/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.5 --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_6.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 14:33:53,546 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 14:33:53,553 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 14:33:53,592 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 14:33:53,592 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 14:33:53,601 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 14:33:53,604 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 14:33:53,608 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 14:33:53,610 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 14:33:53,613 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 14:33:53,614 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 14:33:53,615 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 14:33:53,616 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 14:33:53,618 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 14:33:53,622 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 14:33:53,624 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 14:33:53,625 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 14:33:53,627 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 14:33:53,628 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 14:33:53,637 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 14:33:53,640 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 14:33:53,641 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 14:33:53,643 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 14:33:53,644 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 14:33:53,661 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 14:33:53,661 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 14:33:53,662 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 14:33:53,663 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 14:33:53,663 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 14:33:53,664 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 14:33:53,664 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 14:33:53,665 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 14:33:53,666 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 14:33:53,672 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 14:33:53,673 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 14:33:53,674 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 14:33:53,674 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 14:33:53,675 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 14:33:53,676 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 14:33:53,677 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 14:33:53,678 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 14:33:53,679 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 14:33:53,723 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 14:33:53,723 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 14:33:53,725 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 14:33:53,725 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 14:33:53,725 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 14:33:53,726 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 14:33:53,726 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 14:33:53,726 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 14:33:53,726 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 14:33:53,727 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 14:33:53,727 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 14:33:53,727 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 14:33:53,727 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 14:33:53,727 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 14:33:53,728 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 14:33:53,728 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 14:33:53,728 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 14:33:53,728 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 14:33:53,728 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 14:33:53,729 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 14:33:53,729 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 14:33:53,729 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:33:53,729 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 14:33:53,729 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 14:33:53,730 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 14:33:53,730 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 14:33:53,730 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 14:33:53,730 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 14:33:53,730 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 14:33:53,731 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; [2020-09-25 14:33:54,245 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 14:33:54,265 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 14:33:54,270 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 14:33:54,271 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 14:33:54,272 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 14:33:54,273 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/locks/test_locks_6.c [2020-09-25 14:33:54,368 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1d0f699c2/28e29d0b912842e7b36467ca782606d9/FLAGee3a2cff8 [2020-09-25 14:33:54,920 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 14:33:54,921 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/locks/test_locks_6.c [2020-09-25 14:33:54,931 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1d0f699c2/28e29d0b912842e7b36467ca782606d9/FLAGee3a2cff8 [2020-09-25 14:33:55,264 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1d0f699c2/28e29d0b912842e7b36467ca782606d9 [2020-09-25 14:33:55,280 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 14:33:55,287 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 14:33:55,288 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 14:33:55,288 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 14:33:55,292 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 14:33:55,294 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:33:55" (1/1) ... [2020-09-25 14:33:55,298 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3699edcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:33:55, skipping insertion in model container [2020-09-25 14:33:55,299 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:33:55" (1/1) ... [2020-09-25 14:33:55,309 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 14:33:55,340 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 14:33:55,608 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:33:55,617 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 14:33:55,672 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:33:55,692 INFO L208 MainTranslator]: Completed translation [2020-09-25 14:33:55,694 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:33:55 WrapperNode [2020-09-25 14:33:55,694 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 14:33:55,695 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 14:33:55,695 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 14:33:55,695 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 14:33:55,851 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:33:55" (1/1) ... [2020-09-25 14:33:55,853 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:33:55" (1/1) ... [2020-09-25 14:33:55,861 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:33:55" (1/1) ... [2020-09-25 14:33:55,861 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:33:55" (1/1) ... [2020-09-25 14:33:55,868 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:33:55" (1/1) ... [2020-09-25 14:33:55,877 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:33:55" (1/1) ... [2020-09-25 14:33:55,878 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:33:55" (1/1) ... [2020-09-25 14:33:55,881 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 14:33:55,882 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 14:33:55,882 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 14:33:55,882 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 14:33:55,883 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:33:55" (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 14:33:55,970 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 14:33:55,970 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 14:33:55,971 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 14:33:55,971 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 14:33:55,971 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 14:33:55,971 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 14:33:55,971 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 14:33:55,971 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 14:33:56,310 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 14:33:56,310 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 14:33:56,317 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:33:56 BoogieIcfgContainer [2020-09-25 14:33:56,317 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 14:33:56,318 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 14:33:56,319 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 14:33:56,322 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 14:33:56,323 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:33:55" (1/3) ... [2020-09-25 14:33:56,324 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2231332 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:33:56, skipping insertion in model container [2020-09-25 14:33:56,324 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:33:55" (2/3) ... [2020-09-25 14:33:56,324 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2231332 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:33:56, skipping insertion in model container [2020-09-25 14:33:56,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:33:56" (3/3) ... [2020-09-25 14:33:56,327 INFO L109 eAbstractionObserver]: Analyzing ICFG test_locks_6.c [2020-09-25 14:33:56,345 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 14:33:56,368 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 14:33:56,400 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 14:33:56,433 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 14:33:56,433 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 14:33:56,433 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 14:33:56,433 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 14:33:56,434 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 14:33:56,434 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 14:33:56,434 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 14:33:56,434 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 14:33:56,460 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states. [2020-09-25 14:33:56,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-09-25 14:33:56,470 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:33:56,471 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] [2020-09-25 14:33:56,472 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:33:56,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:33:56,478 INFO L82 PathProgramCache]: Analyzing trace with hash 1400694048, now seen corresponding path program 1 times [2020-09-25 14:33:56,487 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:33:56,487 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [197130116] [2020-09-25 14:33:56,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:33:56,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:56,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:56,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:56,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 14:33:56,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:33:56,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-09-25 14:33:56,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:56,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:56,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:33:56,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-09-25 14:33:56,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:33:56,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 14:33:56,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:33:56,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:56,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:56,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:56,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:33:56,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:33:56,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 14:33:56,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:56,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:56,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:33:56,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:33:56,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:33:56,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:33:56,982 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 14:33:56,983 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [197130116] [2020-09-25 14:33:56,986 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:33:56,986 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 14:33:56,988 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563960901] [2020-09-25 14:33:56,994 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 14:33:56,995 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:33:57,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 14:33:57,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 14:33:57,017 INFO L87 Difference]: Start difference. First operand 78 states. Second operand 3 states. [2020-09-25 14:33:57,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:33:57,091 INFO L93 Difference]: Finished difference Result 169 states and 229 transitions. [2020-09-25 14:33:57,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 14:33:57,093 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 49 [2020-09-25 14:33:57,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:33:57,111 INFO L225 Difference]: With dead ends: 169 [2020-09-25 14:33:57,112 INFO L226 Difference]: Without dead ends: 112 [2020-09-25 14:33:57,117 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 14:33:57,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-09-25 14:33:57,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 110. [2020-09-25 14:33:57,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-09-25 14:33:57,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 142 transitions. [2020-09-25 14:33:57,174 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 142 transitions. Word has length 49 [2020-09-25 14:33:57,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:33:57,175 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 142 transitions. [2020-09-25 14:33:57,175 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 14:33:57,175 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 142 transitions. [2020-09-25 14:33:57,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-09-25 14:33:57,177 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:33:57,177 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] [2020-09-25 14:33:57,178 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 14:33:57,178 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:33:57,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:33:57,179 INFO L82 PathProgramCache]: Analyzing trace with hash -1290717684, now seen corresponding path program 1 times [2020-09-25 14:33:57,179 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:33:57,179 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1525693072] [2020-09-25 14:33:57,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:33:57,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:57,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:57,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:57,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-09-25 14:33:57,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:33:57,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-09-25 14:33:57,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:57,280 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:57,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:33:57,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-09-25 14:33:57,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:33:57,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:33:57,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:33:57,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:57,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:57,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:57,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:33:57,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:33:57,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 14:33:57,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:57,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:57,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:33:57,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:33:57,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:33:57,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:33:57,354 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 14:33:57,354 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1525693072] [2020-09-25 14:33:57,355 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:33:57,355 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 14:33:57,356 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934360285] [2020-09-25 14:33:57,360 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 14:33:57,360 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:33:57,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 14:33:57,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 14:33:57,362 INFO L87 Difference]: Start difference. First operand 110 states and 142 transitions. Second operand 3 states. [2020-09-25 14:33:57,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:33:57,402 INFO L93 Difference]: Finished difference Result 135 states and 175 transitions. [2020-09-25 14:33:57,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 14:33:57,402 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 50 [2020-09-25 14:33:57,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:33:57,407 INFO L225 Difference]: With dead ends: 135 [2020-09-25 14:33:57,407 INFO L226 Difference]: Without dead ends: 133 [2020-09-25 14:33:57,409 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 14:33:57,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-09-25 14:33:57,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 110. [2020-09-25 14:33:57,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-09-25 14:33:57,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 141 transitions. [2020-09-25 14:33:57,423 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 141 transitions. Word has length 50 [2020-09-25 14:33:57,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:33:57,424 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 141 transitions. [2020-09-25 14:33:57,424 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 14:33:57,424 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 141 transitions. [2020-09-25 14:33:57,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-09-25 14:33:57,426 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:33:57,426 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] [2020-09-25 14:33:57,427 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 14:33:57,427 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:33:57,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:33:57,427 INFO L82 PathProgramCache]: Analyzing trace with hash 472087846, now seen corresponding path program 1 times [2020-09-25 14:33:57,428 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:33:57,428 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1151575322] [2020-09-25 14:33:57,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:33:57,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:57,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:57,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:57,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-09-25 14:33:57,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:33:57,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-09-25 14:33:57,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:57,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:57,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:33:57,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-09-25 14:33:57,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:33:57,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:33:57,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:33:57,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:57,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:57,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:57,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:33:57,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:33:57,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 14:33:57,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:57,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:57,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:33:57,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:33:57,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:33:57,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:33:57,609 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 14:33:57,609 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1151575322] [2020-09-25 14:33:57,609 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:33:57,610 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 14:33:57,610 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210754665] [2020-09-25 14:33:57,610 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 14:33:57,611 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:33:57,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 14:33:57,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 14:33:57,612 INFO L87 Difference]: Start difference. First operand 110 states and 141 transitions. Second operand 3 states. [2020-09-25 14:33:57,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:33:57,643 INFO L93 Difference]: Finished difference Result 266 states and 357 transitions. [2020-09-25 14:33:57,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 14:33:57,644 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 50 [2020-09-25 14:33:57,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:33:57,647 INFO L225 Difference]: With dead ends: 266 [2020-09-25 14:33:57,647 INFO L226 Difference]: Without dead ends: 185 [2020-09-25 14:33:57,648 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 14:33:57,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-09-25 14:33:57,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 183. [2020-09-25 14:33:57,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2020-09-25 14:33:57,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 240 transitions. [2020-09-25 14:33:57,667 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 240 transitions. Word has length 50 [2020-09-25 14:33:57,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:33:57,668 INFO L479 AbstractCegarLoop]: Abstraction has 183 states and 240 transitions. [2020-09-25 14:33:57,668 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 14:33:57,668 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 240 transitions. [2020-09-25 14:33:57,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 14:33:57,670 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:33:57,671 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] [2020-09-25 14:33:57,671 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 14:33:57,671 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:33:57,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:33:57,672 INFO L82 PathProgramCache]: Analyzing trace with hash 1750067028, now seen corresponding path program 1 times [2020-09-25 14:33:57,672 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:33:57,672 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [737079046] [2020-09-25 14:33:57,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:33:57,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:57,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:57,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:57,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-09-25 14:33:57,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:33:57,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-09-25 14:33:57,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:57,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:57,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:33:57,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-09-25 14:33:57,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:33:57,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:33:57,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:33:57,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:57,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:57,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:57,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:33:57,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:33:57,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 14:33:57,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:57,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:57,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:33:57,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:33:57,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:33:57,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:33:57,800 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 14:33:57,802 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [737079046] [2020-09-25 14:33:57,802 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:33:57,802 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 14:33:57,803 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594821144] [2020-09-25 14:33:57,803 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 14:33:57,804 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:33:57,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 14:33:57,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 14:33:57,804 INFO L87 Difference]: Start difference. First operand 183 states and 240 transitions. Second operand 3 states. [2020-09-25 14:33:57,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:33:57,847 INFO L93 Difference]: Finished difference Result 479 states and 646 transitions. [2020-09-25 14:33:57,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 14:33:57,848 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 51 [2020-09-25 14:33:57,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:33:57,854 INFO L225 Difference]: With dead ends: 479 [2020-09-25 14:33:57,854 INFO L226 Difference]: Without dead ends: 325 [2020-09-25 14:33:57,856 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 14:33:57,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2020-09-25 14:33:57,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 323. [2020-09-25 14:33:57,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2020-09-25 14:33:57,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 426 transitions. [2020-09-25 14:33:57,914 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 426 transitions. Word has length 51 [2020-09-25 14:33:57,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:33:57,914 INFO L479 AbstractCegarLoop]: Abstraction has 323 states and 426 transitions. [2020-09-25 14:33:57,915 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 14:33:57,915 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 426 transitions. [2020-09-25 14:33:57,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 14:33:57,917 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:33:57,917 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] [2020-09-25 14:33:57,918 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 14:33:57,918 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:33:57,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:33:57,918 INFO L82 PathProgramCache]: Analyzing trace with hash -17356107, now seen corresponding path program 1 times [2020-09-25 14:33:57,919 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:33:57,919 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [994938336] [2020-09-25 14:33:57,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:33:57,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:57,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:57,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:57,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-09-25 14:33:57,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:33:57,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-09-25 14:33:57,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:57,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:57,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:33:57,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-09-25 14:33:57,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:33:57,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:33:58,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:33:58,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:58,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:58,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:58,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:33:58,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:33:58,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 14:33:58,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:58,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:58,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:33:58,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:33:58,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:33:58,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:33:58,009 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 14:33:58,010 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [994938336] [2020-09-25 14:33:58,010 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:33:58,010 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 14:33:58,010 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199994335] [2020-09-25 14:33:58,011 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 14:33:58,011 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:33:58,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 14:33:58,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 14:33:58,012 INFO L87 Difference]: Start difference. First operand 323 states and 426 transitions. Second operand 3 states. [2020-09-25 14:33:58,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:33:58,031 INFO L93 Difference]: Finished difference Result 399 states and 528 transitions. [2020-09-25 14:33:58,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 14:33:58,032 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 51 [2020-09-25 14:33:58,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:33:58,035 INFO L225 Difference]: With dead ends: 399 [2020-09-25 14:33:58,035 INFO L226 Difference]: Without dead ends: 397 [2020-09-25 14:33:58,036 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 14:33:58,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2020-09-25 14:33:58,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 323. [2020-09-25 14:33:58,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2020-09-25 14:33:58,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 422 transitions. [2020-09-25 14:33:58,072 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 422 transitions. Word has length 51 [2020-09-25 14:33:58,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:33:58,073 INFO L479 AbstractCegarLoop]: Abstraction has 323 states and 422 transitions. [2020-09-25 14:33:58,073 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 14:33:58,073 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 422 transitions. [2020-09-25 14:33:58,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-25 14:33:58,075 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:33:58,076 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] [2020-09-25 14:33:58,082 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 14:33:58,082 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:33:58,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:33:58,083 INFO L82 PathProgramCache]: Analyzing trace with hash 802147488, now seen corresponding path program 1 times [2020-09-25 14:33:58,083 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:33:58,083 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1635904272] [2020-09-25 14:33:58,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:33:58,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:58,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:58,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:58,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-25 14:33:58,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:33:58,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-09-25 14:33:58,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:58,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:58,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:33:58,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-09-25 14:33:58,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:33:58,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:33:58,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:33:58,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:58,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:58,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:58,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:33:58,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:33:58,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 14:33:58,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:58,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:58,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:33:58,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:33:58,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:33:58,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:33:58,214 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 14:33:58,215 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1635904272] [2020-09-25 14:33:58,215 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:33:58,215 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 14:33:58,216 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360497555] [2020-09-25 14:33:58,216 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 14:33:58,216 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:33:58,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 14:33:58,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 14:33:58,217 INFO L87 Difference]: Start difference. First operand 323 states and 422 transitions. Second operand 3 states. [2020-09-25 14:33:58,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:33:58,236 INFO L93 Difference]: Finished difference Result 395 states and 516 transitions. [2020-09-25 14:33:58,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 14:33:58,236 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-09-25 14:33:58,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:33:58,239 INFO L225 Difference]: With dead ends: 395 [2020-09-25 14:33:58,239 INFO L226 Difference]: Without dead ends: 393 [2020-09-25 14:33:58,240 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 14:33:58,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2020-09-25 14:33:58,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 323. [2020-09-25 14:33:58,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2020-09-25 14:33:58,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 418 transitions. [2020-09-25 14:33:58,255 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 418 transitions. Word has length 52 [2020-09-25 14:33:58,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:33:58,255 INFO L479 AbstractCegarLoop]: Abstraction has 323 states and 418 transitions. [2020-09-25 14:33:58,255 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 14:33:58,255 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 418 transitions. [2020-09-25 14:33:58,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-25 14:33:58,257 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:33:58,257 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] [2020-09-25 14:33:58,257 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 14:33:58,257 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:33:58,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:33:58,258 INFO L82 PathProgramCache]: Analyzing trace with hash -1582250918, now seen corresponding path program 1 times [2020-09-25 14:33:58,258 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:33:58,258 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1698555854] [2020-09-25 14:33:58,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:33:58,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:58,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:58,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:58,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-25 14:33:58,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:33:58,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-25 14:33:58,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:58,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:58,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:33:58,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-09-25 14:33:58,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:33:58,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:33:58,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:33:58,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:58,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:58,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:58,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:33:58,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:33:58,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 14:33:58,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:58,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:58,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:33:58,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:33:58,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:33:58,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:33:58,340 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 14:33:58,341 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1698555854] [2020-09-25 14:33:58,341 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:33:58,341 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 14:33:58,341 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569533119] [2020-09-25 14:33:58,342 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 14:33:58,342 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:33:58,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 14:33:58,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 14:33:58,343 INFO L87 Difference]: Start difference. First operand 323 states and 418 transitions. Second operand 3 states. [2020-09-25 14:33:58,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:33:58,372 INFO L93 Difference]: Finished difference Result 887 states and 1164 transitions. [2020-09-25 14:33:58,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 14:33:58,373 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-09-25 14:33:58,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:33:58,376 INFO L225 Difference]: With dead ends: 887 [2020-09-25 14:33:58,376 INFO L226 Difference]: Without dead ends: 593 [2020-09-25 14:33:58,378 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 14:33:58,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2020-09-25 14:33:58,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 591. [2020-09-25 14:33:58,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 591 states. [2020-09-25 14:33:58,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 758 transitions. [2020-09-25 14:33:58,399 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 758 transitions. Word has length 52 [2020-09-25 14:33:58,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:33:58,400 INFO L479 AbstractCegarLoop]: Abstraction has 591 states and 758 transitions. [2020-09-25 14:33:58,400 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 14:33:58,400 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 758 transitions. [2020-09-25 14:33:58,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-25 14:33:58,402 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:33:58,402 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:33:58,402 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 14:33:58,403 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:33:58,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:33:58,403 INFO L82 PathProgramCache]: Analyzing trace with hash 436955529, now seen corresponding path program 1 times [2020-09-25 14:33:58,403 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:33:58,404 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [364659831] [2020-09-25 14:33:58,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:33:58,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:58,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:58,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:58,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-25 14:33:58,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:33:58,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-25 14:33:58,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:58,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:58,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:33:58,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-09-25 14:33:58,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:33:58,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:33:58,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:33:58,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:58,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:58,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:58,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:33:58,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:33:58,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 14:33:58,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:58,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:58,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:33:58,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:33:58,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:33:58,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:33:58,483 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 14:33:58,483 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [364659831] [2020-09-25 14:33:58,483 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:33:58,484 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 14:33:58,484 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166845378] [2020-09-25 14:33:58,484 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 14:33:58,485 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:33:58,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 14:33:58,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 14:33:58,485 INFO L87 Difference]: Start difference. First operand 591 states and 758 transitions. Second operand 3 states. [2020-09-25 14:33:58,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:33:58,508 INFO L93 Difference]: Finished difference Result 715 states and 912 transitions. [2020-09-25 14:33:58,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 14:33:58,509 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 53 [2020-09-25 14:33:58,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:33:58,513 INFO L225 Difference]: With dead ends: 715 [2020-09-25 14:33:58,513 INFO L226 Difference]: Without dead ends: 713 [2020-09-25 14:33:58,514 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 14:33:58,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2020-09-25 14:33:58,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 591. [2020-09-25 14:33:58,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 591 states. [2020-09-25 14:33:58,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 750 transitions. [2020-09-25 14:33:58,535 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 750 transitions. Word has length 53 [2020-09-25 14:33:58,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:33:58,536 INFO L479 AbstractCegarLoop]: Abstraction has 591 states and 750 transitions. [2020-09-25 14:33:58,536 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 14:33:58,536 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 750 transitions. [2020-09-25 14:33:58,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-25 14:33:58,538 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:33:58,538 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] [2020-09-25 14:33:58,538 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 14:33:58,539 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:33:58,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:33:58,550 INFO L82 PathProgramCache]: Analyzing trace with hash -1804891768, now seen corresponding path program 1 times [2020-09-25 14:33:58,550 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:33:58,550 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [628409041] [2020-09-25 14:33:58,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:33:58,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:58,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:58,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:58,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-25 14:33:58,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:33:58,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-25 14:33:58,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:58,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:58,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:33:58,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-09-25 14:33:58,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:33:58,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:33:58,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:33:58,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:58,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:58,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:58,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:33:58,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:33:58,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 14:33:58,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:58,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:58,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:33:58,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:33:58,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:33:58,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:33:58,644 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 14:33:58,645 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [628409041] [2020-09-25 14:33:58,645 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:33:58,645 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 14:33:58,646 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691677354] [2020-09-25 14:33:58,646 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 14:33:58,646 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:33:58,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 14:33:58,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 14:33:58,647 INFO L87 Difference]: Start difference. First operand 591 states and 750 transitions. Second operand 3 states. [2020-09-25 14:33:58,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:33:58,674 INFO L93 Difference]: Finished difference Result 1667 states and 2128 transitions. [2020-09-25 14:33:58,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 14:33:58,675 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 53 [2020-09-25 14:33:58,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:33:58,680 INFO L225 Difference]: With dead ends: 1667 [2020-09-25 14:33:58,681 INFO L226 Difference]: Without dead ends: 1105 [2020-09-25 14:33:58,682 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 14:33:58,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1105 states. [2020-09-25 14:33:58,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1105 to 1103. [2020-09-25 14:33:58,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1103 states. [2020-09-25 14:33:58,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1103 states to 1103 states and 1374 transitions. [2020-09-25 14:33:58,712 INFO L78 Accepts]: Start accepts. Automaton has 1103 states and 1374 transitions. Word has length 53 [2020-09-25 14:33:58,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:33:58,712 INFO L479 AbstractCegarLoop]: Abstraction has 1103 states and 1374 transitions. [2020-09-25 14:33:58,712 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 14:33:58,713 INFO L276 IsEmpty]: Start isEmpty. Operand 1103 states and 1374 transitions. [2020-09-25 14:33:58,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-25 14:33:58,714 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:33:58,714 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] [2020-09-25 14:33:58,715 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 14:33:58,715 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:33:58,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:33:58,715 INFO L82 PathProgramCache]: Analyzing trace with hash 2000907060, now seen corresponding path program 1 times [2020-09-25 14:33:58,715 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:33:58,716 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1389227562] [2020-09-25 14:33:58,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:33:58,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:58,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:58,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:58,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 14:33:58,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:33:58,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-25 14:33:58,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:58,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:58,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:33:58,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-09-25 14:33:58,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:33:58,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:33:58,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:33:58,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:58,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:58,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:58,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:33:58,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:33:58,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 14:33:58,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:58,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:58,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:33:58,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:33:58,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:33:58,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:33:58,792 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 14:33:58,792 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1389227562] [2020-09-25 14:33:58,792 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:33:58,793 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 14:33:58,793 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324994351] [2020-09-25 14:33:58,793 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 14:33:58,793 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:33:58,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 14:33:58,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 14:33:58,794 INFO L87 Difference]: Start difference. First operand 1103 states and 1374 transitions. Second operand 3 states. [2020-09-25 14:33:58,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:33:58,816 INFO L93 Difference]: Finished difference Result 1315 states and 1616 transitions. [2020-09-25 14:33:58,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 14:33:58,817 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 54 [2020-09-25 14:33:58,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:33:58,823 INFO L225 Difference]: With dead ends: 1315 [2020-09-25 14:33:58,823 INFO L226 Difference]: Without dead ends: 1313 [2020-09-25 14:33:58,824 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 14:33:58,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1313 states. [2020-09-25 14:33:58,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1313 to 1103. [2020-09-25 14:33:58,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1103 states. [2020-09-25 14:33:58,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1103 states to 1103 states and 1358 transitions. [2020-09-25 14:33:58,855 INFO L78 Accepts]: Start accepts. Automaton has 1103 states and 1358 transitions. Word has length 54 [2020-09-25 14:33:58,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:33:58,855 INFO L479 AbstractCegarLoop]: Abstraction has 1103 states and 1358 transitions. [2020-09-25 14:33:58,855 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 14:33:58,856 INFO L276 IsEmpty]: Start isEmpty. Operand 1103 states and 1358 transitions. [2020-09-25 14:33:58,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-25 14:33:58,857 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:33:58,857 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] [2020-09-25 14:33:58,857 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 14:33:58,857 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:33:58,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:33:58,858 INFO L82 PathProgramCache]: Analyzing trace with hash -116823154, now seen corresponding path program 1 times [2020-09-25 14:33:58,858 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:33:58,858 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [736367530] [2020-09-25 14:33:58,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:33:58,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:58,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:58,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:58,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 14:33:58,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:33:58,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-25 14:33:58,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:58,909 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:58,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:33:58,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-09-25 14:33:58,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:33:58,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:33:58,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:33:58,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:58,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:58,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:58,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:33:58,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:33:58,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:33:58,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:58,930 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:58,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:33:58,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:33:58,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:33:58,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:33:58,933 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 14:33:58,934 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [736367530] [2020-09-25 14:33:58,934 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:33:58,934 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 14:33:58,934 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102239273] [2020-09-25 14:33:58,935 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 14:33:58,935 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:33:58,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 14:33:58,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 14:33:58,936 INFO L87 Difference]: Start difference. First operand 1103 states and 1358 transitions. Second operand 3 states. [2020-09-25 14:33:58,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:33:58,972 INFO L93 Difference]: Finished difference Result 3153 states and 3887 transitions. [2020-09-25 14:33:58,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 14:33:58,972 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 54 [2020-09-25 14:33:58,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:33:58,978 INFO L225 Difference]: With dead ends: 3153 [2020-09-25 14:33:58,978 INFO L226 Difference]: Without dead ends: 1103 [2020-09-25 14:33:58,981 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 14:33:58,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1103 states. [2020-09-25 14:33:59,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1103 to 1103. [2020-09-25 14:33:59,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1103 states. [2020-09-25 14:33:59,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1103 states to 1103 states and 1294 transitions. [2020-09-25 14:33:59,009 INFO L78 Accepts]: Start accepts. Automaton has 1103 states and 1294 transitions. Word has length 54 [2020-09-25 14:33:59,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:33:59,010 INFO L479 AbstractCegarLoop]: Abstraction has 1103 states and 1294 transitions. [2020-09-25 14:33:59,010 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 14:33:59,010 INFO L276 IsEmpty]: Start isEmpty. Operand 1103 states and 1294 transitions. [2020-09-25 14:33:59,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-09-25 14:33:59,011 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:33:59,011 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 14:33:59,012 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 14:33:59,012 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:33:59,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:33:59,012 INFO L82 PathProgramCache]: Analyzing trace with hash -1056202659, now seen corresponding path program 1 times [2020-09-25 14:33:59,012 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:33:59,013 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [987613781] [2020-09-25 14:33:59,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:33:59,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:59,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:59,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:59,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-09-25 14:33:59,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:33:59,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-25 14:33:59,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:59,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:59,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:33:59,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-09-25 14:33:59,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:33:59,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:33:59,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:33:59,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:59,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:59,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:59,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:33:59,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:33:59,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:33:59,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:59,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:59,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:33:59,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:33:59,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:33:59,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:33:59,084 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 14:33:59,084 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [987613781] [2020-09-25 14:33:59,084 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:33:59,084 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 14:33:59,085 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741143999] [2020-09-25 14:33:59,085 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 14:33:59,085 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:33:59,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 14:33:59,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 14:33:59,086 INFO L87 Difference]: Start difference. First operand 1103 states and 1294 transitions. Second operand 3 states. [2020-09-25 14:33:59,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:33:59,103 INFO L93 Difference]: Finished difference Result 1103 states and 1294 transitions. [2020-09-25 14:33:59,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 14:33:59,104 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 55 [2020-09-25 14:33:59,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:33:59,104 INFO L225 Difference]: With dead ends: 1103 [2020-09-25 14:33:59,105 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 14:33:59,106 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 14:33:59,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 14:33:59,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 14:33:59,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 14:33:59,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 14:33:59,108 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 55 [2020-09-25 14:33:59,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:33:59,108 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 14:33:59,108 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 14:33:59,108 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 14:33:59,108 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 14:33:59,108 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-25 14:33:59,111 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 14:33:59,136 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-25 14:33:59,137 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 14:33:59,137 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 14:33:59,137 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-25 14:33:59,137 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 14:33:59,137 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 14:33:59,137 INFO L268 CegarLoopResult]: For program point L93(line 93) no Hoare annotation was computed. [2020-09-25 14:33:59,137 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 4 107) no Hoare annotation was computed. [2020-09-25 14:33:59,138 INFO L268 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-09-25 14:33:59,138 INFO L268 CegarLoopResult]: For program point L77-1(lines 27 102) no Hoare annotation was computed. [2020-09-25 14:33:59,138 INFO L268 CegarLoopResult]: For program point L36(line 36) no Hoare annotation was computed. [2020-09-25 14:33:59,138 INFO L268 CegarLoopResult]: For program point L94(line 94) no Hoare annotation was computed. [2020-09-25 14:33:59,138 INFO L268 CegarLoopResult]: For program point L28(line 28) no Hoare annotation was computed. [2020-09-25 14:33:59,138 INFO L268 CegarLoopResult]: For program point L28-1(line 28) no Hoare annotation was computed. [2020-09-25 14:33:59,138 INFO L268 CegarLoopResult]: For program point L28-2(line 28) no Hoare annotation was computed. [2020-09-25 14:33:59,139 INFO L268 CegarLoopResult]: For program point L78(line 78) no Hoare annotation was computed. [2020-09-25 14:33:59,139 INFO L268 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-09-25 14:33:59,139 INFO L268 CegarLoopResult]: For program point L12-1(line 12) no Hoare annotation was computed. [2020-09-25 14:33:59,139 INFO L268 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-09-25 14:33:59,139 INFO L271 CegarLoopResult]: At program point L103(lines 5 107) the Hoare annotation is: true [2020-09-25 14:33:59,139 INFO L268 CegarLoopResult]: For program point L29(lines 29 31) no Hoare annotation was computed. [2020-09-25 14:33:59,139 INFO L268 CegarLoopResult]: For program point L62-1(lines 27 102) no Hoare annotation was computed. [2020-09-25 14:33:59,140 INFO L268 CegarLoopResult]: For program point L87-1(lines 27 102) no Hoare annotation was computed. [2020-09-25 14:33:59,140 INFO L268 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed. [2020-09-25 14:33:59,140 INFO L268 CegarLoopResult]: For program point L54-1(lines 27 102) no Hoare annotation was computed. [2020-09-25 14:33:59,140 INFO L268 CegarLoopResult]: For program point L21-1(line 21) no Hoare annotation was computed. [2020-09-25 14:33:59,140 INFO L268 CegarLoopResult]: For program point L21-2(line 21) no Hoare annotation was computed. [2020-09-25 14:33:59,140 INFO L268 CegarLoopResult]: For program point L79(line 79) no Hoare annotation was computed. [2020-09-25 14:33:59,140 INFO L268 CegarLoopResult]: For program point L46(lines 46 48) no Hoare annotation was computed. [2020-09-25 14:33:59,141 INFO L268 CegarLoopResult]: For program point L13(line 13) no Hoare annotation was computed. [2020-09-25 14:33:59,141 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 4 107) no Hoare annotation was computed. [2020-09-25 14:33:59,141 INFO L268 CegarLoopResult]: For program point L46-2(lines 27 102) no Hoare annotation was computed. [2020-09-25 14:33:59,141 INFO L268 CegarLoopResult]: For program point L38(line 38) no Hoare annotation was computed. [2020-09-25 14:33:59,141 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 105) no Hoare annotation was computed. [2020-09-25 14:33:59,141 INFO L268 CegarLoopResult]: For program point L63(line 63) no Hoare annotation was computed. [2020-09-25 14:33:59,142 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 4 107) the Hoare annotation is: true [2020-09-25 14:33:59,142 INFO L268 CegarLoopResult]: For program point L88(line 88) no Hoare annotation was computed. [2020-09-25 14:33:59,158 INFO L268 CegarLoopResult]: For program point L55(line 55) no Hoare annotation was computed. [2020-09-25 14:33:59,158 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-09-25 14:33:59,158 INFO L268 CegarLoopResult]: For program point L47(line 47) no Hoare annotation was computed. [2020-09-25 14:33:59,159 INFO L268 CegarLoopResult]: For program point L72-1(lines 27 102) no Hoare annotation was computed. [2020-09-25 14:33:59,159 INFO L268 CegarLoopResult]: For program point L6(line 6) no Hoare annotation was computed. [2020-09-25 14:33:59,159 INFO L268 CegarLoopResult]: For program point L6-1(line 6) no Hoare annotation was computed. [2020-09-25 14:33:59,159 INFO L271 CegarLoopResult]: At program point L97-1(lines 27 102) the Hoare annotation is: true [2020-09-25 14:33:59,159 INFO L268 CegarLoopResult]: For program point L89(line 89) no Hoare annotation was computed. [2020-09-25 14:33:59,159 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-09-25 14:33:59,159 INFO L268 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2020-09-25 14:33:59,159 INFO L268 CegarLoopResult]: For program point L15-2(line 15) no Hoare annotation was computed. [2020-09-25 14:33:59,160 INFO L268 CegarLoopResult]: For program point L106(line 106) no Hoare annotation was computed. [2020-09-25 14:33:59,160 INFO L268 CegarLoopResult]: For program point L73(line 73) no Hoare annotation was computed. [2020-09-25 14:33:59,160 INFO L268 CegarLoopResult]: For program point L40(line 40) no Hoare annotation was computed. [2020-09-25 14:33:59,160 INFO L268 CegarLoopResult]: For program point L7(line 7) no Hoare annotation was computed. [2020-09-25 14:33:59,160 INFO L268 CegarLoopResult]: For program point L98(line 98) no Hoare annotation was computed. [2020-09-25 14:33:59,160 INFO L264 CegarLoopResult]: At program point L98-1(lines 5 107) the Hoare annotation is: false [2020-09-25 14:33:59,160 INFO L268 CegarLoopResult]: For program point L32(line 32) no Hoare annotation was computed. [2020-09-25 14:33:59,161 INFO L268 CegarLoopResult]: For program point L82-1(lines 27 102) no Hoare annotation was computed. [2020-09-25 14:33:59,161 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-25 14:33:59,161 INFO L268 CegarLoopResult]: For program point L74(line 74) no Hoare annotation was computed. [2020-09-25 14:33:59,161 INFO L268 CegarLoopResult]: For program point L99(line 99) no Hoare annotation was computed. [2020-09-25 14:33:59,161 INFO L268 CegarLoopResult]: For program point L66-1(lines 27 102) no Hoare annotation was computed. [2020-09-25 14:33:59,161 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-09-25 14:33:59,161 INFO L268 CegarLoopResult]: For program point L58-1(lines 27 102) no Hoare annotation was computed. [2020-09-25 14:33:59,161 INFO L268 CegarLoopResult]: For program point L83(line 83) no Hoare annotation was computed. [2020-09-25 14:33:59,161 INFO L268 CegarLoopResult]: For program point L50-1(lines 27 102) no Hoare annotation was computed. [2020-09-25 14:33:59,162 INFO L268 CegarLoopResult]: For program point L42(line 42) no Hoare annotation was computed. [2020-09-25 14:33:59,162 INFO L268 CegarLoopResult]: For program point L9(line 9) no Hoare annotation was computed. [2020-09-25 14:33:59,162 INFO L268 CegarLoopResult]: For program point L9-1(line 9) no Hoare annotation was computed. [2020-09-25 14:33:59,162 INFO L268 CegarLoopResult]: For program point L9-2(line 9) no Hoare annotation was computed. [2020-09-25 14:33:59,162 INFO L268 CegarLoopResult]: For program point L67(line 67) no Hoare annotation was computed. [2020-09-25 14:33:59,162 INFO L268 CegarLoopResult]: For program point L34(line 34) no Hoare annotation was computed. [2020-09-25 14:33:59,162 INFO L268 CegarLoopResult]: For program point L59(line 59) no Hoare annotation was computed. [2020-09-25 14:33:59,162 INFO L268 CegarLoopResult]: For program point L92-1(lines 27 102) no Hoare annotation was computed. [2020-09-25 14:33:59,162 INFO L268 CegarLoopResult]: For program point L84(line 84) no Hoare annotation was computed. [2020-09-25 14:33:59,163 INFO L268 CegarLoopResult]: For program point L51(line 51) no Hoare annotation was computed. [2020-09-25 14:33:59,163 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-09-25 14:33:59,163 INFO L268 CegarLoopResult]: For program point L18-1(line 18) no Hoare annotation was computed. [2020-09-25 14:33:59,163 INFO L268 CegarLoopResult]: For program point L18-2(line 18) no Hoare annotation was computed. [2020-09-25 14:33:59,163 INFO L268 CegarLoopResult]: For program point L10(line 10) no Hoare annotation was computed. [2020-09-25 14:33:59,177 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 02:33:59 BoogieIcfgContainer [2020-09-25 14:33:59,177 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 14:33:59,181 INFO L168 Benchmark]: Toolchain (without parser) took 3897.69 ms. Allocated memory was 140.5 MB in the beginning and 244.3 MB in the end (delta: 103.8 MB). Free memory was 103.8 MB in the beginning and 213.4 MB in the end (delta: -109.7 MB). Peak memory consumption was 107.7 MB. Max. memory is 7.1 GB. [2020-09-25 14:33:59,182 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 14:33:59,182 INFO L168 Benchmark]: CACSL2BoogieTranslator took 406.79 ms. Allocated memory is still 140.5 MB. Free memory was 103.3 MB in the beginning and 93.1 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2020-09-25 14:33:59,183 INFO L168 Benchmark]: Boogie Preprocessor took 186.21 ms. Allocated memory was 140.5 MB in the beginning and 207.1 MB in the end (delta: 66.6 MB). Free memory was 93.1 MB in the beginning and 185.2 MB in the end (delta: -92.0 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. [2020-09-25 14:33:59,184 INFO L168 Benchmark]: RCFGBuilder took 435.73 ms. Allocated memory is still 207.1 MB. Free memory was 185.2 MB in the beginning and 165.4 MB in the end (delta: 19.8 MB). Peak memory consumption was 19.8 MB. Max. memory is 7.1 GB. [2020-09-25 14:33:59,185 INFO L168 Benchmark]: TraceAbstraction took 2858.70 ms. Allocated memory was 207.1 MB in the beginning and 244.3 MB in the end (delta: 37.2 MB). Free memory was 165.4 MB in the beginning and 213.4 MB in the end (delta: -48.1 MB). Peak memory consumption was 102.8 MB. Max. memory is 7.1 GB. [2020-09-25 14:33:59,188 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 406.79 ms. Allocated memory is still 140.5 MB. Free memory was 103.3 MB in the beginning and 93.1 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 186.21 ms. Allocated memory was 140.5 MB in the beginning and 207.1 MB in the end (delta: 66.6 MB). Free memory was 93.1 MB in the beginning and 185.2 MB in the end (delta: -92.0 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 435.73 ms. Allocated memory is still 207.1 MB. Free memory was 185.2 MB in the beginning and 165.4 MB in the end (delta: 19.8 MB). Peak memory consumption was 19.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2858.70 ms. Allocated memory was 207.1 MB in the beginning and 244.3 MB in the end (delta: 37.2 MB). Free memory was 165.4 MB in the beginning and 213.4 MB in the end (delta: -48.1 MB). Peak memory consumption was 102.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 105]: 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: 5]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 78 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.6s, OverallIterations: 12, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1351 SDtfs, 477 SDslu, 950 SDs, 0 SdLazy, 59 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 60 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1103occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 12 MinimizatonAttempts, 509 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 73 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, 1.3s InterpolantComputationTime, 624 NumberOfCodeBlocks, 624 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 612 ConstructedInterpolants, 0 QuantifiedInterpolants, 39212 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 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...