/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=LOWLEXORDER --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label26.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 21:42:04,732 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 21:42:04,737 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 21:42:04,788 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 21:42:04,789 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 21:42:04,800 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 21:42:04,803 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 21:42:04,807 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 21:42:04,810 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 21:42:04,814 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 21:42:04,815 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 21:42:04,817 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 21:42:04,817 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 21:42:04,821 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 21:42:04,824 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 21:42:04,826 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 21:42:04,828 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 21:42:04,829 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 21:42:04,831 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 21:42:04,842 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 21:42:04,844 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 21:42:04,846 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 21:42:04,847 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 21:42:04,848 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 21:42:04,851 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 21:42:04,851 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 21:42:04,851 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 21:42:04,854 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 21:42:04,855 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 21:42:04,857 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-09-24 21:42:04,865 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 21:42:04,866 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 21:42:04,868 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 21:42:04,869 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 21:42:04,917 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 21:42:04,917 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 21:42:04,919 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 21:42:04,919 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 21:42:04,919 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 21:42:04,919 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 21:42:04,919 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 21:42:04,920 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 21:42:04,920 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 21:42:04,920 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 21:42:04,920 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 21:42:04,920 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 21:42:04,921 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 21:42:04,921 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 21:42:04,921 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 21:42:04,921 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 21:42:04,922 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 21:42:04,922 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 21:42:04,922 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 21:42:04,922 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 21:42:04,922 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 21:42:04,923 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:42:04,923 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 21:42:04,923 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 21:42:04,923 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 21:42:04,923 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 21:42:04,924 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 21:42:04,924 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 21:42:04,924 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 21:42:04,924 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; [2020-09-24 21:42:05,381 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 21:42:05,399 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 21:42:05,403 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 21:42:05,405 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 21:42:05,405 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 21:42:05,407 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label26.c [2020-09-24 21:42:05,494 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/50746f9b8/1b5ae78496cf40e4ab747e2bb94782e4/FLAG5477f332f [2020-09-24 21:42:06,145 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 21:42:06,149 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label26.c [2020-09-24 21:42:06,173 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/50746f9b8/1b5ae78496cf40e4ab747e2bb94782e4/FLAG5477f332f [2020-09-24 21:42:06,365 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/50746f9b8/1b5ae78496cf40e4ab747e2bb94782e4 [2020-09-24 21:42:06,379 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 21:42:06,386 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 21:42:06,387 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 21:42:06,387 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 21:42:06,391 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 21:42:06,392 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:42:06" (1/1) ... [2020-09-24 21:42:06,397 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55e164ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:42:06, skipping insertion in model container [2020-09-24 21:42:06,397 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:42:06" (1/1) ... [2020-09-24 21:42:06,406 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 21:42:06,459 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 21:42:06,973 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:42:06,982 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 21:42:07,200 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:42:07,221 INFO L208 MainTranslator]: Completed translation [2020-09-24 21:42:07,222 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:42:07 WrapperNode [2020-09-24 21:42:07,222 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 21:42:07,223 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 21:42:07,223 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 21:42:07,223 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 21:42:07,243 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:42:07" (1/1) ... [2020-09-24 21:42:07,244 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:42:07" (1/1) ... [2020-09-24 21:42:07,264 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:42:07" (1/1) ... [2020-09-24 21:42:07,265 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:42:07" (1/1) ... [2020-09-24 21:42:07,305 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:42:07" (1/1) ... [2020-09-24 21:42:07,331 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:42:07" (1/1) ... [2020-09-24 21:42:07,337 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:42:07" (1/1) ... [2020-09-24 21:42:07,356 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 21:42:07,357 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 21:42:07,357 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 21:42:07,361 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 21:42:07,363 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:42:07" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:42:07,490 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 21:42:07,490 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 21:42:07,490 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 21:42:07,490 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 21:42:07,491 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 21:42:07,491 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 21:42:07,491 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 21:42:07,492 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 21:42:07,493 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 21:42:07,494 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 21:42:07,494 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 21:42:08,934 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 21:42:08,935 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 21:42:08,944 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:42:08 BoogieIcfgContainer [2020-09-24 21:42:08,944 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 21:42:08,945 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 21:42:08,945 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 21:42:08,949 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 21:42:08,950 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:42:06" (1/3) ... [2020-09-24 21:42:08,951 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c1c64d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:42:08, skipping insertion in model container [2020-09-24 21:42:08,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:42:07" (2/3) ... [2020-09-24 21:42:08,951 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c1c64d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:42:08, skipping insertion in model container [2020-09-24 21:42:08,952 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:42:08" (3/3) ... [2020-09-24 21:42:08,954 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label26.c [2020-09-24 21:42:08,966 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 21:42:08,977 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 21:42:09,000 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 21:42:09,035 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 21:42:09,035 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 21:42:09,035 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 21:42:09,035 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 21:42:09,035 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 21:42:09,036 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 21:42:09,036 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 21:42:09,036 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 21:42:09,068 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-24 21:42:09,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-09-24 21:42:09,092 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:42:09,094 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:42:09,094 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:42:09,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:42:09,103 INFO L82 PathProgramCache]: Analyzing trace with hash 1114585457, now seen corresponding path program 1 times [2020-09-24 21:42:09,112 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:42:09,113 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1400466314] [2020-09-24 21:42:09,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:42:09,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:42:09,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:10,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:10,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:10,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:13,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:13,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:14,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:14,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:42:14,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-09-24 21:42:14,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 21:42:14,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-09-24 21:42:14,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:42:14,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-24 21:42:14,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-24 21:42:14,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-24 21:42:14,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-09-24 21:42:15,151 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 39 [2020-09-24 21:42:15,301 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 39 [2020-09-24 21:42:15,457 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 35 [2020-09-24 21:42:15,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:42:15,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:42:15,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:15,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:42:15,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 21:42:15,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:42:15,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-09-24 21:42:15,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:42:15,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 21:42:15,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:42:15,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 21:42:15,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:42:16,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:42:16,264 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1400466314] [2020-09-24 21:42:16,267 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:42:16,267 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-09-24 21:42:16,268 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688276823] [2020-09-24 21:42:16,277 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-24 21:42:16,278 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:42:16,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-24 21:42:16,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-09-24 21:42:16,302 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 16 states. [2020-09-24 21:42:16,946 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-09-24 21:42:17,261 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 98 [2020-09-24 21:42:17,624 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 95 [2020-09-24 21:42:18,310 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 80 [2020-09-24 21:42:18,778 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 91 [2020-09-24 21:42:19,956 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 86 [2020-09-24 21:42:20,158 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 77 [2020-09-24 21:42:20,513 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 81 [2020-09-24 21:42:21,281 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 72 [2020-09-24 21:42:21,776 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 66 [2020-09-24 21:42:21,970 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2020-09-24 21:42:22,939 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 73 [2020-09-24 21:42:23,377 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 67 [2020-09-24 21:42:25,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:42:25,942 INFO L93 Difference]: Finished difference Result 1871 states and 2663 transitions. [2020-09-24 21:42:25,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-09-24 21:42:25,944 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 162 [2020-09-24 21:42:25,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:42:25,978 INFO L225 Difference]: With dead ends: 1871 [2020-09-24 21:42:25,978 INFO L226 Difference]: Without dead ends: 1243 [2020-09-24 21:42:25,991 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 468 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=469, Invalid=1171, Unknown=0, NotChecked=0, Total=1640 [2020-09-24 21:42:26,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1243 states. [2020-09-24 21:42:26,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1243 to 1076. [2020-09-24 21:42:26,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1076 states. [2020-09-24 21:42:26,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1076 states to 1076 states and 1295 transitions. [2020-09-24 21:42:26,135 INFO L78 Accepts]: Start accepts. Automaton has 1076 states and 1295 transitions. Word has length 162 [2020-09-24 21:42:26,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:42:26,135 INFO L479 AbstractCegarLoop]: Abstraction has 1076 states and 1295 transitions. [2020-09-24 21:42:26,136 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-24 21:42:26,136 INFO L276 IsEmpty]: Start isEmpty. Operand 1076 states and 1295 transitions. [2020-09-24 21:42:26,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-09-24 21:42:26,151 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:42:26,151 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:42:26,151 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 21:42:26,152 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:42:26,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:42:26,152 INFO L82 PathProgramCache]: Analyzing trace with hash -1612352790, now seen corresponding path program 1 times [2020-09-24 21:42:26,152 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:42:26,153 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [983983657] [2020-09-24 21:42:26,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:42:26,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:42:26,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:26,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:26,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:26,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:28,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:31,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:42:31,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-09-24 21:42:31,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 21:42:31,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-24 21:42:31,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:42:31,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-09-24 21:42:31,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-24 21:42:31,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-09-24 21:42:31,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:42:32,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:42:32,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:42:32,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:32,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:42:32,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 21:42:32,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:42:32,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-24 21:42:32,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:42:32,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:42:32,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:42:32,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 21:42:32,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:42:32,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 21:42:32,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:42:32,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:32,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:42:32,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 21:42:32,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:42:32,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-09-24 21:42:32,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:42:32,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:42:32,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:42:32,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 21:42:32,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:42:32,827 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:42:32,828 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [983983657] [2020-09-24 21:42:32,828 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:42:32,829 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-09-24 21:42:32,829 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766078681] [2020-09-24 21:42:32,833 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-09-24 21:42:32,834 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:42:32,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-09-24 21:42:32,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=416, Unknown=0, NotChecked=0, Total=506 [2020-09-24 21:42:32,836 INFO L87 Difference]: Start difference. First operand 1076 states and 1295 transitions. Second operand 23 states. [2020-09-24 21:42:33,781 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 82 [2020-09-24 21:42:35,644 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 82 [2020-09-24 21:42:36,202 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 82 [2020-09-24 21:42:36,589 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 81 [2020-09-24 21:42:37,130 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 81 [2020-09-24 21:42:37,902 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 81 [2020-09-24 21:42:38,211 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 80 [2020-09-24 21:42:38,527 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 43 [2020-09-24 21:42:39,033 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 78 [2020-09-24 21:42:39,403 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 76 [2020-09-24 21:42:40,542 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 75 [2020-09-24 21:42:40,932 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 75 [2020-09-24 21:42:41,298 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 75 [2020-09-24 21:42:41,706 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 73 [2020-09-24 21:42:42,256 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 74 [2020-09-24 21:42:42,771 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2020-09-24 21:42:44,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:42:44,991 INFO L93 Difference]: Finished difference Result 2562 states and 3131 transitions. [2020-09-24 21:42:44,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-09-24 21:42:44,992 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 179 [2020-09-24 21:42:44,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:42:45,006 INFO L225 Difference]: With dead ends: 2562 [2020-09-24 21:42:45,006 INFO L226 Difference]: Without dead ends: 1566 [2020-09-24 21:42:45,012 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 731 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=784, Invalid=1972, Unknown=0, NotChecked=0, Total=2756 [2020-09-24 21:42:45,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1566 states. [2020-09-24 21:42:45,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1566 to 1340. [2020-09-24 21:42:45,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1340 states. [2020-09-24 21:42:45,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1340 states to 1340 states and 1626 transitions. [2020-09-24 21:42:45,078 INFO L78 Accepts]: Start accepts. Automaton has 1340 states and 1626 transitions. Word has length 179 [2020-09-24 21:42:45,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:42:45,079 INFO L479 AbstractCegarLoop]: Abstraction has 1340 states and 1626 transitions. [2020-09-24 21:42:45,081 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-09-24 21:42:45,081 INFO L276 IsEmpty]: Start isEmpty. Operand 1340 states and 1626 transitions. [2020-09-24 21:42:45,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-09-24 21:42:45,088 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:42:45,089 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:42:45,089 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 21:42:45,089 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:42:45,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:42:45,090 INFO L82 PathProgramCache]: Analyzing trace with hash 1120087763, now seen corresponding path program 1 times [2020-09-24 21:42:45,090 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:42:45,090 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1190497071] [2020-09-24 21:42:45,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:42:45,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:42:45,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:45,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:45,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:45,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:46,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:47,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:47,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:49,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:49,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:49,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:50,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:42:50,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 195 [2020-09-24 21:42:50,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-24 21:42:50,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-24 21:42:50,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:42:50,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-24 21:42:50,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 21:42:50,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-09-24 21:42:50,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:42:50,735 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 40 [2020-09-24 21:42:50,882 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 35 [2020-09-24 21:42:51,015 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 31 [2020-09-24 21:42:51,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:42:51,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:42:51,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:51,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:42:51,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 21:42:51,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:42:51,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-09-24 21:42:51,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:42:51,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:42:51,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:42:51,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 21:42:51,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:42:51,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 21:42:51,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:42:51,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:51,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:51,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:42:51,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:42:51,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:42:51,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-09-24 21:42:51,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:42:51,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:42:51,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:42:51,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 21:42:51,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:42:51,831 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:42:51,832 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1190497071] [2020-09-24 21:42:51,832 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:42:51,832 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-09-24 21:42:51,833 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758100569] [2020-09-24 21:42:51,834 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-24 21:42:51,834 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:42:51,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-24 21:42:51,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2020-09-24 21:42:51,835 INFO L87 Difference]: Start difference. First operand 1340 states and 1626 transitions. Second operand 20 states. [2020-09-24 21:42:52,377 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-09-24 21:42:52,605 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 83 [2020-09-24 21:42:52,884 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 101 [2020-09-24 21:42:53,370 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 97 [2020-09-24 21:42:53,681 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 94 [2020-09-24 21:42:54,260 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 84 [2020-09-24 21:42:54,615 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 79 [2020-09-24 21:42:54,902 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 91 [2020-09-24 21:42:55,704 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2020-09-24 21:42:56,117 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2020-09-24 21:42:56,407 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-09-24 21:42:56,871 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-09-24 21:42:57,246 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 86 [2020-09-24 21:42:57,741 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-09-24 21:42:57,991 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 94