cse6 (<= main_~this_buffer_empty~0 0)) (.cse0 (<= 0 (+ main_~P8~0 2147483648))) (.cse1 (<= main_~this_buffer_empty~0 1)) (.cse2 (<= main_~P8~0 2147483647)) (.cse3 (<= 1 main_~this_buffer_empty~0))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 (<= main_~q~0 1)) (and .cse0 .cse2 .cse4 (<= 5 main_~q~0) .cse5 .cse6) (and (= main_~q~0 0) (<= 0 main_~this_expect~0) .cse5 (<= main_~this_expect~0 0) .cse6) (and (<= main_~q~0 4) .cse0 .cse1 .cse2 .cse3 (<= 4 main_~q~0) (not (= (* (div main_~this_expect~0 2) 2) main_~this_expect~0))))) [2020-10-15 01:58:04,083 INFO L268 CegarLoopResult]: For program point L24-3(lines 24 561) no Hoare annotation was computed. [2020-10-15 01:58:04,083 INFO L268 CegarLoopResult]: For program point L124(lines 124 139) no Hoare annotation was computed. [2020-10-15 01:58:04,083 INFO L268 CegarLoopResult]: For program point L224(lines 224 239) no Hoare annotation was computed. [2020-10-15 01:58:04,083 INFO L268 CegarLoopResult]: For program point L92(lines 92 107) no Hoare annotation was computed. [2020-10-15 01:58:04,083 INFO L268 CegarLoopResult]: For program point L59(lines 59 158) no Hoare annotation was computed. [2020-10-15 01:58:04,083 INFO L268 CegarLoopResult]: For program point L324(lines 324 339) no Hoare annotation was computed. [2020-10-15 01:58:04,083 INFO L268 CegarLoopResult]: For program point L192(lines 192 207) no Hoare annotation was computed. [2020-10-15 01:58:04,084 INFO L268 CegarLoopResult]: For program point L159(lines 159 258) no Hoare annotation was computed. [2020-10-15 01:58:04,084 INFO L268 CegarLoopResult]: For program point L126(lines 126 137) no Hoare annotation was computed. [2020-10-15 01:58:04,084 INFO L268 CegarLoopResult]: For program point L60(lines 60 75) no Hoare annotation was computed. [2020-10-15 01:58:04,084 INFO L268 CegarLoopResult]: For program point L424(lines 424 439) no Hoare annotation was computed. [2020-10-15 01:58:04,084 INFO L268 CegarLoopResult]: For program point L292(lines 292 307) no Hoare annotation was computed. [2020-10-15 01:58:04,084 INFO L268 CegarLoopResult]: For program point L259(lines 259 358) no Hoare annotation was computed. [2020-10-15 01:58:04,084 INFO L268 CegarLoopResult]: For program point L226(lines 226 237) no Hoare annotation was computed. [2020-10-15 01:58:04,084 INFO L268 CegarLoopResult]: For program point L160(lines 160 175) no Hoare annotation was computed. [2020-10-15 01:58:04,084 INFO L268 CegarLoopResult]: For program point L94(lines 94 105) no Hoare annotation was computed. [2020-10-15 01:58:04,085 INFO L264 CegarLoopResult]: At program point L557(lines 24 561) the Hoare annotation is: (let ((.cse4 (<= 0 (+ main_~this_expect~0 (* 2 (div (* main_~this_expect~0 (- 1)) 2))))) (.cse5 (< 0 (+ (div main_~this_buffer_empty~0 4294967296) 1))) (.cse6 (<= main_~this_buffer_empty~0 0)) (.cse0 (<= 0 (+ main_~P8~0 2147483648))) (.cse1 (<= main_~this_buffer_empty~0 1)) (.cse2 (<= main_~P8~0 2147483647)) (.cse3 (<= 1 main_~this_buffer_empty~0)) (.cse8 (div main_~this_expect~0 2))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 (<= main_~q~0 1)) (and .cse0 .cse2 .cse4 (<= 5 main_~q~0) .cse5 .cse6) (and (let ((.cse7 (= main_~q~0 0))) (or (and .cse7 .cse5 .cse6) (and .cse1 .cse7 .cse3))) (<= main_~this_expect~0 (* 2 .cse8))) (and .cse0 .cse2 (= main_~q~0 3) (<= main_~this_expect~0 (+ (* 2 (div (+ main_~this_expect~0 (- 1)) 2)) 1)) .cse5 .cse6) (and (<= main_~q~0 4) .cse0 .cse1 .cse2 .cse3 (<= 4 main_~q~0) (not (= (* .cse8 2) main_~this_expect~0))))) [2020-10-15 01:58:04,085 INFO L268 CegarLoopResult]: For program point L524(lines 524 539) no Hoare annotation was computed. [2020-10-15 01:58:04,085 INFO L268 CegarLoopResult]: For program point L392(lines 392 407) no Hoare annotation was computed. [2020-10-15 01:58:04,085 INFO L268 CegarLoopResult]: For program point L359(lines 359 458) no Hoare annotation was computed. [2020-10-15 01:58:04,085 INFO L268 CegarLoopResult]: For program point L326(lines 326 337) no Hoare annotation was computed. [2020-10-15 01:58:04,085 INFO L268 CegarLoopResult]: For program point L260(lines 260 275) no Hoare annotation was computed. [2020-10-15 01:58:04,086 INFO L268 CegarLoopResult]: For program point L194(lines 194 205) no Hoare annotation was computed. [2020-10-15 01:58:04,086 INFO L268 CegarLoopResult]: For program point L62(lines 62 73) no Hoare annotation was computed. [2020-10-15 01:58:04,086 INFO L268 CegarLoopResult]: For program point L492(lines 492 507) no Hoare annotation was computed. [2020-10-15 01:58:04,086 INFO L268 CegarLoopResult]: For program point L459(lines 459 558) no Hoare annotation was computed. [2020-10-15 01:58:04,086 INFO L268 CegarLoopResult]: For program point L426(lines 426 437) no Hoare annotation was computed. [2020-10-15 01:58:04,086 INFO L268 CegarLoopResult]: For program point L360(lines 360 375) no Hoare annotation was computed. [2020-10-15 01:58:04,086 INFO L268 CegarLoopResult]: For program point L294(lines 294 305) no Hoare annotation was computed. [2020-10-15 01:58:04,086 INFO L268 CegarLoopResult]: For program point L162(lines 162 173) no Hoare annotation was computed. [2020-10-15 01:58:04,087 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 14 566) the Hoare annotation is: true [2020-10-15 01:58:04,087 INFO L268 CegarLoopResult]: For program point L526(lines 526 537) no Hoare annotation was computed. [2020-10-15 01:58:04,087 INFO L268 CegarLoopResult]: For program point L460(lines 460 475) no Hoare annotation was computed. [2020-10-15 01:58:04,087 INFO L268 CegarLoopResult]: For program point L394(lines 394 405) no Hoare annotation was computed. [2020-10-15 01:58:04,087 INFO L268 CegarLoopResult]: For program point L262(lines 262 273) no Hoare annotation was computed. [2020-10-15 01:58:04,087 INFO L268 CegarLoopResult]: For program point L130(lines 130 132) no Hoare annotation was computed. [2020-10-15 01:58:04,087 INFO L268 CegarLoopResult]: For program point L494(lines 494 505) no Hoare annotation was computed. [2020-10-15 01:58:04,087 INFO L268 CegarLoopResult]: For program point L362(lines 362 373) no Hoare annotation was computed. [2020-10-15 01:58:04,088 INFO L268 CegarLoopResult]: For program point L230(lines 230 232) no Hoare annotation was computed. [2020-10-15 01:58:04,088 INFO L268 CegarLoopResult]: For program point L98(lines 98 100) no Hoare annotation was computed. [2020-10-15 01:58:04,088 INFO L268 CegarLoopResult]: For program point L462(lines 462 473) no Hoare annotation was computed. [2020-10-15 01:58:04,088 INFO L268 CegarLoopResult]: For program point L330(lines 330 332) no Hoare annotation was computed. [2020-10-15 01:58:04,088 INFO L268 CegarLoopResult]: For program point L198(lines 198 200) no Hoare annotation was computed. [2020-10-15 01:58:04,088 INFO L268 CegarLoopResult]: For program point L66(lines 66 68) no Hoare annotation was computed. [2020-10-15 01:58:04,088 INFO L268 CegarLoopResult]: For program point L430(lines 430 432) no Hoare annotation was computed. [2020-10-15 01:58:04,088 INFO L268 CegarLoopResult]: For program point L298(lines 298 300) no Hoare annotation was computed. [2020-10-15 01:58:04,089 INFO L268 CegarLoopResult]: For program point L166(lines 166 168) no Hoare annotation was computed. [2020-10-15 01:58:04,089 INFO L268 CegarLoopResult]: For program point L530(lines 530 532) no Hoare annotation was computed. [2020-10-15 01:58:04,089 INFO L268 CegarLoopResult]: For program point L398(lines 398 400) no Hoare annotation was computed. [2020-10-15 01:58:04,089 INFO L268 CegarLoopResult]: For program point L266(lines 266 268) no Hoare annotation was computed. [2020-10-15 01:58:04,113 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 01:58:04 BoogieIcfgContainer [2020-10-15 01:58:04,113 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-15 01:58:04,115 INFO L168 Benchmark]: Toolchain (without parser) took 26981.71 ms. Allocated memory was 146.8 MB in the beginning and 581.4 MB in the end (delta: 434.6 MB). Free memory was 102.5 MB in the beginning and 203.0 MB in the end (delta: -100.6 MB). Peak memory consumption was 334.1 MB. Max. memory is 7.1 GB. [2020-10-15 01:58:04,116 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 146.8 MB. Free memory was 121.3 MB in the beginning and 120.9 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. [2020-10-15 01:58:04,117 INFO L168 Benchmark]: CACSL2BoogieTranslator took 600.44 ms. Allocated memory was 146.8 MB in the beginning and 205.0 MB in the end (delta: 58.2 MB). Free memory was 102.5 MB in the beginning and 177.5 MB in the end (delta: -75.1 MB). Peak memory consumption was 25.7 MB. Max. memory is 7.1 GB. [2020-10-15 01:58:04,117 INFO L168 Benchmark]: Boogie Preprocessor took 88.24 ms. Allocated memory is still 205.0 MB. Free memory was 177.5 MB in the beginning and 173.4 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. [2020-10-15 01:58:04,118 INFO L168 Benchmark]: RCFGBuilder took 995.58 ms. Allocated memory is still 205.0 MB. Free memory was 173.4 MB in the beginning and 119.5 MB in the end (delta: 53.9 MB). Peak memory consumption was 53.9 MB. Max. memory is 7.1 GB. [2020-10-15 01:58:04,118 INFO L168 Benchmark]: TraceAbstraction took 25292.12 ms. Allocated memory was 205.0 MB in the beginning and 581.4 MB in the end (delta: 376.4 MB). Free memory was 119.5 MB in the beginning and 203.0 MB in the end (delta: -83.5 MB). Peak memory consumption was 292.9 MB. Max. memory is 7.1 GB. [2020-10-15 01:58:04,121 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 146.8 MB. Free memory was 121.3 MB in the beginning and 120.9 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 600.44 ms. Allocated memory was 146.8 MB in the beginning and 205.0 MB in the end (delta: 58.2 MB). Free memory was 102.5 MB in the beginning and 177.5 MB in the end (delta: -75.1 MB). Peak memory consumption was 25.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 88.24 ms. Allocated memory is still 205.0 MB. Free memory was 177.5 MB in the beginning and 173.4 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 995.58 ms. Allocated memory is still 205.0 MB. Free memory was 173.4 MB in the beginning and 119.5 MB in the end (delta: 53.9 MB). Peak memory consumption was 53.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 25292.12 ms. Allocated memory was 205.0 MB in the beginning and 581.4 MB in the end (delta: 376.4 MB). Free memory was 119.5 MB in the beginning and 203.0 MB in the end (delta: -83.5 MB). Peak memory consumption was 292.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 565]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: (((((((0 <= P8 + 2147483648 && this_buffer_empty <= 1) && P8 <= 2147483647) && 1 <= this_buffer_empty) && 0 <= this_expect + 2 * (this_expect * -1 / 2)) && q <= 1) || (((((0 <= P8 + 2147483648 && P8 <= 2147483647) && 0 <= this_expect + 2 * (this_expect * -1 / 2)) && 5 <= q) && 0 < this_buffer_empty / 4294967296 + 1) && this_buffer_empty <= 0)) || ((((q == 0 && 0 <= this_expect) && 0 < this_buffer_empty / 4294967296 + 1) && this_expect <= 0) && this_buffer_empty <= 0)) || ((((((q <= 4 && 0 <= P8 + 2147483648) && this_buffer_empty <= 1) && P8 <= 2147483647) && 1 <= this_buffer_empty) && 4 <= q) && !(this_expect / 2 * 2 == this_expect)) - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: ((((((((0 <= P8 + 2147483648 && this_buffer_empty <= 1) && P8 <= 2147483647) && 1 <= this_buffer_empty) && 0 <= this_expect + 2 * (this_expect * -1 / 2)) && q <= 1) || (((((0 <= P8 + 2147483648 && P8 <= 2147483647) && 0 <= this_expect + 2 * (this_expect * -1 / 2)) && 5 <= q) && 0 < this_buffer_empty / 4294967296 + 1) && this_buffer_empty <= 0)) || ((((q == 0 && 0 < this_buffer_empty / 4294967296 + 1) && this_buffer_empty <= 0) || ((this_buffer_empty <= 1 && q == 0) && 1 <= this_buffer_empty)) && this_expect <= 2 * (this_expect / 2))) || (((((0 <= P8 + 2147483648 && P8 <= 2147483647) && q == 3) && this_expect <= 2 * ((this_expect + -1) / 2) + 1) && 0 < this_buffer_empty / 4294967296 + 1) && this_buffer_empty <= 0)) || ((((((q <= 4 && 0 <= P8 + 2147483648) && this_buffer_empty <= 1) && P8 <= 2147483647) && 1 <= this_buffer_empty) && 4 <= q) && !(this_expect / 2 * 2 == this_expect)) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 114 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 24.0s, OverallIterations: 18, TraceHistogramMax: 10, AutomataDifference: 8.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2698 SDtfs, 4817 SDslu, 217 SDs, 0 SdLazy, 4115 SolverSat, 177 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 185 GetRequests, 85 SyntacticMatches, 5 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 2.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=332occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 18 MinimizatonAttempts, 179 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 28 NumberOfFragments, 296 HoareAnnotationTreeSize, 7 FomulaSimplifications, 201571 FormulaSimplificationTreeSizeReduction, 0.3s HoareSimplificationTime, 7 FomulaSimplificationsInter, 20223 FormulaSimplificationTreeSizeReductionInter, 0.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 13.8s InterpolantComputationTime, 681 NumberOfCodeBlocks, 681 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 663 ConstructedInterpolants, 0 QuantifiedInterpolants, 376392 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 18 InterpolantComputations, 10 PerfectInterpolantSequences, 262/462 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...