/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/locks/test_locks_10.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 11:10:43,688 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 11:10:43,691 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 11:10:43,717 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 11:10:43,718 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 11:10:43,719 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 11:10:43,721 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 11:10:43,723 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 11:10:43,724 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 11:10:43,726 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 11:10:43,727 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 11:10:43,728 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 11:10:43,728 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 11:10:43,730 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 11:10:43,731 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 11:10:43,732 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 11:10:43,733 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 11:10:43,734 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 11:10:43,736 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 11:10:43,738 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 11:10:43,740 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 11:10:43,741 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 11:10:43,742 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 11:10:43,743 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 11:10:43,746 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 11:10:43,746 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 11:10:43,746 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 11:10:43,748 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 11:10:43,748 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 11:10:43,750 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 11:10:43,750 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 11:10:43,751 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 11:10:43,752 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 11:10:43,753 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 11:10:43,754 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 11:10:43,754 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 11:10:43,755 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 11:10:43,755 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 11:10:43,755 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 11:10:43,756 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 11:10:43,757 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 11:10:43,758 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 11:10:43,784 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 11:10:43,784 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 11:10:43,785 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 11:10:43,786 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 11:10:43,786 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 11:10:43,786 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 11:10:43,786 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 11:10:43,787 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 11:10:43,787 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 11:10:43,787 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 11:10:43,787 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 11:10:43,787 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 11:10:43,788 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 11:10:43,788 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 11:10:43,788 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 11:10:43,788 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 11:10:43,788 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 11:10:43,789 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 11:10:43,789 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 11:10:43,789 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 11:10:43,789 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 11:10:43,789 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:10:43,790 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 11:10:43,790 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 11:10:43,790 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 11:10:43,790 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 11:10:43,791 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 11:10:43,791 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 11:10:43,791 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 11:10:43,791 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; [2020-09-25 11:10:44,293 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 11:10:44,317 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 11:10:44,323 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 11:10:44,325 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 11:10:44,326 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 11:10:44,327 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/locks/test_locks_10.c [2020-09-25 11:10:44,421 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a7a44ba6f/c397179f54974a11bd5dbaca9222ea8b/FLAG1386e527f [2020-09-25 11:10:44,966 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 11:10:44,967 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/locks/test_locks_10.c [2020-09-25 11:10:44,976 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a7a44ba6f/c397179f54974a11bd5dbaca9222ea8b/FLAG1386e527f [2020-09-25 11:10:45,301 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a7a44ba6f/c397179f54974a11bd5dbaca9222ea8b [2020-09-25 11:10:45,314 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 11:10:45,320 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 11:10:45,322 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 11:10:45,322 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 11:10:45,326 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 11:10:45,328 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:10:45" (1/1) ... [2020-09-25 11:10:45,332 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55e164ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:10:45, skipping insertion in model container [2020-09-25 11:10:45,333 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:10:45" (1/1) ... [2020-09-25 11:10:45,342 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 11:10:45,372 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 11:10:45,610 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:10:45,619 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 11:10:45,653 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:10:45,671 INFO L208 MainTranslator]: Completed translation [2020-09-25 11:10:45,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:10:45 WrapperNode [2020-09-25 11:10:45,671 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 11:10:45,672 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 11:10:45,672 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 11:10:45,672 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 11:10:45,764 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:10:45" (1/1) ... [2020-09-25 11:10:45,764 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:10:45" (1/1) ... [2020-09-25 11:10:45,776 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:10:45" (1/1) ... [2020-09-25 11:10:45,777 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:10:45" (1/1) ... [2020-09-25 11:10:45,797 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:10:45" (1/1) ... [2020-09-25 11:10:45,810 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:10:45" (1/1) ... [2020-09-25 11:10:45,811 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:10:45" (1/1) ... [2020-09-25 11:10:45,819 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 11:10:45,819 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 11:10:45,820 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 11:10:45,820 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 11:10:45,821 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:10:45" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:10:45,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 11:10:45,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 11:10:45,891 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 11:10:45,891 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 11:10:45,891 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 11:10:45,891 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 11:10:45,891 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 11:10:45,892 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 11:10:46,337 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 11:10:46,337 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 11:10:46,344 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:10:46 BoogieIcfgContainer [2020-09-25 11:10:46,344 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 11:10:46,345 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 11:10:46,346 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 11:10:46,350 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 11:10:46,350 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 11:10:45" (1/3) ... [2020-09-25 11:10:46,351 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16fce211 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:10:46, skipping insertion in model container [2020-09-25 11:10:46,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:10:45" (2/3) ... [2020-09-25 11:10:46,352 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16fce211 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:10:46, skipping insertion in model container [2020-09-25 11:10:46,353 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:10:46" (3/3) ... [2020-09-25 11:10:46,355 INFO L109 eAbstractionObserver]: Analyzing ICFG test_locks_10.c [2020-09-25 11:10:46,368 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 11:10:46,379 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 11:10:46,403 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 11:10:46,438 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 11:10:46,438 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 11:10:46,438 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 11:10:46,439 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 11:10:46,439 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 11:10:46,439 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 11:10:46,439 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 11:10:46,439 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 11:10:46,473 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states. [2020-09-25 11:10:46,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-09-25 11:10:46,489 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:10:46,490 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:10:46,491 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:10:46,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:10:46,499 INFO L82 PathProgramCache]: Analyzing trace with hash -74913912, now seen corresponding path program 1 times [2020-09-25 11:10:46,509 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:10:46,509 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [865349686] [2020-09-25 11:10:46,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:10:46,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:46,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:46,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:46,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 11:10:46,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:10:46,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 268 [2020-09-25 11:10:46,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:46,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:46,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:10:46,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-09-25 11:10:46,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 11:10:46,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 11:10:47,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:10:47,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:47,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:47,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:47,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:10:47,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:10:47,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 11:10:47,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:47,050 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:47,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:10:47,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:10:47,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:10:47,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:10:47,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:10:47,070 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [865349686] [2020-09-25 11:10:47,073 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:10:47,073 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 11:10:47,074 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037490036] [2020-09-25 11:10:47,081 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 11:10:47,082 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:10:47,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 11:10:47,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 11:10:47,103 INFO L87 Difference]: Start difference. First operand 118 states. Second operand 3 states. [2020-09-25 11:10:47,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:10:47,186 INFO L93 Difference]: Finished difference Result 257 states and 353 transitions. [2020-09-25 11:10:47,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 11:10:47,188 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 73 [2020-09-25 11:10:47,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:10:47,206 INFO L225 Difference]: With dead ends: 257 [2020-09-25 11:10:47,207 INFO L226 Difference]: Without dead ends: 176 [2020-09-25 11:10:47,212 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 11:10:47,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2020-09-25 11:10:47,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 174. [2020-09-25 11:10:47,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-09-25 11:10:47,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 230 transitions. [2020-09-25 11:10:47,284 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 230 transitions. Word has length 73 [2020-09-25 11:10:47,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:10:47,285 INFO L479 AbstractCegarLoop]: Abstraction has 174 states and 230 transitions. [2020-09-25 11:10:47,285 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 11:10:47,285 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 230 transitions. [2020-09-25 11:10:47,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-09-25 11:10:47,288 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:10:47,289 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:10:47,289 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 11:10:47,289 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:10:47,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:10:47,290 INFO L82 PathProgramCache]: Analyzing trace with hash 328701044, now seen corresponding path program 1 times [2020-09-25 11:10:47,290 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:10:47,291 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1020997045] [2020-09-25 11:10:47,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:10:47,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:47,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:47,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:47,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-25 11:10:47,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:10:47,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-09-25 11:10:47,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:47,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:47,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:10:47,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-09-25 11:10:47,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 11:10:47,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:10:47,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:10:47,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:47,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:47,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:47,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:10:47,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:10:47,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 11:10:47,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:47,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:47,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:10:47,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:10:47,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:10:47,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:10:47,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:10:47,552 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1020997045] [2020-09-25 11:10:47,552 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:10:47,553 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 11:10:47,553 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855509875] [2020-09-25 11:10:47,555 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 11:10:47,556 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:10:47,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 11:10:47,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 11:10:47,557 INFO L87 Difference]: Start difference. First operand 174 states and 230 transitions. Second operand 3 states. [2020-09-25 11:10:47,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:10:47,589 INFO L93 Difference]: Finished difference Result 211 states and 283 transitions. [2020-09-25 11:10:47,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 11:10:47,590 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 74 [2020-09-25 11:10:47,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:10:47,593 INFO L225 Difference]: With dead ends: 211 [2020-09-25 11:10:47,594 INFO L226 Difference]: Without dead ends: 209 [2020-09-25 11:10:47,595 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 11:10:47,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2020-09-25 11:10:47,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 174. [2020-09-25 11:10:47,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-09-25 11:10:47,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 229 transitions. [2020-09-25 11:10:47,628 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 229 transitions. Word has length 74 [2020-09-25 11:10:47,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:10:47,629 INFO L479 AbstractCegarLoop]: Abstraction has 174 states and 229 transitions. [2020-09-25 11:10:47,629 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 11:10:47,629 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 229 transitions. [2020-09-25 11:10:47,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-09-25 11:10:47,632 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:10:47,632 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:10:47,633 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 11:10:47,633 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:10:47,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:10:47,634 INFO L82 PathProgramCache]: Analyzing trace with hash 1972879950, now seen corresponding path program 1 times [2020-09-25 11:10:47,634 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:10:47,634 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [223315412] [2020-09-25 11:10:47,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:10:47,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:47,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:47,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:47,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-25 11:10:47,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:10:47,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-09-25 11:10:47,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:47,726 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:47,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:10:47,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-09-25 11:10:47,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 11:10:47,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:10:47,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:10:47,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:47,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:47,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:47,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:10:47,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:10:47,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 11:10:47,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:47,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:47,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:10:47,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:10:47,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:10:47,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:10:47,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:10:47,776 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [223315412] [2020-09-25 11:10:47,777 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:10:47,777 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 11:10:47,777 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947806626] [2020-09-25 11:10:47,778 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 11:10:47,778 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:10:47,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 11:10:47,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 11:10:47,779 INFO L87 Difference]: Start difference. First operand 174 states and 229 transitions. Second operand 3 states. [2020-09-25 11:10:47,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:10:47,823 INFO L93 Difference]: Finished difference Result 426 states and 589 transitions. [2020-09-25 11:10:47,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 11:10:47,824 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 74 [2020-09-25 11:10:47,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:10:47,830 INFO L225 Difference]: With dead ends: 426 [2020-09-25 11:10:47,830 INFO L226 Difference]: Without dead ends: 297 [2020-09-25 11:10:47,832 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 11:10:47,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2020-09-25 11:10:47,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 295. [2020-09-25 11:10:47,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295 states. [2020-09-25 11:10:47,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 400 transitions. [2020-09-25 11:10:47,872 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 400 transitions. Word has length 74 [2020-09-25 11:10:47,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:10:47,873 INFO L479 AbstractCegarLoop]: Abstraction has 295 states and 400 transitions. [2020-09-25 11:10:47,874 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 11:10:47,874 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 400 transitions. [2020-09-25 11:10:47,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-09-25 11:10:47,879 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:10:47,879 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:10:47,879 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 11:10:47,879 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:10:47,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:10:47,880 INFO L82 PathProgramCache]: Analyzing trace with hash -618815907, now seen corresponding path program 1 times [2020-09-25 11:10:47,880 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:10:47,881 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1106406092] [2020-09-25 11:10:47,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:10:47,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:47,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:47,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:47,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-25 11:10:47,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:10:47,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-09-25 11:10:47,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:47,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:47,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:10:47,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-09-25 11:10:47,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 11:10:47,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:10:48,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:10:48,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:48,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:48,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:48,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:10:48,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:10:48,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 11:10:48,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:48,009 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:48,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:10:48,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:10:48,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:10:48,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:10:48,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:10:48,019 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1106406092] [2020-09-25 11:10:48,019 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:10:48,019 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 11:10:48,020 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401081103] [2020-09-25 11:10:48,020 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 11:10:48,020 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:10:48,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 11:10:48,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 11:10:48,021 INFO L87 Difference]: Start difference. First operand 295 states and 400 transitions. Second operand 3 states. [2020-09-25 11:10:48,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:10:48,039 INFO L93 Difference]: Finished difference Result 361 states and 496 transitions. [2020-09-25 11:10:48,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 11:10:48,039 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 75 [2020-09-25 11:10:48,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:10:48,042 INFO L225 Difference]: With dead ends: 361 [2020-09-25 11:10:48,042 INFO L226 Difference]: Without dead ends: 359 [2020-09-25 11:10:48,043 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 11:10:48,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2020-09-25 11:10:48,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 295. [2020-09-25 11:10:48,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295 states. [2020-09-25 11:10:48,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 398 transitions. [2020-09-25 11:10:48,055 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 398 transitions. Word has length 75 [2020-09-25 11:10:48,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:10:48,056 INFO L479 AbstractCegarLoop]: Abstraction has 295 states and 398 transitions. [2020-09-25 11:10:48,056 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 11:10:48,056 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 398 transitions. [2020-09-25 11:10:48,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-09-25 11:10:48,058 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:10:48,058 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:10:48,059 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 11:10:48,059 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:10:48,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:10:48,060 INFO L82 PathProgramCache]: Analyzing trace with hash 1029980604, now seen corresponding path program 1 times [2020-09-25 11:10:48,060 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:10:48,060 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1000905670] [2020-09-25 11:10:48,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:10:48,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:48,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:48,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:48,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-25 11:10:48,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:10:48,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-09-25 11:10:48,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:48,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:48,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:10:48,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-09-25 11:10:48,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 11:10:48,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:10:48,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:10:48,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:48,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:48,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:48,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:10:48,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:10:48,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 11:10:48,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:48,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:48,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:10:48,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:10:48,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:10:48,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:10:48,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:10:48,177 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1000905670] [2020-09-25 11:10:48,177 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:10:48,177 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 11:10:48,178 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214746343] [2020-09-25 11:10:48,178 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 11:10:48,179 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:10:48,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 11:10:48,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 11:10:48,179 INFO L87 Difference]: Start difference. First operand 295 states and 398 transitions. Second operand 3 states. [2020-09-25 11:10:48,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:10:48,203 INFO L93 Difference]: Finished difference Result 783 states and 1088 transitions. [2020-09-25 11:10:48,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 11:10:48,204 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 75 [2020-09-25 11:10:48,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:10:48,208 INFO L225 Difference]: With dead ends: 783 [2020-09-25 11:10:48,208 INFO L226 Difference]: Without dead ends: 533 [2020-09-25 11:10:48,210 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 11:10:48,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2020-09-25 11:10:48,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 531. [2020-09-25 11:10:48,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 531 states. [2020-09-25 11:10:48,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 531 states to 531 states and 726 transitions. [2020-09-25 11:10:48,228 INFO L78 Accepts]: Start accepts. Automaton has 531 states and 726 transitions. Word has length 75 [2020-09-25 11:10:48,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:10:48,228 INFO L479 AbstractCegarLoop]: Abstraction has 531 states and 726 transitions. [2020-09-25 11:10:48,228 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 11:10:48,229 INFO L276 IsEmpty]: Start isEmpty. Operand 531 states and 726 transitions. [2020-09-25 11:10:48,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-09-25 11:10:48,231 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:10:48,231 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:10:48,231 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 11:10:48,231 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:10:48,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:10:48,232 INFO L82 PathProgramCache]: Analyzing trace with hash 72930056, now seen corresponding path program 1 times [2020-09-25 11:10:48,232 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:10:48,232 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1908837069] [2020-09-25 11:10:48,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:10:48,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:48,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:48,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:48,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-25 11:10:48,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:10:48,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-09-25 11:10:48,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:48,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:48,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:10:48,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-09-25 11:10:48,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 11:10:48,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:10:48,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:10:48,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:48,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:48,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:48,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:10:48,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:10:48,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 11:10:48,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:48,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:48,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:10:48,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:10:48,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:10:48,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:10:48,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:10:48,350 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1908837069] [2020-09-25 11:10:48,350 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:10:48,351 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 11:10:48,351 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777302437] [2020-09-25 11:10:48,351 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 11:10:48,352 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:10:48,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 11:10:48,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 11:10:48,353 INFO L87 Difference]: Start difference. First operand 531 states and 726 transitions. Second operand 3 states. [2020-09-25 11:10:48,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:10:48,373 INFO L93 Difference]: Finished difference Result 651 states and 900 transitions. [2020-09-25 11:10:48,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 11:10:48,374 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 76 [2020-09-25 11:10:48,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:10:48,378 INFO L225 Difference]: With dead ends: 651 [2020-09-25 11:10:48,378 INFO L226 Difference]: Without dead ends: 649 [2020-09-25 11:10:48,379 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 11:10:48,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 649 states. [2020-09-25 11:10:48,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 649 to 531. [2020-09-25 11:10:48,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 531 states. [2020-09-25 11:10:48,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 531 states to 531 states and 722 transitions. [2020-09-25 11:10:48,399 INFO L78 Accepts]: Start accepts. Automaton has 531 states and 722 transitions. Word has length 76 [2020-09-25 11:10:48,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:10:48,399 INFO L479 AbstractCegarLoop]: Abstraction has 531 states and 722 transitions. [2020-09-25 11:10:48,400 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 11:10:48,400 INFO L276 IsEmpty]: Start isEmpty. Operand 531 states and 722 transitions. [2020-09-25 11:10:48,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-09-25 11:10:48,402 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:10:48,402 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:10:48,403 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 11:10:48,403 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:10:48,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:10:48,404 INFO L82 PathProgramCache]: Analyzing trace with hash 1864872322, now seen corresponding path program 1 times [2020-09-25 11:10:48,404 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:10:48,404 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [837996579] [2020-09-25 11:10:48,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:10:48,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:48,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:48,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:48,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-25 11:10:48,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:10:48,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-09-25 11:10:48,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:48,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:48,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:10:48,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-09-25 11:10:48,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 11:10:48,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:10:48,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:10:48,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:48,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:48,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:48,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:10:48,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:10:48,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 11:10:48,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:48,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:48,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:10:48,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:10:48,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:10:48,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:10:48,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:10:48,560 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [837996579] [2020-09-25 11:10:48,560 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:10:48,560 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 11:10:48,561 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569484965] [2020-09-25 11:10:48,561 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 11:10:48,562 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:10:48,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 11:10:48,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 11:10:48,562 INFO L87 Difference]: Start difference. First operand 531 states and 722 transitions. Second operand 3 states. [2020-09-25 11:10:48,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:10:48,597 INFO L93 Difference]: Finished difference Result 1479 states and 2044 transitions. [2020-09-25 11:10:48,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 11:10:48,599 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 76 [2020-09-25 11:10:48,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:10:48,604 INFO L225 Difference]: With dead ends: 1479 [2020-09-25 11:10:48,604 INFO L226 Difference]: Without dead ends: 993 [2020-09-25 11:10:48,607 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 11:10:48,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 993 states. [2020-09-25 11:10:48,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 993 to 991. [2020-09-25 11:10:48,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 991 states. [2020-09-25 11:10:48,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 991 states to 991 states and 1350 transitions. [2020-09-25 11:10:48,643 INFO L78 Accepts]: Start accepts. Automaton has 991 states and 1350 transitions. Word has length 76 [2020-09-25 11:10:48,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:10:48,643 INFO L479 AbstractCegarLoop]: Abstraction has 991 states and 1350 transitions. [2020-09-25 11:10:48,643 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 11:10:48,644 INFO L276 IsEmpty]: Start isEmpty. Operand 991 states and 1350 transitions. [2020-09-25 11:10:48,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-09-25 11:10:48,645 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:10:48,646 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:10:48,646 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 11:10:48,646 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:10:48,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:10:48,646 INFO L82 PathProgramCache]: Analyzing trace with hash 1976712176, now seen corresponding path program 1 times [2020-09-25 11:10:48,647 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:10:48,647 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [279231688] [2020-09-25 11:10:48,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:10:48,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:48,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:48,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:48,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-09-25 11:10:48,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:10:48,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-09-25 11:10:48,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:48,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:48,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:10:48,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-09-25 11:10:48,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 11:10:48,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:10:48,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:10:48,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:48,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:48,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:48,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:10:48,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:10:48,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 11:10:48,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:48,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:48,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:10:48,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:10:48,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:10:48,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:10:48,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:10:48,770 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [279231688] [2020-09-25 11:10:48,770 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:10:48,770 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 11:10:48,771 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425101943] [2020-09-25 11:10:48,771 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 11:10:48,772 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:10:48,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 11:10:48,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 11:10:48,773 INFO L87 Difference]: Start difference. First operand 991 states and 1350 transitions. Second operand 3 states. [2020-09-25 11:10:48,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:10:48,839 INFO L93 Difference]: Finished difference Result 2835 states and 3896 transitions. [2020-09-25 11:10:48,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 11:10:48,840 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2020-09-25 11:10:48,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:10:48,852 INFO L225 Difference]: With dead ends: 2835 [2020-09-25 11:10:48,852 INFO L226 Difference]: Without dead ends: 1889 [2020-09-25 11:10:48,855 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 11:10:48,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1889 states. [2020-09-25 11:10:48,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1889 to 1887. [2020-09-25 11:10:48,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1887 states. [2020-09-25 11:10:48,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1887 states to 1887 states and 2558 transitions. [2020-09-25 11:10:48,919 INFO L78 Accepts]: Start accepts. Automaton has 1887 states and 2558 transitions. Word has length 77 [2020-09-25 11:10:48,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:10:48,920 INFO L479 AbstractCegarLoop]: Abstraction has 1887 states and 2558 transitions. [2020-09-25 11:10:48,921 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 11:10:48,922 INFO L276 IsEmpty]: Start isEmpty. Operand 1887 states and 2558 transitions. [2020-09-25 11:10:48,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-09-25 11:10:48,925 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:10:48,926 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:10:48,926 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 11:10:48,926 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:10:48,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:10:48,927 INFO L82 PathProgramCache]: Analyzing trace with hash 42218801, now seen corresponding path program 1 times [2020-09-25 11:10:48,927 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:10:48,928 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [833060129] [2020-09-25 11:10:48,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:10:48,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:48,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:49,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:49,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-09-25 11:10:49,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:10:49,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-09-25 11:10:49,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:49,029 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:49,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:10:49,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-09-25 11:10:49,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 11:10:49,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:10:49,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:10:49,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:49,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:49,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:49,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:10:49,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:10:49,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 11:10:49,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:49,063 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:49,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:10:49,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:10:49,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:10:49,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:10:49,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:10:49,078 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [833060129] [2020-09-25 11:10:49,078 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:10:49,079 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 11:10:49,079 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690476446] [2020-09-25 11:10:49,080 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 11:10:49,080 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:10:49,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 11:10:49,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 11:10:49,080 INFO L87 Difference]: Start difference. First operand 1887 states and 2558 transitions. Second operand 3 states. [2020-09-25 11:10:49,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:10:49,114 INFO L93 Difference]: Finished difference Result 2307 states and 3152 transitions. [2020-09-25 11:10:49,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 11:10:49,114 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2020-09-25 11:10:49,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:10:49,126 INFO L225 Difference]: With dead ends: 2307 [2020-09-25 11:10:49,127 INFO L226 Difference]: Without dead ends: 2305 [2020-09-25 11:10:49,128 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 11:10:49,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2305 states. [2020-09-25 11:10:49,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2305 to 1887. [2020-09-25 11:10:49,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1887 states. [2020-09-25 11:10:49,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1887 states to 1887 states and 2542 transitions. [2020-09-25 11:10:49,201 INFO L78 Accepts]: Start accepts. Automaton has 1887 states and 2542 transitions. Word has length 77 [2020-09-25 11:10:49,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:10:49,202 INFO L479 AbstractCegarLoop]: Abstraction has 1887 states and 2542 transitions. [2020-09-25 11:10:49,202 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 11:10:49,202 INFO L276 IsEmpty]: Start isEmpty. Operand 1887 states and 2542 transitions. [2020-09-25 11:10:49,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-09-25 11:10:49,205 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:10:49,205 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:10:49,205 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 11:10:49,206 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:10:49,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:10:49,206 INFO L82 PathProgramCache]: Analyzing trace with hash -909829732, now seen corresponding path program 1 times [2020-09-25 11:10:49,206 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:10:49,207 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1780417535] [2020-09-25 11:10:49,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:10:49,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:49,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:49,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:49,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 11:10:49,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:10:49,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-09-25 11:10:49,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:49,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:49,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:10:49,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-09-25 11:10:49,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 11:10:49,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:10:49,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:10:49,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:49,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:49,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:49,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:10:49,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:10:49,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:10:49,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:49,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:49,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:10:49,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:10:49,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:10:49,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:10:49,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:10:49,347 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1780417535] [2020-09-25 11:10:49,347 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:10:49,347 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 11:10:49,347 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839651100] [2020-09-25 11:10:49,348 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 11:10:49,348 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:10:49,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 11:10:49,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 11:10:49,348 INFO L87 Difference]: Start difference. First operand 1887 states and 2542 transitions. Second operand 3 states. [2020-09-25 11:10:49,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:10:49,385 INFO L93 Difference]: Finished difference Result 2291 states and 3104 transitions. [2020-09-25 11:10:49,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 11:10:49,386 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 78 [2020-09-25 11:10:49,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:10:49,397 INFO L225 Difference]: With dead ends: 2291 [2020-09-25 11:10:49,397 INFO L226 Difference]: Without dead ends: 2289 [2020-09-25 11:10:49,399 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 11:10:49,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2289 states. [2020-09-25 11:10:49,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2289 to 1887. [2020-09-25 11:10:49,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1887 states. [2020-09-25 11:10:49,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1887 states to 1887 states and 2526 transitions. [2020-09-25 11:10:49,459 INFO L78 Accepts]: Start accepts. Automaton has 1887 states and 2526 transitions. Word has length 78 [2020-09-25 11:10:49,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:10:49,459 INFO L479 AbstractCegarLoop]: Abstraction has 1887 states and 2526 transitions. [2020-09-25 11:10:49,459 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 11:10:49,459 INFO L276 IsEmpty]: Start isEmpty. Operand 1887 states and 2526 transitions. [2020-09-25 11:10:49,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-09-25 11:10:49,461 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:10:49,462 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:10:49,462 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 11:10:49,462 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:10:49,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:10:49,463 INFO L82 PathProgramCache]: Analyzing trace with hash 1148780726, now seen corresponding path program 1 times [2020-09-25 11:10:49,463 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:10:49,463 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1555057776] [2020-09-25 11:10:49,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:10:49,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:49,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:49,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:49,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 11:10:49,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:10:49,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-09-25 11:10:49,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:49,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:49,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:10:49,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-09-25 11:10:49,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 11:10:49,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:10:49,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:10:49,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:49,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:49,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:49,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:10:49,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:10:49,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:10:49,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:49,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:49,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:10:49,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:10:49,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:10:49,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:10:49,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:10:49,571 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1555057776] [2020-09-25 11:10:49,571 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:10:49,571 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 11:10:49,571 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822237834] [2020-09-25 11:10:49,572 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 11:10:49,572 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:10:49,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 11:10:49,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 11:10:49,573 INFO L87 Difference]: Start difference. First operand 1887 states and 2526 transitions. Second operand 3 states. [2020-09-25 11:10:49,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:10:49,620 INFO L93 Difference]: Finished difference Result 5475 states and 7360 transitions. [2020-09-25 11:10:49,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 11:10:49,621 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 78 [2020-09-25 11:10:49,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:10:49,637 INFO L225 Difference]: With dead ends: 5475 [2020-09-25 11:10:49,637 INFO L226 Difference]: Without dead ends: 3633 [2020-09-25 11:10:49,641 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 11:10:49,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3633 states. [2020-09-25 11:10:49,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3633 to 3631. [2020-09-25 11:10:49,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3631 states. [2020-09-25 11:10:49,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3631 states to 3631 states and 4814 transitions. [2020-09-25 11:10:49,730 INFO L78 Accepts]: Start accepts. Automaton has 3631 states and 4814 transitions. Word has length 78 [2020-09-25 11:10:49,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:10:49,730 INFO L479 AbstractCegarLoop]: Abstraction has 3631 states and 4814 transitions. [2020-09-25 11:10:49,730 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 11:10:49,731 INFO L276 IsEmpty]: Start isEmpty. Operand 3631 states and 4814 transitions. [2020-09-25 11:10:49,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-09-25 11:10:49,734 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:10:49,734 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:10:49,734 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 11:10:49,734 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:10:49,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:10:49,735 INFO L82 PathProgramCache]: Analyzing trace with hash 1252709924, now seen corresponding path program 1 times [2020-09-25 11:10:49,735 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:10:49,735 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [602108497] [2020-09-25 11:10:49,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:10:49,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:49,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:49,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:49,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-25 11:10:49,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:10:49,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-09-25 11:10:49,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:49,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:49,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:10:49,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-09-25 11:10:49,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 11:10:49,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:10:49,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:10:49,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:49,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:49,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:49,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:10:49,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:10:49,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:10:49,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:49,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:49,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:10:49,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:10:49,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:10:49,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:10:49,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:10:49,827 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [602108497] [2020-09-25 11:10:49,827 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:10:49,828 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 11:10:49,828 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626953702] [2020-09-25 11:10:49,828 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 11:10:49,828 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:10:49,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 11:10:49,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 11:10:49,829 INFO L87 Difference]: Start difference. First operand 3631 states and 4814 transitions. Second operand 3 states. [2020-09-25 11:10:49,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:10:49,892 INFO L93 Difference]: Finished difference Result 10611 states and 14096 transitions. [2020-09-25 11:10:49,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 11:10:49,893 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 79 [2020-09-25 11:10:49,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:10:49,922 INFO L225 Difference]: With dead ends: 10611 [2020-09-25 11:10:49,923 INFO L226 Difference]: Without dead ends: 7025 [2020-09-25 11:10:49,930 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 11:10:49,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7025 states. [2020-09-25 11:10:50,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7025 to 7023. [2020-09-25 11:10:50,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7023 states. [2020-09-25 11:10:50,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7023 states to 7023 states and 9198 transitions. [2020-09-25 11:10:50,134 INFO L78 Accepts]: Start accepts. Automaton has 7023 states and 9198 transitions. Word has length 79 [2020-09-25 11:10:50,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:10:50,135 INFO L479 AbstractCegarLoop]: Abstraction has 7023 states and 9198 transitions. [2020-09-25 11:10:50,135 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 11:10:50,135 INFO L276 IsEmpty]: Start isEmpty. Operand 7023 states and 9198 transitions. [2020-09-25 11:10:50,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-09-25 11:10:50,140 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:10:50,141 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:10:50,141 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-25 11:10:50,142 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:10:50,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:10:50,142 INFO L82 PathProgramCache]: Analyzing trace with hash -358562811, now seen corresponding path program 1 times [2020-09-25 11:10:50,142 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:10:50,143 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1849793299] [2020-09-25 11:10:50,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:10:50,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:50,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:50,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:50,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-25 11:10:50,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:10:50,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-25 11:10:50,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:50,217 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:50,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:10:50,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-09-25 11:10:50,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 11:10:50,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:10:50,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:10:50,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:50,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:50,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:50,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:10:50,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:10:50,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 11:10:50,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:50,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:50,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:10:50,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:10:50,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:10:50,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:10:50,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:10:50,251 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1849793299] [2020-09-25 11:10:50,252 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:10:50,252 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 11:10:50,252 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268057766] [2020-09-25 11:10:50,252 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 11:10:50,253 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:10:50,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 11:10:50,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 11:10:50,254 INFO L87 Difference]: Start difference. First operand 7023 states and 9198 transitions. Second operand 3 states. [2020-09-25 11:10:50,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:10:50,324 INFO L93 Difference]: Finished difference Result 8435 states and 11056 transitions. [2020-09-25 11:10:50,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 11:10:50,324 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 79 [2020-09-25 11:10:50,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:10:50,378 INFO L225 Difference]: With dead ends: 8435 [2020-09-25 11:10:50,378 INFO L226 Difference]: Without dead ends: 8433 [2020-09-25 11:10:50,386 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 11:10:50,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8433 states. [2020-09-25 11:10:50,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8433 to 7023. [2020-09-25 11:10:50,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7023 states. [2020-09-25 11:10:50,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7023 states to 7023 states and 9134 transitions. [2020-09-25 11:10:50,545 INFO L78 Accepts]: Start accepts. Automaton has 7023 states and 9134 transitions. Word has length 79 [2020-09-25 11:10:50,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:10:50,545 INFO L479 AbstractCegarLoop]: Abstraction has 7023 states and 9134 transitions. [2020-09-25 11:10:50,545 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 11:10:50,546 INFO L276 IsEmpty]: Start isEmpty. Operand 7023 states and 9134 transitions. [2020-09-25 11:10:50,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-09-25 11:10:50,554 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:10:50,554 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:10:50,555 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-25 11:10:50,555 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:10:50,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:10:50,555 INFO L82 PathProgramCache]: Analyzing trace with hash -449157072, now seen corresponding path program 1 times [2020-09-25 11:10:50,556 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:10:50,556 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [707651946] [2020-09-25 11:10:50,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:10:50,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:50,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:50,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:50,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-25 11:10:50,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:10:50,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-09-25 11:10:50,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:50,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:50,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:10:50,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-09-25 11:10:50,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 11:10:50,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:10:50,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:10:50,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:50,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:50,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:50,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:10:50,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:10:50,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:10:50,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:50,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:50,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:10:50,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:10:50,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:10:50,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:10:50,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:10:50,662 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [707651946] [2020-09-25 11:10:50,662 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:10:50,663 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 11:10:50,663 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454487145] [2020-09-25 11:10:50,664 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 11:10:50,664 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:10:50,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 11:10:50,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 11:10:50,664 INFO L87 Difference]: Start difference. First operand 7023 states and 9134 transitions. Second operand 3 states. [2020-09-25 11:10:50,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:10:50,737 INFO L93 Difference]: Finished difference Result 8371 states and 10864 transitions. [2020-09-25 11:10:50,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 11:10:50,738 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2020-09-25 11:10:50,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:10:50,757 INFO L225 Difference]: With dead ends: 8371 [2020-09-25 11:10:50,757 INFO L226 Difference]: Without dead ends: 8369 [2020-09-25 11:10:50,761 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 11:10:50,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8369 states. [2020-09-25 11:10:50,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8369 to 7023. [2020-09-25 11:10:50,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7023 states. [2020-09-25 11:10:50,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7023 states to 7023 states and 9070 transitions. [2020-09-25 11:10:50,921 INFO L78 Accepts]: Start accepts. Automaton has 7023 states and 9070 transitions. Word has length 80 [2020-09-25 11:10:50,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:10:50,922 INFO L479 AbstractCegarLoop]: Abstraction has 7023 states and 9070 transitions. [2020-09-25 11:10:50,922 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 11:10:50,922 INFO L276 IsEmpty]: Start isEmpty. Operand 7023 states and 9070 transitions. [2020-09-25 11:10:50,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-09-25 11:10:50,927 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:10:50,928 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:10:50,928 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-25 11:10:50,928 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:10:50,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:10:50,928 INFO L82 PathProgramCache]: Analyzing trace with hash 179548138, now seen corresponding path program 1 times [2020-09-25 11:10:50,929 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:10:50,929 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [879501424] [2020-09-25 11:10:50,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:10:50,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:50,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:50,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:50,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-25 11:10:50,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:10:50,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-09-25 11:10:50,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:50,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:50,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:10:50,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-09-25 11:10:50,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 11:10:50,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:10:51,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:10:51,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:51,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:51,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:51,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:10:51,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:10:51,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:10:51,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:51,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:51,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:10:51,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:10:51,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:10:51,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:10:51,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:10:51,020 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [879501424] [2020-09-25 11:10:51,020 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:10:51,020 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 11:10:51,021 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976760709] [2020-09-25 11:10:51,021 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 11:10:51,021 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:10:51,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 11:10:51,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 11:10:51,022 INFO L87 Difference]: Start difference. First operand 7023 states and 9070 transitions. Second operand 3 states. [2020-09-25 11:10:51,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:10:51,129 INFO L93 Difference]: Finished difference Result 20595 states and 26608 transitions. [2020-09-25 11:10:51,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 11:10:51,129 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2020-09-25 11:10:51,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:10:51,157 INFO L225 Difference]: With dead ends: 20595 [2020-09-25 11:10:51,157 INFO L226 Difference]: Without dead ends: 13617 [2020-09-25 11:10:51,174 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 11:10:51,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13617 states. [2020-09-25 11:10:51,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13617 to 13615. [2020-09-25 11:10:51,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13615 states. [2020-09-25 11:10:51,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13615 states to 13615 states and 17326 transitions. [2020-09-25 11:10:51,583 INFO L78 Accepts]: Start accepts. Automaton has 13615 states and 17326 transitions. Word has length 80 [2020-09-25 11:10:51,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:10:51,584 INFO L479 AbstractCegarLoop]: Abstraction has 13615 states and 17326 transitions. [2020-09-25 11:10:51,584 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 11:10:51,584 INFO L276 IsEmpty]: Start isEmpty. Operand 13615 states and 17326 transitions. [2020-09-25 11:10:51,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-09-25 11:10:51,596 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:10:51,596 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:10:51,597 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-25 11:10:51,597 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:10:51,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:10:51,597 INFO L82 PathProgramCache]: Analyzing trace with hash 1037388505, now seen corresponding path program 1 times [2020-09-25 11:10:51,598 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:10:51,598 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [910656821] [2020-09-25 11:10:51,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:10:51,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:51,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:51,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:51,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 11:10:51,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:10:51,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-09-25 11:10:51,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:51,667 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:51,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:10:51,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-09-25 11:10:51,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 11:10:51,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:10:51,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:10:51,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:51,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:51,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:51,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:10:51,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:10:51,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:10:51,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:51,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:51,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:10:51,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:10:51,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:10:51,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:10:51,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:10:51,697 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [910656821] [2020-09-25 11:10:51,698 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:10:51,698 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 11:10:51,698 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168722506] [2020-09-25 11:10:51,699 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 11:10:51,699 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:10:51,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 11:10:51,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 11:10:51,699 INFO L87 Difference]: Start difference. First operand 13615 states and 17326 transitions. Second operand 3 states. [2020-09-25 11:10:51,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:10:51,820 INFO L93 Difference]: Finished difference Result 16051 states and 20272 transitions. [2020-09-25 11:10:51,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 11:10:51,821 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 81 [2020-09-25 11:10:51,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:10:51,853 INFO L225 Difference]: With dead ends: 16051 [2020-09-25 11:10:51,853 INFO L226 Difference]: Without dead ends: 16049 [2020-09-25 11:10:51,860 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 11:10:51,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16049 states. [2020-09-25 11:10:52,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16049 to 13615. [2020-09-25 11:10:52,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13615 states. [2020-09-25 11:10:52,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13615 states to 13615 states and 17198 transitions. [2020-09-25 11:10:52,170 INFO L78 Accepts]: Start accepts. Automaton has 13615 states and 17198 transitions. Word has length 81 [2020-09-25 11:10:52,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:10:52,171 INFO L479 AbstractCegarLoop]: Abstraction has 13615 states and 17198 transitions. [2020-09-25 11:10:52,171 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 11:10:52,171 INFO L276 IsEmpty]: Start isEmpty. Operand 13615 states and 17198 transitions. [2020-09-25 11:10:52,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-09-25 11:10:52,180 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:10:52,181 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:10:52,181 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-25 11:10:52,181 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:10:52,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:10:52,181 INFO L82 PathProgramCache]: Analyzing trace with hash 1271271512, now seen corresponding path program 1 times [2020-09-25 11:10:52,182 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:10:52,182 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1983069699] [2020-09-25 11:10:52,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:10:52,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:52,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:52,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:52,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 11:10:52,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:10:52,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-09-25 11:10:52,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:52,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:52,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:10:52,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-09-25 11:10:52,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 11:10:52,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:10:52,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:10:52,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:52,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:52,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:52,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:10:52,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:10:52,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:10:52,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:52,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:52,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:10:52,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:10:52,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:10:52,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:10:52,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:10:52,274 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1983069699] [2020-09-25 11:10:52,274 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:10:52,275 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 11:10:52,275 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343226538] [2020-09-25 11:10:52,275 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 11:10:52,276 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:10:52,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 11:10:52,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 11:10:52,276 INFO L87 Difference]: Start difference. First operand 13615 states and 17198 transitions. Second operand 3 states. [2020-09-25 11:10:52,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:10:52,595 INFO L93 Difference]: Finished difference Result 39987 states and 50480 transitions. [2020-09-25 11:10:52,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 11:10:52,596 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 81 [2020-09-25 11:10:52,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:10:52,645 INFO L225 Difference]: With dead ends: 39987 [2020-09-25 11:10:52,646 INFO L226 Difference]: Without dead ends: 26417 [2020-09-25 11:10:52,678 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 11:10:52,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26417 states. [2020-09-25 11:10:53,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26417 to 26415. [2020-09-25 11:10:53,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26415 states. [2020-09-25 11:10:53,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26415 states to 26415 states and 32814 transitions. [2020-09-25 11:10:53,949 INFO L78 Accepts]: Start accepts. Automaton has 26415 states and 32814 transitions. Word has length 81 [2020-09-25 11:10:53,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:10:53,949 INFO L479 AbstractCegarLoop]: Abstraction has 26415 states and 32814 transitions. [2020-09-25 11:10:53,949 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 11:10:53,949 INFO L276 IsEmpty]: Start isEmpty. Operand 26415 states and 32814 transitions. [2020-09-25 11:10:53,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-09-25 11:10:53,968 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:10:53,968 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:10:53,968 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-09-25 11:10:53,968 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:10:53,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:10:53,969 INFO L82 PathProgramCache]: Analyzing trace with hash -124338492, now seen corresponding path program 1 times [2020-09-25 11:10:53,969 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:10:53,969 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1567047521] [2020-09-25 11:10:53,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:10:53,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:53,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:54,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:54,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-25 11:10:54,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:10:54,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-09-25 11:10:54,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:54,041 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:54,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:10:54,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 76 [2020-09-25 11:10:54,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 11:10:54,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:10:54,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:10:54,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:54,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:54,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:54,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:10:54,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:10:54,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:10:54,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:54,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:54,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:10:54,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:10:54,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:10:54,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:10:54,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:10:54,073 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1567047521] [2020-09-25 11:10:54,074 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:10:54,074 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 11:10:54,074 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771977420] [2020-09-25 11:10:54,076 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 11:10:54,076 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:10:54,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 11:10:54,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 11:10:54,077 INFO L87 Difference]: Start difference. First operand 26415 states and 32814 transitions. Second operand 3 states. [2020-09-25 11:10:54,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:10:54,298 INFO L93 Difference]: Finished difference Result 30771 states and 37680 transitions. [2020-09-25 11:10:54,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 11:10:54,299 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 82 [2020-09-25 11:10:54,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:10:54,370 INFO L225 Difference]: With dead ends: 30771 [2020-09-25 11:10:54,370 INFO L226 Difference]: Without dead ends: 30769 [2020-09-25 11:10:54,385 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 11:10:54,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30769 states. [2020-09-25 11:10:54,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30769 to 26415. [2020-09-25 11:10:54,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26415 states. [2020-09-25 11:10:55,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26415 states to 26415 states and 32558 transitions. [2020-09-25 11:10:55,035 INFO L78 Accepts]: Start accepts. Automaton has 26415 states and 32558 transitions. Word has length 82 [2020-09-25 11:10:55,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:10:55,036 INFO L479 AbstractCegarLoop]: Abstraction has 26415 states and 32558 transitions. [2020-09-25 11:10:55,036 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 11:10:55,036 INFO L276 IsEmpty]: Start isEmpty. Operand 26415 states and 32558 transitions. [2020-09-25 11:10:55,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-09-25 11:10:55,063 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:10:55,064 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:10:55,064 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-09-25 11:10:55,065 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:10:55,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:10:55,065 INFO L82 PathProgramCache]: Analyzing trace with hash 754958110, now seen corresponding path program 1 times [2020-09-25 11:10:55,066 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:10:55,066 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2105246674] [2020-09-25 11:10:55,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:10:55,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:55,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:55,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:55,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-25 11:10:55,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:10:55,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-09-25 11:10:55,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:55,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:55,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:10:55,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 76 [2020-09-25 11:10:55,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 11:10:55,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:10:55,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:10:55,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:55,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:55,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:55,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:10:55,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:10:55,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 11:10:55,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:55,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:55,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:10:55,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:10:55,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:10:55,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:10:55,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:10:55,300 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2105246674] [2020-09-25 11:10:55,300 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:10:55,300 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 11:10:55,301 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686191744] [2020-09-25 11:10:55,301 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 11:10:55,302 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:10:55,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 11:10:55,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 11:10:55,302 INFO L87 Difference]: Start difference. First operand 26415 states and 32558 transitions. Second operand 3 states. [2020-09-25 11:10:55,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:10:55,905 INFO L93 Difference]: Finished difference Result 77617 states and 95535 transitions. [2020-09-25 11:10:55,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 11:10:55,906 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 82 [2020-09-25 11:10:55,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:10:56,015 INFO L225 Difference]: With dead ends: 77617 [2020-09-25 11:10:56,015 INFO L226 Difference]: Without dead ends: 26415 [2020-09-25 11:10:56,139 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 11:10:56,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26415 states. [2020-09-25 11:10:56,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26415 to 26415. [2020-09-25 11:10:56,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26415 states. [2020-09-25 11:10:56,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26415 states to 26415 states and 31534 transitions. [2020-09-25 11:10:56,808 INFO L78 Accepts]: Start accepts. Automaton has 26415 states and 31534 transitions. Word has length 82 [2020-09-25 11:10:56,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:10:56,808 INFO L479 AbstractCegarLoop]: Abstraction has 26415 states and 31534 transitions. [2020-09-25 11:10:56,809 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 11:10:56,809 INFO L276 IsEmpty]: Start isEmpty. Operand 26415 states and 31534 transitions. [2020-09-25 11:10:56,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-09-25 11:10:56,825 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:10:56,825 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:10:56,825 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-09-25 11:10:56,825 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:10:56,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:10:56,826 INFO L82 PathProgramCache]: Analyzing trace with hash -1778136659, now seen corresponding path program 1 times [2020-09-25 11:10:56,826 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:10:56,826 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1080243150] [2020-09-25 11:10:56,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:10:56,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:56,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:56,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:56,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 11:10:56,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:10:56,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-09-25 11:10:56,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:56,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:56,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:10:56,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-09-25 11:10:56,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 11:10:56,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:10:56,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:10:56,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:10:56,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:10:56,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:10:56,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:10:56,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:10:56,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 11:10:56,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:10:56,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:10:56,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:10:56,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:10:56,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:10:56,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:10:56,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:10:56,948 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1080243150] [2020-09-25 11:10:56,948 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:10:56,949 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 11:10:56,949 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639219186] [2020-09-25 11:10:56,949 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 11:10:56,949 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:10:56,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 11:10:56,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 11:10:56,950 INFO L87 Difference]: Start difference. First operand 26415 states and 31534 transitions. Second operand 3 states. [2020-09-25 11:10:57,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:10:57,090 INFO L93 Difference]: Finished difference Result 26415 states and 31534 transitions. [2020-09-25 11:10:57,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 11:10:57,091 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 83 [2020-09-25 11:10:57,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:10:57,092 INFO L225 Difference]: With dead ends: 26415 [2020-09-25 11:10:57,092 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 11:10:57,118 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 11:10:57,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 11:10:57,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 11:10:57,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 11:10:57,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 11:10:57,119 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 83 [2020-09-25 11:10:57,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:10:57,120 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 11:10:57,120 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 11:10:57,120 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 11:10:57,120 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 11:10:57,120 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-09-25 11:10:57,123 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 11:10:57,166 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-25 11:10:57,166 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 11:10:57,167 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 11:10:57,167 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-25 11:10:57,167 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 11:10:57,167 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 11:10:57,167 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 4 163) no Hoare annotation was computed. [2020-09-25 11:10:57,168 INFO L268 CegarLoopResult]: For program point L118-1(lines 39 158) no Hoare annotation was computed. [2020-09-25 11:10:57,168 INFO L268 CegarLoopResult]: For program point L52(line 52) no Hoare annotation was computed. [2020-09-25 11:10:57,168 INFO L268 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-09-25 11:10:57,168 INFO L268 CegarLoopResult]: For program point L135(line 135) no Hoare annotation was computed. [2020-09-25 11:10:57,168 INFO L268 CegarLoopResult]: For program point L102-1(lines 39 158) no Hoare annotation was computed. [2020-09-25 11:10:57,168 INFO L268 CegarLoopResult]: For program point L119(line 119) no Hoare annotation was computed. [2020-09-25 11:10:57,168 INFO L268 CegarLoopResult]: For program point L86-1(lines 39 158) no Hoare annotation was computed. [2020-09-25 11:10:57,169 INFO L268 CegarLoopResult]: For program point L103(line 103) no Hoare annotation was computed. [2020-09-25 11:10:57,169 INFO L268 CegarLoopResult]: For program point L37(line 37) no Hoare annotation was computed. [2020-09-25 11:10:57,169 INFO L268 CegarLoopResult]: For program point L70-1(lines 39 158) no Hoare annotation was computed. [2020-09-25 11:10:57,170 INFO L268 CegarLoopResult]: For program point L120(line 120) no Hoare annotation was computed. [2020-09-25 11:10:57,170 INFO L271 CegarLoopResult]: At program point L153-1(lines 39 158) the Hoare annotation is: true [2020-09-25 11:10:57,170 INFO L268 CegarLoopResult]: For program point L87(line 87) no Hoare annotation was computed. [2020-09-25 11:10:57,170 INFO L268 CegarLoopResult]: For program point L54(line 54) no Hoare annotation was computed. [2020-09-25 11:10:57,170 INFO L268 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed. [2020-09-25 11:10:57,170 INFO L268 CegarLoopResult]: For program point L21-1(line 21) no Hoare annotation was computed. [2020-09-25 11:10:57,170 INFO L268 CegarLoopResult]: For program point L21-2(line 21) no Hoare annotation was computed. [2020-09-25 11:10:57,171 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 4 163) no Hoare annotation was computed. [2020-09-25 11:10:57,171 INFO L268 CegarLoopResult]: For program point L71(line 71) no Hoare annotation was computed. [2020-09-25 11:10:57,171 INFO L268 CegarLoopResult]: For program point L154(line 154) no Hoare annotation was computed. [2020-09-25 11:10:57,171 INFO L264 CegarLoopResult]: At program point L154-1(lines 5 163) the Hoare annotation is: false [2020-09-25 11:10:57,171 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-09-25 11:10:57,171 INFO L268 CegarLoopResult]: For program point L138-1(lines 39 158) no Hoare annotation was computed. [2020-09-25 11:10:57,172 INFO L268 CegarLoopResult]: For program point L6(line 6) no Hoare annotation was computed. [2020-09-25 11:10:57,172 INFO L268 CegarLoopResult]: For program point L6-1(line 6) no Hoare annotation was computed. [2020-09-25 11:10:57,172 INFO L268 CegarLoopResult]: For program point L155(line 155) no Hoare annotation was computed. [2020-09-25 11:10:57,172 INFO L268 CegarLoopResult]: For program point L56(line 56) no Hoare annotation was computed. [2020-09-25 11:10:57,172 INFO L268 CegarLoopResult]: For program point L139(line 139) no Hoare annotation was computed. [2020-09-25 11:10:57,172 INFO L268 CegarLoopResult]: For program point L40(line 40) no Hoare annotation was computed. [2020-09-25 11:10:57,172 INFO L268 CegarLoopResult]: For program point L7(line 7) no Hoare annotation was computed. [2020-09-25 11:10:57,172 INFO L268 CegarLoopResult]: For program point L40-1(line 40) no Hoare annotation was computed. [2020-09-25 11:10:57,173 INFO L268 CegarLoopResult]: For program point L40-2(line 40) no Hoare annotation was computed. [2020-09-25 11:10:57,173 INFO L268 CegarLoopResult]: For program point L123-1(lines 39 158) no Hoare annotation was computed. [2020-09-25 11:10:57,173 INFO L268 CegarLoopResult]: For program point L90-1(lines 39 158) no Hoare annotation was computed. [2020-09-25 11:10:57,173 INFO L268 CegarLoopResult]: For program point L24(line 24) no Hoare annotation was computed. [2020-09-25 11:10:57,173 INFO L268 CegarLoopResult]: For program point L24-1(line 24) no Hoare annotation was computed. [2020-09-25 11:10:57,173 INFO L268 CegarLoopResult]: For program point L24-2(line 24) no Hoare annotation was computed. [2020-09-25 11:10:57,173 INFO L268 CegarLoopResult]: For program point L140(line 140) no Hoare annotation was computed. [2020-09-25 11:10:57,173 INFO L268 CegarLoopResult]: For program point L41(lines 41 43) no Hoare annotation was computed. [2020-09-25 11:10:57,173 INFO L268 CegarLoopResult]: For program point L74-1(lines 39 158) no Hoare annotation was computed. [2020-09-25 11:10:57,174 INFO L268 CegarLoopResult]: For program point L124(line 124) no Hoare annotation was computed. [2020-09-25 11:10:57,174 INFO L268 CegarLoopResult]: For program point L91(line 91) no Hoare annotation was computed. [2020-09-25 11:10:57,174 INFO L268 CegarLoopResult]: For program point L58(line 58) no Hoare annotation was computed. [2020-09-25 11:10:57,174 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-09-25 11:10:57,174 INFO L268 CegarLoopResult]: For program point L75(line 75) no Hoare annotation was computed. [2020-09-25 11:10:57,174 INFO L268 CegarLoopResult]: For program point L108-1(lines 39 158) no Hoare annotation was computed. [2020-09-25 11:10:57,175 INFO L268 CegarLoopResult]: For program point L9(line 9) no Hoare annotation was computed. [2020-09-25 11:10:57,175 INFO L268 CegarLoopResult]: For program point L9-1(line 9) no Hoare annotation was computed. [2020-09-25 11:10:57,175 INFO L268 CegarLoopResult]: For program point L9-2(line 9) no Hoare annotation was computed. [2020-09-25 11:10:57,176 INFO L268 CegarLoopResult]: For program point L125(line 125) no Hoare annotation was computed. [2020-09-25 11:10:57,176 INFO L268 CegarLoopResult]: For program point L109(line 109) no Hoare annotation was computed. [2020-09-25 11:10:57,177 INFO L268 CegarLoopResult]: For program point L10(line 10) no Hoare annotation was computed. [2020-09-25 11:10:57,177 INFO L271 CegarLoopResult]: At program point L159(lines 5 163) the Hoare annotation is: true [2020-09-25 11:10:57,177 INFO L268 CegarLoopResult]: For program point L60(line 60) no Hoare annotation was computed. [2020-09-25 11:10:57,177 INFO L268 CegarLoopResult]: For program point L27(line 27) no Hoare annotation was computed. [2020-09-25 11:10:57,178 INFO L268 CegarLoopResult]: For program point L27-1(line 27) no Hoare annotation was computed. [2020-09-25 11:10:57,178 INFO L268 CegarLoopResult]: For program point L27-2(line 27) no Hoare annotation was computed. [2020-09-25 11:10:57,178 INFO L268 CegarLoopResult]: For program point L110(line 110) no Hoare annotation was computed. [2020-09-25 11:10:57,178 INFO L268 CegarLoopResult]: For program point L143-1(lines 39 158) no Hoare annotation was computed. [2020-09-25 11:10:57,178 INFO L268 CegarLoopResult]: For program point L44(line 44) no Hoare annotation was computed. [2020-09-25 11:10:57,178 INFO L268 CegarLoopResult]: For program point L94-1(lines 39 158) no Hoare annotation was computed. [2020-09-25 11:10:57,178 INFO L268 CegarLoopResult]: For program point L28(line 28) no Hoare annotation was computed. [2020-09-25 11:10:57,178 INFO L268 CegarLoopResult]: For program point L144(line 144) no Hoare annotation was computed. [2020-09-25 11:10:57,178 INFO L268 CegarLoopResult]: For program point L78-1(lines 39 158) no Hoare annotation was computed. [2020-09-25 11:10:57,179 INFO L268 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-09-25 11:10:57,179 INFO L268 CegarLoopResult]: For program point L12-1(line 12) no Hoare annotation was computed. [2020-09-25 11:10:57,179 INFO L268 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-09-25 11:10:57,179 INFO L268 CegarLoopResult]: For program point L95(line 95) no Hoare annotation was computed. [2020-09-25 11:10:57,179 INFO L268 CegarLoopResult]: For program point L128-1(lines 39 158) no Hoare annotation was computed. [2020-09-25 11:10:57,179 INFO L268 CegarLoopResult]: For program point L62(line 62) no Hoare annotation was computed. [2020-09-25 11:10:57,179 INFO L268 CegarLoopResult]: For program point L145(line 145) no Hoare annotation was computed. [2020-09-25 11:10:57,179 INFO L268 CegarLoopResult]: For program point L79(line 79) no Hoare annotation was computed. [2020-09-25 11:10:57,179 INFO L268 CegarLoopResult]: For program point L46(line 46) no Hoare annotation was computed. [2020-09-25 11:10:57,180 INFO L268 CegarLoopResult]: For program point L13(line 13) no Hoare annotation was computed. [2020-09-25 11:10:57,180 INFO L268 CegarLoopResult]: For program point L162(line 162) no Hoare annotation was computed. [2020-09-25 11:10:57,180 INFO L268 CegarLoopResult]: For program point L129(line 129) no Hoare annotation was computed. [2020-09-25 11:10:57,180 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 161) no Hoare annotation was computed. [2020-09-25 11:10:57,180 INFO L268 CegarLoopResult]: For program point L30(line 30) no Hoare annotation was computed. [2020-09-25 11:10:57,180 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 4 163) the Hoare annotation is: true [2020-09-25 11:10:57,180 INFO L268 CegarLoopResult]: For program point L30-1(line 30) no Hoare annotation was computed. [2020-09-25 11:10:57,180 INFO L268 CegarLoopResult]: For program point L30-2(line 30) no Hoare annotation was computed. [2020-09-25 11:10:57,181 INFO L268 CegarLoopResult]: For program point L113-1(lines 39 158) no Hoare annotation was computed. [2020-09-25 11:10:57,181 INFO L268 CegarLoopResult]: For program point L130(line 130) no Hoare annotation was computed. [2020-09-25 11:10:57,181 INFO L268 CegarLoopResult]: For program point L31(line 31) no Hoare annotation was computed. [2020-09-25 11:10:57,181 INFO L268 CegarLoopResult]: For program point L114(line 114) no Hoare annotation was computed. [2020-09-25 11:10:57,181 INFO L268 CegarLoopResult]: For program point L48(line 48) no Hoare annotation was computed. [2020-09-25 11:10:57,181 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-09-25 11:10:57,181 INFO L268 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2020-09-25 11:10:57,181 INFO L268 CegarLoopResult]: For program point L15-2(line 15) no Hoare annotation was computed. [2020-09-25 11:10:57,181 INFO L268 CegarLoopResult]: For program point L98-1(lines 39 158) no Hoare annotation was computed. [2020-09-25 11:10:57,182 INFO L268 CegarLoopResult]: For program point L115(line 115) no Hoare annotation was computed. [2020-09-25 11:10:57,182 INFO L268 CegarLoopResult]: For program point L148-1(lines 39 158) no Hoare annotation was computed. [2020-09-25 11:10:57,182 INFO L268 CegarLoopResult]: For program point L82-1(lines 39 158) no Hoare annotation was computed. [2020-09-25 11:10:57,182 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-25 11:10:57,182 INFO L268 CegarLoopResult]: For program point L99(line 99) no Hoare annotation was computed. [2020-09-25 11:10:57,182 INFO L268 CegarLoopResult]: For program point L66(lines 66 68) no Hoare annotation was computed. [2020-09-25 11:10:57,182 INFO L268 CegarLoopResult]: For program point L33(line 33) no Hoare annotation was computed. [2020-09-25 11:10:57,182 INFO L268 CegarLoopResult]: For program point L33-1(line 33) no Hoare annotation was computed. [2020-09-25 11:10:57,183 INFO L268 CegarLoopResult]: For program point L66-2(lines 39 158) no Hoare annotation was computed. [2020-09-25 11:10:57,183 INFO L268 CegarLoopResult]: For program point L33-2(line 33) no Hoare annotation was computed. [2020-09-25 11:10:57,183 INFO L268 CegarLoopResult]: For program point L149(line 149) no Hoare annotation was computed. [2020-09-25 11:10:57,184 INFO L268 CegarLoopResult]: For program point L83(line 83) no Hoare annotation was computed. [2020-09-25 11:10:57,184 INFO L268 CegarLoopResult]: For program point L50(line 50) no Hoare annotation was computed. [2020-09-25 11:10:57,184 INFO L268 CegarLoopResult]: For program point L133-1(lines 39 158) no Hoare annotation was computed. [2020-09-25 11:10:57,184 INFO L268 CegarLoopResult]: For program point L67(line 67) no Hoare annotation was computed. [2020-09-25 11:10:57,184 INFO L268 CegarLoopResult]: For program point L34(line 34) no Hoare annotation was computed. [2020-09-25 11:10:57,184 INFO L268 CegarLoopResult]: For program point L150(line 150) no Hoare annotation was computed. [2020-09-25 11:10:57,185 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-09-25 11:10:57,185 INFO L268 CegarLoopResult]: For program point L18-1(line 18) no Hoare annotation was computed. [2020-09-25 11:10:57,185 INFO L268 CegarLoopResult]: For program point L18-2(line 18) no Hoare annotation was computed. [2020-09-25 11:10:57,185 INFO L268 CegarLoopResult]: For program point L134(line 134) no Hoare annotation was computed. [2020-09-25 11:10:57,199 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 11:10:57 BoogieIcfgContainer [2020-09-25 11:10:57,200 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 11:10:57,203 INFO L168 Benchmark]: Toolchain (without parser) took 11885.83 ms. Allocated memory was 135.8 MB in the beginning and 757.6 MB in the end (delta: 621.8 MB). Free memory was 97.6 MB in the beginning and 384.9 MB in the end (delta: -287.3 MB). Peak memory consumption was 334.5 MB. Max. memory is 7.1 GB. [2020-09-25 11:10:57,208 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 135.8 MB. Free memory was 116.0 MB in the beginning and 115.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 11:10:57,210 INFO L168 Benchmark]: CACSL2BoogieTranslator took 350.24 ms. Allocated memory is still 135.8 MB. Free memory was 97.0 MB in the beginning and 85.8 MB in the end (delta: 11.2 MB). Peak memory consumption was 11.2 MB. Max. memory is 7.1 GB. [2020-09-25 11:10:57,211 INFO L168 Benchmark]: Boogie Preprocessor took 146.91 ms. Allocated memory was 135.8 MB in the beginning and 198.2 MB in the end (delta: 62.4 MB). Free memory was 85.8 MB in the beginning and 176.0 MB in the end (delta: -90.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. [2020-09-25 11:10:57,212 INFO L168 Benchmark]: RCFGBuilder took 524.89 ms. Allocated memory is still 198.2 MB. Free memory was 176.0 MB in the beginning and 151.1 MB in the end (delta: 24.9 MB). Peak memory consumption was 24.9 MB. Max. memory is 7.1 GB. [2020-09-25 11:10:57,212 INFO L168 Benchmark]: TraceAbstraction took 10854.28 ms. Allocated memory was 198.2 MB in the beginning and 757.6 MB in the end (delta: 559.4 MB). Free memory was 150.4 MB in the beginning and 384.9 MB in the end (delta: -234.5 MB). Peak memory consumption was 325.0 MB. Max. memory is 7.1 GB. [2020-09-25 11:10:57,220 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 135.8 MB. Free memory was 116.0 MB in the beginning and 115.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 350.24 ms. Allocated memory is still 135.8 MB. Free memory was 97.0 MB in the beginning and 85.8 MB in the end (delta: 11.2 MB). Peak memory consumption was 11.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 146.91 ms. Allocated memory was 135.8 MB in the beginning and 198.2 MB in the end (delta: 62.4 MB). Free memory was 85.8 MB in the beginning and 176.0 MB in the end (delta: -90.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 524.89 ms. Allocated memory is still 198.2 MB. Free memory was 176.0 MB in the beginning and 151.1 MB in the end (delta: 24.9 MB). Peak memory consumption was 24.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 10854.28 ms. Allocated memory was 198.2 MB in the beginning and 757.6 MB in the end (delta: 559.4 MB). Free memory was 150.4 MB in the beginning and 384.9 MB in the end (delta: -234.5 MB). Peak memory consumption was 325.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 161]: 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: 39]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 118 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 10.6s, OverallIterations: 20, TraceHistogramMax: 1, AutomataDifference: 2.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 3610 SDtfs, 1318 SDslu, 2579 SDs, 0 SdLazy, 99 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 100 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26415occurred in iteration=17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 4.3s AutomataMinimizationTime, 20 MinimizatonAttempts, 10599 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 1033 NumberOfFragments, 7 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 1560 NumberOfCodeBlocks, 1560 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 1540 ConstructedInterpolants, 0 QuantifiedInterpolants, 151100 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 20 InterpolantComputations, 20 PerfectInterpolantSequences, 0/0 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...