/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=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 00:05:53,444 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 00:05:53,448 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 00:05:53,474 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 00:05:53,475 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 00:05:53,476 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 00:05:53,478 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 00:05:53,479 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 00:05:53,481 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 00:05:53,482 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 00:05:53,483 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 00:05:53,484 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 00:05:53,485 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 00:05:53,486 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 00:05:53,487 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 00:05:53,488 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 00:05:53,489 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 00:05:53,490 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 00:05:53,492 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 00:05:53,494 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 00:05:53,495 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 00:05:53,499 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 00:05:53,500 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 00:05:53,501 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 00:05:53,507 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 00:05:53,507 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 00:05:53,507 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 00:05:53,508 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 00:05:53,511 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 00:05:53,512 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 00:05:53,512 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 00:05:53,513 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 00:05:53,515 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 00:05:53,516 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 00:05:53,517 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 00:05:53,518 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 00:05:53,518 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 00:05:53,519 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 00:05:53,519 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 00:05:53,529 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 00:05:53,530 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 00:05:53,531 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 00:05:53,583 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 00:05:53,583 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 00:05:53,584 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 00:05:53,585 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 00:05:53,585 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 00:05:53,585 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 00:05:53,586 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 00:05:53,586 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 00:05:53,586 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 00:05:53,586 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 00:05:53,587 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 00:05:53,588 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 00:05:53,588 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 00:05:53,588 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 00:05:53,588 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 00:05:53,589 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 00:05:53,589 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 00:05:53,589 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 00:05:53,589 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 00:05:53,589 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 00:05:53,590 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 00:05:53,590 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 00:05:53,590 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 00:05:53,590 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 00:05:53,590 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 00:05:53,591 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 00:05:53,591 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 00:05:53,591 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 00:05:53,591 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 00:05:53,591 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=SHALLOWEST;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=SHALLOWEST;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=SHALLOWEST;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=SHALLOWEST;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=SHALLOWEST;log-additional-information=true; [2020-09-25 00:05:54,100 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 00:05:54,128 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 00:05:54,133 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 00:05:54,135 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 00:05:54,137 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 00:05:54,138 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+lhb-reducer.c [2020-09-25 00:05:54,232 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4ecd7d062/b65cff5bb4ac4661aa5339b842d03efe/FLAGa34ef4385 [2020-09-25 00:05:54,756 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 00:05:54,757 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+lhb-reducer.c [2020-09-25 00:05:54,766 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4ecd7d062/b65cff5bb4ac4661aa5339b842d03efe/FLAGa34ef4385 [2020-09-25 00:05:55,107 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4ecd7d062/b65cff5bb4ac4661aa5339b842d03efe [2020-09-25 00:05:55,125 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 00:05:55,133 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 00:05:55,135 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 00:05:55,136 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 00:05:55,140 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 00:05:55,141 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:05:55" (1/1) ... [2020-09-25 00:05:55,146 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72b4eb26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:05:55, skipping insertion in model container [2020-09-25 00:05:55,147 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:05:55" (1/1) ... [2020-09-25 00:05:55,157 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 00:05:55,187 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 00:05:55,460 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 00:05:55,472 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 00:05:55,506 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 00:05:55,529 INFO L208 MainTranslator]: Completed translation [2020-09-25 00:05:55,530 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:05:55 WrapperNode [2020-09-25 00:05:55,530 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 00:05:55,531 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 00:05:55,531 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 00:05:55,531 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 00:05:55,554 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:05:55" (1/1) ... [2020-09-25 00:05:55,555 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:05:55" (1/1) ... [2020-09-25 00:05:55,657 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:05:55" (1/1) ... [2020-09-25 00:05:55,658 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:05:55" (1/1) ... [2020-09-25 00:05:55,663 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:05:55" (1/1) ... [2020-09-25 00:05:55,669 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:05:55" (1/1) ... [2020-09-25 00:05:55,677 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:05:55" (1/1) ... [2020-09-25 00:05:55,684 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 00:05:55,685 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 00:05:55,685 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 00:05:55,685 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 00:05:55,687 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:05:55" (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 00:05:55,797 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 00:05:55,798 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 00:05:55,798 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 00:05:55,798 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 00:05:55,799 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 00:05:55,799 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 00:05:55,800 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 00:05:55,800 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 00:05:55,801 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 00:05:55,801 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 00:05:55,801 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 00:05:55,801 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 00:05:56,082 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 00:05:56,082 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 00:05:56,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:05:56 BoogieIcfgContainer [2020-09-25 00:05:56,088 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 00:05:56,089 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 00:05:56,089 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 00:05:56,093 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 00:05:56,094 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:05:55" (1/3) ... [2020-09-25 00:05:56,095 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@430ba909 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:05:56, skipping insertion in model container [2020-09-25 00:05:56,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:05:55" (2/3) ... [2020-09-25 00:05:56,095 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@430ba909 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:05:56, skipping insertion in model container [2020-09-25 00:05:56,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:05:56" (3/3) ... [2020-09-25 00:05:56,098 INFO L109 eAbstractionObserver]: Analyzing ICFG gsv2008.c.i.v+lhb-reducer.c [2020-09-25 00:05:56,110 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 00:05:56,120 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 00:05:56,146 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 00:05:56,176 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 00:05:56,176 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 00:05:56,176 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 00:05:56,176 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 00:05:56,176 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 00:05:56,177 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 00:05:56,177 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 00:05:56,177 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 00:05:56,197 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2020-09-25 00:05:56,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-09-25 00:05:56,204 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:05:56,206 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] [2020-09-25 00:05:56,206 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:05:56,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:05:56,212 INFO L82 PathProgramCache]: Analyzing trace with hash -1819653980, now seen corresponding path program 1 times [2020-09-25 00:05:56,223 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:05:56,224 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [491572267] [2020-09-25 00:05:56,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:05:56,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:05:56,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:05:56,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:05:56,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:05:56,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-25 00:05:56,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:05:56,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 482 [2020-09-25 00:05:56,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:05:56,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 00:05:56,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 00:05:56,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 00:05:56,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 00:05:57,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:05:57,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:05:57,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:05:57,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:05:57,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:05:57,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:05:57,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 00:05:57,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:05:57,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:05:57,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:05:57,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:05:57,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:05:57,038 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 00:05:57,039 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [491572267] [2020-09-25 00:05:57,042 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:05:57,042 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-25 00:05:57,043 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363164253] [2020-09-25 00:05:57,051 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 00:05:57,051 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:05:57,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 00:05:57,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-25 00:05:57,099 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 9 states. [2020-09-25 00:05:57,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:05:57,501 INFO L93 Difference]: Finished difference Result 65 states and 70 transitions. [2020-09-25 00:05:57,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 00:05:57,504 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 28 [2020-09-25 00:05:57,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:05:57,518 INFO L225 Difference]: With dead ends: 65 [2020-09-25 00:05:57,519 INFO L226 Difference]: Without dead ends: 36 [2020-09-25 00:05:57,544 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2020-09-25 00:05:57,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-09-25 00:05:57,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2020-09-25 00:05:57,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-09-25 00:05:57,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2020-09-25 00:05:57,597 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 28 [2020-09-25 00:05:57,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:05:57,597 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2020-09-25 00:05:57,598 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 00:05:57,598 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2020-09-25 00:05:57,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-25 00:05:57,599 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:05:57,599 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:05:57,600 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 00:05:57,600 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:05:57,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:05:57,601 INFO L82 PathProgramCache]: Analyzing trace with hash -1522824151, now seen corresponding path program 1 times [2020-09-25 00:05:57,601 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:05:57,601 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1444953274] [2020-09-25 00:05:57,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:05:57,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:05:57,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:05:57,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:05:57,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:05:58,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:05:58,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 00:05:58,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 00:05:58,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 675 [2020-09-25 00:05:58,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:05:58,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 00:05:58,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 00:05:58,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 00:05:58,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:05:58,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:05:58,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:05:58,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:05:58,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:05:58,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:05:58,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:05:58,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 00:05:58,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:05:58,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:05:58,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:05:58,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:05:58,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:05:58,432 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:05:58,432 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1444953274] [2020-09-25 00:05:58,433 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:05:58,433 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 00:05:58,433 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856050709] [2020-09-25 00:05:58,435 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 00:05:58,436 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:05:58,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 00:05:58,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-09-25 00:05:58,437 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand 11 states. [2020-09-25 00:05:58,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:05:58,690 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2020-09-25 00:05:58,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 00:05:58,691 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 34 [2020-09-25 00:05:58,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:05:58,693 INFO L225 Difference]: With dead ends: 49 [2020-09-25 00:05:58,693 INFO L226 Difference]: Without dead ends: 42 [2020-09-25 00:05:58,694 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2020-09-25 00:05:58,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-25 00:05:58,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2020-09-25 00:05:58,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-09-25 00:05:58,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2020-09-25 00:05:58,702 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 34 [2020-09-25 00:05:58,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:05:58,703 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2020-09-25 00:05:58,703 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 00:05:58,703 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2020-09-25 00:05:58,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-09-25 00:05:58,705 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:05:58,705 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:05:58,705 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 00:05:58,706 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:05:58,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:05:58,706 INFO L82 PathProgramCache]: Analyzing trace with hash -1421125650, now seen corresponding path program 2 times [2020-09-25 00:05:58,707 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:05:58,707 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [214489154] [2020-09-25 00:05:58,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:05:58,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:05:58,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:05:58,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:05:58,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:05:58,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:00,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:06:00,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 00:06:00,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 00:06:00,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1452 [2020-09-25 00:06:00,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:06:00,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 00:06:00,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 00:06:00,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 00:06:00,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:06:00,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:06:00,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:06:00,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:00,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:06:00,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:06:00,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:06:00,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 00:06:00,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:06:00,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:06:00,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:06:00,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:06:00,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:06:00,370 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:06:00,371 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [214489154] [2020-09-25 00:06:00,371 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:06:00,371 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 00:06:00,372 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324561764] [2020-09-25 00:06:00,372 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 00:06:00,372 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:06:00,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 00:06:00,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-09-25 00:06:00,373 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand 13 states. [2020-09-25 00:06:00,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:06:00,682 INFO L93 Difference]: Finished difference Result 55 states and 55 transitions. [2020-09-25 00:06:00,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 00:06:00,683 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 40 [2020-09-25 00:06:00,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:06:00,684 INFO L225 Difference]: With dead ends: 55 [2020-09-25 00:06:00,685 INFO L226 Difference]: Without dead ends: 48 [2020-09-25 00:06:00,686 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2020-09-25 00:06:00,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-09-25 00:06:00,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2020-09-25 00:06:00,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-09-25 00:06:00,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2020-09-25 00:06:00,693 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 40 [2020-09-25 00:06:00,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:06:00,693 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2020-09-25 00:06:00,694 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 00:06:00,694 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2020-09-25 00:06:00,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-25 00:06:00,695 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:06:00,695 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:06:00,696 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 00:06:00,696 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:06:00,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:06:00,697 INFO L82 PathProgramCache]: Analyzing trace with hash -264078349, now seen corresponding path program 3 times [2020-09-25 00:06:00,697 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:06:00,697 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [706064985] [2020-09-25 00:06:00,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:06:00,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:06:00,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:00,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:00,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:00,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:00,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:01,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:06:01,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 00:06:01,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 00:06:01,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1032 [2020-09-25 00:06:01,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:06:01,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 00:06:01,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 00:06:01,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 00:06:01,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:06:01,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:06:01,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:06:01,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:01,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:06:01,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:06:01,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:06:01,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 00:06:01,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:06:01,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:06:01,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:06:01,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:06:01,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 00:06:01,943 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:06:01,945 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [706064985] [2020-09-25 00:06:01,945 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:06:01,946 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 00:06:01,946 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416706945] [2020-09-25 00:06:01,947 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 00:06:01,948 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:06:01,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 00:06:01,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2020-09-25 00:06:01,949 INFO L87 Difference]: Start difference. First operand 47 states and 47 transitions. Second operand 15 states. [2020-09-25 00:06:02,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:06:02,337 INFO L93 Difference]: Finished difference Result 61 states and 61 transitions. [2020-09-25 00:06:02,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 00:06:02,339 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 46 [2020-09-25 00:06:02,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:06:02,343 INFO L225 Difference]: With dead ends: 61 [2020-09-25 00:06:02,343 INFO L226 Difference]: Without dead ends: 54 [2020-09-25 00:06:02,344 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=354, Unknown=0, NotChecked=0, Total=420 [2020-09-25 00:06:02,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-09-25 00:06:02,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 53. [2020-09-25 00:06:02,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-09-25 00:06:02,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 53 transitions. [2020-09-25 00:06:02,360 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 53 transitions. Word has length 46 [2020-09-25 00:06:02,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:06:02,360 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 53 transitions. [2020-09-25 00:06:02,360 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 00:06:02,360 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 53 transitions. [2020-09-25 00:06:02,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-25 00:06:02,362 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:06:02,362 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:06:02,362 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 00:06:02,362 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:06:02,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:06:02,365 INFO L82 PathProgramCache]: Analyzing trace with hash -926037960, now seen corresponding path program 4 times [2020-09-25 00:06:02,366 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:06:02,366 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [171564894] [2020-09-25 00:06:02,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:06:02,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:06:02,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:02,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:02,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:02,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:02,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:03,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:03,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:06:03,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-25 00:06:03,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 00:06:03,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1419 [2020-09-25 00:06:03,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:06:03,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 00:06:03,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 00:06:03,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 00:06:03,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:06:04,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:06:04,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:06:04,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:04,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:06:04,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:06:04,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:06:04,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 00:06:04,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:06:04,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:06:04,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:06:04,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:06:04,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:06:04,033 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:06:04,034 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [171564894] [2020-09-25 00:06:04,034 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:06:04,034 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-25 00:06:04,034 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727141882] [2020-09-25 00:06:04,035 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-25 00:06:04,035 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:06:04,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-25 00:06:04,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272 [2020-09-25 00:06:04,036 INFO L87 Difference]: Start difference. First operand 53 states and 53 transitions. Second operand 17 states. [2020-09-25 00:06:04,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:06:04,415 INFO L93 Difference]: Finished difference Result 67 states and 67 transitions. [2020-09-25 00:06:04,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 00:06:04,416 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 52 [2020-09-25 00:06:04,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:06:04,417 INFO L225 Difference]: With dead ends: 67 [2020-09-25 00:06:04,417 INFO L226 Difference]: Without dead ends: 60 [2020-09-25 00:06:04,418 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=435, Unknown=0, NotChecked=0, Total=506 [2020-09-25 00:06:04,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-09-25 00:06:04,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2020-09-25 00:06:04,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-09-25 00:06:04,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 59 transitions. [2020-09-25 00:06:04,434 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 59 transitions. Word has length 52 [2020-09-25 00:06:04,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:06:04,435 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 59 transitions. [2020-09-25 00:06:04,435 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-25 00:06:04,435 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 59 transitions. [2020-09-25 00:06:04,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-25 00:06:04,436 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:06:04,437 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:06:04,439 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 00:06:04,439 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:06:04,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:06:04,439 INFO L82 PathProgramCache]: Analyzing trace with hash 1757285565, now seen corresponding path program 5 times [2020-09-25 00:06:04,440 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:06:04,440 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [771547449] [2020-09-25 00:06:04,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:06:04,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:06:04,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:04,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:04,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:04,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:04,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:04,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:05,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:06,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:06:06,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-25 00:06:06,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 00:06:06,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2186 [2020-09-25 00:06:06,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:06:06,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 00:06:06,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 00:06:06,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 00:06:06,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:06:06,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:06:06,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:06:06,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:06,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:06:06,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:06:06,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:06:06,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 00:06:06,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:06:06,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:06:06,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:06:06,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:06:06,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 00:06:06,914 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:06:06,914 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [771547449] [2020-09-25 00:06:06,915 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:06:06,915 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-25 00:06:06,915 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799762422] [2020-09-25 00:06:06,917 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-25 00:06:06,917 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:06:06,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-25 00:06:06,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=301, Unknown=0, NotChecked=0, Total=342 [2020-09-25 00:06:06,920 INFO L87 Difference]: Start difference. First operand 59 states and 59 transitions. Second operand 19 states. [2020-09-25 00:06:07,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:06:07,351 INFO L93 Difference]: Finished difference Result 73 states and 73 transitions. [2020-09-25 00:06:07,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-25 00:06:07,352 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 58 [2020-09-25 00:06:07,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:06:07,353 INFO L225 Difference]: With dead ends: 73 [2020-09-25 00:06:07,354 INFO L226 Difference]: Without dead ends: 66 [2020-09-25 00:06:07,357 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=569, Unknown=0, NotChecked=0, Total=650 [2020-09-25 00:06:07,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-25 00:06:07,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2020-09-25 00:06:07,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-09-25 00:06:07,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 65 transitions. [2020-09-25 00:06:07,368 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 65 transitions. Word has length 58 [2020-09-25 00:06:07,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:06:07,370 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 65 transitions. [2020-09-25 00:06:07,371 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-25 00:06:07,371 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 65 transitions. [2020-09-25 00:06:07,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-09-25 00:06:07,373 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:06:07,374 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:06:07,374 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 00:06:07,374 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:06:07,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:06:07,374 INFO L82 PathProgramCache]: Analyzing trace with hash -133686910, now seen corresponding path program 6 times [2020-09-25 00:06:07,375 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:06:07,375 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1578225671] [2020-09-25 00:06:07,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:06:07,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:06:07,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:07,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:07,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:07,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:07,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:07,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:07,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:07,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:08,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:06:08,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 00:06:08,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 00:06:08,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1556 [2020-09-25 00:06:08,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:06:08,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 00:06:08,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 00:06:08,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-25 00:06:08,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:06:09,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:06:09,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:06:09,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:09,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:06:09,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:06:09,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:06:09,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 00:06:09,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:06:09,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:06:09,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:06:09,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:06:09,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:06:09,275 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:06:09,275 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1578225671] [2020-09-25 00:06:09,276 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:06:09,276 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-09-25 00:06:09,277 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678146988] [2020-09-25 00:06:09,277 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-09-25 00:06:09,278 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:06:09,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-09-25 00:06:09,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=374, Unknown=0, NotChecked=0, Total=420 [2020-09-25 00:06:09,278 INFO L87 Difference]: Start difference. First operand 65 states and 65 transitions. Second operand 21 states. [2020-09-25 00:06:09,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:06:09,891 INFO L93 Difference]: Finished difference Result 79 states and 79 transitions. [2020-09-25 00:06:09,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-09-25 00:06:09,892 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 64 [2020-09-25 00:06:09,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:06:09,893 INFO L225 Difference]: With dead ends: 79 [2020-09-25 00:06:09,894 INFO L226 Difference]: Without dead ends: 72 [2020-09-25 00:06:09,895 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=91, Invalid=721, Unknown=0, NotChecked=0, Total=812 [2020-09-25 00:06:09,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-09-25 00:06:09,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2020-09-25 00:06:09,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-09-25 00:06:09,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 71 transitions. [2020-09-25 00:06:09,907 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 71 transitions. Word has length 64 [2020-09-25 00:06:09,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:06:09,908 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 71 transitions. [2020-09-25 00:06:09,909 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-09-25 00:06:09,909 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 71 transitions. [2020-09-25 00:06:09,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-09-25 00:06:09,914 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:06:09,914 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:06:09,914 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 00:06:09,914 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:06:09,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:06:09,919 INFO L82 PathProgramCache]: Analyzing trace with hash -406536569, now seen corresponding path program 7 times [2020-09-25 00:06:09,919 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:06:09,919 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1793859936] [2020-09-25 00:06:09,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:06:09,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:06:09,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:10,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:10,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:10,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:10,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:10,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:10,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:11,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:12,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:12,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:06:12,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-25 00:06:12,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 00:06:12,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2743 [2020-09-25 00:06:12,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:06:12,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-25 00:06:12,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 00:06:12,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-25 00:06:12,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:06:13,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:06:13,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:06:13,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:13,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:06:13,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:06:13,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:06:13,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 00:06:13,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:06:13,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:06:13,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:06:13,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:06:13,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:06:13,061 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:06:13,061 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1793859936] [2020-09-25 00:06:13,062 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:06:13,062 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-09-25 00:06:13,062 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105064278] [2020-09-25 00:06:13,063 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-09-25 00:06:13,064 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:06:13,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-09-25 00:06:13,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=455, Unknown=0, NotChecked=0, Total=506 [2020-09-25 00:06:13,065 INFO L87 Difference]: Start difference. First operand 71 states and 71 transitions. Second operand 23 states. [2020-09-25 00:06:13,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:06:13,768 INFO L93 Difference]: Finished difference Result 85 states and 85 transitions. [2020-09-25 00:06:13,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-09-25 00:06:13,769 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 70 [2020-09-25 00:06:13,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:06:13,770 INFO L225 Difference]: With dead ends: 85 [2020-09-25 00:06:13,770 INFO L226 Difference]: Without dead ends: 78 [2020-09-25 00:06:13,772 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=102, Invalid=890, Unknown=0, NotChecked=0, Total=992 [2020-09-25 00:06:13,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-09-25 00:06:13,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 77. [2020-09-25 00:06:13,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-09-25 00:06:13,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 77 transitions. [2020-09-25 00:06:13,783 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 77 transitions. Word has length 70 [2020-09-25 00:06:13,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:06:13,788 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 77 transitions. [2020-09-25 00:06:13,788 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-09-25 00:06:13,788 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 77 transitions. [2020-09-25 00:06:13,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-09-25 00:06:13,789 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:06:13,790 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:06:13,790 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 00:06:13,790 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:06:13,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:06:13,791 INFO L82 PathProgramCache]: Analyzing trace with hash -2026845236, now seen corresponding path program 8 times [2020-09-25 00:06:13,791 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:06:13,791 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1862258889] [2020-09-25 00:06:13,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:06:13,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:06:13,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:13,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:14,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:14,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:14,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:14,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:14,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:15,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:16,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:16,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:18,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:06:18,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-25 00:06:18,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 00:06:18,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-09-25 00:06:18,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:06:18,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-25 00:06:18,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 00:06:18,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 00:06:18,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:06:19,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:06:19,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:06:19,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:19,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:06:19,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:06:19,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:06:19,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 00:06:19,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:06:19,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:06:19,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:06:19,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:06:19,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:06:19,313 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 0 proven. 184 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:06:19,321 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1862258889] [2020-09-25 00:06:19,322 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:06:19,322 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-09-25 00:06:19,322 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496607238] [2020-09-25 00:06:19,324 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-09-25 00:06:19,325 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:06:19,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-09-25 00:06:19,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=544, Unknown=0, NotChecked=0, Total=600 [2020-09-25 00:06:19,327 INFO L87 Difference]: Start difference. First operand 77 states and 77 transitions. Second operand 25 states. [2020-09-25 00:06:20,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:06:20,075 INFO L93 Difference]: Finished difference Result 91 states and 91 transitions. [2020-09-25 00:06:20,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-09-25 00:06:20,076 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 76 [2020-09-25 00:06:20,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:06:20,078 INFO L225 Difference]: With dead ends: 91 [2020-09-25 00:06:20,078 INFO L226 Difference]: Without dead ends: 84 [2020-09-25 00:06:20,079 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=114, Invalid=1076, Unknown=0, NotChecked=0, Total=1190 [2020-09-25 00:06:20,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-09-25 00:06:20,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 83. [2020-09-25 00:06:20,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-09-25 00:06:20,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 83 transitions. [2020-09-25 00:06:20,086 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 83 transitions. Word has length 76 [2020-09-25 00:06:20,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:06:20,086 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 83 transitions. [2020-09-25 00:06:20,086 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-09-25 00:06:20,086 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 83 transitions. [2020-09-25 00:06:20,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-09-25 00:06:20,087 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:06:20,087 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:06:20,088 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 00:06:20,088 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:06:20,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:06:20,088 INFO L82 PathProgramCache]: Analyzing trace with hash -659746479, now seen corresponding path program 9 times [2020-09-25 00:06:20,089 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:06:20,089 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1756228140] [2020-09-25 00:06:20,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:06:20,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:06:20,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:20,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:20,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:20,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:20,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:20,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:21,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:21,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:21,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:22,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:23,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:24,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:25,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:06:25,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-25 00:06:25,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 00:06:25,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 00:06:25,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:06:25,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-09-25 00:06:25,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 00:06:25,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-25 00:06:25,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:06:25,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:06:25,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:06:25,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:25,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:06:25,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:06:25,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:06:25,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 00:06:25,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:06:25,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:06:25,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:06:25,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:06:25,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:06:25,548 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 0 proven. 234 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:06:25,548 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1756228140] [2020-09-25 00:06:25,549 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:06:25,549 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-09-25 00:06:25,549 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096627614] [2020-09-25 00:06:25,550 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-09-25 00:06:25,550 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:06:25,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-09-25 00:06:25,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=641, Unknown=0, NotChecked=0, Total=702 [2020-09-25 00:06:25,551 INFO L87 Difference]: Start difference. First operand 83 states and 83 transitions. Second operand 27 states. [2020-09-25 00:06:26,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:06:26,355 INFO L93 Difference]: Finished difference Result 84 states and 84 transitions. [2020-09-25 00:06:26,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-09-25 00:06:26,356 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 82 [2020-09-25 00:06:26,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:06:26,356 INFO L225 Difference]: With dead ends: 84 [2020-09-25 00:06:26,356 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 00:06:26,358 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=129, Invalid=1277, Unknown=0, NotChecked=0, Total=1406 [2020-09-25 00:06:26,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 00:06:26,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 00:06:26,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 00:06:26,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 00:06:26,360 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 82 [2020-09-25 00:06:26,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:06:26,360 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 00:06:26,360 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-09-25 00:06:26,360 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 00:06:26,360 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 00:06:26,361 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 00:06:26,363 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 00:06:26,455 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-09-25 00:06:26,455 INFO L268 CegarLoopResult]: For program point L11(line 11) no Hoare annotation was computed. [2020-09-25 00:06:26,455 INFO L268 CegarLoopResult]: For program point L10(line 10) no Hoare annotation was computed. [2020-09-25 00:06:26,455 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~__tmp_55_0~0 |old(~__tmp_55_0~0)|) (= ~__return_main~0 |old(~__return_main~0)|) (= ~__return_65~0 |old(~__return_65~0)|)) [2020-09-25 00:06:26,456 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 00:06:26,456 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 00:06:26,456 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-25 00:06:26,456 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 00:06:26,456 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 00:06:26,457 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 4 6) no Hoare annotation was computed. [2020-09-25 00:06:26,457 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-09-25 00:06:26,457 INFO L268 CegarLoopResult]: For program point L5-1(line 5) no Hoare annotation was computed. [2020-09-25 00:06:26,457 INFO L268 CegarLoopResult]: For program point L5-3(lines 4 6) no Hoare annotation was computed. [2020-09-25 00:06:26,457 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 4 6) no Hoare annotation was computed. [2020-09-25 00:06:26,457 INFO L268 CegarLoopResult]: For program point L33(line 33) no Hoare annotation was computed. [2020-09-25 00:06:26,457 INFO L268 CegarLoopResult]: For program point L60(line 60) no Hoare annotation was computed. [2020-09-25 00:06:26,458 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 12 72) no Hoare annotation was computed. [2020-09-25 00:06:26,458 INFO L268 CegarLoopResult]: For program point L56(line 56) no Hoare annotation was computed. [2020-09-25 00:06:26,458 INFO L268 CegarLoopResult]: For program point L52(line 52) no Hoare annotation was computed. [2020-09-25 00:06:26,458 INFO L268 CegarLoopResult]: For program point L50(line 50) no Hoare annotation was computed. [2020-09-25 00:06:26,458 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-09-25 00:06:26,459 INFO L268 CegarLoopResult]: For program point L17-1(line 17) no Hoare annotation was computed. [2020-09-25 00:06:26,459 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-09-25 00:06:26,459 INFO L268 CegarLoopResult]: For program point L17-2(line 17) no Hoare annotation was computed. [2020-09-25 00:06:26,459 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 12 72) no Hoare annotation was computed. [2020-09-25 00:06:26,459 INFO L264 CegarLoopResult]: At program point L44(lines 31 65) the Hoare annotation is: (or (<= (+ main_~main__x~0 78) (* 7 main_~main__y~0)) (<= (+ main_~main__x~0 105) (* 10 main_~main__y~0)) (<= (+ main_~main__x~0 65) (* 5 main_~main__y~0)) (<= (+ main_~main__x~0 95) (* 9 main_~main__y~0)) (<= (+ main_~main__x~0 51) main_~main__y~0) (<= (+ main_~main__x~0 56) (* 3 main_~main__y~0))) [2020-09-25 00:06:26,460 INFO L268 CegarLoopResult]: For program point L42(line 42) no Hoare annotation was computed. [2020-09-25 00:06:26,460 INFO L268 CegarLoopResult]: For program point L40(line 40) no Hoare annotation was computed. [2020-09-25 00:06:26,460 INFO L268 CegarLoopResult]: For program point L38(lines 38 64) no Hoare annotation was computed. [2020-09-25 00:06:26,460 INFO L268 CegarLoopResult]: For program point L34(line 34) no Hoare annotation was computed. [2020-09-25 00:06:26,460 INFO L268 CegarLoopResult]: For program point L32(line 32) no Hoare annotation was computed. [2020-09-25 00:06:26,460 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 55) no Hoare annotation was computed. [2020-09-25 00:06:26,461 INFO L268 CegarLoopResult]: For program point L30(lines 30 69) no Hoare annotation was computed. [2020-09-25 00:06:26,461 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 12 72) the Hoare annotation is: (and (= ~__tmp_55_0~0 |old(~__tmp_55_0~0)|) (= |old(~__return_65~0)| ~__return_65~0)) [2020-09-25 00:06:26,461 INFO L268 CegarLoopResult]: For program point L61(line 61) no Hoare annotation was computed. [2020-09-25 00:06:26,461 INFO L268 CegarLoopResult]: For program point L26(line 26) no Hoare annotation was computed. [2020-09-25 00:06:26,461 INFO L268 CegarLoopResult]: For program point L24(lines 24 70) no Hoare annotation was computed. [2020-09-25 00:06:26,461 INFO L268 CegarLoopResult]: For program point L55(line 55) no Hoare annotation was computed. [2020-09-25 00:06:26,462 INFO L268 CegarLoopResult]: For program point L53(lines 53 62) no Hoare annotation was computed. [2020-09-25 00:06:26,462 INFO L268 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2020-09-25 00:06:26,462 INFO L268 CegarLoopResult]: For program point L51(line 51) no Hoare annotation was computed. [2020-09-25 00:06:26,462 INFO L268 CegarLoopResult]: For program point L18(lines 18 71) no Hoare annotation was computed. [2020-09-25 00:06:26,462 INFO L268 CegarLoopResult]: For program point L49(line 49) no Hoare annotation was computed. [2020-09-25 00:06:26,462 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-25 00:06:26,462 INFO L268 CegarLoopResult]: For program point L43(line 43) no Hoare annotation was computed. [2020-09-25 00:06:26,463 INFO L268 CegarLoopResult]: For program point L41(line 41) no Hoare annotation was computed. [2020-09-25 00:06:26,463 INFO L268 CegarLoopResult]: For program point L68(line 68) no Hoare annotation was computed. [2020-09-25 00:06:26,463 INFO L268 CegarLoopResult]: For program point L35(line 35) no Hoare annotation was computed. [2020-09-25 00:06:26,489 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 12:06:26 BoogieIcfgContainer [2020-09-25 00:06:26,489 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 00:06:26,493 INFO L168 Benchmark]: Toolchain (without parser) took 31363.78 ms. Allocated memory was 138.9 MB in the beginning and 409.5 MB in the end (delta: 270.5 MB). Free memory was 102.4 MB in the beginning and 258.6 MB in the end (delta: -156.2 MB). Peak memory consumption was 114.3 MB. Max. memory is 7.1 GB. [2020-09-25 00:06:26,494 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 138.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-25 00:06:26,495 INFO L168 Benchmark]: CACSL2BoogieTranslator took 394.94 ms. Allocated memory is still 138.9 MB. Free memory was 101.8 MB in the beginning and 92.0 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2020-09-25 00:06:26,496 INFO L168 Benchmark]: Boogie Preprocessor took 153.77 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 92.0 MB in the beginning and 181.6 MB in the end (delta: -89.6 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. [2020-09-25 00:06:26,497 INFO L168 Benchmark]: RCFGBuilder took 402.85 ms. Allocated memory is still 202.9 MB. Free memory was 181.6 MB in the beginning and 165.6 MB in the end (delta: 15.9 MB). Peak memory consumption was 15.9 MB. Max. memory is 7.1 GB. [2020-09-25 00:06:26,498 INFO L168 Benchmark]: TraceAbstraction took 30400.67 ms. Allocated memory was 202.9 MB in the beginning and 409.5 MB in the end (delta: 206.6 MB). Free memory was 165.6 MB in the beginning and 258.6 MB in the end (delta: -93.0 MB). Peak memory consumption was 113.6 MB. Max. memory is 7.1 GB. [2020-09-25 00:06:26,501 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 138.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 394.94 ms. Allocated memory is still 138.9 MB. Free memory was 101.8 MB in the beginning and 92.0 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 153.77 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 92.0 MB in the beginning and 181.6 MB in the end (delta: -89.6 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 402.85 ms. Allocated memory is still 202.9 MB. Free memory was 181.6 MB in the beginning and 165.6 MB in the end (delta: 15.9 MB). Peak memory consumption was 15.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 30400.67 ms. Allocated memory was 202.9 MB in the beginning and 409.5 MB in the end (delta: 206.6 MB). Free memory was 165.6 MB in the beginning and 258.6 MB in the end (delta: -93.0 MB). Peak memory consumption was 113.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 55]: 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: 31]: Loop Invariant Derived loop invariant: ((((main__x + 78 <= 7 * main__y || main__x + 105 <= 10 * main__y) || main__x + 65 <= 5 * main__y) || main__x + 95 <= 9 * main__y) || main__x + 51 <= main__y) || main__x + 56 <= 3 * main__y - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 48 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 30.1s, OverallIterations: 10, TraceHistogramMax: 10, AutomataDifference: 5.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 312 SDtfs, 454 SDslu, 2095 SDs, 0 SdLazy, 4268 SolverSat, 116 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 266 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 236 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1144 ImplicationChecksByTransitivity, 3.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=83occurred 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: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 9 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 14 NumberOfFragments, 60 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 31 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 24.3s InterpolantComputationTime, 550 NumberOfCodeBlocks, 550 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 540 ConstructedInterpolants, 0 QuantifiedInterpolants, 173484 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 1 PerfectInterpolantSequences, 0/810 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...