/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 interpolation-heuristic=FIRST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/test25-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 16:01:28,694 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 16:01:28,698 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 16:01:28,731 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 16:01:28,732 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 16:01:28,733 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 16:01:28,736 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 16:01:28,745 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 16:01:28,747 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 16:01:28,748 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 16:01:28,749 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 16:01:28,751 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 16:01:28,753 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 16:01:28,754 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 16:01:28,758 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 16:01:28,760 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 16:01:28,761 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 16:01:28,762 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 16:01:28,767 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 16:01:28,773 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 16:01:28,777 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 16:01:28,779 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 16:01:28,780 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 16:01:28,781 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 16:01:28,786 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 16:01:28,787 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 16:01:28,787 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 16:01:28,790 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 16:01:28,791 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 16:01:28,802 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 16:01:28,803 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 16:01:28,805 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 16:01:28,806 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 16:01:28,807 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 16:01:28,808 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 16:01:28,808 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 16:01:28,809 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 16:01:28,809 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 16:01:28,810 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 16:01:28,811 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 16:01:28,813 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 16:01:28,814 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 [2020-09-24 16:01:28,860 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 16:01:28,861 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 16:01:28,862 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 16:01:28,862 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 16:01:28,862 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 16:01:28,862 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 16:01:28,865 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 16:01:28,865 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 16:01:28,865 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 16:01:28,865 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 16:01:28,865 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 16:01:28,866 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 16:01:28,866 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 16:01:28,866 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 16:01:28,866 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 16:01:28,866 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 16:01:28,867 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 16:01:28,867 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 16:01:28,867 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 16:01:28,867 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 16:01:28,867 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 16:01:28,868 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 16:01:28,868 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 16:01:28,868 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 16:01:28,868 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 16:01:28,868 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 16:01:28,869 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 16:01:28,869 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 16:01:28,869 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 16:01:28,869 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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;log-additional-information=true; [2020-09-24 16:01:29,358 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 16:01:29,381 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 16:01:29,386 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 16:01:29,388 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 16:01:29,389 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 16:01:29,390 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test25-2.c [2020-09-24 16:01:29,474 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bd1c9eb23/d9d65251d16e455bbfaab81217e8ef10/FLAGa9d24c253 [2020-09-24 16:01:29,996 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 16:01:29,997 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/test25-2.c [2020-09-24 16:01:30,005 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bd1c9eb23/d9d65251d16e455bbfaab81217e8ef10/FLAGa9d24c253 [2020-09-24 16:01:30,337 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bd1c9eb23/d9d65251d16e455bbfaab81217e8ef10 [2020-09-24 16:01:30,351 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 16:01:30,358 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 16:01:30,359 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 16:01:30,359 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 16:01:30,364 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 16:01:30,365 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:01:30" (1/1) ... [2020-09-24 16:01:30,370 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c6320c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:01:30, skipping insertion in model container [2020-09-24 16:01:30,370 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:01:30" (1/1) ... [2020-09-24 16:01:30,380 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 16:01:30,410 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 16:01:30,671 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 16:01:30,681 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 16:01:30,704 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 16:01:30,803 INFO L208 MainTranslator]: Completed translation [2020-09-24 16:01:30,805 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:01:30 WrapperNode [2020-09-24 16:01:30,805 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 16:01:30,806 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 16:01:30,806 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 16:01:30,806 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 16:01:30,821 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:01:30" (1/1) ... [2020-09-24 16:01:30,821 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:01:30" (1/1) ... [2020-09-24 16:01:30,834 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:01:30" (1/1) ... [2020-09-24 16:01:30,835 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:01:30" (1/1) ... [2020-09-24 16:01:30,846 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:01:30" (1/1) ... [2020-09-24 16:01:30,853 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:01:30" (1/1) ... [2020-09-24 16:01:30,855 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:01:30" (1/1) ... [2020-09-24 16:01:30,858 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 16:01:30,858 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 16:01:30,858 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 16:01:30,858 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 16:01:30,862 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:01:30" (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 [2020-09-24 16:01:30,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 16:01:30,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 16:01:30,941 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-09-24 16:01:30,941 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 16:01:30,941 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 16:01:30,942 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 16:01:30,942 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-09-24 16:01:30,943 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 16:01:30,944 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 16:01:30,944 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 16:01:30,944 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 16:01:30,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 16:01:30,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 16:01:30,945 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 16:01:30,945 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 16:01:30,946 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 16:01:31,372 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 16:01:31,372 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-24 16:01:31,377 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:01:31 BoogieIcfgContainer [2020-09-24 16:01:31,378 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 16:01:31,379 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 16:01:31,379 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 16:01:31,383 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 16:01:31,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 04:01:30" (1/3) ... [2020-09-24 16:01:31,384 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e5af02e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:01:31, skipping insertion in model container [2020-09-24 16:01:31,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:01:30" (2/3) ... [2020-09-24 16:01:31,385 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e5af02e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:01:31, skipping insertion in model container [2020-09-24 16:01:31,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:01:31" (3/3) ... [2020-09-24 16:01:31,388 INFO L109 eAbstractionObserver]: Analyzing ICFG test25-2.c [2020-09-24 16:01:31,399 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 16:01:31,410 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 16:01:31,431 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 16:01:31,463 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 16:01:31,463 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 16:01:31,463 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 16:01:31,463 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 16:01:31,463 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 16:01:31,463 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 16:01:31,464 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 16:01:31,464 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 16:01:31,485 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states. [2020-09-24 16:01:31,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-09-24 16:01:31,493 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:01:31,495 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] [2020-09-24 16:01:31,495 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:01:31,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:01:31,502 INFO L82 PathProgramCache]: Analyzing trace with hash 144198137, now seen corresponding path program 1 times [2020-09-24 16:01:31,512 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:01:31,512 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [341674860] [2020-09-24 16:01:31,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:01:31,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:31,678 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:31,678 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:31,679 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:31,679 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:31,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-24 16:01:31,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:31,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 16:01:31,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:31,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:01:31,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-24 16:01:31,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:01:31,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:31,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:01:31,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:31,771 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:31,772 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:31,772 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:31,772 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:31,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:01:31,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:31,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:01:31,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:31,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:01:31,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:01:31,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:01:31,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:01:31,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 16:01:31,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:31,796 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:31,796 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:31,796 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:31,797 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:31,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 16:01:31,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:31,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:01:31,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:31,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:01:31,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 16:01:31,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:01:31,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:01:31,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:01:31,820 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [341674860] [2020-09-24 16:01:31,823 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:01:31,823 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 16:01:31,824 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588343682] [2020-09-24 16:01:31,831 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 16:01:31,832 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:01:31,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 16:01:31,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:01:31,854 INFO L87 Difference]: Start difference. First operand 77 states. Second operand 3 states. [2020-09-24 16:01:32,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:01:32,060 INFO L93 Difference]: Finished difference Result 124 states and 134 transitions. [2020-09-24 16:01:32,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 16:01:32,063 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 44 [2020-09-24 16:01:32,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:01:32,076 INFO L225 Difference]: With dead ends: 124 [2020-09-24 16:01:32,077 INFO L226 Difference]: Without dead ends: 60 [2020-09-24 16:01:32,082 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:01:32,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-09-24 16:01:32,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2020-09-24 16:01:32,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-09-24 16:01:32,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 61 transitions. [2020-09-24 16:01:32,142 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 61 transitions. Word has length 44 [2020-09-24 16:01:32,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:01:32,143 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 61 transitions. [2020-09-24 16:01:32,143 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 16:01:32,143 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 61 transitions. [2020-09-24 16:01:32,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-24 16:01:32,145 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:01:32,145 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] [2020-09-24 16:01:32,146 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 16:01:32,146 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:01:32,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:01:32,147 INFO L82 PathProgramCache]: Analyzing trace with hash 608042528, now seen corresponding path program 1 times [2020-09-24 16:01:32,147 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:01:32,148 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1916732767] [2020-09-24 16:01:32,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:01:32,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:32,195 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:32,195 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:32,195 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:32,196 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:32,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 16:01:32,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:32,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 16:01:32,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:32,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:01:32,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-24 16:01:32,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-24 16:01:32,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:01:32,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:01:32,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:32,262 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:32,263 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:32,264 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:32,264 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:32,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:01:32,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:32,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 16:01:32,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:32,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:01:32,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:01:32,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:01:32,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:01:32,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-09-24 16:01:32,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:32,280 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:32,281 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:32,281 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:32,281 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:32,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 16:01:32,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:32,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:01:32,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:32,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:01:32,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 16:01:32,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:01:32,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:01:32,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:01:32,296 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1916732767] [2020-09-24 16:01:32,296 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:01:32,296 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 16:01:32,297 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212524300] [2020-09-24 16:01:32,299 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 16:01:32,299 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:01:32,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 16:01:32,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 16:01:32,300 INFO L87 Difference]: Start difference. First operand 60 states and 61 transitions. Second operand 4 states. [2020-09-24 16:01:32,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:01:32,472 INFO L93 Difference]: Finished difference Result 104 states and 106 transitions. [2020-09-24 16:01:32,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 16:01:32,473 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2020-09-24 16:01:32,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:01:32,475 INFO L225 Difference]: With dead ends: 104 [2020-09-24 16:01:32,475 INFO L226 Difference]: Without dead ends: 69 [2020-09-24 16:01:32,476 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 16:01:32,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-09-24 16:01:32,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 61. [2020-09-24 16:01:32,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-09-24 16:01:32,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 62 transitions. [2020-09-24 16:01:32,487 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 62 transitions. Word has length 46 [2020-09-24 16:01:32,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:01:32,488 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 62 transitions. [2020-09-24 16:01:32,488 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 16:01:32,488 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 62 transitions. [2020-09-24 16:01:32,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-24 16:01:32,490 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:01:32,490 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] [2020-09-24 16:01:32,491 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 16:01:32,491 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:01:32,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:01:32,491 INFO L82 PathProgramCache]: Analyzing trace with hash 1644606330, now seen corresponding path program 1 times [2020-09-24 16:01:32,492 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:01:32,492 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [350194920] [2020-09-24 16:01:32,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:01:32,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:32,539 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:32,540 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:32,540 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:32,540 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:32,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-24 16:01:32,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:32,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 16:01:32,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:32,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 16:01:32,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-24 16:01:32,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 16:01:32,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:32,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:01:32,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:32,619 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:32,620 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:32,620 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:32,620 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:32,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:01:32,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:32,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:01:32,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:32,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:01:32,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:01:32,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:01:32,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:01:32,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-24 16:01:32,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:32,633 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:32,633 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:32,633 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:32,634 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:32,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 16:01:32,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:32,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:01:32,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:32,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:01:32,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 16:01:32,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:01:32,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:32,648 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:01:32,649 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [350194920] [2020-09-24 16:01:32,650 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 16:01:32,650 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-24 16:01:32,650 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783318126] [2020-09-24 16:01:32,651 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 16:01:32,651 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:01:32,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 16:01:32,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-24 16:01:32,654 INFO L87 Difference]: Start difference. First operand 61 states and 62 transitions. Second operand 6 states. [2020-09-24 16:01:32,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:01:32,864 INFO L93 Difference]: Finished difference Result 114 states and 116 transitions. [2020-09-24 16:01:32,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 16:01:32,865 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 56 [2020-09-24 16:01:32,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:01:32,867 INFO L225 Difference]: With dead ends: 114 [2020-09-24 16:01:32,867 INFO L226 Difference]: Without dead ends: 79 [2020-09-24 16:01:32,868 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-24 16:01:32,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-09-24 16:01:32,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 71. [2020-09-24 16:01:32,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-09-24 16:01:32,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 72 transitions. [2020-09-24 16:01:32,880 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 72 transitions. Word has length 56 [2020-09-24 16:01:32,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:01:32,880 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 72 transitions. [2020-09-24 16:01:32,881 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 16:01:32,881 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 72 transitions. [2020-09-24 16:01:32,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-09-24 16:01:32,883 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:01:32,883 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:01:32,883 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 16:01:32,884 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:01:32,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:01:32,884 INFO L82 PathProgramCache]: Analyzing trace with hash 278397012, now seen corresponding path program 2 times [2020-09-24 16:01:32,884 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:01:32,885 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1685672133] [2020-09-24 16:01:32,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:01:32,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:32,943 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:32,944 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:32,944 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:32,944 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:32,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-24 16:01:32,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:32,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 16:01:32,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:32,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 16:01:32,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-24 16:01:32,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-24 16:01:32,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:33,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:01:33,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:33,048 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:33,048 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:33,048 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:33,049 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:33,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:01:33,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:33,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:01:33,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:33,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:01:33,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:01:33,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:01:33,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:33,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-24 16:01:33,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:33,058 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:33,059 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:33,059 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:33,059 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:33,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 16:01:33,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:33,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:01:33,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:33,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:01:33,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 16:01:33,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:01:33,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:33,070 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:01:33,071 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1685672133] [2020-09-24 16:01:33,071 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 16:01:33,071 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 16:01:33,071 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813364498] [2020-09-24 16:01:33,072 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 16:01:33,072 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:01:33,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 16:01:33,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 16:01:33,073 INFO L87 Difference]: Start difference. First operand 71 states and 72 transitions. Second operand 8 states. [2020-09-24 16:01:33,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:01:33,284 INFO L93 Difference]: Finished difference Result 124 states and 126 transitions. [2020-09-24 16:01:33,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 16:01:33,284 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 66 [2020-09-24 16:01:33,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:01:33,286 INFO L225 Difference]: With dead ends: 124 [2020-09-24 16:01:33,286 INFO L226 Difference]: Without dead ends: 89 [2020-09-24 16:01:33,287 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-09-24 16:01:33,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-09-24 16:01:33,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 81. [2020-09-24 16:01:33,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-09-24 16:01:33,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 82 transitions. [2020-09-24 16:01:33,297 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 82 transitions. Word has length 66 [2020-09-24 16:01:33,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:01:33,297 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 82 transitions. [2020-09-24 16:01:33,297 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 16:01:33,298 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 82 transitions. [2020-09-24 16:01:33,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-09-24 16:01:33,299 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:01:33,299 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:01:33,300 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 16:01:33,300 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:01:33,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:01:33,300 INFO L82 PathProgramCache]: Analyzing trace with hash 767198382, now seen corresponding path program 3 times [2020-09-24 16:01:33,301 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:01:33,301 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1764472103] [2020-09-24 16:01:33,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:01:33,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:33,387 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:33,387 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:33,388 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:33,388 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:33,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 16:01:33,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:33,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-24 16:01:33,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:33,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 16:01:33,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-24 16:01:33,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-24 16:01:33,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:01:33,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:01:33,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:33,557 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:33,558 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:33,558 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:33,558 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:33,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:01:33,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:33,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:01:33,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:33,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:01:33,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:01:33,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:01:33,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 16:01:33,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-09-24 16:01:33,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:33,573 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:33,573 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:33,574 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:33,574 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:33,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 16:01:33,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:33,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:01:33,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:33,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:01:33,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 16:01:33,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:01:33,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 16:01:33,606 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:01:33,607 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1764472103] [2020-09-24 16:01:33,607 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 16:01:33,607 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-24 16:01:33,607 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134432160] [2020-09-24 16:01:33,609 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 16:01:33,609 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:01:33,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 16:01:33,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-09-24 16:01:33,611 INFO L87 Difference]: Start difference. First operand 81 states and 82 transitions. Second operand 10 states. [2020-09-24 16:01:33,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:01:33,836 INFO L93 Difference]: Finished difference Result 134 states and 136 transitions. [2020-09-24 16:01:33,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-24 16:01:33,836 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 76 [2020-09-24 16:01:33,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:01:33,838 INFO L225 Difference]: With dead ends: 134 [2020-09-24 16:01:33,838 INFO L226 Difference]: Without dead ends: 99 [2020-09-24 16:01:33,839 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2020-09-24 16:01:33,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-09-24 16:01:33,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 91. [2020-09-24 16:01:33,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-09-24 16:01:33,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 92 transitions. [2020-09-24 16:01:33,847 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 92 transitions. Word has length 76 [2020-09-24 16:01:33,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:01:33,847 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 92 transitions. [2020-09-24 16:01:33,848 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 16:01:33,848 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 92 transitions. [2020-09-24 16:01:33,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-09-24 16:01:33,849 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:01:33,850 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:01:33,850 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 16:01:33,850 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:01:33,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:01:33,850 INFO L82 PathProgramCache]: Analyzing trace with hash 216981640, now seen corresponding path program 4 times [2020-09-24 16:01:33,851 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:01:33,851 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1424340188] [2020-09-24 16:01:33,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:01:33,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:33,914 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:33,915 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:33,915 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:33,915 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:33,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-09-24 16:01:33,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:33,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-24 16:01:33,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:33,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 16:01:33,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-24 16:01:33,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 16:01:33,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:34,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:01:34,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:34,068 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:34,068 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:34,069 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:34,069 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:34,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:01:34,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:34,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:01:34,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:34,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:01:34,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:01:34,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:01:34,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:34,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-09-24 16:01:34,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:34,075 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:34,076 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:34,076 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:34,076 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:34,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 16:01:34,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:34,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:01:34,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:34,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:01:34,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 16:01:34,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:01:34,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:34,087 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:01:34,088 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1424340188] [2020-09-24 16:01:34,088 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 16:01:34,088 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-24 16:01:34,088 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331592634] [2020-09-24 16:01:34,089 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-24 16:01:34,089 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:01:34,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-24 16:01:34,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-24 16:01:34,090 INFO L87 Difference]: Start difference. First operand 91 states and 92 transitions. Second operand 12 states. [2020-09-24 16:01:34,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:01:34,356 INFO L93 Difference]: Finished difference Result 144 states and 146 transitions. [2020-09-24 16:01:34,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-24 16:01:34,357 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 86 [2020-09-24 16:01:34,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:01:34,358 INFO L225 Difference]: With dead ends: 144 [2020-09-24 16:01:34,358 INFO L226 Difference]: Without dead ends: 109 [2020-09-24 16:01:34,359 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=125, Invalid=255, Unknown=0, NotChecked=0, Total=380 [2020-09-24 16:01:34,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-09-24 16:01:34,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 101. [2020-09-24 16:01:34,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-09-24 16:01:34,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 102 transitions. [2020-09-24 16:01:34,372 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 102 transitions. Word has length 86 [2020-09-24 16:01:34,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:01:34,374 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 102 transitions. [2020-09-24 16:01:34,374 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-24 16:01:34,374 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 102 transitions. [2020-09-24 16:01:34,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-09-24 16:01:34,379 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:01:34,379 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:01:34,379 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 16:01:34,380 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:01:34,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:01:34,380 INFO L82 PathProgramCache]: Analyzing trace with hash -1855081502, now seen corresponding path program 5 times [2020-09-24 16:01:34,380 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:01:34,385 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [88894073] [2020-09-24 16:01:34,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:01:34,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:34,498 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:34,498 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:34,498 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:34,498 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:34,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-09-24 16:01:34,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:34,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-24 16:01:34,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:34,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 16:01:34,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-24 16:01:34,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-24 16:01:34,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:34,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:01:34,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:34,696 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:34,696 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:34,696 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:34,697 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:34,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:01:34,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:34,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:01:34,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:34,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:01:34,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:01:34,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:01:34,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:34,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-09-24 16:01:34,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:34,703 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:34,703 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:34,704 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:34,704 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:34,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 16:01:34,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:34,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:01:34,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:34,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:01:34,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 16:01:34,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:01:34,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:34,715 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:01:34,716 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [88894073] [2020-09-24 16:01:34,716 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 16:01:34,716 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-24 16:01:34,716 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934273008] [2020-09-24 16:01:34,717 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-24 16:01:34,717 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:01:34,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-24 16:01:34,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2020-09-24 16:01:34,718 INFO L87 Difference]: Start difference. First operand 101 states and 102 transitions. Second operand 14 states. [2020-09-24 16:01:35,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:01:35,027 INFO L93 Difference]: Finished difference Result 154 states and 156 transitions. [2020-09-24 16:01:35,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-24 16:01:35,028 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 96 [2020-09-24 16:01:35,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:01:35,029 INFO L225 Difference]: With dead ends: 154 [2020-09-24 16:01:35,029 INFO L226 Difference]: Without dead ends: 119 [2020-09-24 16:01:35,030 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=180, Invalid=372, Unknown=0, NotChecked=0, Total=552 [2020-09-24 16:01:35,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-09-24 16:01:35,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 111. [2020-09-24 16:01:35,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-09-24 16:01:35,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 112 transitions. [2020-09-24 16:01:35,038 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 112 transitions. Word has length 96 [2020-09-24 16:01:35,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:01:35,038 INFO L479 AbstractCegarLoop]: Abstraction has 111 states and 112 transitions. [2020-09-24 16:01:35,039 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-24 16:01:35,039 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 112 transitions. [2020-09-24 16:01:35,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-09-24 16:01:35,040 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:01:35,040 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:01:35,040 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 16:01:35,040 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:01:35,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:01:35,041 INFO L82 PathProgramCache]: Analyzing trace with hash -400056644, now seen corresponding path program 6 times [2020-09-24 16:01:35,041 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:01:35,041 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1239324078] [2020-09-24 16:01:35,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:01:35,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:35,116 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:35,117 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:35,118 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:35,118 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:35,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-09-24 16:01:35,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:35,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-24 16:01:35,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:35,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-24 16:01:35,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-24 16:01:35,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-24 16:01:35,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:01:35,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:01:35,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:35,316 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:35,316 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:35,316 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:35,317 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:35,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:01:35,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:35,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:01:35,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:35,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:01:35,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:01:35,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:01:35,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:01:35,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-09-24 16:01:35,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:35,324 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:35,325 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:35,325 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:35,325 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:35,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 16:01:35,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:35,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:01:35,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:35,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:01:35,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 16:01:35,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:01:35,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:35,341 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:01:35,341 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1239324078] [2020-09-24 16:01:35,342 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 16:01:35,342 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-24 16:01:35,342 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637224455] [2020-09-24 16:01:35,343 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-24 16:01:35,343 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:01:35,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-24 16:01:35,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-09-24 16:01:35,344 INFO L87 Difference]: Start difference. First operand 111 states and 112 transitions. Second operand 16 states. [2020-09-24 16:01:35,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:01:35,750 INFO L93 Difference]: Finished difference Result 164 states and 166 transitions. [2020-09-24 16:01:35,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-09-24 16:01:35,751 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 106 [2020-09-24 16:01:35,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:01:35,752 INFO L225 Difference]: With dead ends: 164 [2020-09-24 16:01:35,752 INFO L226 Difference]: Without dead ends: 129 [2020-09-24 16:01:35,753 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=245, Invalid=511, Unknown=0, NotChecked=0, Total=756 [2020-09-24 16:01:35,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-09-24 16:01:35,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 121. [2020-09-24 16:01:35,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-09-24 16:01:35,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 122 transitions. [2020-09-24 16:01:35,771 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 122 transitions. Word has length 106 [2020-09-24 16:01:35,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:01:35,771 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 122 transitions. [2020-09-24 16:01:35,771 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-24 16:01:35,771 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 122 transitions. [2020-09-24 16:01:35,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-09-24 16:01:35,773 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:01:35,773 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:01:35,773 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 16:01:35,774 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:01:35,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:01:35,774 INFO L82 PathProgramCache]: Analyzing trace with hash -1044037354, now seen corresponding path program 7 times [2020-09-24 16:01:35,774 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:01:35,775 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1719637260] [2020-09-24 16:01:35,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:01:35,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:35,885 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:35,885 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:35,885 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:35,886 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:35,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-09-24 16:01:35,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:35,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-09-24 16:01:35,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:35,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 16:01:35,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-24 16:01:35,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-24 16:01:35,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:36,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:01:36,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:36,157 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:36,157 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:36,157 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:36,158 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:36,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:01:36,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:36,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:01:36,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:36,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:01:36,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:01:36,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:01:36,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:36,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-09-24 16:01:36,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:36,164 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:36,164 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:36,165 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:36,165 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:36,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 16:01:36,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:36,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:01:36,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:36,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:01:36,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 16:01:36,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:01:36,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:36,181 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 0 proven. 217 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:01:36,182 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1719637260] [2020-09-24 16:01:36,182 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 16:01:36,182 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-09-24 16:01:36,182 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764712480] [2020-09-24 16:01:36,183 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-24 16:01:36,183 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:01:36,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-24 16:01:36,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2020-09-24 16:01:36,184 INFO L87 Difference]: Start difference. First operand 121 states and 122 transitions. Second operand 18 states. [2020-09-24 16:01:36,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:01:36,727 INFO L93 Difference]: Finished difference Result 174 states and 176 transitions. [2020-09-24 16:01:36,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-09-24 16:01:36,728 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 116 [2020-09-24 16:01:36,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:01:36,730 INFO L225 Difference]: With dead ends: 174 [2020-09-24 16:01:36,730 INFO L226 Difference]: Without dead ends: 139 [2020-09-24 16:01:36,732 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=320, Invalid=672, Unknown=0, NotChecked=0, Total=992 [2020-09-24 16:01:36,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-09-24 16:01:36,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 131. [2020-09-24 16:01:36,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-09-24 16:01:36,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 132 transitions. [2020-09-24 16:01:36,747 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 132 transitions. Word has length 116 [2020-09-24 16:01:36,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:01:36,748 INFO L479 AbstractCegarLoop]: Abstraction has 131 states and 132 transitions. [2020-09-24 16:01:36,748 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-24 16:01:36,748 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 132 transitions. [2020-09-24 16:01:36,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-09-24 16:01:36,751 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:01:36,751 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:01:36,752 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 16:01:36,752 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:01:36,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:01:36,752 INFO L82 PathProgramCache]: Analyzing trace with hash 212286192, now seen corresponding path program 8 times [2020-09-24 16:01:36,753 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:01:36,755 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [593532790] [2020-09-24 16:01:36,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:01:36,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:36,885 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:36,886 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:36,886 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:36,886 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:36,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-09-24 16:01:36,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:36,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-09-24 16:01:36,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:36,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-24 16:01:36,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-24 16:01:36,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-09-24 16:01:36,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:37,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:01:37,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:37,203 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:37,203 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:37,205 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:37,205 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:37,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:01:37,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:37,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 16:01:37,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:37,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:01:37,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:01:37,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:01:37,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:01:37,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-09-24 16:01:37,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:37,214 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:37,215 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:37,215 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:37,215 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:37,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 16:01:37,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:37,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:01:37,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:37,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:01:37,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 16:01:37,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:01:37,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:01:37,238 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:01:37,239 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [593532790] [2020-09-24 16:01:37,240 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 16:01:37,240 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-09-24 16:01:37,240 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137848142] [2020-09-24 16:01:37,241 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-24 16:01:37,241 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:01:37,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-24 16:01:37,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2020-09-24 16:01:37,243 INFO L87 Difference]: Start difference. First operand 131 states and 132 transitions. Second operand 20 states. [2020-09-24 16:01:37,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:01:37,909 INFO L93 Difference]: Finished difference Result 184 states and 186 transitions. [2020-09-24 16:01:37,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-09-24 16:01:37,910 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 126 [2020-09-24 16:01:37,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:01:37,912 INFO L225 Difference]: With dead ends: 184 [2020-09-24 16:01:37,912 INFO L226 Difference]: Without dead ends: 149 [2020-09-24 16:01:37,916 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=405, Invalid=855, Unknown=0, NotChecked=0, Total=1260 [2020-09-24 16:01:37,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-09-24 16:01:37,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 141. [2020-09-24 16:01:37,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-09-24 16:01:37,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 142 transitions. [2020-09-24 16:01:37,926 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 142 transitions. Word has length 126 [2020-09-24 16:01:37,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:01:37,926 INFO L479 AbstractCegarLoop]: Abstraction has 141 states and 142 transitions. [2020-09-24 16:01:37,926 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-24 16:01:37,927 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 142 transitions. [2020-09-24 16:01:37,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-09-24 16:01:37,930 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:01:37,930 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:01:37,930 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 16:01:37,931 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:01:37,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:01:37,931 INFO L82 PathProgramCache]: Analyzing trace with hash 786836554, now seen corresponding path program 9 times [2020-09-24 16:01:37,932 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:01:37,932 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [621947984] [2020-09-24 16:01:37,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:01:37,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:38,110 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:38,110 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:38,110 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:38,111 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:38,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-09-24 16:01:38,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:38,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-09-24 16:01:38,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:38,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-24 16:01:38,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-24 16:01:38,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-09-24 16:01:38,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 16:01:38,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:01:38,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:38,585 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:38,585 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:38,586 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:38,586 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:38,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:01:38,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:38,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:01:38,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:38,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:01:38,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:01:38,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:01:38,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:38,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-09-24 16:01:38,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:38,592 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:38,592 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:38,592 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:38,593 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:38,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 16:01:38,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:38,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:01:38,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:38,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:01:38,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 16:01:38,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:01:38,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:38,618 INFO L134 CoverageAnalysis]: Checked inductivity of 369 backedges. 0 proven. 369 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:01:38,618 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [621947984] [2020-09-24 16:01:38,618 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 16:01:38,619 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-09-24 16:01:38,619 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458729716] [2020-09-24 16:01:38,620 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-09-24 16:01:38,620 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:01:38,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-09-24 16:01:38,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=340, Unknown=0, NotChecked=0, Total=462 [2020-09-24 16:01:38,621 INFO L87 Difference]: Start difference. First operand 141 states and 142 transitions. Second operand 22 states. [2020-09-24 16:01:39,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:01:39,302 INFO L93 Difference]: Finished difference Result 186 states and 188 transitions. [2020-09-24 16:01:39,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-09-24 16:01:39,303 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 136 [2020-09-24 16:01:39,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:01:39,305 INFO L225 Difference]: With dead ends: 186 [2020-09-24 16:01:39,305 INFO L226 Difference]: Without dead ends: 151 [2020-09-24 16:01:39,307 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=500, Invalid=1060, Unknown=0, NotChecked=0, Total=1560 [2020-09-24 16:01:39,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-09-24 16:01:39,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2020-09-24 16:01:39,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-09-24 16:01:39,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 152 transitions. [2020-09-24 16:01:39,313 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 152 transitions. Word has length 136 [2020-09-24 16:01:39,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:01:39,313 INFO L479 AbstractCegarLoop]: Abstraction has 151 states and 152 transitions. [2020-09-24 16:01:39,314 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-09-24 16:01:39,314 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 152 transitions. [2020-09-24 16:01:39,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-09-24 16:01:39,315 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:01:39,315 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:01:39,316 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-24 16:01:39,316 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:01:39,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:01:39,316 INFO L82 PathProgramCache]: Analyzing trace with hash -1068321500, now seen corresponding path program 10 times [2020-09-24 16:01:39,317 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:01:39,317 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [764700469] [2020-09-24 16:01:39,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:01:39,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:39,622 FATAL L256 erpolLogProxyWrapper]: Difference in size: 23 [2020-09-24 16:01:39,623 FATAL L256 erpolLogProxyWrapper]: Difference in depth: -109 [2020-09-24 16:01:39,623 FATAL L256 erpolLogProxyWrapper]: Difference in width: 109 [2020-09-24 16:01:39,623 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:39,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-09-24 16:01:39,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:39,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-24 16:01:39,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:39,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 16:01:39,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 124 [2020-09-24 16:01:39,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 16:01:39,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:01:39,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:01:39,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:39,804 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:39,805 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:39,805 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:39,805 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:39,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:01:39,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:39,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:01:39,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:39,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:01:39,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:01:39,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:01:39,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:39,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-09-24 16:01:39,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:39,813 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:39,814 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:39,814 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:39,814 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:39,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 16:01:39,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:39,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:01:39,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:39,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:01:39,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 16:01:39,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:01:39,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:01:39,840 INFO L134 CoverageAnalysis]: Checked inductivity of 460 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 460 trivial. 0 not checked. [2020-09-24 16:01:39,841 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [764700469] [2020-09-24 16:01:39,841 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:01:39,842 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-24 16:01:39,842 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40985957] [2020-09-24 16:01:39,843 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 16:01:39,843 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:01:39,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 16:01:39,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-09-24 16:01:39,844 INFO L87 Difference]: Start difference. First operand 151 states and 152 transitions. Second operand 9 states. [2020-09-24 16:01:40,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:01:40,129 INFO L93 Difference]: Finished difference Result 172 states and 173 transitions. [2020-09-24 16:01:40,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 16:01:40,130 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 146 [2020-09-24 16:01:40,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:01:40,131 INFO L225 Difference]: With dead ends: 172 [2020-09-24 16:01:40,132 INFO L226 Difference]: Without dead ends: 156 [2020-09-24 16:01:40,132 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2020-09-24 16:01:40,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-09-24 16:01:40,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 153. [2020-09-24 16:01:40,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-09-24 16:01:40,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 154 transitions. [2020-09-24 16:01:40,138 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 154 transitions. Word has length 146 [2020-09-24 16:01:40,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:01:40,139 INFO L479 AbstractCegarLoop]: Abstraction has 153 states and 154 transitions. [2020-09-24 16:01:40,140 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 16:01:40,140 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 154 transitions. [2020-09-24 16:01:40,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-09-24 16:01:40,141 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:01:40,141 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:01:40,142 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-24 16:01:40,142 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:01:40,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:01:40,142 INFO L82 PathProgramCache]: Analyzing trace with hash 1165083452, now seen corresponding path program 1 times [2020-09-24 16:01:40,143 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:01:40,143 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1102363216] [2020-09-24 16:01:40,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:01:40,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:40,486 FATAL L256 erpolLogProxyWrapper]: Difference in size: 33 [2020-09-24 16:01:40,486 FATAL L256 erpolLogProxyWrapper]: Difference in depth: -109 [2020-09-24 16:01:40,486 FATAL L256 erpolLogProxyWrapper]: Difference in width: 124 [2020-09-24 16:01:40,486 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:40,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-09-24 16:01:40,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:40,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-24 16:01:40,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:40,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 16:01:40,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 124 [2020-09-24 16:01:40,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 16:01:40,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:40,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:01:40,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:40,622 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:40,622 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:40,622 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:40,623 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:40,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:01:40,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:40,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:01:40,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:40,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:01:40,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:01:40,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:01:40,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:40,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-09-24 16:01:40,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:40,629 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:40,629 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:40,629 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:40,630 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:40,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 16:01:40,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:40,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:01:40,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:40,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:01:40,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 16:01:40,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:01:40,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:40,652 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 460 trivial. 0 not checked. [2020-09-24 16:01:40,652 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1102363216] [2020-09-24 16:01:40,653 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 16:01:40,653 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-24 16:01:40,653 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954007144] [2020-09-24 16:01:40,653 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 16:01:40,654 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:01:40,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 16:01:40,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-09-24 16:01:40,655 INFO L87 Difference]: Start difference. First operand 153 states and 154 transitions. Second operand 10 states. [2020-09-24 16:01:40,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:01:40,986 INFO L93 Difference]: Finished difference Result 178 states and 179 transitions. [2020-09-24 16:01:40,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-24 16:01:40,987 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 152 [2020-09-24 16:01:40,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:01:40,988 INFO L225 Difference]: With dead ends: 178 [2020-09-24 16:01:40,988 INFO L226 Difference]: Without dead ends: 162 [2020-09-24 16:01:40,989 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2020-09-24 16:01:40,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-09-24 16:01:40,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 159. [2020-09-24 16:01:40,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-09-24 16:01:40,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 160 transitions. [2020-09-24 16:01:40,998 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 160 transitions. Word has length 152 [2020-09-24 16:01:40,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:01:41,000 INFO L479 AbstractCegarLoop]: Abstraction has 159 states and 160 transitions. [2020-09-24 16:01:41,001 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 16:01:41,001 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 160 transitions. [2020-09-24 16:01:41,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-09-24 16:01:41,002 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:01:41,002 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:01:41,003 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-24 16:01:41,003 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:01:41,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:01:41,004 INFO L82 PathProgramCache]: Analyzing trace with hash -1004282028, now seen corresponding path program 2 times [2020-09-24 16:01:41,004 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:01:41,007 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [387993606] [2020-09-24 16:01:41,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:01:41,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:41,335 FATAL L256 erpolLogProxyWrapper]: Difference in size: 24 [2020-09-24 16:01:41,335 FATAL L256 erpolLogProxyWrapper]: Difference in depth: -109 [2020-09-24 16:01:41,335 FATAL L256 erpolLogProxyWrapper]: Difference in width: 109 [2020-09-24 16:01:41,336 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:41,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-09-24 16:01:41,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:41,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-24 16:01:41,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:41,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 16:01:41,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 124 [2020-09-24 16:01:41,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-24 16:01:41,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:41,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:01:41,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:41,533 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:41,533 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:41,533 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:41,534 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:41,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:01:41,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:41,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:01:41,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:41,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:01:41,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:01:41,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:01:41,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:41,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-09-24 16:01:41,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:41,541 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:41,541 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:41,542 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:41,542 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:41,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 16:01:41,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:41,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:01:41,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:41,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:01:41,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 16:01:41,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:01:41,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:01:41,576 INFO L134 CoverageAnalysis]: Checked inductivity of 470 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 460 trivial. 0 not checked. [2020-09-24 16:01:41,577 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [387993606] [2020-09-24 16:01:41,577 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 16:01:41,577 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-24 16:01:41,577 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651462761] [2020-09-24 16:01:41,578 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 16:01:41,578 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:01:41,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 16:01:41,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-24 16:01:41,579 INFO L87 Difference]: Start difference. First operand 159 states and 160 transitions. Second operand 11 states. [2020-09-24 16:01:41,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:01:41,964 INFO L93 Difference]: Finished difference Result 184 states and 185 transitions. [2020-09-24 16:01:41,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-24 16:01:41,966 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 158 [2020-09-24 16:01:41,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:01:41,968 INFO L225 Difference]: With dead ends: 184 [2020-09-24 16:01:41,968 INFO L226 Difference]: Without dead ends: 168 [2020-09-24 16:01:41,969 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2020-09-24 16:01:41,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-09-24 16:01:41,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 165. [2020-09-24 16:01:41,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-09-24 16:01:41,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 166 transitions. [2020-09-24 16:01:41,977 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 166 transitions. Word has length 158 [2020-09-24 16:01:41,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:01:41,978 INFO L479 AbstractCegarLoop]: Abstraction has 165 states and 166 transitions. [2020-09-24 16:01:41,978 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 16:01:41,978 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 166 transitions. [2020-09-24 16:01:41,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-09-24 16:01:41,979 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:01:41,980 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:01:41,980 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-24 16:01:41,980 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:01:41,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:01:41,981 INFO L82 PathProgramCache]: Analyzing trace with hash 426150252, now seen corresponding path program 3 times [2020-09-24 16:01:41,981 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:01:41,982 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [943295237] [2020-09-24 16:01:41,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:01:42,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:42,338 FATAL L256 erpolLogProxyWrapper]: Difference in size: 34 [2020-09-24 16:01:42,338 FATAL L256 erpolLogProxyWrapper]: Difference in depth: -109 [2020-09-24 16:01:42,338 FATAL L256 erpolLogProxyWrapper]: Difference in width: 124 [2020-09-24 16:01:42,339 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:42,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-09-24 16:01:42,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:42,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-24 16:01:42,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:42,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 16:01:42,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 124 [2020-09-24 16:01:42,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-24 16:01:42,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:42,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:01:42,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:42,578 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:42,579 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:42,579 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:42,579 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:42,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:01:42,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:42,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:01:42,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:42,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:01:42,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:01:42,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:01:42,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:01:42,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-09-24 16:01:42,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:42,588 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:42,589 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:42,589 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:42,590 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:42,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 16:01:42,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:42,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:01:42,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:42,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:01:42,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 16:01:42,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:01:42,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:01:42,686 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 460 trivial. 0 not checked. [2020-09-24 16:01:42,686 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [943295237] [2020-09-24 16:01:42,686 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 16:01:42,687 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-24 16:01:42,687 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067987191] [2020-09-24 16:01:42,687 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-24 16:01:42,688 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:01:42,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-24 16:01:42,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-09-24 16:01:42,690 INFO L87 Difference]: Start difference. First operand 165 states and 166 transitions. Second operand 12 states. [2020-09-24 16:01:43,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:01:43,086 INFO L93 Difference]: Finished difference Result 190 states and 191 transitions. [2020-09-24 16:01:43,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-24 16:01:43,086 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 164 [2020-09-24 16:01:43,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:01:43,088 INFO L225 Difference]: With dead ends: 190 [2020-09-24 16:01:43,088 INFO L226 Difference]: Without dead ends: 174 [2020-09-24 16:01:43,089 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=83, Invalid=337, Unknown=0, NotChecked=0, Total=420 [2020-09-24 16:01:43,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-09-24 16:01:43,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 171. [2020-09-24 16:01:43,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-09-24 16:01:43,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 172 transitions. [2020-09-24 16:01:43,101 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 172 transitions. Word has length 164 [2020-09-24 16:01:43,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:01:43,102 INFO L479 AbstractCegarLoop]: Abstraction has 171 states and 172 transitions. [2020-09-24 16:01:43,102 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-24 16:01:43,102 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 172 transitions. [2020-09-24 16:01:43,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-09-24 16:01:43,106 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:01:43,106 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:01:43,106 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-24 16:01:43,107 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:01:43,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:01:43,107 INFO L82 PathProgramCache]: Analyzing trace with hash -837336700, now seen corresponding path program 4 times [2020-09-24 16:01:43,107 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:01:43,108 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1631182256] [2020-09-24 16:01:43,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:01:43,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:43,505 FATAL L256 erpolLogProxyWrapper]: Difference in size: 30 [2020-09-24 16:01:43,505 FATAL L256 erpolLogProxyWrapper]: Difference in depth: -110 [2020-09-24 16:01:43,505 FATAL L256 erpolLogProxyWrapper]: Difference in width: 110 [2020-09-24 16:01:43,506 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:43,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-09-24 16:01:43,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:43,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-09-24 16:01:43,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:43,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 16:01:43,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 125 [2020-09-24 16:01:43,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-24 16:01:43,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:43,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:01:43,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:43,733 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:43,733 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:43,733 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:43,733 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:43,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:01:43,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:43,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:01:43,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:43,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:01:43,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:01:43,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:01:43,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:43,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-09-24 16:01:43,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:43,766 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:43,766 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:43,767 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:43,767 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:43,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 16:01:43,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:43,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-24 16:01:43,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:43,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 16:01:43,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:01:43,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 16:01:43,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:43,938 INFO L134 CoverageAnalysis]: Checked inductivity of 504 backedges. 3 proven. 20 refuted. 0 times theorem prover too weak. 481 trivial. 0 not checked. [2020-09-24 16:01:43,938 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1631182256] [2020-09-24 16:01:43,943 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 16:01:43,943 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-24 16:01:43,944 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620481299] [2020-09-24 16:01:43,944 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-24 16:01:43,944 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:01:43,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-24 16:01:43,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2020-09-24 16:01:43,945 INFO L87 Difference]: Start difference. First operand 171 states and 172 transitions. Second operand 16 states. [2020-09-24 16:01:44,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:01:44,875 INFO L93 Difference]: Finished difference Result 171 states and 172 transitions. [2020-09-24 16:01:44,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-24 16:01:44,875 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 170 [2020-09-24 16:01:44,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:01:44,876 INFO L225 Difference]: With dead ends: 171 [2020-09-24 16:01:44,876 INFO L226 Difference]: Without dead ends: 0 [2020-09-24 16:01:44,879 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=151, Invalid=779, Unknown=0, NotChecked=0, Total=930 [2020-09-24 16:01:44,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-24 16:01:44,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-24 16:01:44,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-24 16:01:44,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-24 16:01:44,880 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 170 [2020-09-24 16:01:44,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:01:44,880 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-24 16:01:44,880 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-24 16:01:44,881 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-24 16:01:44,881 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-24 16:01:44,881 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-24 16:01:44,884 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-24 16:01:45,024 INFO L268 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-09-24 16:01:45,024 INFO L268 CegarLoopResult]: For program point L-1-1(line -1) no Hoare annotation was computed. [2020-09-24 16:01:45,024 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-09-24 16:01:45,025 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-09-24 16:01:45,025 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-24 16:01:45,025 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-24 16:01:45,025 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-24 16:01:45,025 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-24 16:01:45,025 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-24 16:01:45,025 INFO L268 CegarLoopResult]: For program point L35-2(lines 35 43) no Hoare annotation was computed. [2020-09-24 16:01:45,025 INFO L268 CegarLoopResult]: For program point L35-3(line 35) no Hoare annotation was computed. [2020-09-24 16:01:45,026 INFO L268 CegarLoopResult]: For program point L35-4(line 35) no Hoare annotation was computed. [2020-09-24 16:01:45,026 INFO L268 CegarLoopResult]: For program point L35-6(line 35) no Hoare annotation was computed. [2020-09-24 16:01:45,026 INFO L268 CegarLoopResult]: For program point L35-7(line 35) no Hoare annotation was computed. [2020-09-24 16:01:45,026 INFO L268 CegarLoopResult]: For program point L27(line 27) no Hoare annotation was computed. [2020-09-24 16:01:45,026 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 20 50) no Hoare annotation was computed. [2020-09-24 16:01:45,026 INFO L268 CegarLoopResult]: For program point L27-3(lines 27 30) no Hoare annotation was computed. [2020-09-24 16:01:45,026 INFO L268 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed. [2020-09-24 16:01:45,026 INFO L268 CegarLoopResult]: For program point L27-4(line 27) no Hoare annotation was computed. [2020-09-24 16:01:45,027 INFO L268 CegarLoopResult]: For program point L27-5(line 27) no Hoare annotation was computed. [2020-09-24 16:01:45,027 INFO L268 CegarLoopResult]: For program point L23-1(line 23) no Hoare annotation was computed. [2020-09-24 16:01:45,027 INFO L271 CegarLoopResult]: At program point L27-6(lines 27 30) the Hoare annotation is: true [2020-09-24 16:01:45,027 INFO L268 CegarLoopResult]: For program point L23-2(line 23) no Hoare annotation was computed. [2020-09-24 16:01:45,027 INFO L268 CegarLoopResult]: For program point L27-7(lines 21 50) no Hoare annotation was computed. [2020-09-24 16:01:45,027 INFO L268 CegarLoopResult]: For program point L23-3(line 23) no Hoare annotation was computed. [2020-09-24 16:01:45,027 INFO L268 CegarLoopResult]: For program point L23-4(line 23) no Hoare annotation was computed. [2020-09-24 16:01:45,027 INFO L268 CegarLoopResult]: For program point L40(line 40) no Hoare annotation was computed. [2020-09-24 16:01:45,028 INFO L268 CegarLoopResult]: For program point L40-1(lines 40 42) no Hoare annotation was computed. [2020-09-24 16:01:45,028 INFO L268 CegarLoopResult]: For program point L40-2(line 40) no Hoare annotation was computed. [2020-09-24 16:01:45,028 INFO L268 CegarLoopResult]: For program point L40-3(line 40) no Hoare annotation was computed. [2020-09-24 16:01:45,028 INFO L268 CegarLoopResult]: For program point L36(line 36) no Hoare annotation was computed. [2020-09-24 16:01:45,028 INFO L268 CegarLoopResult]: For program point L36-1(line 36) no Hoare annotation was computed. [2020-09-24 16:01:45,028 INFO L268 CegarLoopResult]: For program point L36-2(line 36) no Hoare annotation was computed. [2020-09-24 16:01:45,028 INFO L268 CegarLoopResult]: For program point L32(lines 32 44) no Hoare annotation was computed. [2020-09-24 16:01:45,028 INFO L268 CegarLoopResult]: For program point L28(line 28) no Hoare annotation was computed. [2020-09-24 16:01:45,029 INFO L268 CegarLoopResult]: For program point L28-1(line 28) no Hoare annotation was computed. [2020-09-24 16:01:45,029 INFO L268 CegarLoopResult]: For program point L28-2(line 28) no Hoare annotation was computed. [2020-09-24 16:01:45,029 INFO L268 CegarLoopResult]: For program point L24(line 24) no Hoare annotation was computed. [2020-09-24 16:01:45,029 INFO L268 CegarLoopResult]: For program point L49(line 49) no Hoare annotation was computed. [2020-09-24 16:01:45,029 INFO L264 CegarLoopResult]: At program point L41(lines 21 50) the Hoare annotation is: false [2020-09-24 16:01:45,029 INFO L268 CegarLoopResult]: For program point L37-1(lines 37 39) no Hoare annotation was computed. [2020-09-24 16:01:45,029 INFO L268 CegarLoopResult]: For program point L37-2(line 37) no Hoare annotation was computed. [2020-09-24 16:01:45,029 INFO L268 CegarLoopResult]: For program point L33(line 33) no Hoare annotation was computed. [2020-09-24 16:01:45,030 INFO L268 CegarLoopResult]: For program point L37-4(line 37) no Hoare annotation was computed. [2020-09-24 16:01:45,030 INFO L268 CegarLoopResult]: For program point L33-1(line 33) no Hoare annotation was computed. [2020-09-24 16:01:45,030 INFO L264 CegarLoopResult]: At program point L37-5(lines 37 39) the Hoare annotation is: (and (= (select (select |#memory_$Pointer$.base| |main_~#cont~0.base|) |main_~#cont~0.offset|) main_~pa~0.base) (= (+ (select (select |#memory_$Pointer$.offset| |main_~#cont~0.base|) |main_~#cont~0.offset|) 4) main_~pa~0.offset) (let ((.cse0 (select (select |#memory_int| main_~pa~0.base) main_~pa~0.offset))) (or (<= (+ main_~i~0 1) .cse0) (= main_~i~0 .cse0)))) [2020-09-24 16:01:45,030 INFO L264 CegarLoopResult]: At program point L37-6(lines 37 39) the Hoare annotation is: (let ((.cse0 (select (select |#memory_$Pointer$.base| |main_~#cont~0.base|) |main_~#cont~0.offset|)) (.cse1 (+ (select (select |#memory_$Pointer$.offset| |main_~#cont~0.base|) |main_~#cont~0.offset|) 4))) (and (= main_~i~0 (select (select |#memory_int| .cse0) .cse1)) (= .cse0 main_~pa~0.base) (= .cse1 main_~pa~0.offset))) [2020-09-24 16:01:45,030 INFO L268 CegarLoopResult]: For program point L29(line 29) no Hoare annotation was computed. [2020-09-24 16:01:45,030 INFO L268 CegarLoopResult]: For program point L29-1(line 29) no Hoare annotation was computed. [2020-09-24 16:01:45,031 INFO L268 CegarLoopResult]: For program point L29-2(line 29) no Hoare annotation was computed. [2020-09-24 16:01:45,031 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-09-24 16:01:45,031 INFO L268 CegarLoopResult]: For program point L25-1(line 25) no Hoare annotation was computed. [2020-09-24 16:01:45,031 INFO L268 CegarLoopResult]: For program point L25-2(line 25) no Hoare annotation was computed. [2020-09-24 16:01:45,031 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 20 50) no Hoare annotation was computed. [2020-09-24 16:01:45,031 INFO L268 CegarLoopResult]: For program point L38(line 38) no Hoare annotation was computed. [2020-09-24 16:01:45,031 INFO L268 CegarLoopResult]: For program point L38-1(line 38) no Hoare annotation was computed. [2020-09-24 16:01:45,032 INFO L268 CegarLoopResult]: For program point L38-2(line 38) no Hoare annotation was computed. [2020-09-24 16:01:45,032 INFO L268 CegarLoopResult]: For program point L34(line 34) no Hoare annotation was computed. [2020-09-24 16:01:45,032 INFO L268 CegarLoopResult]: For program point L34-1(line 34) no Hoare annotation was computed. [2020-09-24 16:01:45,032 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 48) no Hoare annotation was computed. [2020-09-24 16:01:45,032 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 20 50) the Hoare annotation is: (= |old(#valid)| |#valid|) [2020-09-24 16:01:45,033 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-09-24 16:01:45,033 INFO L268 CegarLoopResult]: For program point L22-1(line 22) no Hoare annotation was computed. [2020-09-24 16:01:45,033 INFO L268 CegarLoopResult]: For program point L22-2(line 22) no Hoare annotation was computed. [2020-09-24 16:01:45,033 INFO L268 CegarLoopResult]: For program point L22-3(line 22) no Hoare annotation was computed. [2020-09-24 16:01:45,033 INFO L268 CegarLoopResult]: For program point L22-4(line 22) no Hoare annotation was computed. [2020-09-24 16:01:45,033 INFO L268 CegarLoopResult]: For program point L35(line 35) no Hoare annotation was computed. [2020-09-24 16:01:45,033 INFO L268 CegarLoopResult]: For program point L35-1(line 35) no Hoare annotation was computed. [2020-09-24 16:01:45,033 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-09-24 16:01:45,034 INFO L268 CegarLoopResult]: For program point L17-1(line 17) no Hoare annotation was computed. [2020-09-24 16:01:45,034 INFO L271 CegarLoopResult]: At program point checkENTRY(lines 15 18) the Hoare annotation is: true [2020-09-24 16:01:45,034 INFO L268 CegarLoopResult]: For program point L15(lines 15 18) no Hoare annotation was computed. [2020-09-24 16:01:45,034 INFO L268 CegarLoopResult]: For program point L17-2(line 17) no Hoare annotation was computed. [2020-09-24 16:01:45,034 INFO L268 CegarLoopResult]: For program point L17-3(line 17) no Hoare annotation was computed. [2020-09-24 16:01:45,034 INFO L268 CegarLoopResult]: For program point L17-4(line 17) no Hoare annotation was computed. [2020-09-24 16:01:45,034 INFO L268 CegarLoopResult]: For program point checkFINAL(lines 15 18) no Hoare annotation was computed. [2020-09-24 16:01:45,034 INFO L268 CegarLoopResult]: For program point checkEXIT(lines 15 18) no Hoare annotation was computed. [2020-09-24 16:01:45,055 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-09-24 16:01:45,056 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-09-24 16:01:45,058 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-09-24 16:01:45,059 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-09-24 16:01:45,059 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-24 16:01:45,059 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-24 16:01:45,060 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-09-24 16:01:45,061 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-09-24 16:01:45,061 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-09-24 16:01:45,061 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-09-24 16:01:45,062 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-24 16:01:45,062 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-24 16:01:45,064 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 04:01:45 BoogieIcfgContainer [2020-09-24 16:01:45,064 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 16:01:45,068 INFO L168 Benchmark]: Toolchain (without parser) took 14713.48 ms. Allocated memory was 138.4 MB in the beginning and 436.7 MB in the end (delta: 298.3 MB). Free memory was 100.6 MB in the beginning and 293.1 MB in the end (delta: -192.5 MB). Peak memory consumption was 105.8 MB. Max. memory is 7.1 GB. [2020-09-24 16:01:45,069 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 138.4 MB. Free memory was 118.7 MB in the beginning and 118.3 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. [2020-09-24 16:01:45,070 INFO L168 Benchmark]: CACSL2BoogieTranslator took 446.47 ms. Allocated memory was 138.4 MB in the beginning and 201.3 MB in the end (delta: 62.9 MB). Free memory was 99.7 MB in the beginning and 179.9 MB in the end (delta: -80.2 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB. [2020-09-24 16:01:45,071 INFO L168 Benchmark]: Boogie Preprocessor took 51.87 ms. Allocated memory is still 201.3 MB. Free memory was 179.9 MB in the beginning and 177.5 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2020-09-24 16:01:45,071 INFO L168 Benchmark]: RCFGBuilder took 519.94 ms. Allocated memory is still 201.3 MB. Free memory was 177.5 MB in the beginning and 155.6 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. [2020-09-24 16:01:45,072 INFO L168 Benchmark]: TraceAbstraction took 13685.27 ms. Allocated memory was 201.3 MB in the beginning and 436.7 MB in the end (delta: 235.4 MB). Free memory was 155.6 MB in the beginning and 293.1 MB in the end (delta: -137.5 MB). Peak memory consumption was 97.9 MB. Max. memory is 7.1 GB. [2020-09-24 16:01:45,076 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 138.4 MB. Free memory was 118.7 MB in the beginning and 118.3 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 446.47 ms. Allocated memory was 138.4 MB in the beginning and 201.3 MB in the end (delta: 62.9 MB). Free memory was 99.7 MB in the beginning and 179.9 MB in the end (delta: -80.2 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 51.87 ms. Allocated memory is still 201.3 MB. Free memory was 179.9 MB in the beginning and 177.5 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 519.94 ms. Allocated memory is still 201.3 MB. Free memory was 177.5 MB in the beginning and 155.6 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 13685.27 ms. Allocated memory was 201.3 MB in the beginning and 436.7 MB in the end (delta: 235.4 MB). Free memory was 155.6 MB in the beginning and 293.1 MB in the end (delta: -137.5 MB). Peak memory consumption was 97.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 48]: 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: 21]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 37]: Loop Invariant [2020-09-24 16:01:45,084 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-09-24 16:01:45,084 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-09-24 16:01:45,085 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-09-24 16:01:45,085 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-09-24 16:01:45,085 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-24 16:01:45,085 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-24 16:01:45,086 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-09-24 16:01:45,086 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-09-24 16:01:45,086 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-09-24 16:01:45,087 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-09-24 16:01:45,087 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-24 16:01:45,087 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: (#memory_$Pointer$[cont][cont] == pa && #memory_$Pointer$[cont][cont] + 4 == pa) && (i + 1 <= unknown-#memory_int-unknown[pa][pa] || i == unknown-#memory_int-unknown[pa][pa]) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 77 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 13.4s, OverallIterations: 16, TraceHistogramMax: 10, AutomataDifference: 6.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 874 SDtfs, 711 SDslu, 5026 SDs, 0 SdLazy, 3103 SolverSat, 111 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 373 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 294 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1089 ImplicationChecksByTransitivity, 4.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=171occurred in iteration=15, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 16 MinimizatonAttempts, 84 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 24 PreInvPairs, 40 NumberOfFragments, 86 HoareAnnotationTreeSize, 24 FomulaSimplifications, 129 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 43 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 1.8s SatisfiabilityAnalysisTime, 4.2s InterpolantComputationTime, 1744 NumberOfCodeBlocks, 1744 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 1728 ConstructedInterpolants, 0 QuantifiedInterpolants, 599694 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 16 InterpolantComputations, 3 PerfectInterpolantSequences, 2324/3625 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...