/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label19.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 20:33:49,673 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 20:33:49,677 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 20:33:49,725 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 20:33:49,726 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 20:33:49,736 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 20:33:49,739 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 20:33:49,743 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 20:33:49,746 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 20:33:49,750 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 20:33:49,751 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 20:33:49,752 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 20:33:49,753 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 20:33:49,756 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 20:33:49,759 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 20:33:49,761 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 20:33:49,762 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 20:33:49,763 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 20:33:49,765 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 20:33:49,775 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 20:33:49,777 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 20:33:49,778 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 20:33:49,779 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 20:33:49,780 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 20:33:49,783 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 20:33:49,783 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 20:33:49,784 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 20:33:49,787 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 20:33:49,787 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 20:33:49,788 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 20:33:49,789 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 20:33:49,789 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 20:33:49,790 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 20:33:49,791 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 20:33:49,792 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 20:33:49,793 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 20:33:49,794 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 20:33:49,794 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 20:33:49,794 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 20:33:49,796 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 20:33:49,797 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 20:33:49,798 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 20:33:49,844 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 20:33:49,845 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 20:33:49,847 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 20:33:49,848 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 20:33:49,848 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 20:33:49,848 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 20:33:49,849 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 20:33:49,849 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 20:33:49,849 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 20:33:49,849 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 20:33:49,850 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 20:33:49,851 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 20:33:49,851 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 20:33:49,851 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 20:33:49,852 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 20:33:49,852 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 20:33:49,852 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 20:33:49,852 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 20:33:49,852 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 20:33:49,853 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 20:33:49,853 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 20:33:49,853 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 20:33:49,853 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 20:33:49,853 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 20:33:49,854 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 20:33:49,854 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 20:33:49,854 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 20:33:49,854 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 20:33:49,854 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 20:33:49,855 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; [2020-09-24 20:33:50,308 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 20:33:50,326 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 20:33:50,331 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 20:33:50,332 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 20:33:50,333 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 20:33:50,334 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label19.c [2020-09-24 20:33:50,410 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2487f2a11/83049213eb89471b85c2e5836eac8758/FLAG4d1166f48 [2020-09-24 20:33:50,994 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 20:33:50,995 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label19.c [2020-09-24 20:33:51,020 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2487f2a11/83049213eb89471b85c2e5836eac8758/FLAG4d1166f48 [2020-09-24 20:33:51,244 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2487f2a11/83049213eb89471b85c2e5836eac8758 [2020-09-24 20:33:51,259 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 20:33:51,266 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 20:33:51,268 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 20:33:51,268 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 20:33:51,272 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 20:33:51,273 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:33:51" (1/1) ... [2020-09-24 20:33:51,278 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11e01188 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:33:51, skipping insertion in model container [2020-09-24 20:33:51,278 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:33:51" (1/1) ... [2020-09-24 20:33:51,287 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 20:33:51,340 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 20:33:51,777 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:33:51,787 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 20:33:52,078 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:33:52,129 INFO L208 MainTranslator]: Completed translation [2020-09-24 20:33:52,131 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:33:52 WrapperNode [2020-09-24 20:33:52,131 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 20:33:52,133 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 20:33:52,133 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 20:33:52,133 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 20:33:52,155 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:33:52" (1/1) ... [2020-09-24 20:33:52,158 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:33:52" (1/1) ... [2020-09-24 20:33:52,194 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:33:52" (1/1) ... [2020-09-24 20:33:52,194 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:33:52" (1/1) ... [2020-09-24 20:33:52,254 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:33:52" (1/1) ... [2020-09-24 20:33:52,273 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:33:52" (1/1) ... [2020-09-24 20:33:52,278 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:33:52" (1/1) ... [2020-09-24 20:33:52,286 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 20:33:52,287 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 20:33:52,287 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 20:33:52,287 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 20:33:52,288 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:33:52" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 20:33:52,394 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 20:33:52,394 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 20:33:52,395 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 20:33:52,395 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 20:33:52,395 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 20:33:52,395 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 20:33:52,395 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 20:33:52,396 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 20:33:52,396 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 20:33:52,396 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 20:33:52,396 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 20:33:53,786 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 20:33:53,787 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 20:33:53,797 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:33:53 BoogieIcfgContainer [2020-09-24 20:33:53,797 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 20:33:53,799 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 20:33:53,799 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 20:33:53,804 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 20:33:53,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 08:33:51" (1/3) ... [2020-09-24 20:33:53,805 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5aa3c231 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:33:53, skipping insertion in model container [2020-09-24 20:33:53,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:33:52" (2/3) ... [2020-09-24 20:33:53,806 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5aa3c231 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:33:53, skipping insertion in model container [2020-09-24 20:33:53,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:33:53" (3/3) ... [2020-09-24 20:33:53,809 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label19.c [2020-09-24 20:33:53,824 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 20:33:53,836 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 20:33:53,863 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 20:33:53,904 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 20:33:53,904 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 20:33:53,904 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 20:33:53,904 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 20:33:53,905 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 20:33:53,905 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 20:33:53,905 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 20:33:53,905 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 20:33:53,942 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-24 20:33:53,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-09-24 20:33:53,962 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:33:53,964 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] [2020-09-24 20:33:53,965 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:33:53,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:33:53,974 INFO L82 PathProgramCache]: Analyzing trace with hash 405983745, now seen corresponding path program 1 times [2020-09-24 20:33:53,987 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:33:53,987 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1226177907] [2020-09-24 20:33:53,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:33:54,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:33:54,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:33:54,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:33:54,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:33:57,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:33:57,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:33:58,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:33:58,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:33:59,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:33:59,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-09-24 20:33:59,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 20:33:59,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 20:33:59,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:33:59,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-24 20:33:59,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 20:33:59,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-09-24 20:33:59,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 20:33:59,794 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 32 [2020-09-24 20:33:59,953 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 32 [2020-09-24 20:34:00,115 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 33 [2020-09-24 20:34:00,352 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 31 [2020-09-24 20:34:00,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:34:00,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:34:00,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:34:01,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:34:01,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 20:34:01,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:34:01,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-09-24 20:34:01,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:34:01,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:34:01,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:34:01,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 20:34:01,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:34:01,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:34:01,207 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1226177907] [2020-09-24 20:34:01,209 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:34:01,210 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2020-09-24 20:34:01,211 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098005723] [2020-09-24 20:34:01,218 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-24 20:34:01,218 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:34:01,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-24 20:34:01,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=280, Unknown=0, NotChecked=0, Total=380 [2020-09-24 20:34:01,240 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 20 states. [2020-09-24 20:34:01,896 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 82 [2020-09-24 20:34:02,164 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 82 [2020-09-24 20:34:02,414 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 87 [2020-09-24 20:34:02,726 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 83 [2020-09-24 20:34:03,156 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 82 [2020-09-24 20:34:03,610 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 75 [2020-09-24 20:34:03,859 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 82 [2020-09-24 20:34:04,134 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 81 [2020-09-24 20:34:04,300 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-09-24 20:34:04,535 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 81 [2020-09-24 20:34:05,866 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 81 [2020-09-24 20:34:06,081 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-09-24 20:34:06,647 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 80 [2020-09-24 20:34:07,169 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 75 [2020-09-24 20:34:07,652 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 80 [2020-09-24 20:34:07,966 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-09-24 20:34:08,411 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-09-24 20:34:08,660 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-09-24 20:34:09,135 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 75 [2020-09-24 20:34:09,412 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 75 [2020-09-24 20:34:10,886 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 62 [2020-09-24 20:34:12,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:34:12,452 INFO L93 Difference]: Finished difference Result 1675 states and 2355 transitions. [2020-09-24 20:34:12,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-09-24 20:34:12,454 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 118 [2020-09-24 20:34:12,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:34:12,483 INFO L225 Difference]: With dead ends: 1675 [2020-09-24 20:34:12,483 INFO L226 Difference]: Without dead ends: 1038 [2020-09-24 20:34:12,500 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1017 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=943, Invalid=2479, Unknown=0, NotChecked=0, Total=3422 [2020-09-24 20:34:12,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1038 states. [2020-09-24 20:34:12,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1038 to 960. [2020-09-24 20:34:12,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 960 states. [2020-09-24 20:34:12,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 960 states to 960 states and 1137 transitions. [2020-09-24 20:34:12,621 INFO L78 Accepts]: Start accepts. Automaton has 960 states and 1137 transitions. Word has length 118 [2020-09-24 20:34:12,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:34:12,622 INFO L479 AbstractCegarLoop]: Abstraction has 960 states and 1137 transitions. [2020-09-24 20:34:12,622 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-24 20:34:12,623 INFO L276 IsEmpty]: Start isEmpty. Operand 960 states and 1137 transitions. [2020-09-24 20:34:12,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-09-24 20:34:12,631 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:34:12,632 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] [2020-09-24 20:34:12,632 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 20:34:12,632 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:34:12,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:34:12,633 INFO L82 PathProgramCache]: Analyzing trace with hash 129162490, now seen corresponding path program 1 times [2020-09-24 20:34:12,633 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:34:12,633 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1401827223] [2020-09-24 20:34:12,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:34:12,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:34:12,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:34:12,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:34:13,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:34:14,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:34:14,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:34:14,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:34:15,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:34:16,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:34:17,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:34:17,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-09-24 20:34:17,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 20:34:17,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-24 20:34:17,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:34:17,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-09-24 20:34:17,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 20:34:17,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-09-24 20:34:17,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:34:18,561 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 43 [2020-09-24 20:34:18,972 WARN L193 SmtUtils]: Spent 389.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 50 [2020-09-24 20:34:19,363 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 50 [2020-09-24 20:34:19,748 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 48 [2020-09-24 20:34:20,050 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 48 [2020-09-24 20:34:20,443 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 48 [2020-09-24 20:34:20,748 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 47 [2020-09-24 20:34:21,037 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 43 [2020-09-24 20:34:21,390 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 44 [2020-09-24 20:34:21,735 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 40 [2020-09-24 20:34:22,116 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 48 [2020-09-24 20:34:22,345 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 30 [2020-09-24 20:34:22,587 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 31 [2020-09-24 20:34:22,744 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 26 [2020-09-24 20:34:22,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:34:22,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:34:22,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:34:22,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:34:22,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 20:34:22,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:34:22,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-24 20:34:22,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:34:22,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:34:22,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:34:22,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 20:34:22,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:34:22,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 20:34:22,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:34:22,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:34:22,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:34:22,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 20:34:22,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:34:22,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-24 20:34:22,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:34:22,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:34:22,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 20:34:22,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 20:34:22,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:34:23,234 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 20:34:23,235 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1401827223] [2020-09-24 20:34:23,235 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:34:23,235 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-09-24 20:34:23,235 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337220153] [2020-09-24 20:34:23,237 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-09-24 20:34:23,237 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:34:23,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-09-24 20:34:23,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=538, Unknown=0, NotChecked=0, Total=702 [2020-09-24 20:34:23,239 INFO L87 Difference]: Start difference. First operand 960 states and 1137 transitions. Second operand 27 states. [2020-09-24 20:34:23,970 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-09-24 20:34:24,332 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 104 [2020-09-24 20:34:25,211 WARN L193 SmtUtils]: Spent 379.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 107 [2020-09-24 20:34:25,708 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 107 [2020-09-24 20:34:26,096 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 87 [2020-09-24 20:34:26,445 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 90 [2020-09-24 20:34:26,722 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-09-24 20:34:27,057 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 93 [2020-09-24 20:34:27,339 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2020-09-24 20:34:27,826 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 90 [2020-09-24 20:34:28,073 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 49 [2020-09-24 20:34:28,458 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 93 [2020-09-24 20:34:28,716 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 52 [2020-09-24 20:34:29,405 WARN L193 SmtUtils]: Spent 362.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 108 [2020-09-24 20:34:29,649 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2020-09-24 20:34:30,096 WARN L193 SmtUtils]: Spent 367.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 106 [2020-09-24 20:34:30,632 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 106 [2020-09-24 20:34:31,098 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 91 [2020-09-24 20:34:31,511 WARN L193 SmtUtils]: Spent 349.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 108 [2020-09-24 20:34:31,975 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 103 [2020-09-24 20:34:32,324 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 91 [2020-09-24 20:34:32,678 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 89 [2020-09-24 20:34:33,131 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 103 [2020-09-24 20:34:33,441 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 89 [2020-09-24 20:34:33,767 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 91 [2020-09-24 20:34:34,152 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 91 [2020-09-24 20:34:34,703 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 99 [2020-09-24 20:34:34,975 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2020-09-24 20:34:35,385 WARN L193 SmtUtils]: Spent 349.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 108 [2020-09-24 20:34:35,662 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 58 [2020-09-24 20:34:36,068 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 86 [2020-09-24 20:34:36,292 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 45 [2020-09-24 20:34:36,644 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 87 [2020-09-24 20:34:36,934 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 92 [2020-09-24 20:34:37,125 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 46 [2020-09-24 20:34:37,412 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2020-09-24 20:34:37,771 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 92 [2020-09-24 20:34:38,215 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 90 [2020-09-24 20:34:38,457 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 49 [2020-09-24 20:34:38,849 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 90 [2020-09-24 20:34:39,106 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 49 [2020-09-24 20:34:39,400 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 88 [2020-09-24 20:34:39,965 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 73 [2020-09-24 20:34:40,306 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 74 [2020-09-24 20:34:41,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:34:41,809 INFO L93 Difference]: Finished difference Result 2462 states and 3010 transitions. [2020-09-24 20:34:41,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2020-09-24 20:34:41,810 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 135 [2020-09-24 20:34:41,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:34:41,820 INFO L225 Difference]: With dead ends: 2462 [2020-09-24 20:34:41,820 INFO L226 Difference]: Without dead ends: 1524 [2020-09-24 20:34:41,827 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2210 ImplicationChecksByTransitivity, 17.8s TimeCoverageRelationStatistics Valid=1933, Invalid=5207, Unknown=0, NotChecked=0, Total=7140 [2020-09-24 20:34:41,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1524 states. [2020-09-24 20:34:41,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1524 to 1364. [2020-09-24 20:34:41,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1364 states. [2020-09-24 20:34:41,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1364 states to 1364 states and 1638 transitions. [2020-09-24 20:34:41,887 INFO L78 Accepts]: Start accepts. Automaton has 1364 states and 1638 transitions. Word has length 135 [2020-09-24 20:34:41,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:34:41,888 INFO L479 AbstractCegarLoop]: Abstraction has 1364 states and 1638 transitions. [2020-09-24 20:34:41,888 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-09-24 20:34:41,888 INFO L276 IsEmpty]: Start isEmpty. Operand 1364 states and 1638 transitions. [2020-09-24 20:34:41,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-24 20:34:41,893 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:34:41,893 INFO L422 BasicCegarLoop]: trace histogram [2, 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] [2020-09-24 20:34:41,893 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 20:34:41,894 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:34:41,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:34:41,894 INFO L82 PathProgramCache]: Analyzing trace with hash -499508160, now seen corresponding path program 1 times [2020-09-24 20:34:41,894 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:34:41,895 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1511813642] [2020-09-24 20:34:41,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:34:41,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:34:41,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:34:42,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:34:42,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:34:42,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:34:42,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:34:44,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:34:44,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:34:44,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:34:45,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking...