/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=HIGHLEXORDER --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-invgen/nested6.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 22:56:47,118 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 22:56:47,122 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 22:56:47,148 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 22:56:47,148 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 22:56:47,149 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 22:56:47,151 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 22:56:47,153 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 22:56:47,154 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 22:56:47,155 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 22:56:47,156 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 22:56:47,157 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 22:56:47,158 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 22:56:47,159 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 22:56:47,160 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 22:56:47,161 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 22:56:47,162 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 22:56:47,163 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 22:56:47,165 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 22:56:47,166 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 22:56:47,168 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 22:56:47,169 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 22:56:47,170 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 22:56:47,171 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 22:56:47,174 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 22:56:47,174 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 22:56:47,174 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 22:56:47,175 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 22:56:47,175 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 22:56:47,176 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 22:56:47,177 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 22:56:47,178 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 22:56:47,178 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 22:56:47,179 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 22:56:47,180 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 22:56:47,180 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 22:56:47,181 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 22:56:47,181 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 22:56:47,182 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 22:56:47,183 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 22:56:47,183 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 22:56:47,184 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 22:56:47,210 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 22:56:47,210 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 22:56:47,211 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 22:56:47,212 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 22:56:47,212 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 22:56:47,212 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 22:56:47,212 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 22:56:47,213 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 22:56:47,213 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 22:56:47,213 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 22:56:47,213 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 22:56:47,213 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 22:56:47,214 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 22:56:47,214 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 22:56:47,214 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 22:56:47,214 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 22:56:47,214 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 22:56:47,215 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 22:56:47,215 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 22:56:47,215 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 22:56:47,215 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 22:56:47,215 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 22:56:47,216 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 22:56:47,216 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 22:56:47,216 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 22:56:47,216 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 22:56:47,217 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 22:56:47,217 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 22:56:47,217 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 22:56:47,217 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=HIGHLEXORDER;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=HIGHLEXORDER;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=HIGHLEXORDER;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=HIGHLEXORDER;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=HIGHLEXORDER;log-additional-information=true; [2020-09-24 22:56:47,706 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 22:56:47,730 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 22:56:47,734 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 22:56:47,736 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 22:56:47,736 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 22:56:47,737 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/nested6.i [2020-09-24 22:56:47,811 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ec0fd0b09/34933facef8e466d9bfda596c49dd3c2/FLAG410515099 [2020-09-24 22:56:48,357 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 22:56:48,358 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-invgen/nested6.i [2020-09-24 22:56:48,367 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ec0fd0b09/34933facef8e466d9bfda596c49dd3c2/FLAG410515099 [2020-09-24 22:56:48,690 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ec0fd0b09/34933facef8e466d9bfda596c49dd3c2 [2020-09-24 22:56:48,707 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 22:56:48,716 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 22:56:48,721 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 22:56:48,722 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 22:56:48,726 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 22:56:48,727 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 10:56:48" (1/1) ... [2020-09-24 22:56:48,733 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@492240a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:56:48, skipping insertion in model container [2020-09-24 22:56:48,733 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 10:56:48" (1/1) ... [2020-09-24 22:56:48,743 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 22:56:48,775 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 22:56:49,002 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 22:56:49,007 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 22:56:49,027 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 22:56:49,043 INFO L208 MainTranslator]: Completed translation [2020-09-24 22:56:49,043 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:56:49 WrapperNode [2020-09-24 22:56:49,044 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 22:56:49,044 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 22:56:49,045 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 22:56:49,045 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 22:56:49,058 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:56:49" (1/1) ... [2020-09-24 22:56:49,059 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:56:49" (1/1) ... [2020-09-24 22:56:49,151 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:56:49" (1/1) ... [2020-09-24 22:56:49,152 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:56:49" (1/1) ... [2020-09-24 22:56:49,156 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:56:49" (1/1) ... [2020-09-24 22:56:49,163 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:56:49" (1/1) ... [2020-09-24 22:56:49,164 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:56:49" (1/1) ... [2020-09-24 22:56:49,166 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 22:56:49,167 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 22:56:49,167 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 22:56:49,167 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 22:56:49,168 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:56:49" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 22:56:49,241 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 22:56:49,241 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 22:56:49,241 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-24 22:56:49,242 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-24 22:56:49,242 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 22:56:49,242 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 22:56:49,242 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 22:56:49,242 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-24 22:56:49,243 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 22:56:49,243 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 22:56:49,243 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 22:56:49,243 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 22:56:49,244 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 22:56:49,542 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 22:56:49,543 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-09-24 22:56:49,551 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 10:56:49 BoogieIcfgContainer [2020-09-24 22:56:49,552 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 22:56:49,567 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 22:56:49,568 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 22:56:49,573 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 22:56:49,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 10:56:48" (1/3) ... [2020-09-24 22:56:49,574 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33f1b0af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 10:56:49, skipping insertion in model container [2020-09-24 22:56:49,575 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:56:49" (2/3) ... [2020-09-24 22:56:49,575 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33f1b0af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 10:56:49, skipping insertion in model container [2020-09-24 22:56:49,576 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 10:56:49" (3/3) ... [2020-09-24 22:56:49,579 INFO L109 eAbstractionObserver]: Analyzing ICFG nested6.i [2020-09-24 22:56:49,606 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 22:56:49,620 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 22:56:49,657 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 22:56:49,688 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 22:56:49,688 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 22:56:49,688 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 22:56:49,688 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 22:56:49,688 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 22:56:49,689 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 22:56:49,689 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 22:56:49,689 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 22:56:49,713 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states. [2020-09-24 22:56:49,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-24 22:56:49,722 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:56:49,723 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:56:49,724 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:56:49,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:56:49,731 INFO L82 PathProgramCache]: Analyzing trace with hash 2127483765, now seen corresponding path program 1 times [2020-09-24 22:56:49,740 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:56:49,741 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [111379443] [2020-09-24 22:56:49,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:56:49,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:56:49,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:50,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:56:50,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-24 22:56:50,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:56:50,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 223 [2020-09-24 22:56:50,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:56:50,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:56:50,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-24 22:56:50,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-24 22:56:50,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-24 22:56:50,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:56:50,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:56:50,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:50,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:56:50,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:56:50,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:56:50,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 22:56:50,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:56:50,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:56:50,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:56:50,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:56:50,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:56:50,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:56:50,287 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [111379443] [2020-09-24 22:56:50,289 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:56:50,290 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 22:56:50,291 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411480031] [2020-09-24 22:56:50,298 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 22:56:50,298 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:56:50,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 22:56:50,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 22:56:50,320 INFO L87 Difference]: Start difference. First operand 50 states. Second operand 5 states. [2020-09-24 22:56:50,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:56:50,480 INFO L93 Difference]: Finished difference Result 89 states and 112 transitions. [2020-09-24 22:56:50,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 22:56:50,482 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-09-24 22:56:50,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:56:50,495 INFO L225 Difference]: With dead ends: 89 [2020-09-24 22:56:50,496 INFO L226 Difference]: Without dead ends: 48 [2020-09-24 22:56:50,501 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 22:56:50,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-09-24 22:56:50,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2020-09-24 22:56:50,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-09-24 22:56:50,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2020-09-24 22:56:50,552 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 27 [2020-09-24 22:56:50,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:56:50,553 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2020-09-24 22:56:50,553 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 22:56:50,553 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2020-09-24 22:56:50,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-24 22:56:50,555 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:56:50,555 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:56:50,556 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 22:56:50,556 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:56:50,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:56:50,557 INFO L82 PathProgramCache]: Analyzing trace with hash 1763359327, now seen corresponding path program 1 times [2020-09-24 22:56:50,557 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:56:50,558 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [313265791] [2020-09-24 22:56:50,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:56:50,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:56:50,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:50,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:56:50,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 22:56:50,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:56:50,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-09-24 22:56:50,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:56:50,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:56:50,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-24 22:56:50,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 22:56:50,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:56:50,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:56:50,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:56:50,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:50,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:56:50,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:56:50,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:56:50,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 22:56:50,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:56:50,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:56:50,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:56:50,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:56:50,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:56:50,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:56:50,798 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [313265791] [2020-09-24 22:56:50,799 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:56:50,799 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 22:56:50,799 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515464181] [2020-09-24 22:56:50,802 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 22:56:50,803 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:56:50,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 22:56:50,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 22:56:50,805 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand 6 states. [2020-09-24 22:56:51,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:56:51,056 INFO L93 Difference]: Finished difference Result 90 states and 105 transitions. [2020-09-24 22:56:51,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 22:56:51,057 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 29 [2020-09-24 22:56:51,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:56:51,059 INFO L225 Difference]: With dead ends: 90 [2020-09-24 22:56:51,060 INFO L226 Difference]: Without dead ends: 88 [2020-09-24 22:56:51,061 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 22:56:51,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-09-24 22:56:51,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 59. [2020-09-24 22:56:51,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-09-24 22:56:51,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 66 transitions. [2020-09-24 22:56:51,078 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 66 transitions. Word has length 29 [2020-09-24 22:56:51,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:56:51,079 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 66 transitions. [2020-09-24 22:56:51,079 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 22:56:51,079 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 66 transitions. [2020-09-24 22:56:51,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-09-24 22:56:51,081 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:56:51,081 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] [2020-09-24 22:56:51,081 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 22:56:51,082 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:56:51,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:56:51,094 INFO L82 PathProgramCache]: Analyzing trace with hash 2139784298, now seen corresponding path program 1 times [2020-09-24 22:56:51,094 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:56:51,094 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [954653975] [2020-09-24 22:56:51,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:56:51,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:56:51,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:51,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:56:51,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-24 22:56:51,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:56:51,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-09-24 22:56:51,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:56:51,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:56:51,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-24 22:56:51,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 22:56:51,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:56:51,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:56:51,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:56:51,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:51,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:56:51,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:56:51,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:56:51,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 22:56:51,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:56:51,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:56:51,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:56:51,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:56:51,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:56:51,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-24 22:56:51,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:56:51,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:51,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:56:51,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 22:56:51,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:56:51,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 22:56:51,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:56:51,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:56:51,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:56:51,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 22:56:51,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:56:51,278 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:56:51,278 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [954653975] [2020-09-24 22:56:51,279 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:56:51,279 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 22:56:51,279 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436239018] [2020-09-24 22:56:51,280 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 22:56:51,280 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:56:51,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 22:56:51,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 22:56:51,281 INFO L87 Difference]: Start difference. First operand 59 states and 66 transitions. Second operand 5 states. [2020-09-24 22:56:51,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:56:51,358 INFO L93 Difference]: Finished difference Result 90 states and 101 transitions. [2020-09-24 22:56:51,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 22:56:51,358 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2020-09-24 22:56:51,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:56:51,362 INFO L225 Difference]: With dead ends: 90 [2020-09-24 22:56:51,363 INFO L226 Difference]: Without dead ends: 88 [2020-09-24 22:56:51,363 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 22:56:51,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-09-24 22:56:51,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 84. [2020-09-24 22:56:51,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-09-24 22:56:51,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 95 transitions. [2020-09-24 22:56:51,377 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 95 transitions. Word has length 32 [2020-09-24 22:56:51,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:56:51,378 INFO L479 AbstractCegarLoop]: Abstraction has 84 states and 95 transitions. [2020-09-24 22:56:51,378 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 22:56:51,378 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 95 transitions. [2020-09-24 22:56:51,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-24 22:56:51,380 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:56:51,380 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:56:51,380 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 22:56:51,380 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:56:51,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:56:51,381 INFO L82 PathProgramCache]: Analyzing trace with hash -268568898, now seen corresponding path program 1 times [2020-09-24 22:56:51,381 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:56:51,381 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2012202426] [2020-09-24 22:56:51,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:56:51,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:56:51,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:51,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:51,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:56:51,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-24 22:56:51,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:56:51,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 593 [2020-09-24 22:56:51,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:56:51,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 22:56:51,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-09-24 22:56:51,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 22:56:51,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 22:56:52,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:56:52,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:56:52,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:52,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:56:52,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:56:52,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:56:52,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 22:56:52,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:56:52,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:56:52,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:56:52,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:56:52,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:56:52,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-24 22:56:52,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:56:52,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:52,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:56:52,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 22:56:52,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:56:52,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 22:56:52,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:56:52,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:56:52,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:56:52,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:56:52,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:56:52,095 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:56:52,095 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2012202426] [2020-09-24 22:56:52,095 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:56:52,096 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 22:56:52,096 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387071772] [2020-09-24 22:56:52,097 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 22:56:52,097 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:56:52,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 22:56:52,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-24 22:56:52,098 INFO L87 Difference]: Start difference. First operand 84 states and 95 transitions. Second operand 9 states. [2020-09-24 22:56:52,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:56:52,310 INFO L93 Difference]: Finished difference Result 107 states and 123 transitions. [2020-09-24 22:56:52,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 22:56:52,311 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 38 [2020-09-24 22:56:52,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:56:52,313 INFO L225 Difference]: With dead ends: 107 [2020-09-24 22:56:52,313 INFO L226 Difference]: Without dead ends: 105 [2020-09-24 22:56:52,314 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2020-09-24 22:56:52,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-09-24 22:56:52,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 84. [2020-09-24 22:56:52,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-09-24 22:56:52,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 95 transitions. [2020-09-24 22:56:52,328 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 95 transitions. Word has length 38 [2020-09-24 22:56:52,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:56:52,328 INFO L479 AbstractCegarLoop]: Abstraction has 84 states and 95 transitions. [2020-09-24 22:56:52,329 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 22:56:52,329 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 95 transitions. [2020-09-24 22:56:52,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-24 22:56:52,330 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:56:52,331 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:56:52,331 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 22:56:52,331 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:56:52,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:56:52,332 INFO L82 PathProgramCache]: Analyzing trace with hash -360550748, now seen corresponding path program 1 times [2020-09-24 22:56:52,332 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:56:52,333 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1310876545] [2020-09-24 22:56:52,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:56:52,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:56:52,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:52,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:52,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:52,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:52,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:53,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:53,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:56:53,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 22:56:53,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 22:56:53,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1035 [2020-09-24 22:56:53,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:56:53,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:56:53,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-09-24 22:56:53,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 22:56:53,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:56:53,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:56:53,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:56:53,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:53,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:56:53,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:56:53,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:56:53,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 22:56:53,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:56:53,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:56:53,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:56:53,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:56:53,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:56:53,430 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:56:53,431 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1310876545] [2020-09-24 22:56:53,432 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:56:53,432 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 22:56:53,432 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442267491] [2020-09-24 22:56:53,433 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 22:56:53,433 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:56:53,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 22:56:53,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-24 22:56:53,434 INFO L87 Difference]: Start difference. First operand 84 states and 95 transitions. Second operand 7 states. [2020-09-24 22:56:53,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:56:53,587 INFO L93 Difference]: Finished difference Result 141 states and 162 transitions. [2020-09-24 22:56:53,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 22:56:53,588 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2020-09-24 22:56:53,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:56:53,589 INFO L225 Difference]: With dead ends: 141 [2020-09-24 22:56:53,593 INFO L226 Difference]: Without dead ends: 99 [2020-09-24 22:56:53,594 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-09-24 22:56:53,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-09-24 22:56:53,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 89. [2020-09-24 22:56:53,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-09-24 22:56:53,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 101 transitions. [2020-09-24 22:56:53,620 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 101 transitions. Word has length 38 [2020-09-24 22:56:53,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:56:53,622 INFO L479 AbstractCegarLoop]: Abstraction has 89 states and 101 transitions. [2020-09-24 22:56:53,622 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 22:56:53,623 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 101 transitions. [2020-09-24 22:56:53,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-24 22:56:53,624 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:56:53,624 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:56:53,626 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 22:56:53,626 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:56:53,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:56:53,627 INFO L82 PathProgramCache]: Analyzing trace with hash 1447898534, now seen corresponding path program 1 times [2020-09-24 22:56:53,627 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:56:53,627 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2078561945] [2020-09-24 22:56:53,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:56:53,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:56:53,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:53,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:56:53,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-24 22:56:53,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:56:53,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-09-24 22:56:53,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:56:53,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 22:56:53,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-24 22:56:53,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 22:56:53,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 22:56:53,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:56:53,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:56:53,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:53,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:56:53,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:56:53,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:56:53,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 22:56:53,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:56:53,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:56:53,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:56:53,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:56:53,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 22:56:53,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-24 22:56:53,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:56:53,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:53,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:56:53,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 22:56:53,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:56:53,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 22:56:53,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:56:53,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:56:53,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:56:53,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 22:56:53,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:56:53,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 22:56:53,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:56:53,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:53,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:56:53,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 22:56:53,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:56:53,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 22:56:53,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:56:53,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:56:53,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:56:53,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 22:56:53,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:56:53,977 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-24 22:56:53,978 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2078561945] [2020-09-24 22:56:53,979 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:56:53,979 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 22:56:53,980 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719547247] [2020-09-24 22:56:53,981 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 22:56:53,981 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:56:53,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 22:56:53,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-24 22:56:53,982 INFO L87 Difference]: Start difference. First operand 89 states and 101 transitions. Second operand 8 states. [2020-09-24 22:56:54,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:56:54,215 INFO L93 Difference]: Finished difference Result 157 states and 186 transitions. [2020-09-24 22:56:54,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 22:56:54,216 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 46 [2020-09-24 22:56:54,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:56:54,219 INFO L225 Difference]: With dead ends: 157 [2020-09-24 22:56:54,219 INFO L226 Difference]: Without dead ends: 155 [2020-09-24 22:56:54,220 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-09-24 22:56:54,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-09-24 22:56:54,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 120. [2020-09-24 22:56:54,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-09-24 22:56:54,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 143 transitions. [2020-09-24 22:56:54,236 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 143 transitions. Word has length 46 [2020-09-24 22:56:54,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:56:54,236 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 143 transitions. [2020-09-24 22:56:54,236 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 22:56:54,236 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 143 transitions. [2020-09-24 22:56:54,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-24 22:56:54,238 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:56:54,239 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:56:54,239 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 22:56:54,239 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:56:54,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:56:54,240 INFO L82 PathProgramCache]: Analyzing trace with hash 517351166, now seen corresponding path program 1 times [2020-09-24 22:56:54,240 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:56:54,240 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1178995881] [2020-09-24 22:56:54,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:56:54,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:56:54,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:54,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:54,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:54,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:54,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:54,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:55,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:55,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:55,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:55,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:56,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:56,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:56,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:57,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:59,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:56:59,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-09-24 22:56:59,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-09-24 22:56:59,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-24 22:56:59,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:56:59,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:56:59,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-09-24 22:56:59,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 22:56:59,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:56:59,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:56:59,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:56:59,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:59,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:56:59,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:56:59,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:56:59,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 22:56:59,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:56:59,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:56:59,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:56:59,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:56:59,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:56:59,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-24 22:56:59,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:56:59,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:59,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:59,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:56:59,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 22:56:59,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:56:59,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 22:56:59,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:56:59,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:56:59,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:56:59,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 22:56:59,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:56:59,430 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 22:56:59,431 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1178995881] [2020-09-24 22:56:59,432 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:56:59,432 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 22:56:59,433 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435247782] [2020-09-24 22:56:59,435 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 22:56:59,436 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:56:59,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 22:56:59,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-24 22:56:59,437 INFO L87 Difference]: Start difference. First operand 120 states and 143 transitions. Second operand 8 states. [2020-09-24 22:56:59,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:56:59,604 INFO L93 Difference]: Finished difference Result 185 states and 223 transitions. [2020-09-24 22:56:59,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 22:56:59,607 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 47 [2020-09-24 22:56:59,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:56:59,609 INFO L225 Difference]: With dead ends: 185 [2020-09-24 22:56:59,610 INFO L226 Difference]: Without dead ends: 116 [2020-09-24 22:56:59,612 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-09-24 22:56:59,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-09-24 22:56:59,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2020-09-24 22:56:59,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-09-24 22:56:59,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 136 transitions. [2020-09-24 22:56:59,641 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 136 transitions. Word has length 47 [2020-09-24 22:56:59,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:56:59,641 INFO L479 AbstractCegarLoop]: Abstraction has 116 states and 136 transitions. [2020-09-24 22:56:59,642 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 22:56:59,643 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 136 transitions. [2020-09-24 22:56:59,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-09-24 22:56:59,645 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:56:59,646 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:56:59,646 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 22:56:59,646 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:56:59,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:56:59,647 INFO L82 PathProgramCache]: Analyzing trace with hash 87970788, now seen corresponding path program 1 times [2020-09-24 22:56:59,651 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:56:59,652 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [201163591] [2020-09-24 22:56:59,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:56:59,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:56:59,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:59,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:59,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:56:59,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:57:00,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:57:00,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:57:02,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:57:02,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-24 22:57:02,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 22:57:02,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2646 [2020-09-24 22:57:02,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:57:02,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:57:02,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-09-24 22:57:02,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 22:57:02,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:57:02,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:57:02,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:57:02,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:57:02,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:57:02,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:57:02,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:57:02,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 22:57:02,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:57:02,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:57:02,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:57:02,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:57:02,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:57:02,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-24 22:57:02,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:57:02,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:57:02,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:57:02,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 22:57:02,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:57:02,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 22:57:02,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:57:02,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:57:02,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:57:02,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 22:57:02,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:57:02,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-09-24 22:57:02,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:57:02,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:57:02,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:57:02,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 22:57:02,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:57:02,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 22:57:02,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:57:02,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:57:02,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:57:02,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 22:57:02,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:57:02,416 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-24 22:57:02,417 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [201163591] [2020-09-24 22:57:02,417 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:57:02,417 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 22:57:02,418 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842741897] [2020-09-24 22:57:02,419 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 22:57:02,420 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:57:02,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 22:57:02,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-24 22:57:02,421 INFO L87 Difference]: Start difference. First operand 116 states and 136 transitions. Second operand 7 states. [2020-09-24 22:57:02,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:57:02,548 INFO L93 Difference]: Finished difference Result 122 states and 141 transitions. [2020-09-24 22:57:02,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 22:57:02,552 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 50 [2020-09-24 22:57:02,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:57:02,553 INFO L225 Difference]: With dead ends: 122 [2020-09-24 22:57:02,554 INFO L226 Difference]: Without dead ends: 120 [2020-09-24 22:57:02,555 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-09-24 22:57:02,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-09-24 22:57:02,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 86. [2020-09-24 22:57:02,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-09-24 22:57:02,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 97 transitions. [2020-09-24 22:57:02,573 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 97 transitions. Word has length 50 [2020-09-24 22:57:02,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:57:02,573 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 97 transitions. [2020-09-24 22:57:02,574 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 22:57:02,574 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 97 transitions. [2020-09-24 22:57:02,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-09-24 22:57:02,576 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:57:02,576 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:57:02,576 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 22:57:02,577 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:57:02,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:57:02,577 INFO L82 PathProgramCache]: Analyzing trace with hash 1080348991, now seen corresponding path program 2 times [2020-09-24 22:57:02,578 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:57:02,578 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [431444246] [2020-09-24 22:57:02,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:57:02,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:57:02,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:57:02,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:57:02,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-24 22:57:02,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:57:02,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-09-24 22:57:02,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:57:02,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 22:57:02,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-24 22:57:02,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-24 22:57:02,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:57:02,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:57:02,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:57:02,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:57:02,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:57:02,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:57:02,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:57:02,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 22:57:02,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:57:02,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:57:02,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:57:02,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:57:02,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:57:02,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-24 22:57:02,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:57:02,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:57:02,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:57:02,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 22:57:02,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:57:02,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 22:57:02,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:57:02,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:57:02,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:57:02,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 22:57:02,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:57:02,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 22:57:02,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:57:02,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:57:02,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:57:02,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 22:57:02,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:57:02,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 22:57:02,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:57:02,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:57:02,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:57:02,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 22:57:02,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:57:02,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-24 22:57:02,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:57:02,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:57:02,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:57:02,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 22:57:02,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:57:02,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 22:57:02,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:57:02,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:57:02,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:57:02,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 22:57:02,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:57:02,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-24 22:57:02,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:57:02,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:57:02,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:57:02,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 22:57:02,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:57:02,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 22:57:02,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:57:02,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:57:02,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:57:02,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 22:57:02,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:57:02,952 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 12 proven. 11 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-09-24 22:57:02,955 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [431444246] [2020-09-24 22:57:02,956 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:57:02,956 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-24 22:57:02,956 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296656707] [2020-09-24 22:57:02,960 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 22:57:02,960 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:57:02,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 22:57:02,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-09-24 22:57:02,961 INFO L87 Difference]: Start difference. First operand 86 states and 97 transitions. Second operand 10 states. [2020-09-24 22:57:03,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:57:03,276 INFO L93 Difference]: Finished difference Result 102 states and 117 transitions. [2020-09-24 22:57:03,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 22:57:03,276 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 63 [2020-09-24 22:57:03,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:57:03,277 INFO L225 Difference]: With dead ends: 102 [2020-09-24 22:57:03,277 INFO L226 Difference]: Without dead ends: 0 [2020-09-24 22:57:03,279 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2020-09-24 22:57:03,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-24 22:57:03,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-24 22:57:03,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-24 22:57:03,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-24 22:57:03,280 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 63 [2020-09-24 22:57:03,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:57:03,280 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-24 22:57:03,280 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 22:57:03,280 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-24 22:57:03,281 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-24 22:57:03,281 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 22:57:03,284 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-24 22:57:03,782 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-24 22:57:03,782 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-24 22:57:03,782 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-24 22:57:03,783 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-24 22:57:03,783 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-24 22:57:03,783 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-24 22:57:03,783 INFO L268 CegarLoopResult]: For program point L4-3(lines 3 5) no Hoare annotation was computed. [2020-09-24 22:57:03,783 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-09-24 22:57:03,783 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-09-24 22:57:03,784 INFO L268 CegarLoopResult]: For program point L4-1(line 4) no Hoare annotation was computed. [2020-09-24 22:57:03,784 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-09-24 22:57:03,784 INFO L268 CegarLoopResult]: For program point L31(lines 23 33) no Hoare annotation was computed. [2020-09-24 22:57:03,784 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 37) no Hoare annotation was computed. [2020-09-24 22:57:03,784 INFO L268 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed. [2020-09-24 22:57:03,784 INFO L268 CegarLoopResult]: For program point L23-3(line 23) no Hoare annotation was computed. [2020-09-24 22:57:03,784 INFO L268 CegarLoopResult]: For program point L23-4(line 23) no Hoare annotation was computed. [2020-09-24 22:57:03,785 INFO L264 CegarLoopResult]: At program point L23-5(lines 23 33) the Hoare annotation is: (let ((.cse0 (<= main_~n~0 main_~k~0)) (.cse1 (<= main_~k~0 main_~n~0))) (or (and .cse0 .cse1 (= (* main_~i~0 2) main_~j~0)) (and (<= (+ (* 2 main_~i~0) 1) main_~j~0) .cse0 .cse1))) [2020-09-24 22:57:03,785 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-09-24 22:57:03,785 INFO L268 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2020-09-24 22:57:03,786 INFO L268 CegarLoopResult]: For program point L15-2(line 15) no Hoare annotation was computed. [2020-09-24 22:57:03,786 INFO L268 CegarLoopResult]: For program point L24(line 24) no Hoare annotation was computed. [2020-09-24 22:57:03,786 INFO L268 CegarLoopResult]: For program point L24-1(lines 24 32) no Hoare annotation was computed. [2020-09-24 22:57:03,786 INFO L268 CegarLoopResult]: For program point L24-2(line 24) no Hoare annotation was computed. [2020-09-24 22:57:03,786 INFO L268 CegarLoopResult]: For program point L24-3(line 24) no Hoare annotation was computed. [2020-09-24 22:57:03,786 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-24 22:57:03,787 INFO L268 CegarLoopResult]: For program point L16-1(line 16) no Hoare annotation was computed. [2020-09-24 22:57:03,787 INFO L268 CegarLoopResult]: For program point L16-2(line 16) no Hoare annotation was computed. [2020-09-24 22:57:03,787 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-09-24 22:57:03,787 INFO L268 CegarLoopResult]: For program point L25-3(line 25) no Hoare annotation was computed. [2020-09-24 22:57:03,787 INFO L268 CegarLoopResult]: For program point L25-4(line 25) no Hoare annotation was computed. [2020-09-24 22:57:03,787 INFO L264 CegarLoopResult]: At program point L25-5(lines 25 27) the Hoare annotation is: (let ((.cse4 (* 2 main_~i~0))) (let ((.cse3 (+ .cse4 1))) (let ((.cse0 (or (<= .cse3 main_~k~0) (and (<= .cse4 main_~j~0) (<= .cse4 main_~k~0)))) (.cse1 (<= (+ main_~j~0 1) main_~n~0)) (.cse2 (<= main_~k~0 main_~n~0))) (or (and .cse0 .cse1 .cse2 (= (* main_~i~0 2) main_~j~0)) (and .cse0 (<= .cse3 main_~j~0) .cse1 .cse2))))) [2020-09-24 22:57:03,788 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-09-24 22:57:03,788 INFO L268 CegarLoopResult]: For program point L17-1(line 17) no Hoare annotation was computed. [2020-09-24 22:57:03,788 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 37) no Hoare annotation was computed. [2020-09-24 22:57:03,788 INFO L264 CegarLoopResult]: At program point L30(line 30) the Hoare annotation is: (let ((.cse1 (<= main_~n~0 main_~k~0)) (.cse0 (<= (+ main_~j~0 1) main_~n~0)) (.cse2 (<= main_~k~0 main_~n~0))) (or (and (<= (+ (* 2 main_~i~0) 1) main_~j~0) .cse0 .cse1 .cse2) (and .cse1 .cse0 .cse2 (= (* main_~i~0 2) main_~j~0)))) [2020-09-24 22:57:03,788 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 37) the Hoare annotation is: true [2020-09-24 22:57:03,788 INFO L264 CegarLoopResult]: At program point L30-1(line 30) the Hoare annotation is: (let ((.cse1 (<= main_~n~0 main_~k~0)) (.cse0 (<= (+ main_~j~0 1) main_~n~0)) (.cse2 (<= main_~k~0 main_~n~0))) (or (and (<= (+ (* 2 main_~i~0) 1) main_~j~0) .cse0 .cse1 .cse2) (and .cse1 .cse0 .cse2 (= (* main_~i~0 2) main_~j~0)))) [2020-09-24 22:57:03,789 INFO L264 CegarLoopResult]: At program point L26(line 26) the Hoare annotation is: (let ((.cse3 (* 2 main_~i~0))) (let ((.cse2 (+ .cse3 1))) (let ((.cse0 (or (<= .cse2 main_~k~0) (and (<= .cse3 main_~j~0) (<= .cse3 main_~k~0)))) (.cse1 (<= (+ main_~k~0 1) main_~n~0))) (or (and .cse0 .cse1 (= (* main_~i~0 2) main_~j~0)) (and .cse0 .cse1 (<= .cse2 main_~j~0) (<= (+ main_~j~0 1) main_~n~0)))))) [2020-09-24 22:57:03,789 INFO L268 CegarLoopResult]: For program point L26-1(lines 25 27) no Hoare annotation was computed. [2020-09-24 22:57:03,789 INFO L268 CegarLoopResult]: For program point L22-2(lines 22 34) no Hoare annotation was computed. [2020-09-24 22:57:03,789 INFO L268 CegarLoopResult]: For program point L22-3(line 22) no Hoare annotation was computed. [2020-09-24 22:57:03,789 INFO L268 CegarLoopResult]: For program point L18(lines 18 21) no Hoare annotation was computed. [2020-09-24 22:57:03,789 INFO L268 CegarLoopResult]: For program point L22-4(line 22) no Hoare annotation was computed. [2020-09-24 22:57:03,790 INFO L268 CegarLoopResult]: For program point L18-1(lines 18 21) no Hoare annotation was computed. [2020-09-24 22:57:03,790 INFO L264 CegarLoopResult]: At program point L22-5(lines 22 34) the Hoare annotation is: (= main_~n~0 main_~k~0) [2020-09-24 22:57:03,790 INFO L268 CegarLoopResult]: For program point L14(line 14) no Hoare annotation was computed. [2020-09-24 22:57:03,790 INFO L268 CegarLoopResult]: For program point L14-1(line 14) no Hoare annotation was computed. [2020-09-24 22:57:03,790 INFO L268 CegarLoopResult]: For program point L14-2(line 14) no Hoare annotation was computed. [2020-09-24 22:57:03,791 INFO L271 CegarLoopResult]: At program point L35(lines 13 37) the Hoare annotation is: true [2020-09-24 22:57:03,791 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-09-24 22:57:03,791 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-09-24 22:57:03,791 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-09-24 22:57:03,791 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-09-24 22:57:03,791 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-09-24 22:57:03,792 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-09-24 22:57:03,824 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 10:57:03 BoogieIcfgContainer [2020-09-24 22:57:03,824 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 22:57:03,829 INFO L168 Benchmark]: Toolchain (without parser) took 15117.22 ms. Allocated memory was 145.8 MB in the beginning and 328.7 MB in the end (delta: 183.0 MB). Free memory was 102.0 MB in the beginning and 274.2 MB in the end (delta: -172.2 MB). Peak memory consumption was 191.8 MB. Max. memory is 7.1 GB. [2020-09-24 22:57:03,830 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 145.8 MB. Free memory was 120.4 MB in the beginning and 120.0 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. [2020-09-24 22:57:03,832 INFO L168 Benchmark]: CACSL2BoogieTranslator took 322.60 ms. Allocated memory is still 145.8 MB. Free memory was 101.6 MB in the beginning and 92.2 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2020-09-24 22:57:03,832 INFO L168 Benchmark]: Boogie Preprocessor took 122.23 ms. Allocated memory was 145.8 MB in the beginning and 201.9 MB in the end (delta: 56.1 MB). Free memory was 92.2 MB in the beginning and 180.1 MB in the end (delta: -88.0 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2020-09-24 22:57:03,837 INFO L168 Benchmark]: RCFGBuilder took 385.00 ms. Allocated memory is still 201.9 MB. Free memory was 180.1 MB in the beginning and 163.6 MB in the end (delta: 16.5 MB). Peak memory consumption was 16.5 MB. Max. memory is 7.1 GB. [2020-09-24 22:57:03,839 INFO L168 Benchmark]: TraceAbstraction took 14257.02 ms. Allocated memory was 201.9 MB in the beginning and 328.7 MB in the end (delta: 126.9 MB). Free memory was 163.6 MB in the beginning and 274.2 MB in the end (delta: -110.6 MB). Peak memory consumption was 197.3 MB. Max. memory is 7.1 GB. [2020-09-24 22:57:03,849 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 145.8 MB. Free memory was 120.4 MB in the beginning and 120.0 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 322.60 ms. Allocated memory is still 145.8 MB. Free memory was 101.6 MB in the beginning and 92.2 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 122.23 ms. Allocated memory was 145.8 MB in the beginning and 201.9 MB in the end (delta: 56.1 MB). Free memory was 92.2 MB in the beginning and 180.1 MB in the end (delta: -88.0 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 385.00 ms. Allocated memory is still 201.9 MB. Free memory was 180.1 MB in the beginning and 163.6 MB in the end (delta: 16.5 MB). Peak memory consumption was 16.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 14257.02 ms. Allocated memory was 201.9 MB in the beginning and 328.7 MB in the end (delta: 126.9 MB). Free memory was 163.6 MB in the beginning and 274.2 MB in the end (delta: -110.6 MB). Peak memory consumption was 197.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: 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: 22]: Loop Invariant Derived loop invariant: n == k - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: ((n <= k && k <= n) && i * 2 == j) || ((2 * i + 1 <= j && n <= k) && k <= n) - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: ((((2 * i + 1 <= k || (2 * i <= j && 2 * i <= k)) && j + 1 <= n) && k <= n) && i * 2 == j) || ((((2 * i + 1 <= k || (2 * i <= j && 2 * i <= k)) && 2 * i + 1 <= j) && j + 1 <= n) && k <= n) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 55 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 13.5s, OverallIterations: 9, TraceHistogramMax: 5, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 488 SDtfs, 230 SDslu, 1940 SDs, 0 SdLazy, 983 SolverSat, 32 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 129 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=120occurred in iteration=6, 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, 9 MinimizatonAttempts, 133 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 12 LocationsWithAnnotation, 37 PreInvPairs, 60 NumberOfFragments, 247 HoareAnnotationTreeSize, 37 FomulaSimplifications, 1320 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 12 FomulaSimplificationsInter, 355 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 11.1s InterpolantComputationTime, 370 NumberOfCodeBlocks, 370 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 361 ConstructedInterpolants, 0 QuantifiedInterpolants, 40081 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 4 PerfectInterpolantSequences, 72/91 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...