/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=1.0 --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_10.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 08:57:10,990 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 08:57:10,994 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 08:57:11,041 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 08:57:11,041 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 08:57:11,049 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 08:57:11,051 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 08:57:11,055 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 08:57:11,057 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 08:57:11,060 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 08:57:11,061 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 08:57:11,062 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 08:57:11,062 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 08:57:11,065 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 08:57:11,067 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 08:57:11,069 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 08:57:11,071 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 08:57:11,072 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 08:57:11,074 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 08:57:11,082 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 08:57:11,085 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 08:57:11,086 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 08:57:11,087 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 08:57:11,088 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 08:57:11,101 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 08:57:11,101 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 08:57:11,101 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 08:57:11,102 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 08:57:11,103 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 08:57:11,104 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 08:57:11,104 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 08:57:11,105 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 08:57:11,106 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 08:57:11,106 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 08:57:11,107 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 08:57:11,108 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 08:57:11,108 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 08:57:11,109 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 08:57:11,109 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 08:57:11,110 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 08:57:11,110 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 08:57:11,111 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 08:57:11,136 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 08:57:11,136 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 08:57:11,138 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 08:57:11,138 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 08:57:11,138 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 08:57:11,138 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 08:57:11,138 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 08:57:11,139 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 08:57:11,139 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 08:57:11,139 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 08:57:11,139 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 08:57:11,139 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 08:57:11,140 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 08:57:11,140 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 08:57:11,140 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 08:57:11,140 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 08:57:11,140 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 08:57:11,141 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 08:57:11,141 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 08:57:11,141 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 08:57:11,141 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 08:57:11,141 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 08:57:11,142 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 08:57:11,142 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 08:57:11,142 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 08:57:11,142 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 08:57:11,142 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 08:57:11,143 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 08:57:11,143 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 08:57:11,143 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; [2020-09-25 08:57:11,653 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 08:57:11,691 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 08:57:11,698 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 08:57:11,700 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 08:57:11,702 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 08:57:11,703 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/locks/test_locks_10.c [2020-09-25 08:57:11,795 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/69cd61991/af77907972c04780be6ea0a6f55b8377/FLAGdc2fe6dcc [2020-09-25 08:57:12,360 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 08:57:12,361 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/locks/test_locks_10.c [2020-09-25 08:57:12,370 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/69cd61991/af77907972c04780be6ea0a6f55b8377/FLAGdc2fe6dcc [2020-09-25 08:57:12,726 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/69cd61991/af77907972c04780be6ea0a6f55b8377 [2020-09-25 08:57:12,742 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 08:57:12,749 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 08:57:12,750 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 08:57:12,750 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 08:57:12,756 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 08:57:12,757 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 08:57:12" (1/1) ... [2020-09-25 08:57:12,763 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6fa69d28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:57:12, skipping insertion in model container [2020-09-25 08:57:12,763 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 08:57:12" (1/1) ... [2020-09-25 08:57:12,773 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 08:57:12,813 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 08:57:13,046 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 08:57:13,053 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 08:57:13,086 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 08:57:13,108 INFO L208 MainTranslator]: Completed translation [2020-09-25 08:57:13,109 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:57:13 WrapperNode [2020-09-25 08:57:13,109 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 08:57:13,110 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 08:57:13,110 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 08:57:13,110 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 08:57:13,207 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:57:13" (1/1) ... [2020-09-25 08:57:13,208 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:57:13" (1/1) ... [2020-09-25 08:57:13,215 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:57:13" (1/1) ... [2020-09-25 08:57:13,215 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:57:13" (1/1) ... [2020-09-25 08:57:13,221 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:57:13" (1/1) ... [2020-09-25 08:57:13,230 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:57:13" (1/1) ... [2020-09-25 08:57:13,232 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:57:13" (1/1) ... [2020-09-25 08:57:13,235 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 08:57:13,236 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 08:57:13,236 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 08:57:13,236 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 08:57:13,238 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:57:13" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 08:57:13,329 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 08:57:13,329 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 08:57:13,329 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 08:57:13,330 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 08:57:13,330 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 08:57:13,330 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 08:57:13,330 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 08:57:13,331 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 08:57:13,760 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 08:57:13,760 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 08:57:13,767 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 08:57:13 BoogieIcfgContainer [2020-09-25 08:57:13,767 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 08:57:13,769 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 08:57:13,769 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 08:57:13,773 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 08:57:13,773 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 08:57:12" (1/3) ... [2020-09-25 08:57:13,775 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b29ac45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 08:57:13, skipping insertion in model container [2020-09-25 08:57:13,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:57:13" (2/3) ... [2020-09-25 08:57:13,775 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b29ac45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 08:57:13, skipping insertion in model container [2020-09-25 08:57:13,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 08:57:13" (3/3) ... [2020-09-25 08:57:13,778 INFO L109 eAbstractionObserver]: Analyzing ICFG test_locks_10.c [2020-09-25 08:57:13,791 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 08:57:13,801 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 08:57:13,820 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 08:57:13,853 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 08:57:13,853 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 08:57:13,853 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 08:57:13,854 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 08:57:13,854 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 08:57:13,854 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 08:57:13,854 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 08:57:13,854 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 08:57:13,879 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states. [2020-09-25 08:57:13,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-09-25 08:57:13,889 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:57:13,890 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] [2020-09-25 08:57:13,891 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:57:13,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:57:13,898 INFO L82 PathProgramCache]: Analyzing trace with hash -74913912, now seen corresponding path program 1 times [2020-09-25 08:57:13,907 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:57:13,908 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1483778092] [2020-09-25 08:57:13,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:57:14,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:14,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:14,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:14,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 08:57:14,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:14,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 250 [2020-09-25 08:57:14,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:14,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:14,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:57:14,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-09-25 08:57:14,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 08:57:14,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 08:57:14,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:57:14,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:14,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:14,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:14,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:57:14,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:14,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 08:57:14,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:14,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:14,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:57:14,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:57:14,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:57:14,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:14,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 08:57:14,460 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1483778092] [2020-09-25 08:57:14,462 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:57:14,462 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 08:57:14,464 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221435635] [2020-09-25 08:57:14,472 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 08:57:14,472 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:57:14,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 08:57:14,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 08:57:14,494 INFO L87 Difference]: Start difference. First operand 118 states. Second operand 3 states. [2020-09-25 08:57:14,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:57:14,583 INFO L93 Difference]: Finished difference Result 257 states and 353 transitions. [2020-09-25 08:57:14,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 08:57:14,585 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 73 [2020-09-25 08:57:14,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:57:14,603 INFO L225 Difference]: With dead ends: 257 [2020-09-25 08:57:14,603 INFO L226 Difference]: Without dead ends: 176 [2020-09-25 08:57:14,609 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 08:57:14,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2020-09-25 08:57:14,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 174. [2020-09-25 08:57:14,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-09-25 08:57:14,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 230 transitions. [2020-09-25 08:57:14,676 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 230 transitions. Word has length 73 [2020-09-25 08:57:14,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:57:14,677 INFO L479 AbstractCegarLoop]: Abstraction has 174 states and 230 transitions. [2020-09-25 08:57:14,677 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 08:57:14,677 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 230 transitions. [2020-09-25 08:57:14,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-09-25 08:57:14,680 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:57:14,681 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] [2020-09-25 08:57:14,681 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 08:57:14,681 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:57:14,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:57:14,682 INFO L82 PathProgramCache]: Analyzing trace with hash 328701044, now seen corresponding path program 1 times [2020-09-25 08:57:14,682 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:57:14,683 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [181155859] [2020-09-25 08:57:14,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:57:14,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:14,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:14,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:14,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-25 08:57:14,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:14,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-09-25 08:57:14,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:14,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:14,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:57:14,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-09-25 08:57:14,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 08:57:14,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:14,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:57:14,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:14,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:14,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:14,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:57:14,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:14,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 08:57:14,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:14,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:14,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:57:14,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:57:14,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:57:14,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 08:57:14,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 08:57:14,960 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [181155859] [2020-09-25 08:57:14,961 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:57:14,961 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 08:57:14,961 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281744343] [2020-09-25 08:57:14,964 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 08:57:14,965 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:57:14,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 08:57:14,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 08:57:14,966 INFO L87 Difference]: Start difference. First operand 174 states and 230 transitions. Second operand 3 states. [2020-09-25 08:57:15,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:57:15,006 INFO L93 Difference]: Finished difference Result 211 states and 283 transitions. [2020-09-25 08:57:15,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 08:57:15,007 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 74 [2020-09-25 08:57:15,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:57:15,015 INFO L225 Difference]: With dead ends: 211 [2020-09-25 08:57:15,015 INFO L226 Difference]: Without dead ends: 209 [2020-09-25 08:57:15,016 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 08:57:15,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2020-09-25 08:57:15,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 174. [2020-09-25 08:57:15,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-09-25 08:57:15,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 229 transitions. [2020-09-25 08:57:15,039 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 229 transitions. Word has length 74 [2020-09-25 08:57:15,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:57:15,046 INFO L479 AbstractCegarLoop]: Abstraction has 174 states and 229 transitions. [2020-09-25 08:57:15,046 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 08:57:15,046 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 229 transitions. [2020-09-25 08:57:15,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-09-25 08:57:15,052 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:57:15,052 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] [2020-09-25 08:57:15,053 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 08:57:15,053 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:57:15,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:57:15,053 INFO L82 PathProgramCache]: Analyzing trace with hash 1972879950, now seen corresponding path program 1 times [2020-09-25 08:57:15,054 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:57:15,054 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [169771336] [2020-09-25 08:57:15,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:57:15,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:15,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:15,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:15,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-25 08:57:15,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:15,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-09-25 08:57:15,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:15,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:15,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:57:15,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-09-25 08:57:15,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 08:57:15,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:15,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:57:15,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:15,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:15,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:15,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:57:15,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:15,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 08:57:15,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:15,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:15,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:57:15,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:57:15,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:57:15,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:15,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 08:57:15,249 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [169771336] [2020-09-25 08:57:15,249 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:57:15,249 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 08:57:15,249 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973180416] [2020-09-25 08:57:15,250 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 08:57:15,251 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:57:15,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 08:57:15,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 08:57:15,251 INFO L87 Difference]: Start difference. First operand 174 states and 229 transitions. Second operand 3 states. [2020-09-25 08:57:15,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:57:15,302 INFO L93 Difference]: Finished difference Result 426 states and 589 transitions. [2020-09-25 08:57:15,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 08:57:15,303 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 74 [2020-09-25 08:57:15,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:57:15,307 INFO L225 Difference]: With dead ends: 426 [2020-09-25 08:57:15,308 INFO L226 Difference]: Without dead ends: 297 [2020-09-25 08:57:15,311 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 08:57:15,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2020-09-25 08:57:15,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 295. [2020-09-25 08:57:15,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295 states. [2020-09-25 08:57:15,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 400 transitions. [2020-09-25 08:57:15,356 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 400 transitions. Word has length 74 [2020-09-25 08:57:15,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:57:15,357 INFO L479 AbstractCegarLoop]: Abstraction has 295 states and 400 transitions. [2020-09-25 08:57:15,357 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 08:57:15,357 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 400 transitions. [2020-09-25 08:57:15,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-09-25 08:57:15,359 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:57:15,360 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] [2020-09-25 08:57:15,360 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 08:57:15,360 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:57:15,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:57:15,361 INFO L82 PathProgramCache]: Analyzing trace with hash -618815907, now seen corresponding path program 1 times [2020-09-25 08:57:15,361 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:57:15,361 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [958801108] [2020-09-25 08:57:15,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:57:15,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:15,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:15,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:15,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-25 08:57:15,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:15,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-09-25 08:57:15,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:15,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:15,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:57:15,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-09-25 08:57:15,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 08:57:15,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:15,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:57:15,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:15,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:15,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:15,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:57:15,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:15,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:57:15,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:15,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:15,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:57:15,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:57:15,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:57:15,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:15,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 08:57:15,482 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [958801108] [2020-09-25 08:57:15,483 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:57:15,483 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 08:57:15,483 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688811824] [2020-09-25 08:57:15,484 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 08:57:15,484 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:57:15,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 08:57:15,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 08:57:15,485 INFO L87 Difference]: Start difference. First operand 295 states and 400 transitions. Second operand 3 states. [2020-09-25 08:57:15,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:57:15,503 INFO L93 Difference]: Finished difference Result 361 states and 496 transitions. [2020-09-25 08:57:15,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 08:57:15,504 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 75 [2020-09-25 08:57:15,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:57:15,506 INFO L225 Difference]: With dead ends: 361 [2020-09-25 08:57:15,507 INFO L226 Difference]: Without dead ends: 359 [2020-09-25 08:57:15,507 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 08:57:15,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2020-09-25 08:57:15,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 295. [2020-09-25 08:57:15,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295 states. [2020-09-25 08:57:15,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 398 transitions. [2020-09-25 08:57:15,521 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 398 transitions. Word has length 75 [2020-09-25 08:57:15,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:57:15,522 INFO L479 AbstractCegarLoop]: Abstraction has 295 states and 398 transitions. [2020-09-25 08:57:15,522 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 08:57:15,522 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 398 transitions. [2020-09-25 08:57:15,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-09-25 08:57:15,524 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:57:15,525 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] [2020-09-25 08:57:15,525 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 08:57:15,525 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:57:15,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:57:15,526 INFO L82 PathProgramCache]: Analyzing trace with hash 1029980604, now seen corresponding path program 1 times [2020-09-25 08:57:15,526 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:57:15,526 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2132155836] [2020-09-25 08:57:15,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:57:15,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:15,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:15,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:15,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-25 08:57:15,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:15,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-09-25 08:57:15,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:15,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:15,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:57:15,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-09-25 08:57:15,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 08:57:15,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:15,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:57:15,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:15,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:15,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:15,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:57:15,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:15,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:57:15,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:15,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:15,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:57:15,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:57:15,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:57:15,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:15,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 08:57:15,650 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2132155836] [2020-09-25 08:57:15,650 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:57:15,650 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 08:57:15,651 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249366913] [2020-09-25 08:57:15,651 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 08:57:15,651 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:57:15,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 08:57:15,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 08:57:15,652 INFO L87 Difference]: Start difference. First operand 295 states and 398 transitions. Second operand 3 states. [2020-09-25 08:57:15,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:57:15,685 INFO L93 Difference]: Finished difference Result 783 states and 1088 transitions. [2020-09-25 08:57:15,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 08:57:15,686 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 75 [2020-09-25 08:57:15,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:57:15,690 INFO L225 Difference]: With dead ends: 783 [2020-09-25 08:57:15,690 INFO L226 Difference]: Without dead ends: 533 [2020-09-25 08:57:15,695 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 08:57:15,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2020-09-25 08:57:15,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 531. [2020-09-25 08:57:15,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 531 states. [2020-09-25 08:57:15,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 531 states to 531 states and 726 transitions. [2020-09-25 08:57:15,722 INFO L78 Accepts]: Start accepts. Automaton has 531 states and 726 transitions. Word has length 75 [2020-09-25 08:57:15,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:57:15,722 INFO L479 AbstractCegarLoop]: Abstraction has 531 states and 726 transitions. [2020-09-25 08:57:15,722 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 08:57:15,723 INFO L276 IsEmpty]: Start isEmpty. Operand 531 states and 726 transitions. [2020-09-25 08:57:15,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-09-25 08:57:15,729 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:57:15,729 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] [2020-09-25 08:57:15,730 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 08:57:15,730 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:57:15,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:57:15,730 INFO L82 PathProgramCache]: Analyzing trace with hash 72930056, now seen corresponding path program 1 times [2020-09-25 08:57:15,731 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:57:15,731 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1837458421] [2020-09-25 08:57:15,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:57:15,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:15,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:15,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:15,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-25 08:57:15,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:15,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-09-25 08:57:15,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:15,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:15,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:57:15,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-09-25 08:57:15,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 08:57:15,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:15,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:57:15,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:15,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:15,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:15,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:57:15,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:15,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:57:15,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:15,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:15,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:57:15,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:57:15,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:57:15,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:15,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 08:57:15,890 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1837458421] [2020-09-25 08:57:15,891 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:57:15,891 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 08:57:15,891 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645700117] [2020-09-25 08:57:15,892 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 08:57:15,892 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:57:15,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 08:57:15,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 08:57:15,893 INFO L87 Difference]: Start difference. First operand 531 states and 726 transitions. Second operand 3 states. [2020-09-25 08:57:15,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:57:15,930 INFO L93 Difference]: Finished difference Result 651 states and 900 transitions. [2020-09-25 08:57:15,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 08:57:15,930 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 76 [2020-09-25 08:57:15,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:57:15,934 INFO L225 Difference]: With dead ends: 651 [2020-09-25 08:57:15,934 INFO L226 Difference]: Without dead ends: 649 [2020-09-25 08:57:15,935 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 08:57:15,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 649 states. [2020-09-25 08:57:15,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 649 to 531. [2020-09-25 08:57:15,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 531 states. [2020-09-25 08:57:15,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 531 states to 531 states and 722 transitions. [2020-09-25 08:57:15,953 INFO L78 Accepts]: Start accepts. Automaton has 531 states and 722 transitions. Word has length 76 [2020-09-25 08:57:15,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:57:15,954 INFO L479 AbstractCegarLoop]: Abstraction has 531 states and 722 transitions. [2020-09-25 08:57:15,954 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 08:57:15,954 INFO L276 IsEmpty]: Start isEmpty. Operand 531 states and 722 transitions. [2020-09-25 08:57:15,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-09-25 08:57:15,956 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:57:15,956 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] [2020-09-25 08:57:15,956 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 08:57:15,956 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:57:15,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:57:15,957 INFO L82 PathProgramCache]: Analyzing trace with hash 1864872322, now seen corresponding path program 1 times [2020-09-25 08:57:15,957 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:57:15,957 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1229517284] [2020-09-25 08:57:15,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:57:15,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:15,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:16,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:16,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-25 08:57:16,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:16,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-09-25 08:57:16,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:16,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:16,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:57:16,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-09-25 08:57:16,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 08:57:16,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:57:16,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:57:16,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:16,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:16,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:16,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:57:16,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:16,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:57:16,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:16,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:16,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:57:16,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:57:16,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:57:16,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:16,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 08:57:16,057 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1229517284] [2020-09-25 08:57:16,057 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:57:16,058 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 08:57:16,058 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078994759] [2020-09-25 08:57:16,058 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 08:57:16,059 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:57:16,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 08:57:16,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 08:57:16,059 INFO L87 Difference]: Start difference. First operand 531 states and 722 transitions. Second operand 3 states. [2020-09-25 08:57:16,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:57:16,088 INFO L93 Difference]: Finished difference Result 1479 states and 2044 transitions. [2020-09-25 08:57:16,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 08:57:16,089 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 76 [2020-09-25 08:57:16,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:57:16,094 INFO L225 Difference]: With dead ends: 1479 [2020-09-25 08:57:16,095 INFO L226 Difference]: Without dead ends: 993 [2020-09-25 08:57:16,097 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 08:57:16,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 993 states. [2020-09-25 08:57:16,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 993 to 991. [2020-09-25 08:57:16,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 991 states. [2020-09-25 08:57:16,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 991 states to 991 states and 1350 transitions. [2020-09-25 08:57:16,123 INFO L78 Accepts]: Start accepts. Automaton has 991 states and 1350 transitions. Word has length 76 [2020-09-25 08:57:16,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:57:16,124 INFO L479 AbstractCegarLoop]: Abstraction has 991 states and 1350 transitions. [2020-09-25 08:57:16,124 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 08:57:16,124 INFO L276 IsEmpty]: Start isEmpty. Operand 991 states and 1350 transitions. [2020-09-25 08:57:16,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-09-25 08:57:16,125 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:57:16,125 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, 1] [2020-09-25 08:57:16,126 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 08:57:16,126 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:57:16,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:57:16,126 INFO L82 PathProgramCache]: Analyzing trace with hash 1976712176, now seen corresponding path program 1 times [2020-09-25 08:57:16,127 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:57:16,127 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [377157836] [2020-09-25 08:57:16,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:57:16,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:16,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:16,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:16,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-09-25 08:57:16,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:16,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-09-25 08:57:16,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:16,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:16,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:57:16,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-09-25 08:57:16,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 08:57:16,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:57:16,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:57:16,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:16,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:16,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:16,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:57:16,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:16,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:57:16,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:16,217 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:16,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:57:16,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:57:16,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:57:16,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:16,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 08:57:16,222 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [377157836] [2020-09-25 08:57:16,222 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:57:16,222 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 08:57:16,223 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449971477] [2020-09-25 08:57:16,223 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 08:57:16,223 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:57:16,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 08:57:16,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 08:57:16,224 INFO L87 Difference]: Start difference. First operand 991 states and 1350 transitions. Second operand 3 states. [2020-09-25 08:57:16,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:57:16,261 INFO L93 Difference]: Finished difference Result 2835 states and 3896 transitions. [2020-09-25 08:57:16,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 08:57:16,261 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2020-09-25 08:57:16,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:57:16,271 INFO L225 Difference]: With dead ends: 2835 [2020-09-25 08:57:16,271 INFO L226 Difference]: Without dead ends: 1889 [2020-09-25 08:57:16,273 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 08:57:16,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1889 states. [2020-09-25 08:57:16,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1889 to 1887. [2020-09-25 08:57:16,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1887 states. [2020-09-25 08:57:16,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1887 states to 1887 states and 2558 transitions. [2020-09-25 08:57:16,315 INFO L78 Accepts]: Start accepts. Automaton has 1887 states and 2558 transitions. Word has length 77 [2020-09-25 08:57:16,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:57:16,315 INFO L479 AbstractCegarLoop]: Abstraction has 1887 states and 2558 transitions. [2020-09-25 08:57:16,316 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 08:57:16,316 INFO L276 IsEmpty]: Start isEmpty. Operand 1887 states and 2558 transitions. [2020-09-25 08:57:16,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-09-25 08:57:16,318 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:57:16,318 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, 1] [2020-09-25 08:57:16,318 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 08:57:16,318 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:57:16,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:57:16,319 INFO L82 PathProgramCache]: Analyzing trace with hash 42218801, now seen corresponding path program 1 times [2020-09-25 08:57:16,319 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:57:16,319 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [587138556] [2020-09-25 08:57:16,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:57:16,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:16,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:16,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:16,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-09-25 08:57:16,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:16,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-25 08:57:16,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:16,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:16,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:57:16,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-09-25 08:57:16,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 08:57:16,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:57:16,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:57:16,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:16,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:16,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:16,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:57:16,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:16,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:57:16,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:16,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:16,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:57:16,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:57:16,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:57:16,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:16,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 08:57:16,412 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [587138556] [2020-09-25 08:57:16,412 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:57:16,413 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 08:57:16,413 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615935082] [2020-09-25 08:57:16,413 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 08:57:16,413 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:57:16,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 08:57:16,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 08:57:16,414 INFO L87 Difference]: Start difference. First operand 1887 states and 2558 transitions. Second operand 3 states. [2020-09-25 08:57:16,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:57:16,443 INFO L93 Difference]: Finished difference Result 2307 states and 3152 transitions. [2020-09-25 08:57:16,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 08:57:16,443 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2020-09-25 08:57:16,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:57:16,454 INFO L225 Difference]: With dead ends: 2307 [2020-09-25 08:57:16,455 INFO L226 Difference]: Without dead ends: 2305 [2020-09-25 08:57:16,456 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 08:57:16,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2305 states. [2020-09-25 08:57:16,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2305 to 1887. [2020-09-25 08:57:16,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1887 states. [2020-09-25 08:57:16,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1887 states to 1887 states and 2542 transitions. [2020-09-25 08:57:16,537 INFO L78 Accepts]: Start accepts. Automaton has 1887 states and 2542 transitions. Word has length 77 [2020-09-25 08:57:16,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:57:16,538 INFO L479 AbstractCegarLoop]: Abstraction has 1887 states and 2542 transitions. [2020-09-25 08:57:16,538 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 08:57:16,538 INFO L276 IsEmpty]: Start isEmpty. Operand 1887 states and 2542 transitions. [2020-09-25 08:57:16,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-09-25 08:57:16,541 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:57:16,541 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, 1, 1] [2020-09-25 08:57:16,541 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 08:57:16,541 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:57:16,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:57:16,542 INFO L82 PathProgramCache]: Analyzing trace with hash -909829732, now seen corresponding path program 1 times [2020-09-25 08:57:16,542 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:57:16,542 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [491181362] [2020-09-25 08:57:16,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:57:16,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:16,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:16,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:16,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 08:57:16,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:16,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-09-25 08:57:16,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:16,636 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:16,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:57:16,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-09-25 08:57:16,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 08:57:16,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:16,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:57:16,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:16,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:16,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:16,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:57:16,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:16,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:57:16,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:16,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:16,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:57:16,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:57:16,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:57:16,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:16,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 08:57:16,665 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [491181362] [2020-09-25 08:57:16,665 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:57:16,665 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 08:57:16,665 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322616399] [2020-09-25 08:57:16,666 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 08:57:16,666 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:57:16,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 08:57:16,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 08:57:16,666 INFO L87 Difference]: Start difference. First operand 1887 states and 2542 transitions. Second operand 3 states. [2020-09-25 08:57:16,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:57:16,699 INFO L93 Difference]: Finished difference Result 2291 states and 3104 transitions. [2020-09-25 08:57:16,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 08:57:16,700 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 78 [2020-09-25 08:57:16,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:57:16,710 INFO L225 Difference]: With dead ends: 2291 [2020-09-25 08:57:16,711 INFO L226 Difference]: Without dead ends: 2289 [2020-09-25 08:57:16,712 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 08:57:16,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2289 states. [2020-09-25 08:57:16,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2289 to 1887. [2020-09-25 08:57:16,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1887 states. [2020-09-25 08:57:16,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1887 states to 1887 states and 2526 transitions. [2020-09-25 08:57:16,774 INFO L78 Accepts]: Start accepts. Automaton has 1887 states and 2526 transitions. Word has length 78 [2020-09-25 08:57:16,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:57:16,774 INFO L479 AbstractCegarLoop]: Abstraction has 1887 states and 2526 transitions. [2020-09-25 08:57:16,774 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 08:57:16,774 INFO L276 IsEmpty]: Start isEmpty. Operand 1887 states and 2526 transitions. [2020-09-25 08:57:16,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-09-25 08:57:16,777 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:57:16,777 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, 1, 1] [2020-09-25 08:57:16,777 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 08:57:16,777 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:57:16,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:57:16,778 INFO L82 PathProgramCache]: Analyzing trace with hash 1148780726, now seen corresponding path program 1 times [2020-09-25 08:57:16,778 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:57:16,778 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [828722463] [2020-09-25 08:57:16,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:57:16,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:16,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:16,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:16,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 08:57:16,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:16,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-09-25 08:57:16,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:16,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:16,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:57:16,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-09-25 08:57:16,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 08:57:16,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:16,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:57:16,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:16,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:16,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:16,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:57:16,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:16,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:57:16,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:16,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:16,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:57:16,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:57:16,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:57:16,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:57:16,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 08:57:16,882 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [828722463] [2020-09-25 08:57:16,882 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:57:16,882 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 08:57:16,883 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970305838] [2020-09-25 08:57:16,883 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 08:57:16,883 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:57:16,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 08:57:16,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 08:57:16,884 INFO L87 Difference]: Start difference. First operand 1887 states and 2526 transitions. Second operand 3 states. [2020-09-25 08:57:16,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:57:16,935 INFO L93 Difference]: Finished difference Result 5475 states and 7360 transitions. [2020-09-25 08:57:16,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 08:57:16,936 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 78 [2020-09-25 08:57:16,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:57:16,954 INFO L225 Difference]: With dead ends: 5475 [2020-09-25 08:57:16,954 INFO L226 Difference]: Without dead ends: 3633 [2020-09-25 08:57:16,958 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 08:57:16,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3633 states. [2020-09-25 08:57:17,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3633 to 3631. [2020-09-25 08:57:17,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3631 states. [2020-09-25 08:57:17,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3631 states to 3631 states and 4814 transitions. [2020-09-25 08:57:17,049 INFO L78 Accepts]: Start accepts. Automaton has 3631 states and 4814 transitions. Word has length 78 [2020-09-25 08:57:17,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:57:17,076 INFO L479 AbstractCegarLoop]: Abstraction has 3631 states and 4814 transitions. [2020-09-25 08:57:17,076 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 08:57:17,076 INFO L276 IsEmpty]: Start isEmpty. Operand 3631 states and 4814 transitions. [2020-09-25 08:57:17,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-09-25 08:57:17,080 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:57:17,080 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, 1, 1, 1] [2020-09-25 08:57:17,080 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 08:57:17,080 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:57:17,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:57:17,081 INFO L82 PathProgramCache]: Analyzing trace with hash 1252709924, now seen corresponding path program 1 times [2020-09-25 08:57:17,081 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:57:17,081 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [629664697] [2020-09-25 08:57:17,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:57:17,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:17,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:17,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:17,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-25 08:57:17,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:17,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-25 08:57:17,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:17,143 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:17,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:57:17,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-09-25 08:57:17,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 08:57:17,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:57:17,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:57:17,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:17,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:17,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:17,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:57:17,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:17,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:57:17,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:17,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:17,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:57:17,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:57:17,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:57:17,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:17,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 08:57:17,169 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [629664697] [2020-09-25 08:57:17,170 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:57:17,170 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 08:57:17,170 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635371856] [2020-09-25 08:57:17,170 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 08:57:17,171 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:57:17,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 08:57:17,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 08:57:17,171 INFO L87 Difference]: Start difference. First operand 3631 states and 4814 transitions. Second operand 3 states. [2020-09-25 08:57:17,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:57:17,237 INFO L93 Difference]: Finished difference Result 10611 states and 14096 transitions. [2020-09-25 08:57:17,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 08:57:17,238 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 79 [2020-09-25 08:57:17,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:57:17,269 INFO L225 Difference]: With dead ends: 10611 [2020-09-25 08:57:17,269 INFO L226 Difference]: Without dead ends: 7025 [2020-09-25 08:57:17,277 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 08:57:17,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7025 states. [2020-09-25 08:57:17,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7025 to 7023. [2020-09-25 08:57:17,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7023 states. [2020-09-25 08:57:17,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7023 states to 7023 states and 9198 transitions. [2020-09-25 08:57:17,445 INFO L78 Accepts]: Start accepts. Automaton has 7023 states and 9198 transitions. Word has length 79 [2020-09-25 08:57:17,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:57:17,446 INFO L479 AbstractCegarLoop]: Abstraction has 7023 states and 9198 transitions. [2020-09-25 08:57:17,446 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 08:57:17,446 INFO L276 IsEmpty]: Start isEmpty. Operand 7023 states and 9198 transitions. [2020-09-25 08:57:17,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-09-25 08:57:17,451 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:57:17,451 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, 1, 1, 1] [2020-09-25 08:57:17,452 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-25 08:57:17,452 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:57:17,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:57:17,453 INFO L82 PathProgramCache]: Analyzing trace with hash -358562811, now seen corresponding path program 1 times [2020-09-25 08:57:17,453 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:57:17,453 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [872251840] [2020-09-25 08:57:17,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:57:17,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:17,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:17,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:17,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-25 08:57:17,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:17,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-09-25 08:57:17,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:17,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:17,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:57:17,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-09-25 08:57:17,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 08:57:17,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:17,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:57:17,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:17,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:17,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:17,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:57:17,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:17,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:57:17,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:17,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:17,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:57:17,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:57:17,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:57:17,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:17,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 08:57:17,560 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [872251840] [2020-09-25 08:57:17,560 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:57:17,560 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 08:57:17,560 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962660890] [2020-09-25 08:57:17,561 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 08:57:17,561 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:57:17,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 08:57:17,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 08:57:17,562 INFO L87 Difference]: Start difference. First operand 7023 states and 9198 transitions. Second operand 3 states. [2020-09-25 08:57:17,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:57:17,648 INFO L93 Difference]: Finished difference Result 8435 states and 11056 transitions. [2020-09-25 08:57:17,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 08:57:17,649 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 79 [2020-09-25 08:57:17,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:57:17,691 INFO L225 Difference]: With dead ends: 8435 [2020-09-25 08:57:17,691 INFO L226 Difference]: Without dead ends: 8433 [2020-09-25 08:57:17,695 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 08:57:17,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8433 states. [2020-09-25 08:57:17,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8433 to 7023. [2020-09-25 08:57:17,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7023 states. [2020-09-25 08:57:17,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7023 states to 7023 states and 9134 transitions. [2020-09-25 08:57:17,912 INFO L78 Accepts]: Start accepts. Automaton has 7023 states and 9134 transitions. Word has length 79 [2020-09-25 08:57:17,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:57:17,912 INFO L479 AbstractCegarLoop]: Abstraction has 7023 states and 9134 transitions. [2020-09-25 08:57:17,913 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 08:57:17,913 INFO L276 IsEmpty]: Start isEmpty. Operand 7023 states and 9134 transitions. [2020-09-25 08:57:17,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-09-25 08:57:17,921 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:57:17,921 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:57:17,921 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-25 08:57:17,922 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:57:17,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:57:17,922 INFO L82 PathProgramCache]: Analyzing trace with hash -449157072, now seen corresponding path program 1 times [2020-09-25 08:57:17,922 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:57:17,923 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [127300946] [2020-09-25 08:57:17,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:57:17,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:17,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:17,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:17,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-25 08:57:17,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:17,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-09-25 08:57:17,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:17,989 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:17,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:57:17,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-09-25 08:57:17,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 08:57:17,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:57:18,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:57:18,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:18,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:18,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:18,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:57:18,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:18,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:57:18,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:18,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:18,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:57:18,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:57:18,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:57:18,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:57:18,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 08:57:18,028 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [127300946] [2020-09-25 08:57:18,029 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:57:18,029 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 08:57:18,029 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181307105] [2020-09-25 08:57:18,029 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 08:57:18,030 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:57:18,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 08:57:18,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 08:57:18,030 INFO L87 Difference]: Start difference. First operand 7023 states and 9134 transitions. Second operand 3 states. [2020-09-25 08:57:18,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:57:18,099 INFO L93 Difference]: Finished difference Result 8371 states and 10864 transitions. [2020-09-25 08:57:18,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 08:57:18,100 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2020-09-25 08:57:18,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:57:18,124 INFO L225 Difference]: With dead ends: 8371 [2020-09-25 08:57:18,124 INFO L226 Difference]: Without dead ends: 8369 [2020-09-25 08:57:18,129 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 08:57:18,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8369 states. [2020-09-25 08:57:18,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8369 to 7023. [2020-09-25 08:57:18,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7023 states. [2020-09-25 08:57:18,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7023 states to 7023 states and 9070 transitions. [2020-09-25 08:57:18,262 INFO L78 Accepts]: Start accepts. Automaton has 7023 states and 9070 transitions. Word has length 80 [2020-09-25 08:57:18,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:57:18,262 INFO L479 AbstractCegarLoop]: Abstraction has 7023 states and 9070 transitions. [2020-09-25 08:57:18,262 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 08:57:18,263 INFO L276 IsEmpty]: Start isEmpty. Operand 7023 states and 9070 transitions. [2020-09-25 08:57:18,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-09-25 08:57:18,268 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:57:18,268 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, 1, 1, 1, 1] [2020-09-25 08:57:18,268 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-25 08:57:18,268 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:57:18,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:57:18,269 INFO L82 PathProgramCache]: Analyzing trace with hash 179548138, now seen corresponding path program 1 times [2020-09-25 08:57:18,269 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:57:18,269 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [452749475] [2020-09-25 08:57:18,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:57:18,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:18,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:18,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:18,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-25 08:57:18,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:18,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-09-25 08:57:18,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:18,334 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:18,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:57:18,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-09-25 08:57:18,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 08:57:18,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:57:18,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:57:18,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:18,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:18,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:18,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:57:18,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:18,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:57:18,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:18,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:18,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:57:18,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:57:18,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:57:18,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:57:18,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 08:57:18,363 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [452749475] [2020-09-25 08:57:18,363 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:57:18,364 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 08:57:18,364 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175943950] [2020-09-25 08:57:18,364 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 08:57:18,364 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:57:18,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 08:57:18,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 08:57:18,365 INFO L87 Difference]: Start difference. First operand 7023 states and 9070 transitions. Second operand 3 states. [2020-09-25 08:57:18,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:57:18,544 INFO L93 Difference]: Finished difference Result 20595 states and 26608 transitions. [2020-09-25 08:57:18,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 08:57:18,545 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2020-09-25 08:57:18,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:57:18,572 INFO L225 Difference]: With dead ends: 20595 [2020-09-25 08:57:18,572 INFO L226 Difference]: Without dead ends: 13617 [2020-09-25 08:57:18,587 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 08:57:18,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13617 states. [2020-09-25 08:57:18,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13617 to 13615. [2020-09-25 08:57:18,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13615 states. [2020-09-25 08:57:18,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13615 states to 13615 states and 17326 transitions. [2020-09-25 08:57:18,827 INFO L78 Accepts]: Start accepts. Automaton has 13615 states and 17326 transitions. Word has length 80 [2020-09-25 08:57:18,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:57:18,827 INFO L479 AbstractCegarLoop]: Abstraction has 13615 states and 17326 transitions. [2020-09-25 08:57:18,828 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 08:57:18,828 INFO L276 IsEmpty]: Start isEmpty. Operand 13615 states and 17326 transitions. [2020-09-25 08:57:18,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-09-25 08:57:18,837 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:57:18,837 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, 1, 1, 1, 1, 1] [2020-09-25 08:57:18,837 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-25 08:57:18,838 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:57:18,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:57:18,838 INFO L82 PathProgramCache]: Analyzing trace with hash 1037388505, now seen corresponding path program 1 times [2020-09-25 08:57:18,838 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:57:18,839 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [238746054] [2020-09-25 08:57:18,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:57:18,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:18,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:18,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:18,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 08:57:18,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:18,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-09-25 08:57:18,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:18,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:18,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:57:18,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-09-25 08:57:18,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 08:57:18,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:18,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:57:18,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:18,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:18,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:18,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:57:18,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:18,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:57:18,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:18,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:18,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:57:18,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:57:18,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:57:18,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:57:18,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 08:57:18,935 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [238746054] [2020-09-25 08:57:18,935 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:57:18,936 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 08:57:18,936 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853984402] [2020-09-25 08:57:18,936 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 08:57:18,936 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:57:18,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 08:57:18,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 08:57:18,937 INFO L87 Difference]: Start difference. First operand 13615 states and 17326 transitions. Second operand 3 states. [2020-09-25 08:57:19,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:57:19,067 INFO L93 Difference]: Finished difference Result 16051 states and 20272 transitions. [2020-09-25 08:57:19,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 08:57:19,068 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 81 [2020-09-25 08:57:19,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:57:19,254 INFO L225 Difference]: With dead ends: 16051 [2020-09-25 08:57:19,254 INFO L226 Difference]: Without dead ends: 16049 [2020-09-25 08:57:19,259 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 08:57:19,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16049 states. [2020-09-25 08:57:19,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16049 to 13615. [2020-09-25 08:57:19,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13615 states. [2020-09-25 08:57:19,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13615 states to 13615 states and 17198 transitions. [2020-09-25 08:57:19,542 INFO L78 Accepts]: Start accepts. Automaton has 13615 states and 17198 transitions. Word has length 81 [2020-09-25 08:57:19,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:57:19,542 INFO L479 AbstractCegarLoop]: Abstraction has 13615 states and 17198 transitions. [2020-09-25 08:57:19,542 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 08:57:19,542 INFO L276 IsEmpty]: Start isEmpty. Operand 13615 states and 17198 transitions. [2020-09-25 08:57:19,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-09-25 08:57:19,551 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:57:19,552 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, 1, 1, 1, 1, 1] [2020-09-25 08:57:19,552 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-25 08:57:19,552 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:57:19,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:57:19,552 INFO L82 PathProgramCache]: Analyzing trace with hash 1271271512, now seen corresponding path program 1 times [2020-09-25 08:57:19,553 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:57:19,553 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [97238825] [2020-09-25 08:57:19,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:57:19,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:19,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:19,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:19,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 08:57:19,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:19,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-09-25 08:57:19,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:19,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:19,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:57:19,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-09-25 08:57:19,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 08:57:19,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:19,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:57:19,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:19,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:19,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:19,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:57:19,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:19,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:57:19,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:19,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:19,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:57:19,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:57:19,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:57:19,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:19,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 08:57:19,650 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [97238825] [2020-09-25 08:57:19,650 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:57:19,651 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 08:57:19,651 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274580086] [2020-09-25 08:57:19,651 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 08:57:19,652 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:57:19,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 08:57:19,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 08:57:19,652 INFO L87 Difference]: Start difference. First operand 13615 states and 17198 transitions. Second operand 3 states. [2020-09-25 08:57:19,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:57:19,854 INFO L93 Difference]: Finished difference Result 39987 states and 50480 transitions. [2020-09-25 08:57:19,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 08:57:19,855 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 81 [2020-09-25 08:57:19,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:57:20,454 INFO L225 Difference]: With dead ends: 39987 [2020-09-25 08:57:20,455 INFO L226 Difference]: Without dead ends: 26417 [2020-09-25 08:57:20,479 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 08:57:20,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26417 states. [2020-09-25 08:57:20,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26417 to 26415. [2020-09-25 08:57:20,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26415 states. [2020-09-25 08:57:20,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26415 states to 26415 states and 32814 transitions. [2020-09-25 08:57:20,936 INFO L78 Accepts]: Start accepts. Automaton has 26415 states and 32814 transitions. Word has length 81 [2020-09-25 08:57:20,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:57:20,936 INFO L479 AbstractCegarLoop]: Abstraction has 26415 states and 32814 transitions. [2020-09-25 08:57:20,936 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 08:57:20,936 INFO L276 IsEmpty]: Start isEmpty. Operand 26415 states and 32814 transitions. [2020-09-25 08:57:20,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-09-25 08:57:20,954 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:57:20,954 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, 1, 1, 1, 1, 1, 1] [2020-09-25 08:57:20,955 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-09-25 08:57:20,955 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:57:20,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:57:20,955 INFO L82 PathProgramCache]: Analyzing trace with hash -124338492, now seen corresponding path program 1 times [2020-09-25 08:57:20,955 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:57:20,956 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1467020094] [2020-09-25 08:57:20,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:57:20,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:20,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:21,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:21,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-25 08:57:21,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:21,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-09-25 08:57:21,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:21,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:21,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:57:21,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 76 [2020-09-25 08:57:21,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 08:57:21,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:21,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:57:21,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:21,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:21,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:21,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:57:21,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:21,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:57:21,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:21,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:21,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:57:21,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:57:21,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:57:21,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:57:21,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 08:57:21,064 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1467020094] [2020-09-25 08:57:21,064 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:57:21,064 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 08:57:21,069 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419835781] [2020-09-25 08:57:21,071 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 08:57:21,071 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:57:21,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 08:57:21,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 08:57:21,072 INFO L87 Difference]: Start difference. First operand 26415 states and 32814 transitions. Second operand 3 states. [2020-09-25 08:57:21,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:57:21,443 INFO L93 Difference]: Finished difference Result 30771 states and 37680 transitions. [2020-09-25 08:57:21,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 08:57:21,444 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 82 [2020-09-25 08:57:21,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:57:21,529 INFO L225 Difference]: With dead ends: 30771 [2020-09-25 08:57:21,530 INFO L226 Difference]: Without dead ends: 30769 [2020-09-25 08:57:21,540 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 08:57:21,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30769 states. [2020-09-25 08:57:22,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30769 to 26415. [2020-09-25 08:57:22,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26415 states. [2020-09-25 08:57:22,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26415 states to 26415 states and 32558 transitions. [2020-09-25 08:57:22,244 INFO L78 Accepts]: Start accepts. Automaton has 26415 states and 32558 transitions. Word has length 82 [2020-09-25 08:57:22,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:57:22,244 INFO L479 AbstractCegarLoop]: Abstraction has 26415 states and 32558 transitions. [2020-09-25 08:57:22,244 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 08:57:22,245 INFO L276 IsEmpty]: Start isEmpty. Operand 26415 states and 32558 transitions. [2020-09-25 08:57:22,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-09-25 08:57:22,269 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:57:22,270 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, 1, 1, 1, 1, 1, 1] [2020-09-25 08:57:22,270 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-09-25 08:57:22,270 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:57:22,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:57:22,271 INFO L82 PathProgramCache]: Analyzing trace with hash 754958110, now seen corresponding path program 1 times [2020-09-25 08:57:22,272 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:57:22,272 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1836836350] [2020-09-25 08:57:22,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:57:22,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:22,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:22,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:22,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-25 08:57:22,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:22,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-09-25 08:57:22,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:22,349 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:22,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:57:22,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 76 [2020-09-25 08:57:22,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 08:57:22,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:22,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:57:22,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:22,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:22,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:22,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:57:22,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:22,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:57:22,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:22,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:22,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:57:22,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:57:22,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:57:22,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:22,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 08:57:22,394 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1836836350] [2020-09-25 08:57:22,394 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:57:22,394 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 08:57:22,395 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084133559] [2020-09-25 08:57:22,396 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 08:57:22,396 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:57:22,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 08:57:22,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 08:57:22,396 INFO L87 Difference]: Start difference. First operand 26415 states and 32558 transitions. Second operand 3 states. [2020-09-25 08:57:23,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:57:23,097 INFO L93 Difference]: Finished difference Result 77617 states and 95535 transitions. [2020-09-25 08:57:23,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 08:57:23,098 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 82 [2020-09-25 08:57:23,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:57:23,175 INFO L225 Difference]: With dead ends: 77617 [2020-09-25 08:57:23,175 INFO L226 Difference]: Without dead ends: 26415 [2020-09-25 08:57:23,296 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 08:57:23,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26415 states. [2020-09-25 08:57:23,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26415 to 26415. [2020-09-25 08:57:23,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26415 states. [2020-09-25 08:57:23,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26415 states to 26415 states and 31534 transitions. [2020-09-25 08:57:23,805 INFO L78 Accepts]: Start accepts. Automaton has 26415 states and 31534 transitions. Word has length 82 [2020-09-25 08:57:23,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:57:23,805 INFO L479 AbstractCegarLoop]: Abstraction has 26415 states and 31534 transitions. [2020-09-25 08:57:23,805 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 08:57:23,805 INFO L276 IsEmpty]: Start isEmpty. Operand 26415 states and 31534 transitions. [2020-09-25 08:57:23,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-09-25 08:57:23,821 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:57:23,821 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, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:57:23,821 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-09-25 08:57:23,822 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:57:23,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:57:23,822 INFO L82 PathProgramCache]: Analyzing trace with hash -1778136659, now seen corresponding path program 1 times [2020-09-25 08:57:23,822 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:57:23,822 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1729015361] [2020-09-25 08:57:23,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:57:23,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:23,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:23,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:23,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 08:57:23,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:23,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-09-25 08:57:23,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:23,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:23,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:57:23,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-09-25 08:57:23,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 08:57:23,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:23,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:57:23,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:57:23,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:57:23,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:57:23,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:57:23,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:57:23,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:57:23,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:57:23,918 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:57:23,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:57:23,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:57:23,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:57:23,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:57:23,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 08:57:23,924 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1729015361] [2020-09-25 08:57:23,924 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:57:23,925 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 08:57:23,925 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153050887] [2020-09-25 08:57:23,925 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 08:57:23,926 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:57:23,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 08:57:23,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 08:57:23,926 INFO L87 Difference]: Start difference. First operand 26415 states and 31534 transitions. Second operand 3 states. [2020-09-25 08:57:24,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:57:24,175 INFO L93 Difference]: Finished difference Result 26415 states and 31534 transitions. [2020-09-25 08:57:24,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 08:57:24,176 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 83 [2020-09-25 08:57:24,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:57:24,177 INFO L225 Difference]: With dead ends: 26415 [2020-09-25 08:57:24,177 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 08:57:24,200 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 08:57:24,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 08:57:24,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 08:57:24,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 08:57:24,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 08:57:24,201 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 83 [2020-09-25 08:57:24,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:57:24,202 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 08:57:24,202 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 08:57:24,202 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 08:57:24,202 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 08:57:24,202 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-09-25 08:57:24,205 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 08:57:24,241 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-25 08:57:24,241 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 08:57:24,241 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 08:57:24,241 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-25 08:57:24,241 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 08:57:24,241 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 08:57:24,242 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 4 163) no Hoare annotation was computed. [2020-09-25 08:57:24,242 INFO L268 CegarLoopResult]: For program point L118-1(lines 39 158) no Hoare annotation was computed. [2020-09-25 08:57:24,242 INFO L268 CegarLoopResult]: For program point L52(line 52) no Hoare annotation was computed. [2020-09-25 08:57:24,242 INFO L268 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-09-25 08:57:24,242 INFO L268 CegarLoopResult]: For program point L135(line 135) no Hoare annotation was computed. [2020-09-25 08:57:24,242 INFO L268 CegarLoopResult]: For program point L102-1(lines 39 158) no Hoare annotation was computed. [2020-09-25 08:57:24,242 INFO L268 CegarLoopResult]: For program point L119(line 119) no Hoare annotation was computed. [2020-09-25 08:57:24,243 INFO L268 CegarLoopResult]: For program point L86-1(lines 39 158) no Hoare annotation was computed. [2020-09-25 08:57:24,243 INFO L268 CegarLoopResult]: For program point L103(line 103) no Hoare annotation was computed. [2020-09-25 08:57:24,243 INFO L268 CegarLoopResult]: For program point L37(line 37) no Hoare annotation was computed. [2020-09-25 08:57:24,243 INFO L268 CegarLoopResult]: For program point L70-1(lines 39 158) no Hoare annotation was computed. [2020-09-25 08:57:24,243 INFO L268 CegarLoopResult]: For program point L120(line 120) no Hoare annotation was computed. [2020-09-25 08:57:24,243 INFO L271 CegarLoopResult]: At program point L153-1(lines 39 158) the Hoare annotation is: true [2020-09-25 08:57:24,243 INFO L268 CegarLoopResult]: For program point L87(line 87) no Hoare annotation was computed. [2020-09-25 08:57:24,244 INFO L268 CegarLoopResult]: For program point L54(line 54) no Hoare annotation was computed. [2020-09-25 08:57:24,244 INFO L268 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed. [2020-09-25 08:57:24,244 INFO L268 CegarLoopResult]: For program point L21-1(line 21) no Hoare annotation was computed. [2020-09-25 08:57:24,244 INFO L268 CegarLoopResult]: For program point L21-2(line 21) no Hoare annotation was computed. [2020-09-25 08:57:24,244 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 4 163) no Hoare annotation was computed. [2020-09-25 08:57:24,244 INFO L268 CegarLoopResult]: For program point L71(line 71) no Hoare annotation was computed. [2020-09-25 08:57:24,244 INFO L268 CegarLoopResult]: For program point L154(line 154) no Hoare annotation was computed. [2020-09-25 08:57:24,245 INFO L264 CegarLoopResult]: At program point L154-1(lines 5 163) the Hoare annotation is: false [2020-09-25 08:57:24,245 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-09-25 08:57:24,245 INFO L268 CegarLoopResult]: For program point L138-1(lines 39 158) no Hoare annotation was computed. [2020-09-25 08:57:24,245 INFO L268 CegarLoopResult]: For program point L6(line 6) no Hoare annotation was computed. [2020-09-25 08:57:24,245 INFO L268 CegarLoopResult]: For program point L6-1(line 6) no Hoare annotation was computed. [2020-09-25 08:57:24,245 INFO L268 CegarLoopResult]: For program point L155(line 155) no Hoare annotation was computed. [2020-09-25 08:57:24,245 INFO L268 CegarLoopResult]: For program point L56(line 56) no Hoare annotation was computed. [2020-09-25 08:57:24,245 INFO L268 CegarLoopResult]: For program point L139(line 139) no Hoare annotation was computed. [2020-09-25 08:57:24,246 INFO L268 CegarLoopResult]: For program point L40(line 40) no Hoare annotation was computed. [2020-09-25 08:57:24,246 INFO L268 CegarLoopResult]: For program point L7(line 7) no Hoare annotation was computed. [2020-09-25 08:57:24,246 INFO L268 CegarLoopResult]: For program point L40-1(line 40) no Hoare annotation was computed. [2020-09-25 08:57:24,246 INFO L268 CegarLoopResult]: For program point L40-2(line 40) no Hoare annotation was computed. [2020-09-25 08:57:24,246 INFO L268 CegarLoopResult]: For program point L123-1(lines 39 158) no Hoare annotation was computed. [2020-09-25 08:57:24,246 INFO L268 CegarLoopResult]: For program point L90-1(lines 39 158) no Hoare annotation was computed. [2020-09-25 08:57:24,246 INFO L268 CegarLoopResult]: For program point L24(line 24) no Hoare annotation was computed. [2020-09-25 08:57:24,247 INFO L268 CegarLoopResult]: For program point L24-1(line 24) no Hoare annotation was computed. [2020-09-25 08:57:24,247 INFO L268 CegarLoopResult]: For program point L24-2(line 24) no Hoare annotation was computed. [2020-09-25 08:57:24,247 INFO L268 CegarLoopResult]: For program point L140(line 140) no Hoare annotation was computed. [2020-09-25 08:57:24,247 INFO L268 CegarLoopResult]: For program point L41(lines 41 43) no Hoare annotation was computed. [2020-09-25 08:57:24,247 INFO L268 CegarLoopResult]: For program point L74-1(lines 39 158) no Hoare annotation was computed. [2020-09-25 08:57:24,247 INFO L268 CegarLoopResult]: For program point L124(line 124) no Hoare annotation was computed. [2020-09-25 08:57:24,247 INFO L268 CegarLoopResult]: For program point L91(line 91) no Hoare annotation was computed. [2020-09-25 08:57:24,247 INFO L268 CegarLoopResult]: For program point L58(line 58) no Hoare annotation was computed. [2020-09-25 08:57:24,248 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-09-25 08:57:24,248 INFO L268 CegarLoopResult]: For program point L75(line 75) no Hoare annotation was computed. [2020-09-25 08:57:24,248 INFO L268 CegarLoopResult]: For program point L108-1(lines 39 158) no Hoare annotation was computed. [2020-09-25 08:57:24,248 INFO L268 CegarLoopResult]: For program point L9(line 9) no Hoare annotation was computed. [2020-09-25 08:57:24,248 INFO L268 CegarLoopResult]: For program point L9-1(line 9) no Hoare annotation was computed. [2020-09-25 08:57:24,248 INFO L268 CegarLoopResult]: For program point L9-2(line 9) no Hoare annotation was computed. [2020-09-25 08:57:24,248 INFO L268 CegarLoopResult]: For program point L125(line 125) no Hoare annotation was computed. [2020-09-25 08:57:24,249 INFO L268 CegarLoopResult]: For program point L109(line 109) no Hoare annotation was computed. [2020-09-25 08:57:24,249 INFO L268 CegarLoopResult]: For program point L10(line 10) no Hoare annotation was computed. [2020-09-25 08:57:24,249 INFO L271 CegarLoopResult]: At program point L159(lines 5 163) the Hoare annotation is: true [2020-09-25 08:57:24,249 INFO L268 CegarLoopResult]: For program point L60(line 60) no Hoare annotation was computed. [2020-09-25 08:57:24,249 INFO L268 CegarLoopResult]: For program point L27(line 27) no Hoare annotation was computed. [2020-09-25 08:57:24,249 INFO L268 CegarLoopResult]: For program point L27-1(line 27) no Hoare annotation was computed. [2020-09-25 08:57:24,249 INFO L268 CegarLoopResult]: For program point L27-2(line 27) no Hoare annotation was computed. [2020-09-25 08:57:24,250 INFO L268 CegarLoopResult]: For program point L110(line 110) no Hoare annotation was computed. [2020-09-25 08:57:24,250 INFO L268 CegarLoopResult]: For program point L143-1(lines 39 158) no Hoare annotation was computed. [2020-09-25 08:57:24,250 INFO L268 CegarLoopResult]: For program point L44(line 44) no Hoare annotation was computed. [2020-09-25 08:57:24,250 INFO L268 CegarLoopResult]: For program point L94-1(lines 39 158) no Hoare annotation was computed. [2020-09-25 08:57:24,250 INFO L268 CegarLoopResult]: For program point L28(line 28) no Hoare annotation was computed. [2020-09-25 08:57:24,250 INFO L268 CegarLoopResult]: For program point L144(line 144) no Hoare annotation was computed. [2020-09-25 08:57:24,251 INFO L268 CegarLoopResult]: For program point L78-1(lines 39 158) no Hoare annotation was computed. [2020-09-25 08:57:24,251 INFO L268 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-09-25 08:57:24,251 INFO L268 CegarLoopResult]: For program point L12-1(line 12) no Hoare annotation was computed. [2020-09-25 08:57:24,251 INFO L268 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-09-25 08:57:24,251 INFO L268 CegarLoopResult]: For program point L95(line 95) no Hoare annotation was computed. [2020-09-25 08:57:24,251 INFO L268 CegarLoopResult]: For program point L128-1(lines 39 158) no Hoare annotation was computed. [2020-09-25 08:57:24,251 INFO L268 CegarLoopResult]: For program point L62(line 62) no Hoare annotation was computed. [2020-09-25 08:57:24,251 INFO L268 CegarLoopResult]: For program point L145(line 145) no Hoare annotation was computed. [2020-09-25 08:57:24,252 INFO L268 CegarLoopResult]: For program point L79(line 79) no Hoare annotation was computed. [2020-09-25 08:57:24,252 INFO L268 CegarLoopResult]: For program point L46(line 46) no Hoare annotation was computed. [2020-09-25 08:57:24,252 INFO L268 CegarLoopResult]: For program point L13(line 13) no Hoare annotation was computed. [2020-09-25 08:57:24,252 INFO L268 CegarLoopResult]: For program point L162(line 162) no Hoare annotation was computed. [2020-09-25 08:57:24,252 INFO L268 CegarLoopResult]: For program point L129(line 129) no Hoare annotation was computed. [2020-09-25 08:57:24,252 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 161) no Hoare annotation was computed. [2020-09-25 08:57:24,253 INFO L268 CegarLoopResult]: For program point L30(line 30) no Hoare annotation was computed. [2020-09-25 08:57:24,253 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 4 163) the Hoare annotation is: true [2020-09-25 08:57:24,253 INFO L268 CegarLoopResult]: For program point L30-1(line 30) no Hoare annotation was computed. [2020-09-25 08:57:24,253 INFO L268 CegarLoopResult]: For program point L30-2(line 30) no Hoare annotation was computed. [2020-09-25 08:57:24,253 INFO L268 CegarLoopResult]: For program point L113-1(lines 39 158) no Hoare annotation was computed. [2020-09-25 08:57:24,253 INFO L268 CegarLoopResult]: For program point L130(line 130) no Hoare annotation was computed. [2020-09-25 08:57:24,253 INFO L268 CegarLoopResult]: For program point L31(line 31) no Hoare annotation was computed. [2020-09-25 08:57:24,253 INFO L268 CegarLoopResult]: For program point L114(line 114) no Hoare annotation was computed. [2020-09-25 08:57:24,254 INFO L268 CegarLoopResult]: For program point L48(line 48) no Hoare annotation was computed. [2020-09-25 08:57:24,254 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-09-25 08:57:24,254 INFO L268 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2020-09-25 08:57:24,254 INFO L268 CegarLoopResult]: For program point L15-2(line 15) no Hoare annotation was computed. [2020-09-25 08:57:24,254 INFO L268 CegarLoopResult]: For program point L98-1(lines 39 158) no Hoare annotation was computed. [2020-09-25 08:57:24,254 INFO L268 CegarLoopResult]: For program point L115(line 115) no Hoare annotation was computed. [2020-09-25 08:57:24,254 INFO L268 CegarLoopResult]: For program point L148-1(lines 39 158) no Hoare annotation was computed. [2020-09-25 08:57:24,255 INFO L268 CegarLoopResult]: For program point L82-1(lines 39 158) no Hoare annotation was computed. [2020-09-25 08:57:24,255 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-25 08:57:24,255 INFO L268 CegarLoopResult]: For program point L99(line 99) no Hoare annotation was computed. [2020-09-25 08:57:24,255 INFO L268 CegarLoopResult]: For program point L66(lines 66 68) no Hoare annotation was computed. [2020-09-25 08:57:24,255 INFO L268 CegarLoopResult]: For program point L33(line 33) no Hoare annotation was computed. [2020-09-25 08:57:24,255 INFO L268 CegarLoopResult]: For program point L33-1(line 33) no Hoare annotation was computed. [2020-09-25 08:57:24,255 INFO L268 CegarLoopResult]: For program point L66-2(lines 39 158) no Hoare annotation was computed. [2020-09-25 08:57:24,255 INFO L268 CegarLoopResult]: For program point L33-2(line 33) no Hoare annotation was computed. [2020-09-25 08:57:24,256 INFO L268 CegarLoopResult]: For program point L149(line 149) no Hoare annotation was computed. [2020-09-25 08:57:24,256 INFO L268 CegarLoopResult]: For program point L83(line 83) no Hoare annotation was computed. [2020-09-25 08:57:24,256 INFO L268 CegarLoopResult]: For program point L50(line 50) no Hoare annotation was computed. [2020-09-25 08:57:24,256 INFO L268 CegarLoopResult]: For program point L133-1(lines 39 158) no Hoare annotation was computed. [2020-09-25 08:57:24,256 INFO L268 CegarLoopResult]: For program point L67(line 67) no Hoare annotation was computed. [2020-09-25 08:57:24,256 INFO L268 CegarLoopResult]: For program point L34(line 34) no Hoare annotation was computed. [2020-09-25 08:57:24,257 INFO L268 CegarLoopResult]: For program point L150(line 150) no Hoare annotation was computed. [2020-09-25 08:57:24,257 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-09-25 08:57:24,257 INFO L268 CegarLoopResult]: For program point L18-1(line 18) no Hoare annotation was computed. [2020-09-25 08:57:24,257 INFO L268 CegarLoopResult]: For program point L18-2(line 18) no Hoare annotation was computed. [2020-09-25 08:57:24,257 INFO L268 CegarLoopResult]: For program point L134(line 134) no Hoare annotation was computed. [2020-09-25 08:57:24,271 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 08:57:24 BoogieIcfgContainer [2020-09-25 08:57:24,271 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 08:57:24,275 INFO L168 Benchmark]: Toolchain (without parser) took 11529.79 ms. Allocated memory was 140.0 MB in the beginning and 677.9 MB in the end (delta: 537.9 MB). Free memory was 103.4 MB in the beginning and 529.6 MB in the end (delta: -426.2 MB). Peak memory consumption was 111.7 MB. Max. memory is 7.1 GB. [2020-09-25 08:57:24,276 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 08:57:24,276 INFO L168 Benchmark]: CACSL2BoogieTranslator took 359.37 ms. Allocated memory is still 140.0 MB. Free memory was 102.8 MB in the beginning and 92.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. [2020-09-25 08:57:24,277 INFO L168 Benchmark]: Boogie Preprocessor took 125.82 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 92.1 MB in the beginning and 179.7 MB in the end (delta: -87.6 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. [2020-09-25 08:57:24,278 INFO L168 Benchmark]: RCFGBuilder took 531.64 ms. Allocated memory is still 202.4 MB. Free memory was 179.7 MB in the beginning and 155.4 MB in the end (delta: 24.3 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. [2020-09-25 08:57:24,278 INFO L168 Benchmark]: TraceAbstraction took 10502.80 ms. Allocated memory was 202.4 MB in the beginning and 677.9 MB in the end (delta: 475.5 MB). Free memory was 155.4 MB in the beginning and 529.6 MB in the end (delta: -374.2 MB). Peak memory consumption was 101.3 MB. Max. memory is 7.1 GB. [2020-09-25 08:57:24,281 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 359.37 ms. Allocated memory is still 140.0 MB. Free memory was 102.8 MB in the beginning and 92.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 125.82 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 92.1 MB in the beginning and 179.7 MB in the end (delta: -87.6 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 531.64 ms. Allocated memory is still 202.4 MB. Free memory was 179.7 MB in the beginning and 155.4 MB in the end (delta: 24.3 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 10502.80 ms. Allocated memory was 202.4 MB in the beginning and 677.9 MB in the end (delta: 475.5 MB). Free memory was 155.4 MB in the beginning and 529.6 MB in the end (delta: -374.2 MB). Peak memory consumption was 101.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 161]: 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: 39]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 118 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 10.3s, OverallIterations: 20, TraceHistogramMax: 1, AutomataDifference: 3.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 3610 SDtfs, 1318 SDslu, 2579 SDs, 0 SdLazy, 99 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 100 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26415occurred in iteration=17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 3.1s AutomataMinimizationTime, 20 MinimizatonAttempts, 10599 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 1033 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, 2.2s InterpolantComputationTime, 1560 NumberOfCodeBlocks, 1560 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 1540 ConstructedInterpolants, 0 QuantifiedInterpolants, 151100 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 20 InterpolantComputations, 20 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...