/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 00:05:52,866 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 00:05:52,870 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 00:05:52,905 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 00:05:52,906 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 00:05:52,917 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 00:05:52,919 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 00:05:52,923 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 00:05:52,926 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 00:05:52,930 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 00:05:52,931 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 00:05:52,934 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 00:05:52,934 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 00:05:52,937 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 00:05:52,941 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 00:05:52,943 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 00:05:52,945 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 00:05:52,946 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 00:05:52,948 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 00:05:52,958 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 00:05:52,961 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 00:05:52,962 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 00:05:52,963 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 00:05:52,964 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 00:05:52,968 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 00:05:52,968 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 00:05:52,968 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 00:05:52,971 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 00:05:52,972 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 00:05:52,974 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 00:05:52,974 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 00:05:52,975 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 00:05:52,976 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 00:05:52,977 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 00:05:52,979 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 00:05:52,979 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 00:05:52,980 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 00:05:52,980 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 00:05:52,980 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 00:05:52,982 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 00:05:52,984 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 00:05:52,985 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 00:05:53,040 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 00:05:53,041 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 00:05:53,043 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 00:05:53,044 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 00:05:53,044 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 00:05:53,044 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 00:05:53,044 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 00:05:53,045 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 00:05:53,045 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 00:05:53,045 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 00:05:53,046 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 00:05:53,047 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 00:05:53,047 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 00:05:53,047 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 00:05:53,047 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 00:05:53,048 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 00:05:53,048 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 00:05:53,048 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 00:05:53,048 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 00:05:53,048 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 00:05:53,049 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 00:05:53,049 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 00:05:53,049 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 00:05:53,049 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 00:05:53,050 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 00:05:53,050 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 00:05:53,050 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 00:05:53,050 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 00:05:53,050 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 00:05:53,051 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; [2020-09-25 00:05:53,480 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 00:05:53,506 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 00:05:53,510 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 00:05:53,513 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 00:05:53,513 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 00:05:53,514 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+cfa-reducer.c [2020-09-25 00:05:53,608 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fe8fd2d1c/8f72d7fbe40f43b59f99c2ef306cb392/FLAG1deba9eba [2020-09-25 00:05:54,145 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 00:05:54,146 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+cfa-reducer.c [2020-09-25 00:05:54,154 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fe8fd2d1c/8f72d7fbe40f43b59f99c2ef306cb392/FLAG1deba9eba [2020-09-25 00:05:54,480 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fe8fd2d1c/8f72d7fbe40f43b59f99c2ef306cb392 [2020-09-25 00:05:54,494 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 00:05:54,500 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 00:05:54,501 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 00:05:54,502 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 00:05:54,506 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 00:05:54,507 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:05:54" (1/1) ... [2020-09-25 00:05:54,511 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@180772d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:05:54, skipping insertion in model container [2020-09-25 00:05:54,512 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:05:54" (1/1) ... [2020-09-25 00:05:54,521 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 00:05:54,548 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 00:05:54,770 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 00:05:54,776 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 00:05:54,795 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 00:05:54,810 INFO L208 MainTranslator]: Completed translation [2020-09-25 00:05:54,811 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:05:54 WrapperNode [2020-09-25 00:05:54,811 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 00:05:54,812 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 00:05:54,812 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 00:05:54,813 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 00:05:54,829 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:05:54" (1/1) ... [2020-09-25 00:05:54,830 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:05:54" (1/1) ... [2020-09-25 00:05:54,916 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:05:54" (1/1) ... [2020-09-25 00:05:54,917 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:05:54" (1/1) ... [2020-09-25 00:05:54,922 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:05:54" (1/1) ... [2020-09-25 00:05:54,925 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:05:54" (1/1) ... [2020-09-25 00:05:54,926 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:05:54" (1/1) ... [2020-09-25 00:05:54,928 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 00:05:54,929 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 00:05:54,929 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 00:05:54,929 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 00:05:54,930 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:05:54" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 00:05:55,010 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 00:05:55,010 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 00:05:55,011 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 00:05:55,011 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 00:05:55,011 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 00:05:55,011 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 00:05:55,011 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 00:05:55,012 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 00:05:55,012 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 00:05:55,012 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 00:05:55,012 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 00:05:55,013 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 00:05:55,280 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 00:05:55,281 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 00:05:55,288 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:05:55 BoogieIcfgContainer [2020-09-25 00:05:55,288 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 00:05:55,300 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 00:05:55,301 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 00:05:55,305 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 00:05:55,306 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:05:54" (1/3) ... [2020-09-25 00:05:55,307 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f7bad61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:05:55, skipping insertion in model container [2020-09-25 00:05:55,307 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:05:54" (2/3) ... [2020-09-25 00:05:55,307 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f7bad61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:05:55, skipping insertion in model container [2020-09-25 00:05:55,308 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:05:55" (3/3) ... [2020-09-25 00:05:55,310 INFO L109 eAbstractionObserver]: Analyzing ICFG gsv2008.c.i.v+cfa-reducer.c [2020-09-25 00:05:55,323 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 00:05:55,333 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 00:05:55,371 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 00:05:55,402 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 00:05:55,402 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 00:05:55,402 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 00:05:55,402 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 00:05:55,402 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 00:05:55,403 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 00:05:55,403 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 00:05:55,403 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 00:05:55,423 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2020-09-25 00:05:55,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-25 00:05:55,430 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:05:55,431 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] [2020-09-25 00:05:55,431 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:05:55,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:05:55,438 INFO L82 PathProgramCache]: Analyzing trace with hash 341466613, now seen corresponding path program 1 times [2020-09-25 00:05:55,446 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:05:55,447 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [903710101] [2020-09-25 00:05:55,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:05:55,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:05:55,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:05:55,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:05:55,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-25 00:05:55,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:05:55,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-09-25 00:05:55,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:05:55,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:05:55,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 00:05:55,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 00:05:55,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 00:05:55,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:05:55,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:05:55,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:05:55,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:05:55,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 00:05:55,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:05:55,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 00:05:55,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:05:55,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:05:55,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:05:55,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:05:55,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:05:55,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:05:55,733 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [903710101] [2020-09-25 00:05:55,735 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:05:55,735 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 00:05:55,736 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319658522] [2020-09-25 00:05:55,742 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 00:05:55,742 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:05:55,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 00:05:55,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 00:05:55,759 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 4 states. [2020-09-25 00:05:55,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:05:55,900 INFO L93 Difference]: Finished difference Result 51 states and 55 transitions. [2020-09-25 00:05:55,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 00:05:55,902 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2020-09-25 00:05:55,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:05:55,915 INFO L225 Difference]: With dead ends: 51 [2020-09-25 00:05:55,915 INFO L226 Difference]: Without dead ends: 27 [2020-09-25 00:05:55,919 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 [2020-09-25 00:05:55,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-09-25 00:05:55,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2020-09-25 00:05:55,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-09-25 00:05:55,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2020-09-25 00:05:55,960 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 21 [2020-09-25 00:05:55,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:05:55,961 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2020-09-25 00:05:55,961 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 00:05:55,961 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2020-09-25 00:05:55,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-25 00:05:55,962 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:05:55,963 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] [2020-09-25 00:05:55,963 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 00:05:55,963 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:05:55,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:05:55,964 INFO L82 PathProgramCache]: Analyzing trace with hash 178703795, now seen corresponding path program 1 times [2020-09-25 00:05:55,964 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:05:55,965 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1385020411] [2020-09-25 00:05:55,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:05:55,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:05:56,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:05:56,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:05:56,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:05:56,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 00:05:56,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:05:56,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 404 [2020-09-25 00:05:56,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:05:56,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 00:05:56,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 00:05:56,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 00:05:56,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 00:05:56,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:05:56,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:05:56,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:05:56,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:05:56,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 00:05:56,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:05:56,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 00:05:56,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:05:56,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:05:56,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:05:56,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:05:56,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:05:56,512 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:05:56,513 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1385020411] [2020-09-25 00:05:56,513 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:05:56,513 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 00:05:56,514 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961683299] [2020-09-25 00:05:56,516 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 00:05:56,516 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:05:56,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 00:05:56,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-25 00:05:56,517 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand 9 states. [2020-09-25 00:05:56,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:05:56,804 INFO L93 Difference]: Finished difference Result 38 states and 38 transitions. [2020-09-25 00:05:56,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 00:05:56,805 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-25 00:05:56,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:05:56,806 INFO L225 Difference]: With dead ends: 38 [2020-09-25 00:05:56,807 INFO L226 Difference]: Without dead ends: 31 [2020-09-25 00:05:56,808 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 [2020-09-25 00:05:56,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-09-25 00:05:56,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2020-09-25 00:05:56,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-09-25 00:05:56,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2020-09-25 00:05:56,819 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 25 [2020-09-25 00:05:56,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:05:56,820 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2020-09-25 00:05:56,820 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 00:05:56,820 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2020-09-25 00:05:56,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-25 00:05:56,821 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:05:56,822 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] [2020-09-25 00:05:56,822 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 00:05:56,822 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:05:56,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:05:56,823 INFO L82 PathProgramCache]: Analyzing trace with hash 563687025, now seen corresponding path program 2 times [2020-09-25 00:05:56,823 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:05:56,823 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1052905533] [2020-09-25 00:05:56,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:05:56,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:05:56,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:05:57,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:05:57,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:05:57,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:05:57,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 00:05:57,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 00:05:57,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 384 [2020-09-25 00:05:57,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:05:57,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 00:05:57,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 00:05:57,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 00:05:57,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:05:57,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:05:57,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:05:57,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:05:57,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:05:57,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 00:05:57,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:05:57,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 00:05:57,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:05:57,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:05:57,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:05:57,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:05:57,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:05:57,386 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:05:57,386 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1052905533] [2020-09-25 00:05:57,387 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:05:57,387 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 00:05:57,387 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459939612] [2020-09-25 00:05:57,389 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 00:05:57,389 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:05:57,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 00:05:57,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-09-25 00:05:57,392 INFO L87 Difference]: Start difference. First operand 30 states and 30 transitions. Second operand 11 states. [2020-09-25 00:05:57,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:05:57,714 INFO L93 Difference]: Finished difference Result 42 states and 42 transitions. [2020-09-25 00:05:57,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 00:05:57,715 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 29 [2020-09-25 00:05:57,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:05:57,716 INFO L225 Difference]: With dead ends: 42 [2020-09-25 00:05:57,716 INFO L226 Difference]: Without dead ends: 35 [2020-09-25 00:05:57,720 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2020-09-25 00:05:57,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-09-25 00:05:57,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2020-09-25 00:05:57,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-09-25 00:05:57,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 34 transitions. [2020-09-25 00:05:57,730 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 34 transitions. Word has length 29 [2020-09-25 00:05:57,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:05:57,731 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 34 transitions. [2020-09-25 00:05:57,731 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 00:05:57,731 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 34 transitions. [2020-09-25 00:05:57,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 00:05:57,734 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:05:57,735 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] [2020-09-25 00:05:57,735 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 00:05:57,735 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:05:57,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:05:57,736 INFO L82 PathProgramCache]: Analyzing trace with hash -1026490321, now seen corresponding path program 3 times [2020-09-25 00:05:57,736 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:05:57,737 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2058524351] [2020-09-25 00:05:57,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:05:57,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:05:57,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:05:57,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:05:57,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:05:57,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:05:58,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:05:58,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-25 00:05:58,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 00:05:58,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 886 [2020-09-25 00:05:58,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:05:58,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 00:05:58,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 00:05:58,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 00:05:58,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:05:58,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:05:58,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:05:58,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:05:58,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:05:58,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 00:05:58,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:05:58,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 00:05:58,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:05:58,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:05:58,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:05:58,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:05:58,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:05:58,799 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:05:58,800 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2058524351] [2020-09-25 00:05:58,800 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:05:58,800 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 00:05:58,801 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112186875] [2020-09-25 00:05:58,801 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 00:05:58,801 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:05:58,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 00:05:58,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-09-25 00:05:58,802 INFO L87 Difference]: Start difference. First operand 34 states and 34 transitions. Second operand 13 states. [2020-09-25 00:05:59,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:05:59,160 INFO L93 Difference]: Finished difference Result 46 states and 46 transitions. [2020-09-25 00:05:59,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 00:05:59,162 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 33 [2020-09-25 00:05:59,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:05:59,163 INFO L225 Difference]: With dead ends: 46 [2020-09-25 00:05:59,163 INFO L226 Difference]: Without dead ends: 39 [2020-09-25 00:05:59,169 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 [2020-09-25 00:05:59,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-09-25 00:05:59,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 38. [2020-09-25 00:05:59,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-25 00:05:59,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 38 transitions. [2020-09-25 00:05:59,182 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 38 transitions. Word has length 33 [2020-09-25 00:05:59,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:05:59,182 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 38 transitions. [2020-09-25 00:05:59,183 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 00:05:59,183 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 38 transitions. [2020-09-25 00:05:59,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-09-25 00:05:59,184 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:05:59,185 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] [2020-09-25 00:05:59,186 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 00:05:59,186 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:05:59,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:05:59,187 INFO L82 PathProgramCache]: Analyzing trace with hash 2083373805, now seen corresponding path program 4 times [2020-09-25 00:05:59,187 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:05:59,187 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [485808519] [2020-09-25 00:05:59,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:05:59,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:05:59,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:05:59,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:05:59,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:05:59,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:05:59,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:00,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:06:00,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-25 00:06:00,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 00:06:00,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1470 [2020-09-25 00:06:00,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:06:00,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 00:06:00,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 00:06:00,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 00:06:00,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:06:00,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:06:00,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:06:00,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:00,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:06:00,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 00:06:00,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:06:00,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 00:06:00,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:06:00,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:06:00,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:06:00,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:06:00,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:06:00,832 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:06:00,833 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [485808519] [2020-09-25 00:06:00,833 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:06:00,833 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 00:06:00,834 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593199498] [2020-09-25 00:06:00,834 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 00:06:00,834 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:06:00,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 00:06:00,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2020-09-25 00:06:00,835 INFO L87 Difference]: Start difference. First operand 38 states and 38 transitions. Second operand 15 states. [2020-09-25 00:06:01,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:06:01,226 INFO L93 Difference]: Finished difference Result 50 states and 50 transitions. [2020-09-25 00:06:01,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 00:06:01,227 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 37 [2020-09-25 00:06:01,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:06:01,228 INFO L225 Difference]: With dead ends: 50 [2020-09-25 00:06:01,228 INFO L226 Difference]: Without dead ends: 43 [2020-09-25 00:06:01,229 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 [2020-09-25 00:06:01,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-09-25 00:06:01,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2020-09-25 00:06:01,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 00:06:01,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions. [2020-09-25 00:06:01,243 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 37 [2020-09-25 00:06:01,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:06:01,245 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 42 transitions. [2020-09-25 00:06:01,245 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 00:06:01,245 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions. [2020-09-25 00:06:01,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-09-25 00:06:01,247 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:06:01,248 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] [2020-09-25 00:06:01,248 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 00:06:01,248 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:06:01,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:06:01,249 INFO L82 PathProgramCache]: Analyzing trace with hash -540084565, now seen corresponding path program 5 times [2020-09-25 00:06:01,249 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:06:01,250 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [744222145] [2020-09-25 00:06:01,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:06:01,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:06:01,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:01,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:01,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:01,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:01,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:01,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:02,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:06:02,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 00:06:02,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 00:06:02,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1265 [2020-09-25 00:06:02,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:06:02,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 00:06:02,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 00:06:02,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 00:06:02,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:06:02,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:06:02,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:06:02,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:02,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:06:02,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 00:06:02,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:06:02,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 00:06:02,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:06:02,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:06:02,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:06:02,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:06:02,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:06:02,728 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:06:02,729 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [744222145] [2020-09-25 00:06:02,729 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:06:02,729 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-25 00:06:02,730 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101903860] [2020-09-25 00:06:02,730 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-25 00:06:02,730 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:06:02,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-25 00:06:02,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272 [2020-09-25 00:06:02,731 INFO L87 Difference]: Start difference. First operand 42 states and 42 transitions. Second operand 17 states. [2020-09-25 00:06:03,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:06:03,225 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2020-09-25 00:06:03,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 00:06:03,227 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 41 [2020-09-25 00:06:03,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:06:03,228 INFO L225 Difference]: With dead ends: 54 [2020-09-25 00:06:03,228 INFO L226 Difference]: Without dead ends: 47 [2020-09-25 00:06:03,229 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 [2020-09-25 00:06:03,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-09-25 00:06:03,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2020-09-25 00:06:03,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-09-25 00:06:03,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 46 transitions. [2020-09-25 00:06:03,241 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 46 transitions. Word has length 41 [2020-09-25 00:06:03,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:06:03,241 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 46 transitions. [2020-09-25 00:06:03,242 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-25 00:06:03,242 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 46 transitions. [2020-09-25 00:06:03,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-09-25 00:06:03,245 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:06:03,246 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] [2020-09-25 00:06:03,246 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 00:06:03,246 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:06:03,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:06:03,247 INFO L82 PathProgramCache]: Analyzing trace with hash 1679039337, now seen corresponding path program 6 times [2020-09-25 00:06:03,247 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:06:03,247 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [632776922] [2020-09-25 00:06:03,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:06:03,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:06:03,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:03,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:03,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:03,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:03,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:03,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:03,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:04,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:06:04,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-25 00:06:04,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 00:06:04,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1221 [2020-09-25 00:06:04,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:06:04,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 00:06:04,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 00:06:04,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 00:06:04,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:06:04,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:06:04,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:06:04,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:04,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:06:04,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 00:06:04,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:06:04,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 00:06:04,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:06:04,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:06:04,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:06:04,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:06:04,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:06:04,729 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:06:04,729 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [632776922] [2020-09-25 00:06:04,729 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:06:04,730 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-25 00:06:04,730 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462959522] [2020-09-25 00:06:04,730 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-25 00:06:04,731 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:06:04,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-25 00:06:04,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=301, Unknown=0, NotChecked=0, Total=342 [2020-09-25 00:06:04,731 INFO L87 Difference]: Start difference. First operand 46 states and 46 transitions. Second operand 19 states. [2020-09-25 00:06:05,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:06:05,376 INFO L93 Difference]: Finished difference Result 58 states and 58 transitions. [2020-09-25 00:06:05,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-25 00:06:05,377 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 45 [2020-09-25 00:06:05,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:06:05,378 INFO L225 Difference]: With dead ends: 58 [2020-09-25 00:06:05,378 INFO L226 Difference]: Without dead ends: 51 [2020-09-25 00:06:05,380 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 [2020-09-25 00:06:05,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-09-25 00:06:05,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 50. [2020-09-25 00:06:05,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 00:06:05,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2020-09-25 00:06:05,386 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 45 [2020-09-25 00:06:05,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:06:05,386 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2020-09-25 00:06:05,386 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-25 00:06:05,387 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2020-09-25 00:06:05,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-09-25 00:06:05,388 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:06:05,388 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] [2020-09-25 00:06:05,388 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 00:06:05,388 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:06:05,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:06:05,389 INFO L82 PathProgramCache]: Analyzing trace with hash 1134342439, now seen corresponding path program 7 times [2020-09-25 00:06:05,389 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:06:05,389 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1757655557] [2020-09-25 00:06:05,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:06:05,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:06:05,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:05,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:05,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:05,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:05,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:06,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:06,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:06,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:06,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:06:06,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 00:06:06,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 00:06:06,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1441 [2020-09-25 00:06:06,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:06:06,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 00:06:06,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 00:06:06,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 00:06:06,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:06:07,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:06:07,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:06:07,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:07,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:06:07,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 00:06:07,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:06:07,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 00:06:07,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:06:07,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:06:07,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:06:07,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:06:07,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:06:07,139 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:06:07,139 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1757655557] [2020-09-25 00:06:07,140 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:06:07,140 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-09-25 00:06:07,140 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717699941] [2020-09-25 00:06:07,140 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-09-25 00:06:07,141 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:06:07,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-09-25 00:06:07,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=374, Unknown=0, NotChecked=0, Total=420 [2020-09-25 00:06:07,142 INFO L87 Difference]: Start difference. First operand 50 states and 50 transitions. Second operand 21 states. [2020-09-25 00:06:07,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:06:07,800 INFO L93 Difference]: Finished difference Result 62 states and 62 transitions. [2020-09-25 00:06:07,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-09-25 00:06:07,801 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 49 [2020-09-25 00:06:07,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:06:07,803 INFO L225 Difference]: With dead ends: 62 [2020-09-25 00:06:07,803 INFO L226 Difference]: Without dead ends: 55 [2020-09-25 00:06:07,804 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 [2020-09-25 00:06:07,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-09-25 00:06:07,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 54. [2020-09-25 00:06:07,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 00:06:07,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 54 transitions. [2020-09-25 00:06:07,810 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 54 transitions. Word has length 49 [2020-09-25 00:06:07,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:06:07,810 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 54 transitions. [2020-09-25 00:06:07,810 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-09-25 00:06:07,811 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 54 transitions. [2020-09-25 00:06:07,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-25 00:06:07,812 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:06:07,812 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] [2020-09-25 00:06:07,812 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 00:06:07,812 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:06:07,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:06:07,813 INFO L82 PathProgramCache]: Analyzing trace with hash 1565013989, now seen corresponding path program 8 times [2020-09-25 00:06:07,813 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:06:07,813 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [63809590] [2020-09-25 00:06:07,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:06:07,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:06:07,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:07,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:08,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:08,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:08,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:08,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:08,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:08,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:09,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:10,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:06:10,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-25 00:06:10,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 00:06:10,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2365 [2020-09-25 00:06:10,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:06:10,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-25 00:06:10,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 00:06:10,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-25 00:06:10,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:06:10,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:06:10,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:06:10,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:10,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:06:10,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 00:06:10,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:06:10,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 00:06:10,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:06:10,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:06:10,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:06:10,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:06:10,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:06:10,510 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:06:10,514 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [63809590] [2020-09-25 00:06:10,516 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:06:10,517 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-09-25 00:06:10,517 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529844122] [2020-09-25 00:06:10,517 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-09-25 00:06:10,518 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:06:10,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-09-25 00:06:10,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=455, Unknown=0, NotChecked=0, Total=506 [2020-09-25 00:06:10,519 INFO L87 Difference]: Start difference. First operand 54 states and 54 transitions. Second operand 23 states. [2020-09-25 00:06:11,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:06:11,356 INFO L93 Difference]: Finished difference Result 66 states and 66 transitions. [2020-09-25 00:06:11,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-09-25 00:06:11,357 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 53 [2020-09-25 00:06:11,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:06:11,358 INFO L225 Difference]: With dead ends: 66 [2020-09-25 00:06:11,358 INFO L226 Difference]: Without dead ends: 59 [2020-09-25 00:06:11,360 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 [2020-09-25 00:06:11,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-09-25 00:06:11,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 58. [2020-09-25 00:06:11,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-09-25 00:06:11,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 58 transitions. [2020-09-25 00:06:11,374 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 58 transitions. Word has length 53 [2020-09-25 00:06:11,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:06:11,375 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 58 transitions. [2020-09-25 00:06:11,375 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-09-25 00:06:11,375 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 58 transitions. [2020-09-25 00:06:11,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-25 00:06:11,376 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:06:11,376 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] [2020-09-25 00:06:11,376 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 00:06:11,377 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:06:11,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:06:11,377 INFO L82 PathProgramCache]: Analyzing trace with hash 339095459, now seen corresponding path program 9 times [2020-09-25 00:06:11,377 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:06:11,378 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [720004915] [2020-09-25 00:06:11,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:06:11,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:06:11,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:11,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:11,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:11,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:11,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:11,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:12,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:12,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:12,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:13,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:14,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:06:14,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-25 00:06:14,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 00:06:14,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2837 [2020-09-25 00:06:14,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:06:14,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-25 00:06:14,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 00:06:14,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 00:06:14,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:06:14,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:06:14,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:06:14,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:14,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:06:14,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 00:06:14,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:06:14,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 00:06:14,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:06:14,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:06:14,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:06:14,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:06:14,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:06:14,630 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:06:14,631 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [720004915] [2020-09-25 00:06:14,632 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:06:14,632 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-09-25 00:06:14,632 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189523997] [2020-09-25 00:06:14,633 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-09-25 00:06:14,633 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:06:14,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-09-25 00:06:14,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=544, Unknown=0, NotChecked=0, Total=600 [2020-09-25 00:06:14,636 INFO L87 Difference]: Start difference. First operand 58 states and 58 transitions. Second operand 25 states. [2020-09-25 00:06:15,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:06:15,848 INFO L93 Difference]: Finished difference Result 70 states and 70 transitions. [2020-09-25 00:06:15,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-25 00:06:15,849 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 57 [2020-09-25 00:06:15,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:06:15,850 INFO L225 Difference]: With dead ends: 70 [2020-09-25 00:06:15,851 INFO L226 Difference]: Without dead ends: 63 [2020-09-25 00:06:15,852 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 602 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=222, Invalid=2328, Unknown=0, NotChecked=0, Total=2550 [2020-09-25 00:06:15,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-09-25 00:06:15,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 62. [2020-09-25 00:06:15,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-09-25 00:06:15,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 62 transitions. [2020-09-25 00:06:15,859 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 62 transitions. Word has length 57 [2020-09-25 00:06:15,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:06:15,859 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 62 transitions. [2020-09-25 00:06:15,859 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-09-25 00:06:15,859 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 62 transitions. [2020-09-25 00:06:15,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-09-25 00:06:15,860 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:06:15,860 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] [2020-09-25 00:06:15,861 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 00:06:15,861 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:06:15,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:06:15,861 INFO L82 PathProgramCache]: Analyzing trace with hash 801511521, now seen corresponding path program 10 times [2020-09-25 00:06:15,861 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:06:15,862 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [353442884] [2020-09-25 00:06:15,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:06:15,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:06:15,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:15,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:16,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:16,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:16,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:16,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:16,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:17,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:17,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:17,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:17,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:17,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:18,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:18,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:18,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:20,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:06:20,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 00:06:20,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-09-25 00:06:20,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4457 [2020-09-25 00:06:20,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:06:20,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-09-25 00:06:20,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 00:06:20,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 00:06:20,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:06:20,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:06:20,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:06:20,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:20,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:06:20,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 00:06:20,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:06:20,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 00:06:20,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:06:20,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:06:20,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:06:20,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:06:20,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:06:20,863 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:06:20,863 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [353442884] [2020-09-25 00:06:20,864 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:06:20,864 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-09-25 00:06:20,864 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888251805] [2020-09-25 00:06:20,865 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-09-25 00:06:20,865 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:06:20,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-09-25 00:06:20,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=639, Unknown=0, NotChecked=0, Total=702 [2020-09-25 00:06:20,866 INFO L87 Difference]: Start difference. First operand 62 states and 62 transitions. Second operand 27 states. [2020-09-25 00:06:22,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:06:22,355 INFO L93 Difference]: Finished difference Result 62 states and 62 transitions. [2020-09-25 00:06:22,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-09-25 00:06:22,355 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 61 [2020-09-25 00:06:22,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:06:22,356 INFO L225 Difference]: With dead ends: 62 [2020-09-25 00:06:22,356 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 00:06:22,358 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 407 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=360, Invalid=1992, Unknown=0, NotChecked=0, Total=2352 [2020-09-25 00:06:22,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 00:06:22,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 00:06:22,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 00:06:22,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 00:06:22,359 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 61 [2020-09-25 00:06:22,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:06:22,360 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 00:06:22,360 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-09-25 00:06:22,360 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 00:06:22,360 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 00:06:22,361 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 00:06:22,363 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 00:06:22,580 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 55 [2020-09-25 00:06:22,586 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-09-25 00:06:22,586 INFO L268 CegarLoopResult]: For program point L10(line 10) no Hoare annotation was computed. [2020-09-25 00:06:22,587 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)|)) [2020-09-25 00:06:22,587 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 00:06:22,587 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 00:06:22,587 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-25 00:06:22,587 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 00:06:22,588 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 00:06:22,588 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 4 6) no Hoare annotation was computed. [2020-09-25 00:06:22,588 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-09-25 00:06:22,588 INFO L268 CegarLoopResult]: For program point L5-1(line 5) no Hoare annotation was computed. [2020-09-25 00:06:22,588 INFO L268 CegarLoopResult]: For program point L5-3(lines 4 6) no Hoare annotation was computed. [2020-09-25 00:06:22,588 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 4 6) no Hoare annotation was computed. [2020-09-25 00:06:22,589 INFO L268 CegarLoopResult]: For program point L33(line 33) no Hoare annotation was computed. [2020-09-25 00:06:22,589 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-09-25 00:06:22,589 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 11 58) no Hoare annotation was computed. [2020-09-25 00:06:22,589 INFO L268 CegarLoopResult]: For program point L23(lines 23 56) no Hoare annotation was computed. [2020-09-25 00:06:22,589 INFO L268 CegarLoopResult]: For program point L52(line 52) no Hoare annotation was computed. [2020-09-25 00:06:22,590 INFO L268 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-09-25 00:06:22,590 INFO L268 CegarLoopResult]: For program point L17(lines 17 57) no Hoare annotation was computed. [2020-09-25 00:06:22,590 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-09-25 00:06:22,590 INFO L268 CegarLoopResult]: For program point L46(line 46) no Hoare annotation was computed. [2020-09-25 00:06:22,590 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 11 58) no Hoare annotation was computed. [2020-09-25 00:06:22,590 INFO L268 CegarLoopResult]: For program point L44(lines 44 53) no Hoare annotation was computed. [2020-09-25 00:06:22,590 INFO L268 CegarLoopResult]: For program point L42(line 42) no Hoare annotation was computed. [2020-09-25 00:06:22,591 INFO L268 CegarLoopResult]: For program point L40(line 40) no Hoare annotation was computed. [2020-09-25 00:06:22,591 INFO L268 CegarLoopResult]: For program point L34(line 34) no Hoare annotation was computed. [2020-09-25 00:06:22,591 INFO L268 CegarLoopResult]: For program point L32(line 32) no Hoare annotation was computed. [2020-09-25 00:06:22,592 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 46) no Hoare annotation was computed. [2020-09-25 00:06:22,592 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 11 58) the Hoare annotation is: (= |old(~__return_65~0)| ~__return_65~0) [2020-09-25 00:06:22,592 INFO L268 CegarLoopResult]: For program point L51(line 51) no Hoare annotation was computed. [2020-09-25 00:06:22,593 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-25 00:06:22,593 INFO L268 CegarLoopResult]: For program point L16-1(line 16) no Hoare annotation was computed. [2020-09-25 00:06:22,593 INFO L268 CegarLoopResult]: For program point L47(line 47) no Hoare annotation was computed. [2020-09-25 00:06:22,593 INFO L268 CegarLoopResult]: For program point L14(line 14) no Hoare annotation was computed. [2020-09-25 00:06:22,593 INFO L268 CegarLoopResult]: For program point L16-2(line 16) no Hoare annotation was computed. [2020-09-25 00:06:22,593 INFO L268 CegarLoopResult]: For program point L43(line 43) no Hoare annotation was computed. [2020-09-25 00:06:22,594 INFO L268 CegarLoopResult]: For program point L41(line 41) no Hoare annotation was computed. [2020-09-25 00:06:22,594 INFO L264 CegarLoopResult]: At program point L35(lines 28 56) the Hoare annotation is: (let ((.cse0 (= |old(~__return_65~0)| ~__return_65~0)) (.cse1 (<= main_~main__x~0 (+ main_~main__y~0 15)))) (or (and (<= (+ main_~main__x~0 53) (* 2 main_~main__y~0)) .cse0 (<= (+ main_~main__y~0 main_~main__x~0) (+ (* 3 (div (+ main_~main__x~0 (- 49)) 2)) 100)) .cse1) (and (<= (+ main_~main__x~0 5) (* 6 main_~main__y~0)) .cse0 .cse1) (and (<= 0 (+ main_~main__y~0 (* 2 main_~main__x~0) (* 3 (div (+ (* main_~main__y~0 (- 1)) (* main_~main__x~0 (- 1)) (- 49)) 2)) 99)) .cse0 (<= (+ main_~main__x~0 51) main_~main__y~0)) (let ((.cse2 (+ main_~main__x~0 50))) (and .cse0 (<= 0 .cse2) (<= .cse2 0))) (and .cse0 (<= (+ main_~main__x~0 56) (* 3 main_~main__y~0)) .cse1))) [2020-09-25 00:06:22,628 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 12:06:22 BoogieIcfgContainer [2020-09-25 00:06:22,628 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 00:06:22,632 INFO L168 Benchmark]: Toolchain (without parser) took 28135.31 ms. Allocated memory was 139.5 MB in the beginning and 388.5 MB in the end (delta: 249.0 MB). Free memory was 102.9 MB in the beginning and 193.6 MB in the end (delta: -90.6 MB). Peak memory consumption was 158.4 MB. Max. memory is 7.1 GB. [2020-09-25 00:06:22,633 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 00:06:22,639 INFO L168 Benchmark]: CACSL2BoogieTranslator took 310.62 ms. Allocated memory is still 139.5 MB. Free memory was 102.3 MB in the beginning and 92.8 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2020-09-25 00:06:22,645 INFO L168 Benchmark]: Boogie Preprocessor took 115.87 ms. Allocated memory was 139.5 MB in the beginning and 203.4 MB in the end (delta: 64.0 MB). Free memory was 92.8 MB in the beginning and 182.5 MB in the end (delta: -89.7 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. [2020-09-25 00:06:22,647 INFO L168 Benchmark]: RCFGBuilder took 359.70 ms. Allocated memory is still 203.4 MB. Free memory was 182.1 MB in the beginning and 168.1 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. [2020-09-25 00:06:22,648 INFO L168 Benchmark]: TraceAbstraction took 27328.17 ms. Allocated memory was 203.4 MB in the beginning and 388.5 MB in the end (delta: 185.1 MB). Free memory was 167.5 MB in the beginning and 193.6 MB in the end (delta: -26.1 MB). Peak memory consumption was 159.0 MB. Max. memory is 7.1 GB. [2020-09-25 00:06:22,655 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 310.62 ms. Allocated memory is still 139.5 MB. Free memory was 102.3 MB in the beginning and 92.8 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 115.87 ms. Allocated memory was 139.5 MB in the beginning and 203.4 MB in the end (delta: 64.0 MB). Free memory was 92.8 MB in the beginning and 182.5 MB in the end (delta: -89.7 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 359.70 ms. Allocated memory is still 203.4 MB. Free memory was 182.1 MB in the beginning and 168.1 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 27328.17 ms. Allocated memory was 203.4 MB in the beginning and 388.5 MB in the end (delta: 185.1 MB). Free memory was 167.5 MB in the beginning and 193.6 MB in the end (delta: -26.1 MB). Peak memory consumption was 159.0 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: ((((((main__x + 53 <= 2 * main__y && \old(__return_65) == __return_65) && main__y + main__x <= 3 * ((main__x + -49) / 2) + 100) && main__x <= main__y + 15) || ((main__x + 5 <= 6 * main__y && \old(__return_65) == __return_65) && main__x <= main__y + 15)) || ((0 <= main__y + 2 * main__x + 3 * ((main__y * -1 + main__x * -1 + -49) / 2) + 99 && \old(__return_65) == __return_65) && main__x + 51 <= main__y)) || ((\old(__return_65) == __return_65 && 0 <= main__x + 50) && main__x + 50 <= 0)) || ((\old(__return_65) == __return_65 && main__x + 56 <= 3 * main__y) && main__x <= main__y + 15) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 39 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 26.9s, OverallIterations: 11, TraceHistogramMax: 10, AutomataDifference: 6.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 209 SDtfs, 645 SDslu, 639 SDs, 0 SdLazy, 4032 SolverSat, 211 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 354 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 321 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2505 ImplicationChecksByTransitivity, 5.4s 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: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 10 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 15 NumberOfFragments, 117 HoareAnnotationTreeSize, 5 FomulaSimplifications, 128 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 97 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 19.4s InterpolantComputationTime, 451 NumberOfCodeBlocks, 451 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 440 ConstructedInterpolants, 0 QuantifiedInterpolants, 102484 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...