/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=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/locks/test_locks_9.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 20:28:12,111 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 20:28:12,116 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 20:28:12,144 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 20:28:12,145 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 20:28:12,146 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 20:28:12,148 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 20:28:12,150 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 20:28:12,152 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 20:28:12,153 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 20:28:12,154 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 20:28:12,155 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 20:28:12,156 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 20:28:12,157 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 20:28:12,158 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 20:28:12,160 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 20:28:12,161 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 20:28:12,162 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 20:28:12,164 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 20:28:12,166 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 20:28:12,168 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 20:28:12,170 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 20:28:12,174 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 20:28:12,175 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 20:28:12,178 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 20:28:12,179 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 20:28:12,179 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 20:28:12,180 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 20:28:12,180 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 20:28:12,182 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 20:28:12,182 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 20:28:12,183 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 20:28:12,184 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 20:28:12,185 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 20:28:12,186 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 20:28:12,186 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 20:28:12,187 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 20:28:12,188 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 20:28:12,188 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 20:28:12,189 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 20:28:12,190 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 20:28:12,191 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 20:28:12,218 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 20:28:12,219 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 20:28:12,220 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 20:28:12,220 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 20:28:12,220 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 20:28:12,221 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 20:28:12,221 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 20:28:12,221 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 20:28:12,221 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 20:28:12,221 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 20:28:12,222 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 20:28:12,222 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 20:28:12,222 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 20:28:12,222 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 20:28:12,222 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 20:28:12,223 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 20:28:12,223 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 20:28:12,223 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 20:28:12,223 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 20:28:12,224 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 20:28:12,224 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 20:28:12,224 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 20:28:12,224 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 20:28:12,224 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 20:28:12,225 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 20:28:12,225 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 20:28:12,225 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 20:28:12,225 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 20:28:12,225 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 20:28:12,226 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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;log-additional-information=true; [2020-09-24 20:28:12,708 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 20:28:12,732 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 20:28:12,737 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 20:28:12,739 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 20:28:12,741 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 20:28:12,742 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/locks/test_locks_9.c [2020-09-24 20:28:12,817 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e65cc6aec/0332f96d55aa488586f5018e077f361c/FLAGa2fb38c9c [2020-09-24 20:28:13,373 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 20:28:13,374 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/locks/test_locks_9.c [2020-09-24 20:28:13,384 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e65cc6aec/0332f96d55aa488586f5018e077f361c/FLAGa2fb38c9c [2020-09-24 20:28:13,697 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e65cc6aec/0332f96d55aa488586f5018e077f361c [2020-09-24 20:28:13,711 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 20:28:13,718 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 20:28:13,724 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 20:28:13,724 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 20:28:13,728 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 20:28:13,730 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:28:13" (1/1) ... [2020-09-24 20:28:13,734 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3666d953 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:28:13, skipping insertion in model container [2020-09-24 20:28:13,735 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:28:13" (1/1) ... [2020-09-24 20:28:13,745 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 20:28:13,780 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 20:28:14,011 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:28:14,017 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 20:28:14,046 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:28:14,062 INFO L208 MainTranslator]: Completed translation [2020-09-24 20:28:14,062 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:28:14 WrapperNode [2020-09-24 20:28:14,062 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 20:28:14,063 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 20:28:14,063 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 20:28:14,064 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 20:28:14,078 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:28:14" (1/1) ... [2020-09-24 20:28:14,078 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:28:14" (1/1) ... [2020-09-24 20:28:14,162 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:28:14" (1/1) ... [2020-09-24 20:28:14,163 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:28:14" (1/1) ... [2020-09-24 20:28:14,169 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:28:14" (1/1) ... [2020-09-24 20:28:14,178 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:28:14" (1/1) ... [2020-09-24 20:28:14,179 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:28:14" (1/1) ... [2020-09-24 20:28:14,182 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 20:28:14,183 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 20:28:14,183 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 20:28:14,183 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 20:28:14,184 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:28:14" (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 20:28:14,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 20:28:14,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 20:28:14,261 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 20:28:14,262 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 20:28:14,262 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 20:28:14,262 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 20:28:14,262 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 20:28:14,262 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 20:28:14,673 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 20:28:14,674 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 20:28:14,680 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:28:14 BoogieIcfgContainer [2020-09-24 20:28:14,681 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 20:28:14,682 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 20:28:14,682 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 20:28:14,686 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 20:28:14,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 08:28:13" (1/3) ... [2020-09-24 20:28:14,687 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4eef1b2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:28:14, skipping insertion in model container [2020-09-24 20:28:14,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:28:14" (2/3) ... [2020-09-24 20:28:14,688 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4eef1b2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:28:14, skipping insertion in model container [2020-09-24 20:28:14,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:28:14" (3/3) ... [2020-09-24 20:28:14,690 INFO L109 eAbstractionObserver]: Analyzing ICFG test_locks_9.c [2020-09-24 20:28:14,701 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 20:28:14,711 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 20:28:14,735 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 20:28:14,767 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 20:28:14,767 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 20:28:14,767 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 20:28:14,767 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 20:28:14,767 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 20:28:14,767 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 20:28:14,768 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 20:28:14,768 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 20:28:14,790 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states. [2020-09-24 20:28:14,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-24 20:28:14,799 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:28:14,800 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:28:14,801 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:28:14,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:28:14,807 INFO L82 PathProgramCache]: Analyzing trace with hash 1511648252, now seen corresponding path program 1 times [2020-09-24 20:28:14,816 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:28:14,817 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [157427555] [2020-09-24 20:28:14,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:28:14,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:15,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:15,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:15,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-24 20:28:15,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:15,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 216 [2020-09-24 20:28:15,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:15,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:28:15,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 62 [2020-09-24 20:28:15,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 20:28:15,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-09-24 20:28:15,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:28:15,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:15,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:15,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:15,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:28:15,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:15,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 20:28:15,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:15,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:28:15,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:28:15,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:28:15,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:28:15,338 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 20:28:15,339 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [157427555] [2020-09-24 20:28:15,341 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:28:15,342 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 20:28:15,343 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845637382] [2020-09-24 20:28:15,350 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 20:28:15,350 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:28:15,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 20:28:15,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 20:28:15,372 INFO L87 Difference]: Start difference. First operand 108 states. Second operand 3 states. [2020-09-24 20:28:15,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:28:15,462 INFO L93 Difference]: Finished difference Result 235 states and 322 transitions. [2020-09-24 20:28:15,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 20:28:15,465 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 67 [2020-09-24 20:28:15,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:28:15,490 INFO L225 Difference]: With dead ends: 235 [2020-09-24 20:28:15,490 INFO L226 Difference]: Without dead ends: 160 [2020-09-24 20:28:15,495 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 20:28:15,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-09-24 20:28:15,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 158. [2020-09-24 20:28:15,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-09-24 20:28:15,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 208 transitions. [2020-09-24 20:28:15,560 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 208 transitions. Word has length 67 [2020-09-24 20:28:15,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:28:15,561 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 208 transitions. [2020-09-24 20:28:15,561 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 20:28:15,562 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 208 transitions. [2020-09-24 20:28:15,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-09-24 20:28:15,564 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:28:15,565 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:28:15,565 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 20:28:15,565 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:28:15,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:28:15,566 INFO L82 PathProgramCache]: Analyzing trace with hash -1267771135, now seen corresponding path program 1 times [2020-09-24 20:28:15,566 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:28:15,566 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1052357939] [2020-09-24 20:28:15,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:28:15,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:15,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:15,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:15,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-24 20:28:15,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:15,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-09-24 20:28:15,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:15,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:28:15,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-09-24 20:28:15,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 20:28:15,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:28:15,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:28:15,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:15,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:15,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:15,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:28:15,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:15,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 20:28:15,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:15,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:28:15,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:28:15,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:28:15,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:28:15,788 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 20:28:15,789 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1052357939] [2020-09-24 20:28:15,789 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:28:15,789 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 20:28:15,790 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643993708] [2020-09-24 20:28:15,792 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 20:28:15,792 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:28:15,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 20:28:15,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 20:28:15,793 INFO L87 Difference]: Start difference. First operand 158 states and 208 transitions. Second operand 3 states. [2020-09-24 20:28:15,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:28:15,823 INFO L93 Difference]: Finished difference Result 192 states and 256 transitions. [2020-09-24 20:28:15,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 20:28:15,824 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 68 [2020-09-24 20:28:15,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:28:15,827 INFO L225 Difference]: With dead ends: 192 [2020-09-24 20:28:15,827 INFO L226 Difference]: Without dead ends: 190 [2020-09-24 20:28:15,829 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 20:28:15,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-09-24 20:28:15,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 158. [2020-09-24 20:28:15,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-09-24 20:28:15,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 207 transitions. [2020-09-24 20:28:15,844 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 207 transitions. Word has length 68 [2020-09-24 20:28:15,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:28:15,845 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 207 transitions. [2020-09-24 20:28:15,858 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 20:28:15,858 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 207 transitions. [2020-09-24 20:28:15,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-09-24 20:28:15,863 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:28:15,865 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:28:15,865 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 20:28:15,865 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:28:15,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:28:15,866 INFO L82 PathProgramCache]: Analyzing trace with hash -383300170, now seen corresponding path program 1 times [2020-09-24 20:28:15,866 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:28:15,866 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [754383263] [2020-09-24 20:28:15,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:28:15,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:15,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:15,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:15,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-24 20:28:15,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:15,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-09-24 20:28:15,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:15,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:28:15,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-09-24 20:28:15,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 20:28:15,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:16,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:28:16,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:16,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:16,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:16,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:28:16,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:16,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:28:16,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:16,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:28:16,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:28:16,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:28:16,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:28:16,049 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 20:28:16,050 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [754383263] [2020-09-24 20:28:16,050 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:28:16,050 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 20:28:16,051 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371776402] [2020-09-24 20:28:16,052 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 20:28:16,052 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:28:16,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 20:28:16,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 20:28:16,053 INFO L87 Difference]: Start difference. First operand 158 states and 207 transitions. Second operand 3 states. [2020-09-24 20:28:16,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:28:16,105 INFO L93 Difference]: Finished difference Result 386 states and 531 transitions. [2020-09-24 20:28:16,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 20:28:16,107 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 68 [2020-09-24 20:28:16,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:28:16,116 INFO L225 Difference]: With dead ends: 386 [2020-09-24 20:28:16,116 INFO L226 Difference]: Without dead ends: 269 [2020-09-24 20:28:16,118 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 20:28:16,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2020-09-24 20:28:16,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 267. [2020-09-24 20:28:16,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2020-09-24 20:28:16,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 360 transitions. [2020-09-24 20:28:16,158 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 360 transitions. Word has length 68 [2020-09-24 20:28:16,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:28:16,158 INFO L479 AbstractCegarLoop]: Abstraction has 267 states and 360 transitions. [2020-09-24 20:28:16,158 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 20:28:16,161 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 360 transitions. [2020-09-24 20:28:16,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-24 20:28:16,165 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:28:16,165 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:28:16,165 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 20:28:16,166 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:28:16,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:28:16,166 INFO L82 PathProgramCache]: Analyzing trace with hash 113752694, now seen corresponding path program 1 times [2020-09-24 20:28:16,167 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:28:16,167 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [920605845] [2020-09-24 20:28:16,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:28:16,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:16,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:16,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:16,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-24 20:28:16,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:16,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-09-24 20:28:16,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:16,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:28:16,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 64 [2020-09-24 20:28:16,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 20:28:16,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:16,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:28:16,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:16,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:16,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:16,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:28:16,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:16,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:28:16,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:16,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:28:16,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:28:16,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:28:16,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:16,286 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 20:28:16,287 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [920605845] [2020-09-24 20:28:16,287 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:28:16,287 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 20:28:16,288 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941788702] [2020-09-24 20:28:16,288 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 20:28:16,288 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:28:16,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 20:28:16,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 20:28:16,289 INFO L87 Difference]: Start difference. First operand 267 states and 360 transitions. Second operand 3 states. [2020-09-24 20:28:16,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:28:16,308 INFO L93 Difference]: Finished difference Result 327 states and 446 transitions. [2020-09-24 20:28:16,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 20:28:16,309 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 69 [2020-09-24 20:28:16,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:28:16,311 INFO L225 Difference]: With dead ends: 327 [2020-09-24 20:28:16,311 INFO L226 Difference]: Without dead ends: 325 [2020-09-24 20:28:16,312 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 20:28:16,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2020-09-24 20:28:16,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 267. [2020-09-24 20:28:16,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2020-09-24 20:28:16,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 358 transitions. [2020-09-24 20:28:16,325 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 358 transitions. Word has length 69 [2020-09-24 20:28:16,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:28:16,326 INFO L479 AbstractCegarLoop]: Abstraction has 267 states and 358 transitions. [2020-09-24 20:28:16,326 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 20:28:16,326 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 358 transitions. [2020-09-24 20:28:16,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-24 20:28:16,328 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:28:16,328 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:28:16,328 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 20:28:16,328 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:28:16,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:28:16,329 INFO L82 PathProgramCache]: Analyzing trace with hash 1002841264, now seen corresponding path program 1 times [2020-09-24 20:28:16,329 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:28:16,329 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1065122868] [2020-09-24 20:28:16,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:28:16,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:16,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:16,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:16,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-24 20:28:16,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:16,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-09-24 20:28:16,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:16,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:28:16,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 64 [2020-09-24 20:28:16,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 20:28:16,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:28:16,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:28:16,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:16,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:16,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:16,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:28:16,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:16,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:28:16,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:16,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:28:16,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:28:16,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:28:16,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:16,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:28:16,493 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1065122868] [2020-09-24 20:28:16,493 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:28:16,493 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 20:28:16,493 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275366582] [2020-09-24 20:28:16,494 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 20:28:16,494 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:28:16,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 20:28:16,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 20:28:16,495 INFO L87 Difference]: Start difference. First operand 267 states and 358 transitions. Second operand 3 states. [2020-09-24 20:28:16,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:28:16,524 INFO L93 Difference]: Finished difference Result 707 states and 976 transitions. [2020-09-24 20:28:16,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 20:28:16,527 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 69 [2020-09-24 20:28:16,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:28:16,530 INFO L225 Difference]: With dead ends: 707 [2020-09-24 20:28:16,531 INFO L226 Difference]: Without dead ends: 481 [2020-09-24 20:28:16,537 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 20:28:16,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2020-09-24 20:28:16,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 479. [2020-09-24 20:28:16,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 479 states. [2020-09-24 20:28:16,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 650 transitions. [2020-09-24 20:28:16,562 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 650 transitions. Word has length 69 [2020-09-24 20:28:16,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:28:16,563 INFO L479 AbstractCegarLoop]: Abstraction has 479 states and 650 transitions. [2020-09-24 20:28:16,564 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 20:28:16,564 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 650 transitions. [2020-09-24 20:28:16,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-09-24 20:28:16,572 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:28:16,572 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:28:16,573 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 20:28:16,573 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:28:16,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:28:16,573 INFO L82 PathProgramCache]: Analyzing trace with hash -8681195, now seen corresponding path program 1 times [2020-09-24 20:28:16,574 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:28:16,574 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [217817896] [2020-09-24 20:28:16,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:28:16,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:16,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:16,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:16,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-24 20:28:16,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:16,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-09-24 20:28:16,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:16,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:28:16,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 65 [2020-09-24 20:28:16,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 20:28:16,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:16,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:28:16,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:16,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:16,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:16,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:28:16,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:16,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 20:28:16,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:16,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:28:16,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:28:16,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:28:16,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:28:16,700 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 20:28:16,700 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [217817896] [2020-09-24 20:28:16,701 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:28:16,701 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 20:28:16,702 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564966820] [2020-09-24 20:28:16,703 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 20:28:16,703 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:28:16,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 20:28:16,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 20:28:16,704 INFO L87 Difference]: Start difference. First operand 479 states and 650 transitions. Second operand 3 states. [2020-09-24 20:28:16,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:28:16,724 INFO L93 Difference]: Finished difference Result 587 states and 804 transitions. [2020-09-24 20:28:16,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 20:28:16,725 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 70 [2020-09-24 20:28:16,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:28:16,728 INFO L225 Difference]: With dead ends: 587 [2020-09-24 20:28:16,729 INFO L226 Difference]: Without dead ends: 585 [2020-09-24 20:28:16,730 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 20:28:16,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2020-09-24 20:28:16,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 479. [2020-09-24 20:28:16,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 479 states. [2020-09-24 20:28:16,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 646 transitions. [2020-09-24 20:28:16,746 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 646 transitions. Word has length 70 [2020-09-24 20:28:16,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:28:16,746 INFO L479 AbstractCegarLoop]: Abstraction has 479 states and 646 transitions. [2020-09-24 20:28:16,746 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 20:28:16,747 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 646 transitions. [2020-09-24 20:28:16,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-09-24 20:28:16,748 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:28:16,748 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:28:16,749 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 20:28:16,749 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:28:16,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:28:16,749 INFO L82 PathProgramCache]: Analyzing trace with hash 1023553130, now seen corresponding path program 1 times [2020-09-24 20:28:16,750 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:28:16,750 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1674354324] [2020-09-24 20:28:16,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:28:16,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:16,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:16,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:16,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-24 20:28:16,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:16,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-09-24 20:28:16,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:16,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:28:16,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 65 [2020-09-24 20:28:16,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 20:28:16,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:16,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:28:16,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:16,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:16,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:16,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:28:16,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:16,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:28:16,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:16,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:28:16,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:28:16,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:28:16,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:28:16,862 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 20:28:16,862 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1674354324] [2020-09-24 20:28:16,862 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:28:16,862 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 20:28:16,863 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094187745] [2020-09-24 20:28:16,863 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 20:28:16,863 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:28:16,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 20:28:16,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 20:28:16,864 INFO L87 Difference]: Start difference. First operand 479 states and 646 transitions. Second operand 3 states. [2020-09-24 20:28:16,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:28:16,890 INFO L93 Difference]: Finished difference Result 1331 states and 1824 transitions. [2020-09-24 20:28:16,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 20:28:16,890 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 70 [2020-09-24 20:28:16,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:28:16,895 INFO L225 Difference]: With dead ends: 1331 [2020-09-24 20:28:16,895 INFO L226 Difference]: Without dead ends: 893 [2020-09-24 20:28:16,896 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 20:28:16,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 893 states. [2020-09-24 20:28:16,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 893 to 891. [2020-09-24 20:28:16,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 891 states. [2020-09-24 20:28:16,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 891 states to 891 states and 1202 transitions. [2020-09-24 20:28:16,919 INFO L78 Accepts]: Start accepts. Automaton has 891 states and 1202 transitions. Word has length 70 [2020-09-24 20:28:16,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:28:16,919 INFO L479 AbstractCegarLoop]: Abstraction has 891 states and 1202 transitions. [2020-09-24 20:28:16,919 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 20:28:16,920 INFO L276 IsEmpty]: Start isEmpty. Operand 891 states and 1202 transitions. [2020-09-24 20:28:16,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-09-24 20:28:16,921 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:28:16,921 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:28:16,921 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 20:28:16,921 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:28:16,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:28:16,922 INFO L82 PathProgramCache]: Analyzing trace with hash 490835914, now seen corresponding path program 1 times [2020-09-24 20:28:16,922 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:28:16,922 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1435264261] [2020-09-24 20:28:16,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:28:16,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:16,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:16,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:16,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-24 20:28:16,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:16,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-09-24 20:28:16,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:16,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:28:16,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-09-24 20:28:16,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 20:28:16,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:17,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:28:17,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:17,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:17,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:17,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:28:17,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:17,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:28:17,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:17,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:28:17,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:28:17,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:28:17,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:17,017 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 20:28:17,017 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1435264261] [2020-09-24 20:28:17,017 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:28:17,017 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 20:28:17,018 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901239103] [2020-09-24 20:28:17,018 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 20:28:17,018 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:28:17,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 20:28:17,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 20:28:17,019 INFO L87 Difference]: Start difference. First operand 891 states and 1202 transitions. Second operand 3 states. [2020-09-24 20:28:17,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:28:17,040 INFO L93 Difference]: Finished difference Result 1087 states and 1476 transitions. [2020-09-24 20:28:17,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 20:28:17,040 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 71 [2020-09-24 20:28:17,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:28:17,047 INFO L225 Difference]: With dead ends: 1087 [2020-09-24 20:28:17,048 INFO L226 Difference]: Without dead ends: 1085 [2020-09-24 20:28:17,048 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 20:28:17,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1085 states. [2020-09-24 20:28:17,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1085 to 891. [2020-09-24 20:28:17,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 891 states. [2020-09-24 20:28:17,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 891 states to 891 states and 1194 transitions. [2020-09-24 20:28:17,069 INFO L78 Accepts]: Start accepts. Automaton has 891 states and 1194 transitions. Word has length 71 [2020-09-24 20:28:17,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:28:17,070 INFO L479 AbstractCegarLoop]: Abstraction has 891 states and 1194 transitions. [2020-09-24 20:28:17,070 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 20:28:17,070 INFO L276 IsEmpty]: Start isEmpty. Operand 891 states and 1194 transitions. [2020-09-24 20:28:17,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-09-24 20:28:17,071 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:28:17,072 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:28:17,072 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 20:28:17,072 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:28:17,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:28:17,072 INFO L82 PathProgramCache]: Analyzing trace with hash 1665621348, now seen corresponding path program 1 times [2020-09-24 20:28:17,073 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:28:17,073 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1811227476] [2020-09-24 20:28:17,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:28:17,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:17,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:17,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:17,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-24 20:28:17,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:17,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-09-24 20:28:17,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:17,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:28:17,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-09-24 20:28:17,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 20:28:17,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:17,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:28:17,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:17,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:17,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:17,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:28:17,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:17,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:28:17,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:17,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:28:17,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:28:17,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:28:17,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:17,164 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 20:28:17,164 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1811227476] [2020-09-24 20:28:17,164 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:28:17,164 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 20:28:17,165 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204558351] [2020-09-24 20:28:17,165 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 20:28:17,165 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:28:17,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 20:28:17,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 20:28:17,166 INFO L87 Difference]: Start difference. First operand 891 states and 1194 transitions. Second operand 3 states. [2020-09-24 20:28:17,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:28:17,198 INFO L93 Difference]: Finished difference Result 2543 states and 3436 transitions. [2020-09-24 20:28:17,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 20:28:17,198 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 71 [2020-09-24 20:28:17,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:28:17,206 INFO L225 Difference]: With dead ends: 2543 [2020-09-24 20:28:17,206 INFO L226 Difference]: Without dead ends: 1693 [2020-09-24 20:28:17,209 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 20:28:17,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1693 states. [2020-09-24 20:28:17,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1693 to 1691. [2020-09-24 20:28:17,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1691 states. [2020-09-24 20:28:17,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1691 states to 1691 states and 2250 transitions. [2020-09-24 20:28:17,249 INFO L78 Accepts]: Start accepts. Automaton has 1691 states and 2250 transitions. Word has length 71 [2020-09-24 20:28:17,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:28:17,249 INFO L479 AbstractCegarLoop]: Abstraction has 1691 states and 2250 transitions. [2020-09-24 20:28:17,250 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 20:28:17,250 INFO L276 IsEmpty]: Start isEmpty. Operand 1691 states and 2250 transitions. [2020-09-24 20:28:17,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-09-24 20:28:17,251 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:28:17,252 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:28:17,252 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 20:28:17,252 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:28:17,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:28:17,253 INFO L82 PathProgramCache]: Analyzing trace with hash -1204002519, now seen corresponding path program 1 times [2020-09-24 20:28:17,253 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:28:17,253 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1838548409] [2020-09-24 20:28:17,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:28:17,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:17,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:17,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:17,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-24 20:28:17,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:17,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-24 20:28:17,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:17,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:28:17,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-09-24 20:28:17,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 20:28:17,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:17,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:28:17,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:17,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:17,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:17,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:28:17,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:17,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:28:17,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:17,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:28:17,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:28:17,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:28:17,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:17,341 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 20:28:17,342 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1838548409] [2020-09-24 20:28:17,342 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:28:17,342 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 20:28:17,343 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468866081] [2020-09-24 20:28:17,343 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 20:28:17,343 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:28:17,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 20:28:17,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 20:28:17,344 INFO L87 Difference]: Start difference. First operand 1691 states and 2250 transitions. Second operand 3 states. [2020-09-24 20:28:17,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:28:17,370 INFO L93 Difference]: Finished difference Result 2047 states and 2732 transitions. [2020-09-24 20:28:17,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 20:28:17,371 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 72 [2020-09-24 20:28:17,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:28:17,380 INFO L225 Difference]: With dead ends: 2047 [2020-09-24 20:28:17,380 INFO L226 Difference]: Without dead ends: 2045 [2020-09-24 20:28:17,381 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 20:28:17,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2045 states. [2020-09-24 20:28:17,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2045 to 1691. [2020-09-24 20:28:17,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1691 states. [2020-09-24 20:28:17,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1691 states to 1691 states and 2234 transitions. [2020-09-24 20:28:17,438 INFO L78 Accepts]: Start accepts. Automaton has 1691 states and 2234 transitions. Word has length 72 [2020-09-24 20:28:17,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:28:17,438 INFO L479 AbstractCegarLoop]: Abstraction has 1691 states and 2234 transitions. [2020-09-24 20:28:17,438 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 20:28:17,439 INFO L276 IsEmpty]: Start isEmpty. Operand 1691 states and 2234 transitions. [2020-09-24 20:28:17,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-09-24 20:28:17,440 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:28:17,440 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:28:17,441 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 20:28:17,441 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:28:17,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:28:17,441 INFO L82 PathProgramCache]: Analyzing trace with hash 94899998, now seen corresponding path program 1 times [2020-09-24 20:28:17,441 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:28:17,442 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [259627783] [2020-09-24 20:28:17,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:28:17,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:17,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:17,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:17,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-24 20:28:17,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:17,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-24 20:28:17,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:17,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:28:17,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-09-24 20:28:17,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 20:28:17,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:17,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:28:17,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:17,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:17,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:17,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:28:17,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:17,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:28:17,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:17,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:28:17,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:28:17,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:28:17,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:17,530 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 20:28:17,531 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [259627783] [2020-09-24 20:28:17,531 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:28:17,531 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 20:28:17,532 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329729842] [2020-09-24 20:28:17,532 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 20:28:17,532 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:28:17,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 20:28:17,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 20:28:17,533 INFO L87 Difference]: Start difference. First operand 1691 states and 2234 transitions. Second operand 3 states. [2020-09-24 20:28:17,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:28:17,579 INFO L93 Difference]: Finished difference Result 4895 states and 6492 transitions. [2020-09-24 20:28:17,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 20:28:17,580 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 72 [2020-09-24 20:28:17,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:28:17,593 INFO L225 Difference]: With dead ends: 4895 [2020-09-24 20:28:17,594 INFO L226 Difference]: Without dead ends: 3245 [2020-09-24 20:28:17,597 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 20:28:17,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3245 states. [2020-09-24 20:28:17,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3245 to 3243. [2020-09-24 20:28:17,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3243 states. [2020-09-24 20:28:17,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3243 states to 3243 states and 4234 transitions. [2020-09-24 20:28:17,674 INFO L78 Accepts]: Start accepts. Automaton has 3243 states and 4234 transitions. Word has length 72 [2020-09-24 20:28:17,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:28:17,674 INFO L479 AbstractCegarLoop]: Abstraction has 3243 states and 4234 transitions. [2020-09-24 20:28:17,674 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 20:28:17,675 INFO L276 IsEmpty]: Start isEmpty. Operand 3243 states and 4234 transitions. [2020-09-24 20:28:17,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-09-24 20:28:17,677 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:28:17,677 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:28:17,678 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-24 20:28:17,678 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:28:17,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:28:17,678 INFO L82 PathProgramCache]: Analyzing trace with hash 2090581278, now seen corresponding path program 1 times [2020-09-24 20:28:17,678 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:28:17,679 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1171015557] [2020-09-24 20:28:17,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:28:17,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:17,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:17,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:17,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-24 20:28:17,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:17,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-24 20:28:17,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:17,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:28:17,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-09-24 20:28:17,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 20:28:17,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:17,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:28:17,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:17,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:17,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:17,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:28:17,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:17,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:28:17,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:17,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:28:17,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:28:17,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:28:17,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:17,766 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 20:28:17,766 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1171015557] [2020-09-24 20:28:17,766 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:28:17,766 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 20:28:17,767 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988787361] [2020-09-24 20:28:17,767 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 20:28:17,767 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:28:17,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 20:28:17,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 20:28:17,768 INFO L87 Difference]: Start difference. First operand 3243 states and 4234 transitions. Second operand 3 states. [2020-09-24 20:28:17,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:28:17,811 INFO L93 Difference]: Finished difference Result 3887 states and 5068 transitions. [2020-09-24 20:28:17,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 20:28:17,811 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 73 [2020-09-24 20:28:17,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:28:17,830 INFO L225 Difference]: With dead ends: 3887 [2020-09-24 20:28:17,830 INFO L226 Difference]: Without dead ends: 3885 [2020-09-24 20:28:17,832 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 20:28:17,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3885 states. [2020-09-24 20:28:17,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3885 to 3243. [2020-09-24 20:28:17,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3243 states. [2020-09-24 20:28:17,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3243 states to 3243 states and 4202 transitions. [2020-09-24 20:28:17,926 INFO L78 Accepts]: Start accepts. Automaton has 3243 states and 4202 transitions. Word has length 73 [2020-09-24 20:28:17,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:28:17,926 INFO L479 AbstractCegarLoop]: Abstraction has 3243 states and 4202 transitions. [2020-09-24 20:28:17,926 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 20:28:17,926 INFO L276 IsEmpty]: Start isEmpty. Operand 3243 states and 4202 transitions. [2020-09-24 20:28:17,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-09-24 20:28:17,929 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:28:17,929 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:28:17,929 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-24 20:28:17,930 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:28:17,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:28:17,930 INFO L82 PathProgramCache]: Analyzing trace with hash -1352821224, now seen corresponding path program 1 times [2020-09-24 20:28:17,930 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:28:17,930 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [743264980] [2020-09-24 20:28:17,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:28:17,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:17,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:18,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:18,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-24 20:28:18,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:18,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-09-24 20:28:18,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:18,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:28:18,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-09-24 20:28:18,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 20:28:18,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:18,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:28:18,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:18,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:18,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:18,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:28:18,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:18,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:28:18,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:18,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:28:18,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:28:18,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:28:18,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:18,055 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 20:28:18,056 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [743264980] [2020-09-24 20:28:18,056 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:28:18,056 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 20:28:18,057 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340783592] [2020-09-24 20:28:18,057 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 20:28:18,057 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:28:18,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 20:28:18,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 20:28:18,058 INFO L87 Difference]: Start difference. First operand 3243 states and 4202 transitions. Second operand 3 states. [2020-09-24 20:28:18,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:28:18,152 INFO L93 Difference]: Finished difference Result 9455 states and 12268 transitions. [2020-09-24 20:28:18,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 20:28:18,153 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 73 [2020-09-24 20:28:18,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:28:18,178 INFO L225 Difference]: With dead ends: 9455 [2020-09-24 20:28:18,178 INFO L226 Difference]: Without dead ends: 6253 [2020-09-24 20:28:18,190 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 20:28:18,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6253 states. [2020-09-24 20:28:18,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6253 to 6251. [2020-09-24 20:28:18,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6251 states. [2020-09-24 20:28:18,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6251 states to 6251 states and 7978 transitions. [2020-09-24 20:28:18,366 INFO L78 Accepts]: Start accepts. Automaton has 6251 states and 7978 transitions. Word has length 73 [2020-09-24 20:28:18,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:28:18,367 INFO L479 AbstractCegarLoop]: Abstraction has 6251 states and 7978 transitions. [2020-09-24 20:28:18,367 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 20:28:18,367 INFO L276 IsEmpty]: Start isEmpty. Operand 6251 states and 7978 transitions. [2020-09-24 20:28:18,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-09-24 20:28:18,378 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:28:18,378 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:28:18,378 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-24 20:28:18,378 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:28:18,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:28:18,379 INFO L82 PathProgramCache]: Analyzing trace with hash 1012461522, now seen corresponding path program 1 times [2020-09-24 20:28:18,379 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:28:18,380 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [161928624] [2020-09-24 20:28:18,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:28:18,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:18,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:18,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:18,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-24 20:28:18,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:18,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-09-24 20:28:18,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:18,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:28:18,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-09-24 20:28:18,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 20:28:18,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:18,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:28:18,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:18,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:18,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:18,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:28:18,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:18,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:28:18,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:18,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:28:18,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:28:18,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:28:18,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:18,493 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 20:28:18,493 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [161928624] [2020-09-24 20:28:18,493 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:28:18,493 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 20:28:18,494 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820484405] [2020-09-24 20:28:18,494 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 20:28:18,494 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:28:18,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 20:28:18,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 20:28:18,495 INFO L87 Difference]: Start difference. First operand 6251 states and 7978 transitions. Second operand 3 states. [2020-09-24 20:28:18,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:28:18,663 INFO L93 Difference]: Finished difference Result 18287 states and 23340 transitions. [2020-09-24 20:28:18,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 20:28:18,664 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 74 [2020-09-24 20:28:18,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:28:18,722 INFO L225 Difference]: With dead ends: 18287 [2020-09-24 20:28:18,722 INFO L226 Difference]: Without dead ends: 12077 [2020-09-24 20:28:18,741 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 20:28:18,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12077 states. [2020-09-24 20:28:19,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12077 to 12075. [2020-09-24 20:28:19,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12075 states. [2020-09-24 20:28:19,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12075 states to 12075 states and 15146 transitions. [2020-09-24 20:28:19,045 INFO L78 Accepts]: Start accepts. Automaton has 12075 states and 15146 transitions. Word has length 74 [2020-09-24 20:28:19,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:28:19,045 INFO L479 AbstractCegarLoop]: Abstraction has 12075 states and 15146 transitions. [2020-09-24 20:28:19,045 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 20:28:19,045 INFO L276 IsEmpty]: Start isEmpty. Operand 12075 states and 15146 transitions. [2020-09-24 20:28:19,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-09-24 20:28:19,055 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:28:19,056 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:28:19,056 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-24 20:28:19,056 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:28:19,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:28:19,057 INFO L82 PathProgramCache]: Analyzing trace with hash 1143464253, now seen corresponding path program 1 times [2020-09-24 20:28:19,057 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:28:19,057 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1705913257] [2020-09-24 20:28:19,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:28:19,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:19,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:19,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:19,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-24 20:28:19,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:19,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-09-24 20:28:19,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:19,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:28:19,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-09-24 20:28:19,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 20:28:19,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 20:28:19,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:28:19,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:19,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:19,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:19,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:28:19,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:19,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:28:19,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:19,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:28:19,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:28:19,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:28:19,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:19,186 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 20:28:19,186 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1705913257] [2020-09-24 20:28:19,186 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:28:19,187 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 20:28:19,187 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023434261] [2020-09-24 20:28:19,187 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 20:28:19,188 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:28:19,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 20:28:19,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 20:28:19,188 INFO L87 Difference]: Start difference. First operand 12075 states and 15146 transitions. Second operand 3 states. [2020-09-24 20:28:19,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:28:19,282 INFO L93 Difference]: Finished difference Result 14255 states and 17708 transitions. [2020-09-24 20:28:19,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 20:28:19,282 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 74 [2020-09-24 20:28:19,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:28:19,310 INFO L225 Difference]: With dead ends: 14255 [2020-09-24 20:28:19,310 INFO L226 Difference]: Without dead ends: 14253 [2020-09-24 20:28:19,316 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 20:28:19,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14253 states. [2020-09-24 20:28:19,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14253 to 12075. [2020-09-24 20:28:19,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12075 states. [2020-09-24 20:28:19,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12075 states to 12075 states and 15018 transitions. [2020-09-24 20:28:19,635 INFO L78 Accepts]: Start accepts. Automaton has 12075 states and 15018 transitions. Word has length 74 [2020-09-24 20:28:19,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:28:19,636 INFO L479 AbstractCegarLoop]: Abstraction has 12075 states and 15018 transitions. [2020-09-24 20:28:19,636 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 20:28:19,636 INFO L276 IsEmpty]: Start isEmpty. Operand 12075 states and 15018 transitions. [2020-09-24 20:28:19,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-09-24 20:28:19,643 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:28:19,644 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:28:19,644 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-24 20:28:19,644 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:28:19,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:28:19,644 INFO L82 PathProgramCache]: Analyzing trace with hash 1847607922, now seen corresponding path program 1 times [2020-09-24 20:28:19,645 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:28:19,645 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1991913067] [2020-09-24 20:28:19,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:28:19,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:19,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:19,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:19,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-24 20:28:19,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:19,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-09-24 20:28:19,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:19,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:28:19,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-09-24 20:28:19,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 20:28:19,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:19,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:28:19,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:19,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:19,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:19,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:28:19,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:19,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:28:19,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:19,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:28:19,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:28:19,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:28:19,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:19,734 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 20:28:19,735 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1991913067] [2020-09-24 20:28:19,735 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:28:19,735 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 20:28:19,736 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513375038] [2020-09-24 20:28:19,736 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 20:28:19,736 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:28:19,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 20:28:19,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 20:28:19,737 INFO L87 Difference]: Start difference. First operand 12075 states and 15018 transitions. Second operand 3 states. [2020-09-24 20:28:19,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:28:19,827 INFO L93 Difference]: Finished difference Result 14127 states and 17324 transitions. [2020-09-24 20:28:19,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 20:28:19,827 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 75 [2020-09-24 20:28:19,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:28:19,853 INFO L225 Difference]: With dead ends: 14127 [2020-09-24 20:28:19,854 INFO L226 Difference]: Without dead ends: 14125 [2020-09-24 20:28:19,860 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 20:28:19,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14125 states. [2020-09-24 20:28:20,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14125 to 12075. [2020-09-24 20:28:20,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12075 states. [2020-09-24 20:28:20,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12075 states to 12075 states and 14890 transitions. [2020-09-24 20:28:20,540 INFO L78 Accepts]: Start accepts. Automaton has 12075 states and 14890 transitions. Word has length 75 [2020-09-24 20:28:20,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:28:20,540 INFO L479 AbstractCegarLoop]: Abstraction has 12075 states and 14890 transitions. [2020-09-24 20:28:20,540 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 20:28:20,540 INFO L276 IsEmpty]: Start isEmpty. Operand 12075 states and 14890 transitions. [2020-09-24 20:28:20,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-09-24 20:28:20,548 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:28:20,548 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:28:20,548 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-24 20:28:20,549 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:28:20,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:28:20,549 INFO L82 PathProgramCache]: Analyzing trace with hash 1321782988, now seen corresponding path program 1 times [2020-09-24 20:28:20,549 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:28:20,549 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1410106876] [2020-09-24 20:28:20,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:28:20,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:20,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:20,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:20,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-24 20:28:20,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:20,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-09-24 20:28:20,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:20,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:28:20,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-09-24 20:28:20,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 20:28:20,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:20,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:28:20,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:20,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:20,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:20,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:28:20,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:20,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 20:28:20,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:20,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:28:20,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:28:20,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:28:20,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:20,665 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 20:28:20,665 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1410106876] [2020-09-24 20:28:20,665 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:28:20,665 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 20:28:20,666 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127119564] [2020-09-24 20:28:20,666 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 20:28:20,666 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:28:20,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 20:28:20,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 20:28:20,668 INFO L87 Difference]: Start difference. First operand 12075 states and 14890 transitions. Second operand 3 states. [2020-09-24 20:28:20,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:28:20,860 INFO L93 Difference]: Finished difference Result 35373 states and 43563 transitions. [2020-09-24 20:28:20,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 20:28:20,861 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 75 [2020-09-24 20:28:20,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:28:20,886 INFO L225 Difference]: With dead ends: 35373 [2020-09-24 20:28:20,886 INFO L226 Difference]: Without dead ends: 12075 [2020-09-24 20:28:20,924 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 20:28:20,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12075 states. [2020-09-24 20:28:21,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12075 to 12075. [2020-09-24 20:28:21,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12075 states. [2020-09-24 20:28:21,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12075 states to 12075 states and 14378 transitions. [2020-09-24 20:28:21,125 INFO L78 Accepts]: Start accepts. Automaton has 12075 states and 14378 transitions. Word has length 75 [2020-09-24 20:28:21,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:28:21,126 INFO L479 AbstractCegarLoop]: Abstraction has 12075 states and 14378 transitions. [2020-09-24 20:28:21,126 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 20:28:21,126 INFO L276 IsEmpty]: Start isEmpty. Operand 12075 states and 14378 transitions. [2020-09-24 20:28:21,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-09-24 20:28:21,196 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:28:21,197 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:28:21,198 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-09-24 20:28:21,198 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:28:21,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:28:21,198 INFO L82 PathProgramCache]: Analyzing trace with hash -2093741743, now seen corresponding path program 1 times [2020-09-24 20:28:21,198 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:28:21,199 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [759012107] [2020-09-24 20:28:21,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:28:21,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:21,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:21,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:21,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-24 20:28:21,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:21,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-24 20:28:21,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:21,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:28:21,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-09-24 20:28:21,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 20:28:21,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:21,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:28:21,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:21,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:21,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:21,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:28:21,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:21,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:28:21,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:21,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:28:21,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:28:21,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:28:21,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:21,280 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 20:28:21,280 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [759012107] [2020-09-24 20:28:21,281 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:28:21,281 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 20:28:21,281 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093053764] [2020-09-24 20:28:21,281 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 20:28:21,282 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:28:21,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 20:28:21,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 20:28:21,282 INFO L87 Difference]: Start difference. First operand 12075 states and 14378 transitions. Second operand 3 states. [2020-09-24 20:28:21,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:28:21,349 INFO L93 Difference]: Finished difference Result 12075 states and 14378 transitions. [2020-09-24 20:28:21,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 20:28:21,350 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 76 [2020-09-24 20:28:21,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:28:21,351 INFO L225 Difference]: With dead ends: 12075 [2020-09-24 20:28:21,351 INFO L226 Difference]: Without dead ends: 0 [2020-09-24 20:28:21,370 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 20:28:21,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-24 20:28:21,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-24 20:28:21,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-24 20:28:21,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-24 20:28:21,371 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 76 [2020-09-24 20:28:21,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:28:21,371 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-24 20:28:21,371 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 20:28:21,371 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-24 20:28:21,371 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-24 20:28:21,372 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-09-24 20:28:21,375 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-24 20:28:21,433 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-24 20:28:21,433 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-24 20:28:21,433 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-24 20:28:21,433 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-24 20:28:21,434 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-24 20:28:21,434 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-24 20:28:21,434 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 4 149) no Hoare annotation was computed. [2020-09-24 20:28:21,434 INFO L268 CegarLoopResult]: For program point L85-1(lines 36 144) no Hoare annotation was computed. [2020-09-24 20:28:21,434 INFO L268 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-09-24 20:28:21,434 INFO L268 CegarLoopResult]: For program point L135(line 135) no Hoare annotation was computed. [2020-09-24 20:28:21,435 INFO L268 CegarLoopResult]: For program point L69-1(lines 36 144) no Hoare annotation was computed. [2020-09-24 20:28:21,435 INFO L268 CegarLoopResult]: For program point L86(line 86) no Hoare annotation was computed. [2020-09-24 20:28:21,435 INFO L268 CegarLoopResult]: For program point L119-1(lines 36 144) no Hoare annotation was computed. [2020-09-24 20:28:21,435 INFO L268 CegarLoopResult]: For program point L53(line 53) no Hoare annotation was computed. [2020-09-24 20:28:21,437 INFO L268 CegarLoopResult]: For program point L136(line 136) no Hoare annotation was computed. [2020-09-24 20:28:21,437 INFO L268 CegarLoopResult]: For program point L70(line 70) no Hoare annotation was computed. [2020-09-24 20:28:21,437 INFO L268 CegarLoopResult]: For program point L37(line 37) no Hoare annotation was computed. [2020-09-24 20:28:21,437 INFO L268 CegarLoopResult]: For program point L37-1(line 37) no Hoare annotation was computed. [2020-09-24 20:28:21,438 INFO L268 CegarLoopResult]: For program point L37-2(line 37) no Hoare annotation was computed. [2020-09-24 20:28:21,438 INFO L268 CegarLoopResult]: For program point L120(line 120) no Hoare annotation was computed. [2020-09-24 20:28:21,438 INFO L268 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed. [2020-09-24 20:28:21,438 INFO L268 CegarLoopResult]: For program point L21-1(line 21) no Hoare annotation was computed. [2020-09-24 20:28:21,438 INFO L268 CegarLoopResult]: For program point L21-2(line 21) no Hoare annotation was computed. [2020-09-24 20:28:21,438 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 4 149) no Hoare annotation was computed. [2020-09-24 20:28:21,439 INFO L268 CegarLoopResult]: For program point L104-1(lines 36 144) no Hoare annotation was computed. [2020-09-24 20:28:21,439 INFO L268 CegarLoopResult]: For program point L38(lines 38 40) no Hoare annotation was computed. [2020-09-24 20:28:21,439 INFO L268 CegarLoopResult]: For program point L121(line 121) no Hoare annotation was computed. [2020-09-24 20:28:21,439 INFO L268 CegarLoopResult]: For program point L55(line 55) no Hoare annotation was computed. [2020-09-24 20:28:21,439 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-09-24 20:28:21,440 INFO L268 CegarLoopResult]: For program point L105(line 105) no Hoare annotation was computed. [2020-09-24 20:28:21,440 INFO L268 CegarLoopResult]: For program point L6(line 6) no Hoare annotation was computed. [2020-09-24 20:28:21,440 INFO L268 CegarLoopResult]: For program point L6-1(line 6) no Hoare annotation was computed. [2020-09-24 20:28:21,440 INFO L268 CegarLoopResult]: For program point L89-1(lines 36 144) no Hoare annotation was computed. [2020-09-24 20:28:21,440 INFO L268 CegarLoopResult]: For program point L106(line 106) no Hoare annotation was computed. [2020-09-24 20:28:21,440 INFO L271 CegarLoopResult]: At program point L139-1(lines 36 144) the Hoare annotation is: true [2020-09-24 20:28:21,441 INFO L268 CegarLoopResult]: For program point L73-1(lines 36 144) no Hoare annotation was computed. [2020-09-24 20:28:21,441 INFO L268 CegarLoopResult]: For program point L7(line 7) no Hoare annotation was computed. [2020-09-24 20:28:21,441 INFO L268 CegarLoopResult]: For program point L90(line 90) no Hoare annotation was computed. [2020-09-24 20:28:21,441 INFO L268 CegarLoopResult]: For program point L57(line 57) no Hoare annotation was computed. [2020-09-24 20:28:21,441 INFO L268 CegarLoopResult]: For program point L24(line 24) no Hoare annotation was computed. [2020-09-24 20:28:21,441 INFO L268 CegarLoopResult]: For program point L24-1(line 24) no Hoare annotation was computed. [2020-09-24 20:28:21,441 INFO L268 CegarLoopResult]: For program point L24-2(line 24) no Hoare annotation was computed. [2020-09-24 20:28:21,442 INFO L268 CegarLoopResult]: For program point L140(line 140) no Hoare annotation was computed. [2020-09-24 20:28:21,442 INFO L264 CegarLoopResult]: At program point L140-1(lines 5 149) the Hoare annotation is: false [2020-09-24 20:28:21,442 INFO L268 CegarLoopResult]: For program point L74(line 74) no Hoare annotation was computed. [2020-09-24 20:28:21,442 INFO L268 CegarLoopResult]: For program point L41(line 41) no Hoare annotation was computed. [2020-09-24 20:28:21,442 INFO L268 CegarLoopResult]: For program point L124-1(lines 36 144) no Hoare annotation was computed. [2020-09-24 20:28:21,442 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-09-24 20:28:21,442 INFO L268 CegarLoopResult]: For program point L141(line 141) no Hoare annotation was computed. [2020-09-24 20:28:21,443 INFO L268 CegarLoopResult]: For program point L9(line 9) no Hoare annotation was computed. [2020-09-24 20:28:21,443 INFO L268 CegarLoopResult]: For program point L9-1(line 9) no Hoare annotation was computed. [2020-09-24 20:28:21,443 INFO L268 CegarLoopResult]: For program point L9-2(line 9) no Hoare annotation was computed. [2020-09-24 20:28:21,443 INFO L268 CegarLoopResult]: For program point L125(line 125) no Hoare annotation was computed. [2020-09-24 20:28:21,443 INFO L268 CegarLoopResult]: For program point L109-1(lines 36 144) no Hoare annotation was computed. [2020-09-24 20:28:21,443 INFO L268 CegarLoopResult]: For program point L43(line 43) no Hoare annotation was computed. [2020-09-24 20:28:21,443 INFO L268 CegarLoopResult]: For program point L10(line 10) no Hoare annotation was computed. [2020-09-24 20:28:21,445 INFO L268 CegarLoopResult]: For program point L126(line 126) no Hoare annotation was computed. [2020-09-24 20:28:21,445 INFO L268 CegarLoopResult]: For program point L93-1(lines 36 144) no Hoare annotation was computed. [2020-09-24 20:28:21,445 INFO L268 CegarLoopResult]: For program point L27(line 27) no Hoare annotation was computed. [2020-09-24 20:28:21,445 INFO L268 CegarLoopResult]: For program point L27-1(line 27) no Hoare annotation was computed. [2020-09-24 20:28:21,445 INFO L268 CegarLoopResult]: For program point L27-2(line 27) no Hoare annotation was computed. [2020-09-24 20:28:21,445 INFO L268 CegarLoopResult]: For program point L110(line 110) no Hoare annotation was computed. [2020-09-24 20:28:21,446 INFO L268 CegarLoopResult]: For program point L77-1(lines 36 144) no Hoare annotation was computed. [2020-09-24 20:28:21,446 INFO L268 CegarLoopResult]: For program point L94(line 94) no Hoare annotation was computed. [2020-09-24 20:28:21,446 INFO L268 CegarLoopResult]: For program point L61(lines 61 63) no Hoare annotation was computed. [2020-09-24 20:28:21,448 INFO L268 CegarLoopResult]: For program point L28(line 28) no Hoare annotation was computed. [2020-09-24 20:28:21,449 INFO L268 CegarLoopResult]: For program point L61-2(lines 36 144) no Hoare annotation was computed. [2020-09-24 20:28:21,449 INFO L268 CegarLoopResult]: For program point L111(line 111) no Hoare annotation was computed. [2020-09-24 20:28:21,449 INFO L268 CegarLoopResult]: For program point L78(line 78) no Hoare annotation was computed. [2020-09-24 20:28:21,449 INFO L268 CegarLoopResult]: For program point L45(line 45) no Hoare annotation was computed. [2020-09-24 20:28:21,449 INFO L268 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-09-24 20:28:21,449 INFO L268 CegarLoopResult]: For program point L12-1(line 12) no Hoare annotation was computed. [2020-09-24 20:28:21,449 INFO L268 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-09-24 20:28:21,449 INFO L268 CegarLoopResult]: For program point L62(line 62) no Hoare annotation was computed. [2020-09-24 20:28:21,450 INFO L271 CegarLoopResult]: At program point L145(lines 5 149) the Hoare annotation is: true [2020-09-24 20:28:21,450 INFO L268 CegarLoopResult]: For program point L13(line 13) no Hoare annotation was computed. [2020-09-24 20:28:21,450 INFO L268 CegarLoopResult]: For program point L129-1(lines 36 144) no Hoare annotation was computed. [2020-09-24 20:28:21,450 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 147) no Hoare annotation was computed. [2020-09-24 20:28:21,450 INFO L268 CegarLoopResult]: For program point L30(line 30) no Hoare annotation was computed. [2020-09-24 20:28:21,450 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 4 149) the Hoare annotation is: true [2020-09-24 20:28:21,450 INFO L268 CegarLoopResult]: For program point L30-1(line 30) no Hoare annotation was computed. [2020-09-24 20:28:21,450 INFO L268 CegarLoopResult]: For program point L30-2(line 30) no Hoare annotation was computed. [2020-09-24 20:28:21,451 INFO L268 CegarLoopResult]: For program point L47(line 47) no Hoare annotation was computed. [2020-09-24 20:28:21,451 INFO L268 CegarLoopResult]: For program point L130(line 130) no Hoare annotation was computed. [2020-09-24 20:28:21,451 INFO L268 CegarLoopResult]: For program point L31(line 31) no Hoare annotation was computed. [2020-09-24 20:28:21,451 INFO L268 CegarLoopResult]: For program point L114-1(lines 36 144) no Hoare annotation was computed. [2020-09-24 20:28:21,451 INFO L268 CegarLoopResult]: For program point L81-1(lines 36 144) no Hoare annotation was computed. [2020-09-24 20:28:21,451 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-09-24 20:28:21,451 INFO L268 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2020-09-24 20:28:21,451 INFO L268 CegarLoopResult]: For program point L15-2(line 15) no Hoare annotation was computed. [2020-09-24 20:28:21,452 INFO L268 CegarLoopResult]: For program point L131(line 131) no Hoare annotation was computed. [2020-09-24 20:28:21,452 INFO L268 CegarLoopResult]: For program point L65-1(lines 36 144) no Hoare annotation was computed. [2020-09-24 20:28:21,452 INFO L268 CegarLoopResult]: For program point L148(line 148) no Hoare annotation was computed. [2020-09-24 20:28:21,452 INFO L268 CegarLoopResult]: For program point L115(line 115) no Hoare annotation was computed. [2020-09-24 20:28:21,452 INFO L268 CegarLoopResult]: For program point L82(line 82) no Hoare annotation was computed. [2020-09-24 20:28:21,453 INFO L268 CegarLoopResult]: For program point L49(line 49) no Hoare annotation was computed. [2020-09-24 20:28:21,453 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-24 20:28:21,453 INFO L268 CegarLoopResult]: For program point L66(line 66) no Hoare annotation was computed. [2020-09-24 20:28:21,453 INFO L268 CegarLoopResult]: For program point L99-1(lines 36 144) no Hoare annotation was computed. [2020-09-24 20:28:21,453 INFO L268 CegarLoopResult]: For program point L116(line 116) no Hoare annotation was computed. [2020-09-24 20:28:21,455 INFO L268 CegarLoopResult]: For program point L100(line 100) no Hoare annotation was computed. [2020-09-24 20:28:21,456 INFO L268 CegarLoopResult]: For program point L34(line 34) no Hoare annotation was computed. [2020-09-24 20:28:21,456 INFO L268 CegarLoopResult]: For program point L51(line 51) no Hoare annotation was computed. [2020-09-24 20:28:21,456 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-09-24 20:28:21,456 INFO L268 CegarLoopResult]: For program point L18-1(line 18) no Hoare annotation was computed. [2020-09-24 20:28:21,456 INFO L268 CegarLoopResult]: For program point L18-2(line 18) no Hoare annotation was computed. [2020-09-24 20:28:21,457 INFO L268 CegarLoopResult]: For program point L101(line 101) no Hoare annotation was computed. [2020-09-24 20:28:21,457 INFO L268 CegarLoopResult]: For program point L134-1(lines 36 144) no Hoare annotation was computed. [2020-09-24 20:28:21,489 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 08:28:21 BoogieIcfgContainer [2020-09-24 20:28:21,489 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 20:28:21,493 INFO L168 Benchmark]: Toolchain (without parser) took 7778.99 ms. Allocated memory was 138.4 MB in the beginning and 526.4 MB in the end (delta: 388.0 MB). Free memory was 101.9 MB in the beginning and 376.4 MB in the end (delta: -274.4 MB). Peak memory consumption was 113.6 MB. Max. memory is 7.1 GB. [2020-09-24 20:28:21,496 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-24 20:28:21,506 INFO L168 Benchmark]: CACSL2BoogieTranslator took 339.27 ms. Allocated memory is still 138.4 MB. Free memory was 101.3 MB in the beginning and 90.8 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2020-09-24 20:28:21,507 INFO L168 Benchmark]: Boogie Preprocessor took 119.18 ms. Allocated memory was 138.4 MB in the beginning and 200.3 MB in the end (delta: 61.9 MB). Free memory was 90.8 MB in the beginning and 178.2 MB in the end (delta: -87.4 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. [2020-09-24 20:28:21,508 INFO L168 Benchmark]: RCFGBuilder took 497.92 ms. Allocated memory is still 200.3 MB. Free memory was 178.2 MB in the beginning and 154.4 MB in the end (delta: 23.8 MB). Peak memory consumption was 23.8 MB. Max. memory is 7.1 GB. [2020-09-24 20:28:21,509 INFO L168 Benchmark]: TraceAbstraction took 6807.21 ms. Allocated memory was 200.3 MB in the beginning and 526.4 MB in the end (delta: 326.1 MB). Free memory was 154.4 MB in the beginning and 376.4 MB in the end (delta: -221.9 MB). Peak memory consumption was 104.2 MB. Max. memory is 7.1 GB. [2020-09-24 20:28:21,517 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 339.27 ms. Allocated memory is still 138.4 MB. Free memory was 101.3 MB in the beginning and 90.8 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 119.18 ms. Allocated memory was 138.4 MB in the beginning and 200.3 MB in the end (delta: 61.9 MB). Free memory was 90.8 MB in the beginning and 178.2 MB in the end (delta: -87.4 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 497.92 ms. Allocated memory is still 200.3 MB. Free memory was 178.2 MB in the beginning and 154.4 MB in the end (delta: 23.8 MB). Peak memory consumption was 23.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 6807.21 ms. Allocated memory was 200.3 MB in the beginning and 526.4 MB in the end (delta: 326.1 MB). Free memory was 154.4 MB in the beginning and 376.4 MB in the end (delta: -221.9 MB). Peak memory consumption was 104.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 147]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 108 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.6s, OverallIterations: 18, TraceHistogramMax: 1, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2944 SDtfs, 1068 SDslu, 2096 SDs, 0 SdLazy, 89 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 90 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12075occurred in iteration=14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.1s AutomataMinimizationTime, 18 MinimizatonAttempts, 5630 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 521 NumberOfFragments, 7 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 1287 NumberOfCodeBlocks, 1287 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 1269 ConstructedInterpolants, 0 QuantifiedInterpolants, 113709 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 18 InterpolantComputations, 18 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...