/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=LOWLEXORDER --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 21:51:49,953 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 21:51:49,957 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 21:51:50,001 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 21:51:50,002 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 21:51:50,012 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 21:51:50,014 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 21:51:50,018 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 21:51:50,021 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 21:51:50,023 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 21:51:50,023 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 21:51:50,025 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 21:51:50,026 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 21:51:50,029 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 21:51:50,032 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 21:51:50,033 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 21:51:50,035 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 21:51:50,036 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 21:51:50,038 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 21:51:50,044 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 21:51:50,047 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 21:51:50,048 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 21:51:50,049 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 21:51:50,050 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 21:51:50,055 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 21:51:50,055 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 21:51:50,055 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 21:51:50,058 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 21:51:50,058 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 21:51:50,060 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 21:51:50,061 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 21:51:50,061 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 21:51:50,062 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 21:51:50,063 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 21:51:50,064 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 21:51:50,064 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 21:51:50,065 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 21:51:50,066 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 21:51:50,066 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 21:51:50,067 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 21:51:50,068 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 21:51:50,069 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 21:51:50,117 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 21:51:50,118 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 21:51:50,120 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 21:51:50,121 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 21:51:50,121 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 21:51:50,121 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 21:51:50,122 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 21:51:50,122 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 21:51:50,122 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 21:51:50,122 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 21:51:50,123 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 21:51:50,124 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 21:51:50,124 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 21:51:50,124 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 21:51:50,124 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 21:51:50,125 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 21:51:50,125 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 21:51:50,125 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 21:51:50,125 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 21:51:50,126 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 21:51:50,126 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 21:51:50,126 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:51:50,126 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 21:51:50,126 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 21:51:50,127 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 21:51:50,127 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 21:51:50,127 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 21:51:50,127 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 21:51:50,128 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 21:51:50,128 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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;log-additional-information=true; [2020-09-24 21:51:50,571 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 21:51:50,588 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 21:51:50,593 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 21:51:50,594 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 21:51:50,595 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 21:51:50,596 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+cfa-reducer.c [2020-09-24 21:51:50,670 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6b9006068/3e9730fbc0c844299cdaf07484910b40/FLAGb11ab9498 [2020-09-24 21:51:51,177 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 21:51:51,178 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+cfa-reducer.c [2020-09-24 21:51:51,187 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6b9006068/3e9730fbc0c844299cdaf07484910b40/FLAGb11ab9498 [2020-09-24 21:51:51,520 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6b9006068/3e9730fbc0c844299cdaf07484910b40 [2020-09-24 21:51:51,532 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 21:51:51,538 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 21:51:51,540 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 21:51:51,540 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 21:51:51,544 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 21:51:51,545 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:51:51" (1/1) ... [2020-09-24 21:51:51,549 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49b8db4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:51:51, skipping insertion in model container [2020-09-24 21:51:51,549 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:51:51" (1/1) ... [2020-09-24 21:51:51,558 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 21:51:51,584 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 21:51:51,789 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:51:51,796 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 21:51:51,816 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:51:51,832 INFO L208 MainTranslator]: Completed translation [2020-09-24 21:51:51,832 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:51:51 WrapperNode [2020-09-24 21:51:51,832 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 21:51:51,833 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 21:51:51,833 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 21:51:51,834 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 21:51:51,846 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:51:51" (1/1) ... [2020-09-24 21:51:51,847 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:51:51" (1/1) ... [2020-09-24 21:51:51,929 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:51:51" (1/1) ... [2020-09-24 21:51:51,930 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:51:51" (1/1) ... [2020-09-24 21:51:51,934 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:51:51" (1/1) ... [2020-09-24 21:51:51,942 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:51:51" (1/1) ... [2020-09-24 21:51:51,943 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:51:51" (1/1) ... [2020-09-24 21:51:51,944 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 21:51:51,945 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 21:51:51,945 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 21:51:51,945 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 21:51:51,946 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:51:51" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:51:52,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 21:51:52,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 21:51:52,017 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-24 21:51:52,017 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 21:51:52,017 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 21:51:52,017 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 21:51:52,018 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-24 21:51:52,018 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 21:51:52,018 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 21:51:52,018 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 21:51:52,018 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 21:51:52,018 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 21:51:52,300 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 21:51:52,301 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 21:51:52,306 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:51:52 BoogieIcfgContainer [2020-09-24 21:51:52,306 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 21:51:52,308 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 21:51:52,308 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 21:51:52,312 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 21:51:52,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:51:51" (1/3) ... [2020-09-24 21:51:52,319 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16ae1f21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:51:52, skipping insertion in model container [2020-09-24 21:51:52,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:51:51" (2/3) ... [2020-09-24 21:51:52,320 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16ae1f21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:51:52, skipping insertion in model container [2020-09-24 21:51:52,322 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:51:52" (3/3) ... [2020-09-24 21:51:52,327 INFO L109 eAbstractionObserver]: Analyzing ICFG gsv2008.c.i.v+cfa-reducer.c [2020-09-24 21:51:52,346 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 21:51:52,355 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 21:51:52,375 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 21:51:52,403 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 21:51:52,403 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 21:51:52,403 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 21:51:52,403 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 21:51:52,404 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 21:51:52,404 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 21:51:52,404 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 21:51:52,404 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 21:51:52,424 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2020-09-24 21:51:52,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-24 21:51:52,431 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:51:52,432 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] [2020-09-24 21:51:52,433 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:51:52,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:51:52,439 INFO L82 PathProgramCache]: Analyzing trace with hash 341466613, now seen corresponding path program 1 times [2020-09-24 21:51:52,448 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:51:52,449 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1638661460] [2020-09-24 21:51:52,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:51:52,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:51:52,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:51:52,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:51:52,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-24 21:51:52,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:51:52,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-09-24 21:51:52,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:51:52,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:51:52,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-24 21:51:52,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:51:52,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 21:51:52,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:51:52,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:51:52,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:51:52,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:51:52,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 21:51:52,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:51:52,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 21:51:52,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:51:52,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:51:52,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:51:52,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:51:52,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:51:52,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:51:52,741 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1638661460] [2020-09-24 21:51:52,745 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:51:52,746 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 21:51:52,746 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451238722] [2020-09-24 21:51:52,751 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 21:51:52,752 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:51:52,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 21:51:52,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 21:51:52,770 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 4 states. [2020-09-24 21:51:52,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:51:52,907 INFO L93 Difference]: Finished difference Result 51 states and 55 transitions. [2020-09-24 21:51:52,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 21:51:52,910 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2020-09-24 21:51:52,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:51:52,922 INFO L225 Difference]: With dead ends: 51 [2020-09-24 21:51:52,923 INFO L226 Difference]: Without dead ends: 27 [2020-09-24 21:51:52,927 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 21:51:52,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-09-24 21:51:52,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2020-09-24 21:51:52,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-09-24 21:51:52,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2020-09-24 21:51:52,970 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 21 [2020-09-24 21:51:52,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:51:52,970 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2020-09-24 21:51:52,970 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 21:51:52,970 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2020-09-24 21:51:52,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-24 21:51:52,971 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:51:52,972 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] [2020-09-24 21:51:52,972 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 21:51:52,972 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:51:52,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:51:52,973 INFO L82 PathProgramCache]: Analyzing trace with hash 178703795, now seen corresponding path program 1 times [2020-09-24 21:51:52,973 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:51:52,973 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1633417832] [2020-09-24 21:51:52,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:51:52,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:51:53,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:51:53,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:51:53,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:51:53,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 21:51:53,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:51:53,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 346 [2020-09-24 21:51:53,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:51:53,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 21:51:53,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-24 21:51:53,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 21:51:53,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 21:51:53,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:51:53,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:51:53,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:51:53,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:51:53,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 21:51:53,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:51:53,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:51:53,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:51:53,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:51:53,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:51:53,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:51:53,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:51:53,456 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:51:53,456 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1633417832] [2020-09-24 21:51:53,457 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:51:53,457 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 21:51:53,457 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318820693] [2020-09-24 21:51:53,459 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 21:51:53,460 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:51:53,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 21:51:53,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-24 21:51:53,461 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand 9 states. [2020-09-24 21:51:53,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:51:53,735 INFO L93 Difference]: Finished difference Result 38 states and 38 transitions. [2020-09-24 21:51:53,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 21:51:53,736 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-24 21:51:53,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:51:53,737 INFO L225 Difference]: With dead ends: 38 [2020-09-24 21:51:53,737 INFO L226 Difference]: Without dead ends: 31 [2020-09-24 21:51:53,739 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-09-24 21:51:53,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-09-24 21:51:53,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2020-09-24 21:51:53,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-09-24 21:51:53,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2020-09-24 21:51:53,751 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 25 [2020-09-24 21:51:53,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:51:53,752 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2020-09-24 21:51:53,753 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 21:51:53,753 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2020-09-24 21:51:53,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-24 21:51:53,755 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:51:53,755 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:51:53,755 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 21:51:53,756 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:51:53,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:51:53,756 INFO L82 PathProgramCache]: Analyzing trace with hash 563687025, now seen corresponding path program 2 times [2020-09-24 21:51:53,756 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:51:53,757 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [357773643] [2020-09-24 21:51:53,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:51:53,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:51:53,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:51:53,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:51:53,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:51:54,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:51:54,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-24 21:51:54,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 21:51:54,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 334 [2020-09-24 21:51:54,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:51:54,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 21:51:54,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-24 21:51:54,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 21:51:54,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:51:54,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:51:54,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:51:54,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:51:54,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:51:54,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 21:51:54,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:51:54,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:51:54,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:51:54,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:51:54,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:51:54,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:51:54,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:51:54,234 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:51:54,235 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [357773643] [2020-09-24 21:51:54,235 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:51:54,235 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-24 21:51:54,235 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369898722] [2020-09-24 21:51:54,236 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 21:51:54,236 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:51:54,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 21:51:54,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-09-24 21:51:54,237 INFO L87 Difference]: Start difference. First operand 30 states and 30 transitions. Second operand 11 states. [2020-09-24 21:51:54,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:51:54,509 INFO L93 Difference]: Finished difference Result 42 states and 42 transitions. [2020-09-24 21:51:54,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 21:51:54,509 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 29 [2020-09-24 21:51:54,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:51:54,511 INFO L225 Difference]: With dead ends: 42 [2020-09-24 21:51:54,511 INFO L226 Difference]: Without dead ends: 35 [2020-09-24 21:51:54,512 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2020-09-24 21:51:54,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-09-24 21:51:54,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2020-09-24 21:51:54,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-09-24 21:51:54,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 34 transitions. [2020-09-24 21:51:54,519 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 34 transitions. Word has length 29 [2020-09-24 21:51:54,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:51:54,520 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 34 transitions. [2020-09-24 21:51:54,520 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 21:51:54,520 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 34 transitions. [2020-09-24 21:51:54,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-24 21:51:54,521 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:51:54,521 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:51:54,522 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 21:51:54,522 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:51:54,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:51:54,523 INFO L82 PathProgramCache]: Analyzing trace with hash -1026490321, now seen corresponding path program 3 times [2020-09-24 21:51:54,523 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:51:54,523 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1831270838] [2020-09-24 21:51:54,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:51:54,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:51:54,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:51:54,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:51:54,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:51:54,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:51:55,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:51:55,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-24 21:51:55,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 21:51:55,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 885 [2020-09-24 21:51:55,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:51:55,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 21:51:55,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-24 21:51:55,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 21:51:55,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:51:55,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:51:55,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:51:55,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:51:55,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:51:55,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 21:51:55,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:51:55,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:51:55,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:51:55,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:51:55,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:51:55,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:51:55,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:51:55,562 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:51:55,566 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1831270838] [2020-09-24 21:51:55,567 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:51:55,568 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-24 21:51:55,568 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726137519] [2020-09-24 21:51:55,569 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-24 21:51:55,570 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:51:55,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-24 21:51:55,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-09-24 21:51:55,571 INFO L87 Difference]: Start difference. First operand 34 states and 34 transitions. Second operand 13 states. [2020-09-24 21:51:55,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:51:55,916 INFO L93 Difference]: Finished difference Result 46 states and 46 transitions. [2020-09-24 21:51:55,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-24 21:51:55,916 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 33 [2020-09-24 21:51:55,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:51:55,917 INFO L225 Difference]: With dead ends: 46 [2020-09-24 21:51:55,918 INFO L226 Difference]: Without dead ends: 39 [2020-09-24 21:51:55,918 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=90, Invalid=416, Unknown=0, NotChecked=0, Total=506 [2020-09-24 21:51:55,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-09-24 21:51:55,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 38. [2020-09-24 21:51:55,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-24 21:51:55,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 38 transitions. [2020-09-24 21:51:55,933 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 38 transitions. Word has length 33 [2020-09-24 21:51:55,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:51:55,935 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 38 transitions. [2020-09-24 21:51:55,935 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-24 21:51:55,935 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 38 transitions. [2020-09-24 21:51:55,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-09-24 21:51:55,936 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:51:55,937 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:51:55,937 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 21:51:55,937 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:51:55,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:51:55,938 INFO L82 PathProgramCache]: Analyzing trace with hash 2083373805, now seen corresponding path program 4 times [2020-09-24 21:51:55,939 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:51:55,939 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [432776071] [2020-09-24 21:51:55,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:51:55,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:51:55,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:51:55,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:51:56,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:51:56,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:51:56,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:51:57,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:51:57,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-24 21:51:57,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 21:51:57,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1432 [2020-09-24 21:51:57,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:51:57,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 21:51:57,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-24 21:51:57,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 21:51:57,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 14 [2020-09-24 21:51:57,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:51:57,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:51:57,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:51:57,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:51:57,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 21:51:57,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:51:57,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:51:57,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:51:57,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:51:57,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:51:57,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:51:57,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:51:57,570 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:51:57,570 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [432776071] [2020-09-24 21:51:57,570 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:51:57,571 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-24 21:51:57,571 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604342789] [2020-09-24 21:51:57,572 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-24 21:51:57,572 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:51:57,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-24 21:51:57,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2020-09-24 21:51:57,573 INFO L87 Difference]: Start difference. First operand 38 states and 38 transitions. Second operand 15 states. [2020-09-24 21:51:57,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:51:57,969 INFO L93 Difference]: Finished difference Result 50 states and 50 transitions. [2020-09-24 21:51:57,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-24 21:51:57,969 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 37 [2020-09-24 21:51:57,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:51:57,970 INFO L225 Difference]: With dead ends: 50 [2020-09-24 21:51:57,970 INFO L226 Difference]: Without dead ends: 43 [2020-09-24 21:51:57,972 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=105, Invalid=597, Unknown=0, NotChecked=0, Total=702 [2020-09-24 21:51:57,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-09-24 21:51:57,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2020-09-24 21:51:57,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-24 21:51:57,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions. [2020-09-24 21:51:57,978 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 37 [2020-09-24 21:51:57,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:51:57,979 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 42 transitions. [2020-09-24 21:51:57,979 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-24 21:51:57,979 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions. [2020-09-24 21:51:57,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-09-24 21:51:57,980 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:51:57,980 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:51:57,981 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 21:51:57,981 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:51:57,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:51:57,981 INFO L82 PathProgramCache]: Analyzing trace with hash -540084565, now seen corresponding path program 5 times [2020-09-24 21:51:57,981 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:51:57,982 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1022106385] [2020-09-24 21:51:57,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:51:57,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:51:58,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:51:58,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:51:58,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:51:58,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:51:58,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:51:58,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:51:59,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:51:59,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-24 21:51:59,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 21:51:59,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1084 [2020-09-24 21:51:59,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:51:59,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 21:51:59,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-24 21:51:59,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-24 21:51:59,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:51:59,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:51:59,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:51:59,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:51:59,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:51:59,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 21:51:59,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:51:59,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 21:51:59,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:51:59,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:51:59,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:51:59,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:51:59,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:51:59,266 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:51:59,266 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1022106385] [2020-09-24 21:51:59,267 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:51:59,267 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-24 21:51:59,268 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728711081] [2020-09-24 21:51:59,268 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-24 21:51:59,268 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:51:59,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-24 21:51:59,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272 [2020-09-24 21:51:59,269 INFO L87 Difference]: Start difference. First operand 42 states and 42 transitions. Second operand 17 states. [2020-09-24 21:51:59,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:51:59,776 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2020-09-24 21:51:59,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-24 21:51:59,779 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 41 [2020-09-24 21:51:59,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:51:59,780 INFO L225 Difference]: With dead ends: 54 [2020-09-24 21:51:59,780 INFO L226 Difference]: Without dead ends: 47 [2020-09-24 21:51:59,782 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=120, Invalid=810, Unknown=0, NotChecked=0, Total=930 [2020-09-24 21:51:59,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-09-24 21:51:59,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2020-09-24 21:51:59,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-09-24 21:51:59,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 46 transitions. [2020-09-24 21:51:59,792 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 46 transitions. Word has length 41 [2020-09-24 21:51:59,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:51:59,793 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 46 transitions. [2020-09-24 21:51:59,793 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-24 21:51:59,793 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 46 transitions. [2020-09-24 21:51:59,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-09-24 21:51:59,794 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:51:59,794 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:51:59,794 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 21:51:59,794 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:51:59,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:51:59,795 INFO L82 PathProgramCache]: Analyzing trace with hash 1679039337, now seen corresponding path program 6 times [2020-09-24 21:51:59,795 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:51:59,795 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1413130771] [2020-09-24 21:51:59,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:51:59,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:51:59,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:51:59,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:51:59,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:00,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:00,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:00,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:00,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:00,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:52:00,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-24 21:52:00,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 21:52:00,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1127 [2020-09-24 21:52:00,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:52:00,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 21:52:00,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-24 21:52:00,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-24 21:52:00,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:52:01,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:52:01,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:52:01,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:01,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:52:01,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 21:52:01,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:52:01,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:52:01,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:52:01,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:52:01,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:52:01,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:52:01,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:52:01,156 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:52:01,157 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1413130771] [2020-09-24 21:52:01,157 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:52:01,157 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-24 21:52:01,157 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778307884] [2020-09-24 21:52:01,158 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-24 21:52:01,158 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:52:01,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-24 21:52:01,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=301, Unknown=0, NotChecked=0, Total=342 [2020-09-24 21:52:01,159 INFO L87 Difference]: Start difference. First operand 46 states and 46 transitions. Second operand 19 states. [2020-09-24 21:52:01,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:52:01,750 INFO L93 Difference]: Finished difference Result 58 states and 58 transitions. [2020-09-24 21:52:01,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-24 21:52:01,750 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 45 [2020-09-24 21:52:01,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:52:01,752 INFO L225 Difference]: With dead ends: 58 [2020-09-24 21:52:01,752 INFO L226 Difference]: Without dead ends: 51 [2020-09-24 21:52:01,754 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=144, Invalid=1116, Unknown=0, NotChecked=0, Total=1260 [2020-09-24 21:52:01,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-09-24 21:52:01,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 50. [2020-09-24 21:52:01,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-24 21:52:01,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2020-09-24 21:52:01,760 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 45 [2020-09-24 21:52:01,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:52:01,760 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2020-09-24 21:52:01,761 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-24 21:52:01,761 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2020-09-24 21:52:01,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-09-24 21:52:01,762 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:52:01,762 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:52:01,762 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 21:52:01,762 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:52:01,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:52:01,763 INFO L82 PathProgramCache]: Analyzing trace with hash 1134342439, now seen corresponding path program 7 times [2020-09-24 21:52:01,763 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:52:01,763 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [45231946] [2020-09-24 21:52:01,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:52:01,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:52:01,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:01,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:01,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:01,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:02,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:02,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:02,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:02,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:03,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:52:03,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 21:52:03,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 21:52:03,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1321 [2020-09-24 21:52:03,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:52:03,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 21:52:03,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-24 21:52:03,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-24 21:52:03,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:52:03,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:52:03,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:52:03,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:03,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:52:03,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 21:52:03,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:52:03,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:52:03,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:52:03,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:52:03,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:52:03,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:52:03,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:52:03,360 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:52:03,360 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [45231946] [2020-09-24 21:52:03,361 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:52:03,361 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-09-24 21:52:03,361 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622487726] [2020-09-24 21:52:03,363 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-09-24 21:52:03,363 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:52:03,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-09-24 21:52:03,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=374, Unknown=0, NotChecked=0, Total=420 [2020-09-24 21:52:03,364 INFO L87 Difference]: Start difference. First operand 50 states and 50 transitions. Second operand 21 states. [2020-09-24 21:52:04,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:52:04,089 INFO L93 Difference]: Finished difference Result 62 states and 62 transitions. [2020-09-24 21:52:04,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-09-24 21:52:04,090 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 49 [2020-09-24 21:52:04,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:52:04,092 INFO L225 Difference]: With dead ends: 62 [2020-09-24 21:52:04,092 INFO L226 Difference]: Without dead ends: 55 [2020-09-24 21:52:04,094 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 357 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=168, Invalid=1472, Unknown=0, NotChecked=0, Total=1640 [2020-09-24 21:52:04,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-09-24 21:52:04,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 54. [2020-09-24 21:52:04,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-24 21:52:04,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 54 transitions. [2020-09-24 21:52:04,100 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 54 transitions. Word has length 49 [2020-09-24 21:52:04,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:52:04,100 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 54 transitions. [2020-09-24 21:52:04,100 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-09-24 21:52:04,100 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 54 transitions. [2020-09-24 21:52:04,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-24 21:52:04,101 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:52:04,101 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:52:04,102 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 21:52:04,102 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:52:04,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:52:04,102 INFO L82 PathProgramCache]: Analyzing trace with hash 1565013989, now seen corresponding path program 8 times [2020-09-24 21:52:04,102 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:52:04,103 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1729771153] [2020-09-24 21:52:04,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:52:04,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:52:04,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:04,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:04,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:04,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:04,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:04,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:05,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:05,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:05,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:06,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:52:06,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-24 21:52:06,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 21:52:06,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2128 [2020-09-24 21:52:06,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:52:06,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-24 21:52:06,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-24 21:52:06,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-24 21:52:06,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:52:06,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:52:06,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:52:06,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:06,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:52:06,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 21:52:06,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:52:06,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 21:52:06,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:52:06,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:52:06,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:52:06,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:52:06,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:52:06,559 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:52:06,563 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1729771153] [2020-09-24 21:52:06,564 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:52:06,564 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-09-24 21:52:06,564 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961838933] [2020-09-24 21:52:06,565 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-09-24 21:52:06,565 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:52:06,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-09-24 21:52:06,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=455, Unknown=0, NotChecked=0, Total=506 [2020-09-24 21:52:06,566 INFO L87 Difference]: Start difference. First operand 54 states and 54 transitions. Second operand 23 states. [2020-09-24 21:52:07,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:52:07,493 INFO L93 Difference]: Finished difference Result 66 states and 66 transitions. [2020-09-24 21:52:07,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-09-24 21:52:07,494 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 53 [2020-09-24 21:52:07,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:52:07,495 INFO L225 Difference]: With dead ends: 66 [2020-09-24 21:52:07,496 INFO L226 Difference]: Without dead ends: 59 [2020-09-24 21:52:07,497 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 472 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=194, Invalid=1876, Unknown=0, NotChecked=0, Total=2070 [2020-09-24 21:52:07,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-09-24 21:52:07,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 58. [2020-09-24 21:52:07,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-09-24 21:52:07,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 58 transitions. [2020-09-24 21:52:07,505 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 58 transitions. Word has length 53 [2020-09-24 21:52:07,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:52:07,505 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 58 transitions. [2020-09-24 21:52:07,505 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-09-24 21:52:07,505 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 58 transitions. [2020-09-24 21:52:07,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-24 21:52:07,506 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:52:07,506 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:52:07,507 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 21:52:07,507 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:52:07,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:52:07,507 INFO L82 PathProgramCache]: Analyzing trace with hash 339095459, now seen corresponding path program 9 times [2020-09-24 21:52:07,508 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:52:07,508 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [78692156] [2020-09-24 21:52:07,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:52:07,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:52:07,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:07,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:07,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:07,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:07,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:08,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:08,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:08,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:08,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:09,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:10,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:52:10,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-24 21:52:10,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-24 21:52:10,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2644 [2020-09-24 21:52:10,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:52:10,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-24 21:52:10,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-24 21:52:10,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-24 21:52:10,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:52:10,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:52:10,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:52:10,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:10,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:52:10,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 21:52:10,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:52:10,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 21:52:10,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:52:10,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:52:10,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:52:10,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:52:10,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:52:10,516 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:52:10,517 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [78692156] [2020-09-24 21:52:10,517 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:52:10,517 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-09-24 21:52:10,518 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535845243] [2020-09-24 21:52:10,519 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-09-24 21:52:10,519 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:52:10,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-09-24 21:52:10,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=544, Unknown=0, NotChecked=0, Total=600 [2020-09-24 21:52:10,520 INFO L87 Difference]: Start difference. First operand 58 states and 58 transitions. Second operand 25 states. [2020-09-24 21:52:11,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:52:11,655 INFO L93 Difference]: Finished difference Result 70 states and 70 transitions. [2020-09-24 21:52:11,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-24 21:52:11,655 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 57 [2020-09-24 21:52:11,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:52:11,656 INFO L225 Difference]: With dead ends: 70 [2020-09-24 21:52:11,657 INFO L226 Difference]: Without dead ends: 63 [2020-09-24 21:52:11,659 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 602 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=222, Invalid=2328, Unknown=0, NotChecked=0, Total=2550 [2020-09-24 21:52:11,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-09-24 21:52:11,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 62. [2020-09-24 21:52:11,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-09-24 21:52:11,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 62 transitions. [2020-09-24 21:52:11,665 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 62 transitions. Word has length 57 [2020-09-24 21:52:11,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:52:11,665 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 62 transitions. [2020-09-24 21:52:11,666 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-09-24 21:52:11,666 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 62 transitions. [2020-09-24 21:52:11,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-09-24 21:52:11,667 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:52:11,667 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:52:11,667 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 21:52:11,667 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:52:11,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:52:11,668 INFO L82 PathProgramCache]: Analyzing trace with hash 801511521, now seen corresponding path program 10 times [2020-09-24 21:52:11,668 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:52:11,668 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1627924550] [2020-09-24 21:52:11,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:52:11,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:52:11,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:11,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:11,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:12,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:12,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:12,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:12,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:12,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:12,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:13,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:13,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:13,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:13,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:13,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:14,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:15,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:52:15,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-24 21:52:15,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-09-24 21:52:15,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3948 [2020-09-24 21:52:15,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:52:15,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-09-24 21:52:15,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-24 21:52:15,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-24 21:52:15,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:52:16,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:52:16,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:52:16,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:16,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:52:16,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 21:52:16,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:52:16,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 21:52:16,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:52:16,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:52:16,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:52:16,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:52:16,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:52:16,102 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:52:16,102 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1627924550] [2020-09-24 21:52:16,103 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:52:16,103 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-09-24 21:52:16,103 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928141760] [2020-09-24 21:52:16,104 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-09-24 21:52:16,104 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:52:16,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-09-24 21:52:16,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=642, Unknown=0, NotChecked=0, Total=702 [2020-09-24 21:52:16,105 INFO L87 Difference]: Start difference. First operand 62 states and 62 transitions. Second operand 27 states. [2020-09-24 21:52:17,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:52:17,439 INFO L93 Difference]: Finished difference Result 62 states and 62 transitions. [2020-09-24 21:52:17,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-09-24 21:52:17,439 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 61 [2020-09-24 21:52:17,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:52:17,440 INFO L225 Difference]: With dead ends: 62 [2020-09-24 21:52:17,440 INFO L226 Difference]: Without dead ends: 0 [2020-09-24 21:52:17,442 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=431, Invalid=2119, Unknown=0, NotChecked=0, Total=2550 [2020-09-24 21:52:17,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-24 21:52:17,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-24 21:52:17,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-24 21:52:17,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-24 21:52:17,443 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 61 [2020-09-24 21:52:17,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:52:17,443 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-24 21:52:17,443 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-09-24 21:52:17,443 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-24 21:52:17,443 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-24 21:52:17,444 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-24 21:52:17,446 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-24 21:52:17,641 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 40 [2020-09-24 21:52:17,645 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-09-24 21:52:17,645 INFO L268 CegarLoopResult]: For program point L10(line 10) no Hoare annotation was computed. [2020-09-24 21:52:17,645 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~__return_main~0 |old(~__return_main~0)|) (= ~__return_65~0 |old(~__return_65~0)|)) [2020-09-24 21:52:17,646 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-24 21:52:17,646 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-24 21:52:17,646 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-24 21:52:17,646 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-24 21:52:17,646 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-24 21:52:17,646 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 4 6) no Hoare annotation was computed. [2020-09-24 21:52:17,646 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-09-24 21:52:17,647 INFO L268 CegarLoopResult]: For program point L5-1(line 5) no Hoare annotation was computed. [2020-09-24 21:52:17,647 INFO L268 CegarLoopResult]: For program point L5-3(lines 4 6) no Hoare annotation was computed. [2020-09-24 21:52:17,647 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 4 6) no Hoare annotation was computed. [2020-09-24 21:52:17,647 INFO L268 CegarLoopResult]: For program point L33(line 33) no Hoare annotation was computed. [2020-09-24 21:52:17,647 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-09-24 21:52:17,647 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 11 58) no Hoare annotation was computed. [2020-09-24 21:52:17,647 INFO L268 CegarLoopResult]: For program point L23(lines 23 56) no Hoare annotation was computed. [2020-09-24 21:52:17,648 INFO L268 CegarLoopResult]: For program point L52(line 52) no Hoare annotation was computed. [2020-09-24 21:52:17,648 INFO L268 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-09-24 21:52:17,648 INFO L268 CegarLoopResult]: For program point L17(lines 17 57) no Hoare annotation was computed. [2020-09-24 21:52:17,648 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-09-24 21:52:17,648 INFO L268 CegarLoopResult]: For program point L46(line 46) no Hoare annotation was computed. [2020-09-24 21:52:17,648 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 11 58) no Hoare annotation was computed. [2020-09-24 21:52:17,648 INFO L268 CegarLoopResult]: For program point L44(lines 44 53) no Hoare annotation was computed. [2020-09-24 21:52:17,649 INFO L268 CegarLoopResult]: For program point L42(line 42) no Hoare annotation was computed. [2020-09-24 21:52:17,649 INFO L268 CegarLoopResult]: For program point L40(line 40) no Hoare annotation was computed. [2020-09-24 21:52:17,649 INFO L268 CegarLoopResult]: For program point L34(line 34) no Hoare annotation was computed. [2020-09-24 21:52:17,649 INFO L268 CegarLoopResult]: For program point L32(line 32) no Hoare annotation was computed. [2020-09-24 21:52:17,649 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 46) no Hoare annotation was computed. [2020-09-24 21:52:17,649 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 11 58) the Hoare annotation is: (= |old(~__return_65~0)| ~__return_65~0) [2020-09-24 21:52:17,649 INFO L268 CegarLoopResult]: For program point L51(line 51) no Hoare annotation was computed. [2020-09-24 21:52:17,650 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-24 21:52:17,650 INFO L268 CegarLoopResult]: For program point L16-1(line 16) no Hoare annotation was computed. [2020-09-24 21:52:17,650 INFO L268 CegarLoopResult]: For program point L47(line 47) no Hoare annotation was computed. [2020-09-24 21:52:17,650 INFO L268 CegarLoopResult]: For program point L14(line 14) no Hoare annotation was computed. [2020-09-24 21:52:17,650 INFO L268 CegarLoopResult]: For program point L16-2(line 16) no Hoare annotation was computed. [2020-09-24 21:52:17,650 INFO L268 CegarLoopResult]: For program point L43(line 43) no Hoare annotation was computed. [2020-09-24 21:52:17,650 INFO L268 CegarLoopResult]: For program point L41(line 41) no Hoare annotation was computed. [2020-09-24 21:52:17,651 INFO L264 CegarLoopResult]: At program point L35(lines 28 56) the Hoare annotation is: (let ((.cse2 (<= main_~main__x~0 (+ main_~main__y~0 24))) (.cse0 (= |old(~__return_65~0)| ~__return_65~0))) (or (and .cse0 (<= main_~main__x~0 25) (<= (+ main_~main__x~0 56) (* 3 main_~main__y~0))) (let ((.cse1 (+ main_~main__x~0 51))) (and (<= main_~main__y~0 .cse1) .cse0 (<= .cse1 main_~main__y~0))) (let ((.cse4 (+ main_~main__x~0 53)) (.cse3 (* 2 main_~main__y~0))) (and .cse2 (<= .cse3 .cse4) (<= .cse4 .cse3) .cse0)) (let ((.cse5 (+ main_~main__x~0 50))) (and .cse0 (<= 0 .cse5) (<= .cse5 0))) (and .cse2 .cse0 (<= (+ main_~main__x~0 3) (* 7 main_~main__y~0))))) [2020-09-24 21:52:17,675 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 09:52:17 BoogieIcfgContainer [2020-09-24 21:52:17,676 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 21:52:17,678 INFO L168 Benchmark]: Toolchain (without parser) took 26143.85 ms. Allocated memory was 141.6 MB in the beginning and 365.4 MB in the end (delta: 223.9 MB). Free memory was 105.1 MB in the beginning and 159.1 MB in the end (delta: -54.0 MB). Peak memory consumption was 169.9 MB. Max. memory is 7.1 GB. [2020-09-24 21:52:17,679 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 141.6 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-24 21:52:17,680 INFO L168 Benchmark]: CACSL2BoogieTranslator took 293.37 ms. Allocated memory is still 141.6 MB. Free memory was 104.5 MB in the beginning and 94.6 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2020-09-24 21:52:17,680 INFO L168 Benchmark]: Boogie Preprocessor took 111.19 ms. Allocated memory was 141.6 MB in the beginning and 204.5 MB in the end (delta: 62.9 MB). Free memory was 94.6 MB in the beginning and 183.7 MB in the end (delta: -89.1 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. [2020-09-24 21:52:17,681 INFO L168 Benchmark]: RCFGBuilder took 361.95 ms. Allocated memory is still 204.5 MB. Free memory was 183.7 MB in the beginning and 169.6 MB in the end (delta: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. [2020-09-24 21:52:17,682 INFO L168 Benchmark]: TraceAbstraction took 25367.70 ms. Allocated memory was 204.5 MB in the beginning and 365.4 MB in the end (delta: 161.0 MB). Free memory was 168.9 MB in the beginning and 159.1 MB in the end (delta: 9.9 MB). Peak memory consumption was 170.8 MB. Max. memory is 7.1 GB. [2020-09-24 21:52:17,686 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 141.6 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 293.37 ms. Allocated memory is still 141.6 MB. Free memory was 104.5 MB in the beginning and 94.6 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 111.19 ms. Allocated memory was 141.6 MB in the beginning and 204.5 MB in the end (delta: 62.9 MB). Free memory was 94.6 MB in the beginning and 183.7 MB in the end (delta: -89.1 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 361.95 ms. Allocated memory is still 204.5 MB. Free memory was 183.7 MB in the beginning and 169.6 MB in the end (delta: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 25367.70 ms. Allocated memory was 204.5 MB in the beginning and 365.4 MB in the end (delta: 161.0 MB). Free memory was 168.9 MB in the beginning and 159.1 MB in the end (delta: 9.9 MB). Peak memory consumption was 170.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 46]: 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: 28]: Loop Invariant Derived loop invariant: (((((\old(__return_65) == __return_65 && main__x <= 25) && main__x + 56 <= 3 * main__y) || ((main__y <= main__x + 51 && \old(__return_65) == __return_65) && main__x + 51 <= main__y)) || (((main__x <= main__y + 24 && 2 * main__y <= main__x + 53) && main__x + 53 <= 2 * main__y) && \old(__return_65) == __return_65)) || ((\old(__return_65) == __return_65 && 0 <= main__x + 50) && main__x + 50 <= 0)) || ((main__x <= main__y + 24 && \old(__return_65) == __return_65) && main__x + 3 <= 7 * main__y) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 39 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 25.0s, OverallIterations: 11, TraceHistogramMax: 10, AutomataDifference: 6.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 209 SDtfs, 648 SDslu, 639 SDs, 0 SdLazy, 4054 SolverSat, 203 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 356 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 323 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2466 ImplicationChecksByTransitivity, 5.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=62occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 11 MinimizatonAttempts, 10 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 15 NumberOfFragments, 94 HoareAnnotationTreeSize, 5 FomulaSimplifications, 102 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 119 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 17.7s InterpolantComputationTime, 451 NumberOfCodeBlocks, 451 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 440 ConstructedInterpolants, 0 QuantifiedInterpolants, 95164 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 1 PerfectInterpolantSequences, 0/715 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...