/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.8 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/locks/test_locks_7.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 07:48:23,791 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 07:48:23,796 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 07:48:23,846 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 07:48:23,846 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 07:48:23,858 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 07:48:23,860 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 07:48:23,865 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 07:48:23,867 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 07:48:23,869 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 07:48:23,870 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 07:48:23,872 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 07:48:23,873 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 07:48:23,876 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 07:48:23,879 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 07:48:23,881 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 07:48:23,883 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 07:48:23,885 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 07:48:23,887 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 07:48:23,894 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 07:48:23,897 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 07:48:23,899 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 07:48:23,900 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 07:48:23,901 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 07:48:23,905 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-25 07:48:23,912 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 07:48:23,913 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 07:48:23,914 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 07:48:23,916 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 07:48:23,919 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 07:48:23,919 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 07:48:23,921 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 07:48:23,922 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 07:48:23,922 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 07:48:23,923 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 07:48:23,924 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 07:48:23,926 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 07:48:23,952 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 07:48:23,953 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 07:48:23,954 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 07:48:23,954 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 07:48:23,955 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 07:48:23,955 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 07:48:23,955 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 07:48:23,955 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 07:48:23,956 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 07:48:23,956 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 07:48:23,956 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 07:48:23,956 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 07:48:23,956 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 07:48:23,957 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 07:48:23,957 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 07:48:23,957 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 07:48:23,957 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 07:48:23,957 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 07:48:23,958 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 07:48:23,958 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 07:48:23,958 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 07:48:23,958 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 07:48:23,959 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 07:48:23,959 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 07:48:23,959 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 07:48:23,959 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 07:48:23,959 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 07:48:23,960 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 07:48:23,960 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 07:48:23,960 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; [2020-09-25 07:48:24,451 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 07:48:24,475 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 07:48:24,483 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 07:48:24,484 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 07:48:24,486 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 07:48:24,487 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/locks/test_locks_7.c [2020-09-25 07:48:24,579 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/38abacacd/d351fa641f3a4a65b14c314bfb05ddae/FLAGa863e6ac2 [2020-09-25 07:48:25,146 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 07:48:25,147 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/locks/test_locks_7.c [2020-09-25 07:48:25,159 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/38abacacd/d351fa641f3a4a65b14c314bfb05ddae/FLAGa863e6ac2 [2020-09-25 07:48:25,469 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/38abacacd/d351fa641f3a4a65b14c314bfb05ddae [2020-09-25 07:48:25,486 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 07:48:25,493 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 07:48:25,497 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 07:48:25,497 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 07:48:25,502 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 07:48:25,503 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:48:25" (1/1) ... [2020-09-25 07:48:25,509 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@245d8fce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:48:25, skipping insertion in model container [2020-09-25 07:48:25,509 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:48:25" (1/1) ... [2020-09-25 07:48:25,519 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 07:48:25,551 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 07:48:25,769 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:48:25,775 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 07:48:25,802 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:48:25,823 INFO L208 MainTranslator]: Completed translation [2020-09-25 07:48:25,824 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:48:25 WrapperNode [2020-09-25 07:48:25,824 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 07:48:25,825 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 07:48:25,825 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 07:48:25,825 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 07:48:25,934 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:48:25" (1/1) ... [2020-09-25 07:48:25,935 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:48:25" (1/1) ... [2020-09-25 07:48:25,942 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:48:25" (1/1) ... [2020-09-25 07:48:25,943 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:48:25" (1/1) ... [2020-09-25 07:48:25,948 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:48:25" (1/1) ... [2020-09-25 07:48:25,956 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:48:25" (1/1) ... [2020-09-25 07:48:25,957 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:48:25" (1/1) ... [2020-09-25 07:48:25,960 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 07:48:25,960 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 07:48:25,960 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 07:48:25,961 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 07:48:25,966 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:48:25" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 07:48:26,056 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 07:48:26,056 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 07:48:26,056 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 07:48:26,056 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 07:48:26,056 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 07:48:26,057 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 07:48:26,057 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 07:48:26,057 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 07:48:26,437 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 07:48:26,437 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 07:48:26,443 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:48:26 BoogieIcfgContainer [2020-09-25 07:48:26,443 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 07:48:26,444 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 07:48:26,444 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 07:48:26,448 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 07:48:26,449 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 07:48:25" (1/3) ... [2020-09-25 07:48:26,450 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67374163 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:48:26, skipping insertion in model container [2020-09-25 07:48:26,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:48:25" (2/3) ... [2020-09-25 07:48:26,450 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67374163 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:48:26, skipping insertion in model container [2020-09-25 07:48:26,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:48:26" (3/3) ... [2020-09-25 07:48:26,454 INFO L109 eAbstractionObserver]: Analyzing ICFG test_locks_7.c [2020-09-25 07:48:26,466 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 07:48:26,477 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 07:48:26,499 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 07:48:26,531 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 07:48:26,531 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 07:48:26,531 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 07:48:26,532 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 07:48:26,532 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 07:48:26,532 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 07:48:26,532 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 07:48:26,532 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 07:48:26,556 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states. [2020-09-25 07:48:26,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-09-25 07:48:26,566 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:48:26,567 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] [2020-09-25 07:48:26,568 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:48:26,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:48:26,574 INFO L82 PathProgramCache]: Analyzing trace with hash 1826051656, now seen corresponding path program 1 times [2020-09-25 07:48:26,583 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:48:26,583 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1979403825] [2020-09-25 07:48:26,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:48:26,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:26,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:26,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:26,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-09-25 07:48:26,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:48:26,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 249 [2020-09-25 07:48:26,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:26,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:26,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:48:26,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-09-25 07:48:26,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 07:48:26,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 07:48:27,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:48:27,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:27,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:27,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:27,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:48:27,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:48:27,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 07:48:27,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:27,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:27,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:48:27,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:48:27,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:48:27,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:48:27,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:48:27,105 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1979403825] [2020-09-25 07:48:27,108 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:48:27,109 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 07:48:27,111 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413718679] [2020-09-25 07:48:27,118 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 07:48:27,119 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:48:27,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 07:48:27,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 07:48:27,140 INFO L87 Difference]: Start difference. First operand 88 states. Second operand 3 states. [2020-09-25 07:48:27,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:48:27,217 INFO L93 Difference]: Finished difference Result 191 states and 260 transitions. [2020-09-25 07:48:27,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 07:48:27,219 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 55 [2020-09-25 07:48:27,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:48:27,235 INFO L225 Difference]: With dead ends: 191 [2020-09-25 07:48:27,235 INFO L226 Difference]: Without dead ends: 128 [2020-09-25 07:48:27,240 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 07:48:27,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-09-25 07:48:27,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 126. [2020-09-25 07:48:27,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-09-25 07:48:27,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 164 transitions. [2020-09-25 07:48:27,301 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 164 transitions. Word has length 55 [2020-09-25 07:48:27,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:48:27,302 INFO L479 AbstractCegarLoop]: Abstraction has 126 states and 164 transitions. [2020-09-25 07:48:27,302 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 07:48:27,302 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 164 transitions. [2020-09-25 07:48:27,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-25 07:48:27,304 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:48:27,305 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] [2020-09-25 07:48:27,305 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 07:48:27,305 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:48:27,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:48:27,306 INFO L82 PathProgramCache]: Analyzing trace with hash 1965492109, now seen corresponding path program 1 times [2020-09-25 07:48:27,306 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:48:27,307 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [908866850] [2020-09-25 07:48:27,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:48:27,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:27,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:27,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:27,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-25 07:48:27,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:48:27,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-09-25 07:48:27,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:27,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:27,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:48:27,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-09-25 07:48:27,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 07:48:27,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:48:27,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:48:27,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:27,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:27,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:27,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:48:27,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:48:27,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 07:48:27,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:27,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:27,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:48:27,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:48:27,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:48:27,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 07:48:27,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:48:27,466 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [908866850] [2020-09-25 07:48:27,467 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:48:27,467 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 07:48:27,468 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746315755] [2020-09-25 07:48:27,470 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 07:48:27,472 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:48:27,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 07:48:27,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 07:48:27,474 INFO L87 Difference]: Start difference. First operand 126 states and 164 transitions. Second operand 3 states. [2020-09-25 07:48:27,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:48:27,528 INFO L93 Difference]: Finished difference Result 154 states and 202 transitions. [2020-09-25 07:48:27,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 07:48:27,530 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 56 [2020-09-25 07:48:27,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:48:27,535 INFO L225 Difference]: With dead ends: 154 [2020-09-25 07:48:27,535 INFO L226 Difference]: Without dead ends: 152 [2020-09-25 07:48:27,538 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 07:48:27,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-09-25 07:48:27,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 126. [2020-09-25 07:48:27,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-09-25 07:48:27,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 163 transitions. [2020-09-25 07:48:27,559 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 163 transitions. Word has length 56 [2020-09-25 07:48:27,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:48:27,560 INFO L479 AbstractCegarLoop]: Abstraction has 126 states and 163 transitions. [2020-09-25 07:48:27,560 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 07:48:27,561 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 163 transitions. [2020-09-25 07:48:27,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-25 07:48:27,563 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:48:27,563 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] [2020-09-25 07:48:27,563 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 07:48:27,564 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:48:27,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:48:27,564 INFO L82 PathProgramCache]: Analyzing trace with hash 773271458, now seen corresponding path program 1 times [2020-09-25 07:48:27,565 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:48:27,565 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1121189098] [2020-09-25 07:48:27,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:48:27,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:27,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:27,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:27,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-25 07:48:27,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:48:27,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-09-25 07:48:27,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:27,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:27,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:48:27,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-09-25 07:48:27,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 07:48:27,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:48:27,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:48:27,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:27,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:27,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:27,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:48:27,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:48:27,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 07:48:27,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:27,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:27,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:48:27,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:48:27,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:48:27,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:48:27,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:48:27,750 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1121189098] [2020-09-25 07:48:27,750 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:48:27,750 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 07:48:27,751 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729342327] [2020-09-25 07:48:27,752 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 07:48:27,753 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:48:27,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 07:48:27,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 07:48:27,754 INFO L87 Difference]: Start difference. First operand 126 states and 163 transitions. Second operand 3 states. [2020-09-25 07:48:27,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:48:27,804 INFO L93 Difference]: Finished difference Result 306 states and 415 transitions. [2020-09-25 07:48:27,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 07:48:27,805 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 56 [2020-09-25 07:48:27,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:48:27,810 INFO L225 Difference]: With dead ends: 306 [2020-09-25 07:48:27,810 INFO L226 Difference]: Without dead ends: 213 [2020-09-25 07:48:27,812 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 07:48:27,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2020-09-25 07:48:27,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 211. [2020-09-25 07:48:27,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2020-09-25 07:48:27,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 280 transitions. [2020-09-25 07:48:27,845 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 280 transitions. Word has length 56 [2020-09-25 07:48:27,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:48:27,846 INFO L479 AbstractCegarLoop]: Abstraction has 211 states and 280 transitions. [2020-09-25 07:48:27,846 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 07:48:27,846 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 280 transitions. [2020-09-25 07:48:27,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-25 07:48:27,849 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:48:27,850 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:48:27,850 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 07:48:27,850 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:48:27,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:48:27,851 INFO L82 PathProgramCache]: Analyzing trace with hash -610540190, now seen corresponding path program 1 times [2020-09-25 07:48:27,851 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:48:27,851 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [884157117] [2020-09-25 07:48:27,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:48:27,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:27,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:27,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:27,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-25 07:48:27,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:48:27,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-09-25 07:48:27,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:27,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:27,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:48:27,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-09-25 07:48:27,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 07:48:27,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:48:27,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:48:27,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:27,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:27,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:27,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:48:27,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:48:27,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 07:48:27,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:27,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:27,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:48:27,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:48:27,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:48:27,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:48:27,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:48:27,964 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [884157117] [2020-09-25 07:48:27,964 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:48:27,965 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 07:48:27,965 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101738369] [2020-09-25 07:48:27,965 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 07:48:27,966 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:48:27,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 07:48:27,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 07:48:27,967 INFO L87 Difference]: Start difference. First operand 211 states and 280 transitions. Second operand 3 states. [2020-09-25 07:48:27,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:48:27,991 INFO L93 Difference]: Finished difference Result 259 states and 346 transitions. [2020-09-25 07:48:27,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 07:48:27,991 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 57 [2020-09-25 07:48:27,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:48:27,993 INFO L225 Difference]: With dead ends: 259 [2020-09-25 07:48:27,994 INFO L226 Difference]: Without dead ends: 257 [2020-09-25 07:48:27,994 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 07:48:27,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2020-09-25 07:48:28,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 211. [2020-09-25 07:48:28,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2020-09-25 07:48:28,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 278 transitions. [2020-09-25 07:48:28,009 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 278 transitions. Word has length 57 [2020-09-25 07:48:28,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:48:28,010 INFO L479 AbstractCegarLoop]: Abstraction has 211 states and 278 transitions. [2020-09-25 07:48:28,010 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 07:48:28,010 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 278 transitions. [2020-09-25 07:48:28,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-25 07:48:28,012 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:48:28,012 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:48:28,012 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 07:48:28,013 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:48:28,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:48:28,013 INFO L82 PathProgramCache]: Analyzing trace with hash -1798143236, now seen corresponding path program 1 times [2020-09-25 07:48:28,013 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:48:28,014 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1275459650] [2020-09-25 07:48:28,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:48:28,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:28,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:28,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:28,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-25 07:48:28,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:48:28,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-09-25 07:48:28,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:28,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:28,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:48:28,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-09-25 07:48:28,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 07:48:28,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:48:28,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:48:28,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:28,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:28,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:28,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:48:28,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:48:28,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 07:48:28,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:28,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:28,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:48:28,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:48:28,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:48:28,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:48:28,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:48:28,123 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1275459650] [2020-09-25 07:48:28,123 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:48:28,123 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 07:48:28,123 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217743209] [2020-09-25 07:48:28,125 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 07:48:28,125 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:48:28,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 07:48:28,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 07:48:28,126 INFO L87 Difference]: Start difference. First operand 211 states and 278 transitions. Second operand 3 states. [2020-09-25 07:48:28,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:48:28,155 INFO L93 Difference]: Finished difference Result 555 states and 752 transitions. [2020-09-25 07:48:28,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 07:48:28,156 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 57 [2020-09-25 07:48:28,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:48:28,160 INFO L225 Difference]: With dead ends: 555 [2020-09-25 07:48:28,160 INFO L226 Difference]: Without dead ends: 377 [2020-09-25 07:48:28,165 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 07:48:28,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2020-09-25 07:48:28,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 375. [2020-09-25 07:48:28,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 375 states. [2020-09-25 07:48:28,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 498 transitions. [2020-09-25 07:48:28,207 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 498 transitions. Word has length 57 [2020-09-25 07:48:28,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:48:28,208 INFO L479 AbstractCegarLoop]: Abstraction has 375 states and 498 transitions. [2020-09-25 07:48:28,208 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 07:48:28,209 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 498 transitions. [2020-09-25 07:48:28,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-25 07:48:28,217 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:48:28,217 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:48:28,217 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 07:48:28,217 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:48:28,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:48:28,218 INFO L82 PathProgramCache]: Analyzing trace with hash 1136837537, now seen corresponding path program 1 times [2020-09-25 07:48:28,218 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:48:28,218 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [278391396] [2020-09-25 07:48:28,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:48:28,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:28,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:28,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:28,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-25 07:48:28,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:48:28,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-09-25 07:48:28,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:28,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:28,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:48:28,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-09-25 07:48:28,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 07:48:28,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:48:28,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:48:28,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:28,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:28,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:28,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:48:28,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:48:28,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 07:48:28,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:28,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:28,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:48:28,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:48:28,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:48:28,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:48:28,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:48:28,337 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [278391396] [2020-09-25 07:48:28,338 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:48:28,339 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 07:48:28,339 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255494523] [2020-09-25 07:48:28,340 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 07:48:28,340 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:48:28,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 07:48:28,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 07:48:28,341 INFO L87 Difference]: Start difference. First operand 375 states and 498 transitions. Second operand 3 states. [2020-09-25 07:48:28,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:48:28,360 INFO L93 Difference]: Finished difference Result 459 states and 612 transitions. [2020-09-25 07:48:28,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 07:48:28,361 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 58 [2020-09-25 07:48:28,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:48:28,364 INFO L225 Difference]: With dead ends: 459 [2020-09-25 07:48:28,364 INFO L226 Difference]: Without dead ends: 457 [2020-09-25 07:48:28,365 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 07:48:28,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2020-09-25 07:48:28,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 375. [2020-09-25 07:48:28,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 375 states. [2020-09-25 07:48:28,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 494 transitions. [2020-09-25 07:48:28,379 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 494 transitions. Word has length 58 [2020-09-25 07:48:28,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:48:28,380 INFO L479 AbstractCegarLoop]: Abstraction has 375 states and 494 transitions. [2020-09-25 07:48:28,380 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 07:48:28,380 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 494 transitions. [2020-09-25 07:48:28,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-25 07:48:28,382 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:48:28,382 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:48:28,382 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 07:48:28,382 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:48:28,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:48:28,383 INFO L82 PathProgramCache]: Analyzing trace with hash 92380246, now seen corresponding path program 1 times [2020-09-25 07:48:28,383 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:48:28,383 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [527944543] [2020-09-25 07:48:28,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:48:28,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:28,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:28,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:28,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-25 07:48:28,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:48:28,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-09-25 07:48:28,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:28,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:28,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:48:28,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-09-25 07:48:28,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 07:48:28,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:48:28,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:48:28,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:28,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:28,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:28,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:48:28,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:48:28,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 07:48:28,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:28,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:28,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:48:28,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:48:28,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:48:28,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:48:28,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:48:28,493 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [527944543] [2020-09-25 07:48:28,493 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:48:28,493 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 07:48:28,494 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269123619] [2020-09-25 07:48:28,494 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 07:48:28,494 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:48:28,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 07:48:28,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 07:48:28,495 INFO L87 Difference]: Start difference. First operand 375 states and 494 transitions. Second operand 3 states. [2020-09-25 07:48:28,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:48:28,527 INFO L93 Difference]: Finished difference Result 1035 states and 1384 transitions. [2020-09-25 07:48:28,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 07:48:28,528 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 58 [2020-09-25 07:48:28,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:48:28,532 INFO L225 Difference]: With dead ends: 1035 [2020-09-25 07:48:28,533 INFO L226 Difference]: Without dead ends: 693 [2020-09-25 07:48:28,534 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 07:48:28,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 693 states. [2020-09-25 07:48:28,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 693 to 691. [2020-09-25 07:48:28,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 691 states. [2020-09-25 07:48:28,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 906 transitions. [2020-09-25 07:48:28,560 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 906 transitions. Word has length 58 [2020-09-25 07:48:28,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:48:28,561 INFO L479 AbstractCegarLoop]: Abstraction has 691 states and 906 transitions. [2020-09-25 07:48:28,561 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 07:48:28,561 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 906 transitions. [2020-09-25 07:48:28,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-09-25 07:48:28,563 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:48:28,563 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:48:28,563 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 07:48:28,564 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:48:28,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:48:28,564 INFO L82 PathProgramCache]: Analyzing trace with hash -529027402, now seen corresponding path program 1 times [2020-09-25 07:48:28,564 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:48:28,565 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [730658306] [2020-09-25 07:48:28,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:48:28,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:28,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:28,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:28,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-09-25 07:48:28,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:48:28,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-25 07:48:28,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:28,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:28,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:48:28,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-09-25 07:48:28,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 07:48:28,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:48:28,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:48:28,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:28,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:28,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:28,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:48:28,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:48:28,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 07:48:28,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:28,650 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:28,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:48:28,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:48:28,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:48:28,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:48:28,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:48:28,657 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [730658306] [2020-09-25 07:48:28,657 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:48:28,657 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 07:48:28,658 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080679550] [2020-09-25 07:48:28,658 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 07:48:28,659 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:48:28,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 07:48:28,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 07:48:28,659 INFO L87 Difference]: Start difference. First operand 691 states and 906 transitions. Second operand 3 states. [2020-09-25 07:48:28,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:48:28,693 INFO L93 Difference]: Finished difference Result 839 states and 1100 transitions. [2020-09-25 07:48:28,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 07:48:28,694 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 59 [2020-09-25 07:48:28,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:48:28,698 INFO L225 Difference]: With dead ends: 839 [2020-09-25 07:48:28,699 INFO L226 Difference]: Without dead ends: 837 [2020-09-25 07:48:28,699 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 07:48:28,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 837 states. [2020-09-25 07:48:28,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 837 to 691. [2020-09-25 07:48:28,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 691 states. [2020-09-25 07:48:28,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 898 transitions. [2020-09-25 07:48:28,721 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 898 transitions. Word has length 59 [2020-09-25 07:48:28,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:48:28,721 INFO L479 AbstractCegarLoop]: Abstraction has 691 states and 898 transitions. [2020-09-25 07:48:28,721 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 07:48:28,721 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 898 transitions. [2020-09-25 07:48:28,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-09-25 07:48:28,723 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:48:28,723 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:48:28,723 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 07:48:28,724 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:48:28,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:48:28,724 INFO L82 PathProgramCache]: Analyzing trace with hash -1430933584, now seen corresponding path program 1 times [2020-09-25 07:48:28,724 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:48:28,725 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1853715850] [2020-09-25 07:48:28,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:48:28,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:28,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:28,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:28,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-09-25 07:48:28,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:48:28,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-25 07:48:28,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:28,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:28,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:48:28,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-09-25 07:48:28,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 07:48:28,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:48:28,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:48:28,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:28,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:28,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:28,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:48:28,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:48:28,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 07:48:28,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:28,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:28,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:48:28,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:48:28,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:48:28,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:48:28,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:48:28,809 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1853715850] [2020-09-25 07:48:28,809 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:48:28,809 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 07:48:28,809 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897804204] [2020-09-25 07:48:28,810 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 07:48:28,810 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:48:28,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 07:48:28,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 07:48:28,811 INFO L87 Difference]: Start difference. First operand 691 states and 898 transitions. Second operand 3 states. [2020-09-25 07:48:28,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:48:28,843 INFO L93 Difference]: Finished difference Result 1959 states and 2564 transitions. [2020-09-25 07:48:28,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 07:48:28,844 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 59 [2020-09-25 07:48:28,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:48:28,850 INFO L225 Difference]: With dead ends: 1959 [2020-09-25 07:48:28,850 INFO L226 Difference]: Without dead ends: 1301 [2020-09-25 07:48:28,852 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 07:48:28,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1301 states. [2020-09-25 07:48:28,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1301 to 1299. [2020-09-25 07:48:28,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1299 states. [2020-09-25 07:48:28,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1299 states to 1299 states and 1666 transitions. [2020-09-25 07:48:28,888 INFO L78 Accepts]: Start accepts. Automaton has 1299 states and 1666 transitions. Word has length 59 [2020-09-25 07:48:28,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:48:28,888 INFO L479 AbstractCegarLoop]: Abstraction has 1299 states and 1666 transitions. [2020-09-25 07:48:28,888 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 07:48:28,889 INFO L276 IsEmpty]: Start isEmpty. Operand 1299 states and 1666 transitions. [2020-09-25 07:48:28,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-09-25 07:48:28,890 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:48:28,891 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:48:28,891 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 07:48:28,891 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:48:28,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:48:28,891 INFO L82 PathProgramCache]: Analyzing trace with hash -631232587, now seen corresponding path program 1 times [2020-09-25 07:48:28,892 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:48:28,892 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1170278747] [2020-09-25 07:48:28,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:48:28,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:28,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:28,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:28,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 07:48:28,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:48:28,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-25 07:48:28,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:28,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:28,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:48:28,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-09-25 07:48:28,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 07:48:28,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:48:28,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:48:28,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:28,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:28,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:28,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:48:28,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:48:28,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:48:28,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:28,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:28,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:48:28,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:48:28,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:48:28,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:48:28,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:48:28,971 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1170278747] [2020-09-25 07:48:28,972 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:48:28,972 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 07:48:28,972 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606238172] [2020-09-25 07:48:28,973 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 07:48:28,973 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:48:28,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 07:48:28,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 07:48:28,973 INFO L87 Difference]: Start difference. First operand 1299 states and 1666 transitions. Second operand 3 states. [2020-09-25 07:48:28,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:48:28,999 INFO L93 Difference]: Finished difference Result 1559 states and 1988 transitions. [2020-09-25 07:48:29,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 07:48:29,000 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 60 [2020-09-25 07:48:29,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:48:29,015 INFO L225 Difference]: With dead ends: 1559 [2020-09-25 07:48:29,016 INFO L226 Difference]: Without dead ends: 1557 [2020-09-25 07:48:29,017 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 07:48:29,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1557 states. [2020-09-25 07:48:29,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1557 to 1299. [2020-09-25 07:48:29,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1299 states. [2020-09-25 07:48:29,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1299 states to 1299 states and 1650 transitions. [2020-09-25 07:48:29,062 INFO L78 Accepts]: Start accepts. Automaton has 1299 states and 1650 transitions. Word has length 60 [2020-09-25 07:48:29,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:48:29,062 INFO L479 AbstractCegarLoop]: Abstraction has 1299 states and 1650 transitions. [2020-09-25 07:48:29,062 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 07:48:29,062 INFO L276 IsEmpty]: Start isEmpty. Operand 1299 states and 1650 transitions. [2020-09-25 07:48:29,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-09-25 07:48:29,064 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:48:29,065 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:48:29,065 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 07:48:29,065 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:48:29,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:48:29,066 INFO L82 PathProgramCache]: Analyzing trace with hash -1409021686, now seen corresponding path program 1 times [2020-09-25 07:48:29,066 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:48:29,066 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [814137810] [2020-09-25 07:48:29,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:48:29,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:29,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:29,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:29,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 07:48:29,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:48:29,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-25 07:48:29,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:29,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:29,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:48:29,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-09-25 07:48:29,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 07:48:29,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:48:29,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:48:29,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:29,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:29,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:29,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:48:29,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:48:29,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 07:48:29,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:29,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:29,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:48:29,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:48:29,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:48:29,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:48:29,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:48:29,145 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [814137810] [2020-09-25 07:48:29,145 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:48:29,145 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 07:48:29,146 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282648678] [2020-09-25 07:48:29,146 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 07:48:29,146 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:48:29,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 07:48:29,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 07:48:29,147 INFO L87 Difference]: Start difference. First operand 1299 states and 1650 transitions. Second operand 3 states. [2020-09-25 07:48:29,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:48:29,190 INFO L93 Difference]: Finished difference Result 3735 states and 4756 transitions. [2020-09-25 07:48:29,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 07:48:29,191 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 60 [2020-09-25 07:48:29,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:48:29,203 INFO L225 Difference]: With dead ends: 3735 [2020-09-25 07:48:29,203 INFO L226 Difference]: Without dead ends: 2469 [2020-09-25 07:48:29,207 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 07:48:29,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2469 states. [2020-09-25 07:48:29,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2469 to 2467. [2020-09-25 07:48:29,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2467 states. [2020-09-25 07:48:29,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2467 states to 2467 states and 3074 transitions. [2020-09-25 07:48:29,301 INFO L78 Accepts]: Start accepts. Automaton has 2467 states and 3074 transitions. Word has length 60 [2020-09-25 07:48:29,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:48:29,302 INFO L479 AbstractCegarLoop]: Abstraction has 2467 states and 3074 transitions. [2020-09-25 07:48:29,302 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 07:48:29,302 INFO L276 IsEmpty]: Start isEmpty. Operand 2467 states and 3074 transitions. [2020-09-25 07:48:29,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-09-25 07:48:29,304 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:48:29,304 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:48:29,305 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 07:48:29,305 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:48:29,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:48:29,305 INFO L82 PathProgramCache]: Analyzing trace with hash -729752476, now seen corresponding path program 1 times [2020-09-25 07:48:29,306 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:48:29,306 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [569057722] [2020-09-25 07:48:29,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:48:29,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:29,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:29,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:29,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 07:48:29,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:48:29,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-09-25 07:48:29,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:29,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:29,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:48:29,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-09-25 07:48:29,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 07:48:29,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:48:29,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:48:29,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:29,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:29,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:29,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:48:29,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:48:29,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 07:48:29,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:29,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:29,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:48:29,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:48:29,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:48:29,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:48:29,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:48:29,393 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [569057722] [2020-09-25 07:48:29,394 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:48:29,394 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 07:48:29,395 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143001716] [2020-09-25 07:48:29,395 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 07:48:29,396 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:48:29,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 07:48:29,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 07:48:29,397 INFO L87 Difference]: Start difference. First operand 2467 states and 3074 transitions. Second operand 3 states. [2020-09-25 07:48:29,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:48:29,492 INFO L93 Difference]: Finished difference Result 7143 states and 8900 transitions. [2020-09-25 07:48:29,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 07:48:29,493 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 61 [2020-09-25 07:48:29,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:48:29,514 INFO L225 Difference]: With dead ends: 7143 [2020-09-25 07:48:29,515 INFO L226 Difference]: Without dead ends: 3637 [2020-09-25 07:48:29,522 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 07:48:29,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3637 states. [2020-09-25 07:48:29,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3637 to 3635. [2020-09-25 07:48:29,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3635 states. [2020-09-25 07:48:29,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3635 states to 3635 states and 4370 transitions. [2020-09-25 07:48:29,650 INFO L78 Accepts]: Start accepts. Automaton has 3635 states and 4370 transitions. Word has length 61 [2020-09-25 07:48:29,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:48:29,650 INFO L479 AbstractCegarLoop]: Abstraction has 3635 states and 4370 transitions. [2020-09-25 07:48:29,650 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 07:48:29,651 INFO L276 IsEmpty]: Start isEmpty. Operand 3635 states and 4370 transitions. [2020-09-25 07:48:29,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-09-25 07:48:29,653 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:48:29,654 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:48:29,654 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-25 07:48:29,654 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:48:29,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:48:29,654 INFO L82 PathProgramCache]: Analyzing trace with hash 495374346, now seen corresponding path program 1 times [2020-09-25 07:48:29,655 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:48:29,655 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [781392951] [2020-09-25 07:48:29,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:48:29,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:29,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:29,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:29,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 07:48:29,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:48:29,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-25 07:48:29,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:29,718 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:29,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:48:29,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-09-25 07:48:29,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 07:48:29,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:48:29,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:48:29,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:29,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:29,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:29,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:48:29,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:48:29,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 07:48:29,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:29,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:29,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:48:29,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:48:29,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:48:29,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:48:29,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:48:29,752 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [781392951] [2020-09-25 07:48:29,752 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:48:29,752 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 07:48:29,753 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534598674] [2020-09-25 07:48:29,753 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 07:48:29,754 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:48:29,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 07:48:29,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 07:48:29,754 INFO L87 Difference]: Start difference. First operand 3635 states and 4370 transitions. Second operand 3 states. [2020-09-25 07:48:29,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:48:29,813 INFO L93 Difference]: Finished difference Result 4087 states and 4852 transitions. [2020-09-25 07:48:29,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 07:48:29,814 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 61 [2020-09-25 07:48:29,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:48:29,830 INFO L225 Difference]: With dead ends: 4087 [2020-09-25 07:48:29,830 INFO L226 Difference]: Without dead ends: 2917 [2020-09-25 07:48:29,834 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 07:48:29,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2917 states. [2020-09-25 07:48:29,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2917 to 2467. [2020-09-25 07:48:29,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2467 states. [2020-09-25 07:48:29,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2467 states to 2467 states and 2914 transitions. [2020-09-25 07:48:29,916 INFO L78 Accepts]: Start accepts. Automaton has 2467 states and 2914 transitions. Word has length 61 [2020-09-25 07:48:29,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:48:29,917 INFO L479 AbstractCegarLoop]: Abstraction has 2467 states and 2914 transitions. [2020-09-25 07:48:29,917 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 07:48:29,917 INFO L276 IsEmpty]: Start isEmpty. Operand 2467 states and 2914 transitions. [2020-09-25 07:48:29,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-09-25 07:48:29,919 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:48:29,920 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:48:29,920 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-25 07:48:29,920 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:48:29,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:48:29,921 INFO L82 PathProgramCache]: Analyzing trace with hash 1060451273, now seen corresponding path program 1 times [2020-09-25 07:48:29,921 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:48:29,921 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1116795966] [2020-09-25 07:48:29,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:48:29,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:29,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:30,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:30,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-25 07:48:30,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:48:30,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-09-25 07:48:30,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:30,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:30,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:48:30,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-09-25 07:48:30,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 07:48:30,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:48:30,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:48:30,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:30,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:30,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:30,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:48:30,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:48:30,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:48:30,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:30,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:30,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:48:30,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:48:30,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:48:30,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:48:30,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:48:30,077 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1116795966] [2020-09-25 07:48:30,078 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:48:30,078 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 07:48:30,078 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924328316] [2020-09-25 07:48:30,078 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 07:48:30,079 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:48:30,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 07:48:30,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 07:48:30,080 INFO L87 Difference]: Start difference. First operand 2467 states and 2914 transitions. Second operand 3 states. [2020-09-25 07:48:30,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:48:30,109 INFO L93 Difference]: Finished difference Result 2467 states and 2914 transitions. [2020-09-25 07:48:30,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 07:48:30,109 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 62 [2020-09-25 07:48:30,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:48:30,110 INFO L225 Difference]: With dead ends: 2467 [2020-09-25 07:48:30,110 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 07:48:30,118 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 07:48:30,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 07:48:30,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 07:48:30,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 07:48:30,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 07:48:30,119 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 62 [2020-09-25 07:48:30,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:48:30,119 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 07:48:30,120 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 07:48:30,120 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 07:48:30,120 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 07:48:30,120 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-25 07:48:30,123 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 07:48:30,160 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-25 07:48:30,161 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 07:48:30,161 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 07:48:30,161 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-25 07:48:30,161 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 07:48:30,161 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 07:48:30,161 INFO L268 CegarLoopResult]: For program point L93(line 93) no Hoare annotation was computed. [2020-09-25 07:48:30,161 INFO L268 CegarLoopResult]: For program point L60(line 60) no Hoare annotation was computed. [2020-09-25 07:48:30,162 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 4 121) no Hoare annotation was computed. [2020-09-25 07:48:30,162 INFO L268 CegarLoopResult]: For program point L52(line 52) no Hoare annotation was computed. [2020-09-25 07:48:30,162 INFO L268 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-09-25 07:48:30,162 INFO L268 CegarLoopResult]: For program point L102(line 102) no Hoare annotation was computed. [2020-09-25 07:48:30,162 INFO L268 CegarLoopResult]: For program point L28(line 28) no Hoare annotation was computed. [2020-09-25 07:48:30,162 INFO L268 CegarLoopResult]: For program point L86-1(lines 30 116) no Hoare annotation was computed. [2020-09-25 07:48:30,162 INFO L271 CegarLoopResult]: At program point L111-1(lines 30 116) the Hoare annotation is: true [2020-09-25 07:48:30,163 INFO L268 CegarLoopResult]: For program point L45(line 45) no Hoare annotation was computed. [2020-09-25 07:48:30,163 INFO L268 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-09-25 07:48:30,163 INFO L268 CegarLoopResult]: For program point L12-1(line 12) no Hoare annotation was computed. [2020-09-25 07:48:30,163 INFO L268 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-09-25 07:48:30,163 INFO L268 CegarLoopResult]: For program point L103(line 103) no Hoare annotation was computed. [2020-09-25 07:48:30,163 INFO L268 CegarLoopResult]: For program point L37(line 37) no Hoare annotation was computed. [2020-09-25 07:48:30,163 INFO L268 CegarLoopResult]: For program point L120(line 120) no Hoare annotation was computed. [2020-09-25 07:48:30,163 INFO L268 CegarLoopResult]: For program point L87(line 87) no Hoare annotation was computed. [2020-09-25 07:48:30,164 INFO L268 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed. [2020-09-25 07:48:30,164 INFO L268 CegarLoopResult]: For program point L21-1(line 21) no Hoare annotation was computed. [2020-09-25 07:48:30,164 INFO L268 CegarLoopResult]: For program point L21-2(line 21) no Hoare annotation was computed. [2020-09-25 07:48:30,164 INFO L268 CegarLoopResult]: For program point L112(line 112) no Hoare annotation was computed. [2020-09-25 07:48:30,164 INFO L264 CegarLoopResult]: At program point L112-1(lines 5 121) the Hoare annotation is: false [2020-09-25 07:48:30,164 INFO L268 CegarLoopResult]: For program point L13(line 13) no Hoare annotation was computed. [2020-09-25 07:48:30,164 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 4 121) no Hoare annotation was computed. [2020-09-25 07:48:30,166 INFO L268 CegarLoopResult]: For program point L71-1(lines 30 116) no Hoare annotation was computed. [2020-09-25 07:48:30,166 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 119) no Hoare annotation was computed. [2020-09-25 07:48:30,167 INFO L268 CegarLoopResult]: For program point L96-1(lines 30 116) no Hoare annotation was computed. [2020-09-25 07:48:30,167 INFO L268 CegarLoopResult]: For program point L63-1(lines 30 116) no Hoare annotation was computed. [2020-09-25 07:48:30,168 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 4 121) the Hoare annotation is: true [2020-09-25 07:48:30,168 INFO L268 CegarLoopResult]: For program point L88(line 88) no Hoare annotation was computed. [2020-09-25 07:48:30,168 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-09-25 07:48:30,168 INFO L268 CegarLoopResult]: For program point L55-1(lines 30 116) no Hoare annotation was computed. [2020-09-25 07:48:30,168 INFO L268 CegarLoopResult]: For program point L113(line 113) no Hoare annotation was computed. [2020-09-25 07:48:30,168 INFO L268 CegarLoopResult]: For program point L47(line 47) no Hoare annotation was computed. [2020-09-25 07:48:30,168 INFO L268 CegarLoopResult]: For program point L72(line 72) no Hoare annotation was computed. [2020-09-25 07:48:30,169 INFO L268 CegarLoopResult]: For program point L39(line 39) no Hoare annotation was computed. [2020-09-25 07:48:30,169 INFO L268 CegarLoopResult]: For program point L6(line 6) no Hoare annotation was computed. [2020-09-25 07:48:30,169 INFO L268 CegarLoopResult]: For program point L6-1(line 6) no Hoare annotation was computed. [2020-09-25 07:48:30,169 INFO L268 CegarLoopResult]: For program point L97(line 97) no Hoare annotation was computed. [2020-09-25 07:48:30,169 INFO L268 CegarLoopResult]: For program point L64(line 64) no Hoare annotation was computed. [2020-09-25 07:48:30,169 INFO L268 CegarLoopResult]: For program point L31(line 31) no Hoare annotation was computed. [2020-09-25 07:48:30,170 INFO L268 CegarLoopResult]: For program point L31-1(line 31) no Hoare annotation was computed. [2020-09-25 07:48:30,170 INFO L268 CegarLoopResult]: For program point L31-2(line 31) no Hoare annotation was computed. [2020-09-25 07:48:30,170 INFO L268 CegarLoopResult]: For program point L56(line 56) no Hoare annotation was computed. [2020-09-25 07:48:30,170 INFO L268 CegarLoopResult]: For program point L81-1(lines 30 116) no Hoare annotation was computed. [2020-09-25 07:48:30,170 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-09-25 07:48:30,170 INFO L268 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2020-09-25 07:48:30,170 INFO L268 CegarLoopResult]: For program point L15-2(line 15) no Hoare annotation was computed. [2020-09-25 07:48:30,171 INFO L268 CegarLoopResult]: For program point L106-1(lines 30 116) no Hoare annotation was computed. [2020-09-25 07:48:30,171 INFO L268 CegarLoopResult]: For program point L7(line 7) no Hoare annotation was computed. [2020-09-25 07:48:30,172 INFO L268 CegarLoopResult]: For program point L98(line 98) no Hoare annotation was computed. [2020-09-25 07:48:30,172 INFO L268 CegarLoopResult]: For program point L32(lines 32 34) no Hoare annotation was computed. [2020-09-25 07:48:30,172 INFO L268 CegarLoopResult]: For program point L24(line 24) no Hoare annotation was computed. [2020-09-25 07:48:30,173 INFO L268 CegarLoopResult]: For program point L24-1(line 24) no Hoare annotation was computed. [2020-09-25 07:48:30,173 INFO L268 CegarLoopResult]: For program point L24-2(line 24) no Hoare annotation was computed. [2020-09-25 07:48:30,173 INFO L268 CegarLoopResult]: For program point L82(line 82) no Hoare annotation was computed. [2020-09-25 07:48:30,173 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-25 07:48:30,173 INFO L268 CegarLoopResult]: For program point L107(line 107) no Hoare annotation was computed. [2020-09-25 07:48:30,173 INFO L268 CegarLoopResult]: For program point L41(line 41) no Hoare annotation was computed. [2020-09-25 07:48:30,173 INFO L268 CegarLoopResult]: For program point L91-1(lines 30 116) no Hoare annotation was computed. [2020-09-25 07:48:30,174 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-09-25 07:48:30,174 INFO L268 CegarLoopResult]: For program point L83(line 83) no Hoare annotation was computed. [2020-09-25 07:48:30,174 INFO L268 CegarLoopResult]: For program point L108(line 108) no Hoare annotation was computed. [2020-09-25 07:48:30,175 INFO L268 CegarLoopResult]: For program point L75-1(lines 30 116) no Hoare annotation was computed. [2020-09-25 07:48:30,175 INFO L268 CegarLoopResult]: For program point L9(line 9) no Hoare annotation was computed. [2020-09-25 07:48:30,176 INFO L268 CegarLoopResult]: For program point L9-1(line 9) no Hoare annotation was computed. [2020-09-25 07:48:30,176 INFO L268 CegarLoopResult]: For program point L9-2(line 9) no Hoare annotation was computed. [2020-09-25 07:48:30,176 INFO L268 CegarLoopResult]: For program point L67-1(lines 30 116) no Hoare annotation was computed. [2020-09-25 07:48:30,176 INFO L268 CegarLoopResult]: For program point L92(line 92) no Hoare annotation was computed. [2020-09-25 07:48:30,177 INFO L268 CegarLoopResult]: For program point L59-1(lines 30 116) no Hoare annotation was computed. [2020-09-25 07:48:30,177 INFO L271 CegarLoopResult]: At program point L117(lines 5 121) the Hoare annotation is: true [2020-09-25 07:48:30,177 INFO L268 CegarLoopResult]: For program point L51(lines 51 53) no Hoare annotation was computed. [2020-09-25 07:48:30,179 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-09-25 07:48:30,180 INFO L268 CegarLoopResult]: For program point L18-1(line 18) no Hoare annotation was computed. [2020-09-25 07:48:30,180 INFO L268 CegarLoopResult]: For program point L51-2(lines 30 116) no Hoare annotation was computed. [2020-09-25 07:48:30,180 INFO L268 CegarLoopResult]: For program point L18-2(line 18) no Hoare annotation was computed. [2020-09-25 07:48:30,180 INFO L268 CegarLoopResult]: For program point L76(line 76) no Hoare annotation was computed. [2020-09-25 07:48:30,180 INFO L268 CegarLoopResult]: For program point L43(line 43) no Hoare annotation was computed. [2020-09-25 07:48:30,180 INFO L268 CegarLoopResult]: For program point L10(line 10) no Hoare annotation was computed. [2020-09-25 07:48:30,180 INFO L268 CegarLoopResult]: For program point L68(line 68) no Hoare annotation was computed. [2020-09-25 07:48:30,181 INFO L268 CegarLoopResult]: For program point L101-1(lines 30 116) no Hoare annotation was computed. [2020-09-25 07:48:30,181 INFO L268 CegarLoopResult]: For program point L35(line 35) no Hoare annotation was computed. [2020-09-25 07:48:30,205 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 07:48:30 BoogieIcfgContainer [2020-09-25 07:48:30,205 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 07:48:30,210 INFO L168 Benchmark]: Toolchain (without parser) took 4720.27 ms. Allocated memory was 142.1 MB in the beginning and 294.6 MB in the end (delta: 152.6 MB). Free memory was 102.9 MB in the beginning and 229.4 MB in the end (delta: -126.5 MB). Peak memory consumption was 26.1 MB. Max. memory is 7.1 GB. [2020-09-25 07:48:30,212 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 142.1 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-09-25 07:48:30,214 INFO L168 Benchmark]: CACSL2BoogieTranslator took 327.38 ms. Allocated memory is still 142.1 MB. Free memory was 102.3 MB in the beginning and 92.1 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2020-09-25 07:48:30,225 INFO L168 Benchmark]: Boogie Preprocessor took 135.22 ms. Allocated memory was 142.1 MB in the beginning and 203.4 MB in the end (delta: 61.3 MB). Free memory was 92.1 MB in the beginning and 181.5 MB in the end (delta: -89.4 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-09-25 07:48:30,226 INFO L168 Benchmark]: RCFGBuilder took 482.84 ms. Allocated memory is still 203.4 MB. Free memory was 181.5 MB in the beginning and 160.9 MB in the end (delta: 20.5 MB). Peak memory consumption was 20.5 MB. Max. memory is 7.1 GB. [2020-09-25 07:48:30,226 INFO L168 Benchmark]: TraceAbstraction took 3761.26 ms. Allocated memory was 203.4 MB in the beginning and 294.6 MB in the end (delta: 91.2 MB). Free memory was 160.3 MB in the beginning and 229.4 MB in the end (delta: -69.2 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. [2020-09-25 07:48:30,232 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 142.1 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 327.38 ms. Allocated memory is still 142.1 MB. Free memory was 102.3 MB in the beginning and 92.1 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 135.22 ms. Allocated memory was 142.1 MB in the beginning and 203.4 MB in the end (delta: 61.3 MB). Free memory was 92.1 MB in the beginning and 181.5 MB in the end (delta: -89.4 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 482.84 ms. Allocated memory is still 203.4 MB. Free memory was 181.5 MB in the beginning and 160.9 MB in the end (delta: 20.5 MB). Peak memory consumption was 20.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3761.26 ms. Allocated memory was 203.4 MB in the beginning and 294.6 MB in the end (delta: 91.2 MB). Free memory was 160.3 MB in the beginning and 229.4 MB in the end (delta: -69.2 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 119]: 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: 30]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 88 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.5s, OverallIterations: 14, TraceHistogramMax: 1, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1813 SDtfs, 648 SDslu, 1281 SDs, 0 SdLazy, 69 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 70 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3635occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 14 MinimizatonAttempts, 1022 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 137 NumberOfFragments, 7 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 819 NumberOfCodeBlocks, 819 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 805 ConstructedInterpolants, 0 QuantifiedInterpolants, 58429 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...