/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/Problem01_label36.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 20:31:28,746 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 20:31:28,750 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 20:31:28,793 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 20:31:28,794 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 20:31:28,801 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 20:31:28,803 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 20:31:28,806 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 20:31:28,809 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 20:31:28,812 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 20:31:28,813 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 20:31:28,814 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 20:31:28,814 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 20:31:28,816 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 20:31:28,819 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 20:31:28,821 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 20:31:28,822 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 20:31:28,823 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 20:31:28,825 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 20:31:28,833 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 20:31:28,835 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 20:31:28,836 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 20:31:28,837 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 20:31:28,838 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 20:31:28,845 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 20:31:28,845 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 20:31:28,845 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 20:31:28,849 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 20:31:28,850 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 20:31:28,851 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 20:31:28,851 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 20:31:28,852 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 20:31:28,855 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 20:31:28,856 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 20:31:28,857 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 20:31:28,857 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 20:31:28,858 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 20:31:28,858 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 20:31:28,858 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 20:31:28,859 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 20:31:28,860 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 20:31:28,861 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 20:31:28,885 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 20:31:28,886 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 20:31:28,887 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 20:31:28,887 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 20:31:28,887 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 20:31:28,888 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 20:31:28,888 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 20:31:28,888 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 20:31:28,888 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 20:31:28,888 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 20:31:28,889 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 20:31:28,889 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 20:31:28,889 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 20:31:28,889 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 20:31:28,889 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 20:31:28,890 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 20:31:28,890 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 20:31:28,890 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 20:31:28,890 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 20:31:28,890 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 20:31:28,891 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 20:31:28,891 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 20:31:28,891 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 20:31:28,891 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 20:31:28,891 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 20:31:28,892 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 20:31:28,892 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 20:31:28,892 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 20:31:28,892 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 20:31:28,892 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 20:31:29,320 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 20:31:29,337 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 20:31:29,341 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 20:31:29,343 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 20:31:29,343 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 20:31:29,344 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label36.c [2020-09-24 20:31:29,414 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7ec6fd1e3/82f635fe2f304a499415bdce520e852c/FLAG48ccf99e0 [2020-09-24 20:31:30,070 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 20:31:30,073 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label36.c [2020-09-24 20:31:30,089 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7ec6fd1e3/82f635fe2f304a499415bdce520e852c/FLAG48ccf99e0 [2020-09-24 20:31:30,258 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7ec6fd1e3/82f635fe2f304a499415bdce520e852c [2020-09-24 20:31:30,272 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 20:31:30,277 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 20:31:30,278 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 20:31:30,279 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 20:31:30,284 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 20:31:30,285 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:31:30" (1/1) ... [2020-09-24 20:31:30,290 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7be095dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:31:30, skipping insertion in model container [2020-09-24 20:31:30,290 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:31:30" (1/1) ... [2020-09-24 20:31:30,300 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 20:31:30,350 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 20:31:30,957 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:31:30,972 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 20:31:31,068 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:31:31,087 INFO L208 MainTranslator]: Completed translation [2020-09-24 20:31:31,088 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:31:31 WrapperNode [2020-09-24 20:31:31,088 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 20:31:31,089 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 20:31:31,089 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 20:31:31,089 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 20:31:31,103 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:31:31" (1/1) ... [2020-09-24 20:31:31,103 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:31:31" (1/1) ... [2020-09-24 20:31:31,122 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:31:31" (1/1) ... [2020-09-24 20:31:31,122 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:31:31" (1/1) ... [2020-09-24 20:31:31,170 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:31:31" (1/1) ... [2020-09-24 20:31:31,181 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:31:31" (1/1) ... [2020-09-24 20:31:31,185 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:31:31" (1/1) ... [2020-09-24 20:31:31,192 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 20:31:31,192 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 20:31:31,193 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 20:31:31,193 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 20:31:31,194 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:31:31" (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 20:31:31,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 20:31:31,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 20:31:31,271 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 20:31:31,271 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 20:31:31,271 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 20:31:31,271 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 20:31:31,271 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 20:31:31,271 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 20:31:31,271 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 20:31:31,272 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 20:31:31,272 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 20:31:32,526 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 20:31:32,527 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 20:31:32,536 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:31:32 BoogieIcfgContainer [2020-09-24 20:31:32,536 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 20:31:32,537 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 20:31:32,537 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 20:31:32,541 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 20:31:32,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 08:31:30" (1/3) ... [2020-09-24 20:31:32,542 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40fc2557 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:31:32, skipping insertion in model container [2020-09-24 20:31:32,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:31:31" (2/3) ... [2020-09-24 20:31:32,543 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40fc2557 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:31:32, skipping insertion in model container [2020-09-24 20:31:32,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:31:32" (3/3) ... [2020-09-24 20:31:32,545 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label36.c [2020-09-24 20:31:32,557 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 20:31:32,567 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 20:31:32,589 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 20:31:32,627 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 20:31:32,627 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 20:31:32,627 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 20:31:32,627 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 20:31:32,627 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 20:31:32,627 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 20:31:32,628 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 20:31:32,628 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 20:31:32,658 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-24 20:31:32,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-09-24 20:31:32,678 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:31:32,679 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] [2020-09-24 20:31:32,679 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:31:32,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:31:32,687 INFO L82 PathProgramCache]: Analyzing trace with hash -888076393, now seen corresponding path program 1 times [2020-09-24 20:31:32,698 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:31:32,699 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2102562472] [2020-09-24 20:31:32,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:31:33,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:31:33,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:31:33,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:31:34,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:31:35,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:31:35,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:31:38,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:31:38,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-09-24 20:31:38,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 20:31:38,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-24 20:31:38,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:31:38,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-09-24 20:31:38,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 20:31:38,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-24 20:31:38,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 20:31:38,786 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 37 [2020-09-24 20:31:38,954 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 40 [2020-09-24 20:31:39,185 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 48 [2020-09-24 20:31:39,421 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 48 [2020-09-24 20:31:39,756 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 43 [2020-09-24 20:31:39,975 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 43 [2020-09-24 20:31:40,203 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 46 [2020-09-24 20:31:40,504 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 47 [2020-09-24 20:31:40,790 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 46 [2020-09-24 20:31:41,075 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 46 [2020-09-24 20:31:41,344 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 45 [2020-09-24 20:31:41,610 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 44 [2020-09-24 20:31:41,865 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 44 [2020-09-24 20:31:42,118 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 43 [2020-09-24 20:31:42,353 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 41 [2020-09-24 20:31:42,577 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 40 [2020-09-24 20:31:42,745 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 35 [2020-09-24 20:31:42,952 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 33 [2020-09-24 20:31:43,168 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 31 [2020-09-24 20:31:43,364 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 30 [2020-09-24 20:31:43,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:31:43,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:31:43,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:31:43,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:31:43,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 20:31:43,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:31:43,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-09-24 20:31:43,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:31:43,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 20:31:43,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:31:43,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 20:31:43,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:31:44,233 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 20:31:44,235 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2102562472] [2020-09-24 20:31:44,237 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:31:44,237 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2020-09-24 20:31:44,238 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769417728] [2020-09-24 20:31:44,244 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-09-24 20:31:44,245 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:31:44,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-09-24 20:31:44,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=810, Unknown=0, NotChecked=0, Total=1190 [2020-09-24 20:31:44,266 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 35 states. [2020-09-24 20:31:44,685 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 80 [2020-09-24 20:31:44,887 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 80 [2020-09-24 20:31:45,101 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 88 [2020-09-24 20:31:45,368 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 94 [2020-09-24 20:31:45,517 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 46 [2020-09-24 20:31:45,808 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 96 [2020-09-24 20:31:46,278 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 98 [2020-09-24 20:31:46,748 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 99 [2020-09-24 20:31:47,114 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 94 [2020-09-24 20:31:47,582 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 94 [2020-09-24 20:31:47,993 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 99 [2020-09-24 20:31:48,506 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 99 [2020-09-24 20:31:49,109 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 99 [2020-09-24 20:31:49,615 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 99 [2020-09-24 20:31:49,826 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 44 [2020-09-24 20:31:50,184 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 99 [2020-09-24 20:31:50,667 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 99 [2020-09-24 20:31:51,111 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 99 [2020-09-24 20:31:51,312 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-09-24 20:31:51,661 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 88 [2020-09-24 20:31:51,944 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2020-09-24 20:31:52,336 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 99 [2020-09-24 20:31:52,759 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 91 [2020-09-24 20:31:53,095 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 98 [2020-09-24 20:31:53,614 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 80 [2020-09-24 20:31:53,970 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 86 [2020-09-24 20:31:54,302 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 98 [2020-09-24 20:31:54,486 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-09-24 20:31:54,939 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 93 [2020-09-24 20:31:55,183 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 86 [2020-09-24 20:31:55,374 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-09-24 20:31:55,684 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 91 [2020-09-24 20:31:56,044 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 90 [2020-09-24 20:31:56,575 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 89 [2020-09-24 20:31:56,932 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 91 [2020-09-24 20:31:57,186 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 49 [2020-09-24 20:31:57,529 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 90 [2020-09-24 20:31:57,990 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 91 [2020-09-24 20:31:58,282 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 88 [2020-09-24 20:31:58,591 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 84 [2020-09-24 20:31:58,907 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 85 [2020-09-24 20:31:59,415 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 86 [2020-09-24 20:31:59,565 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-09-24 20:31:59,726 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-09-24 20:31:59,905 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-09-24 20:32:00,267 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-09-24 20:32:00,608 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-09-24 20:32:00,820 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2020-09-24 20:32:01,159 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 91 [2020-09-24 20:32:01,455 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 91 [2020-09-24 20:32:01,759 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 36 [2020-09-24 20:32:02,178 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 91 [2020-09-24 20:32:02,397 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-09-24 20:32:02,712 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-09-24 20:32:03,065 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 91 [2020-09-24 20:32:03,653 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 91 [2020-09-24 20:32:03,919 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 84 [2020-09-24 20:32:04,114 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-09-24 20:32:04,546 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 82 [2020-09-24 20:32:04,893 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-09-24 20:32:05,582 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 91 [2020-09-24 20:32:05,858 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 79 [2020-09-24 20:32:06,129 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 77 [2020-09-24 20:32:06,335 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-09-24 20:32:06,566 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 72 [2020-09-24 20:32:06,825 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 73 [2020-09-24 20:32:07,037 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-09-24 20:32:07,347 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-09-24 20:32:07,701 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-09-24 20:32:08,067 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 89 [2020-09-24 20:32:08,439 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 89 [2020-09-24 20:32:08,670 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-09-24 20:32:08,946 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-09-24 20:32:09,376 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 80 [2020-09-24 20:32:09,598 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 41 [2020-09-24 20:32:09,853 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-09-24 20:32:10,113 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-09-24 20:32:10,486 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-09-24 20:32:10,711 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-09-24 20:32:10,983 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-09-24 20:32:11,197 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-09-24 20:32:11,531 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2020-09-24 20:32:11,933 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-09-24 20:32:13,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:32:13,528 INFO L93 Difference]: Finished difference Result 1967 states and 2792 transitions. [2020-09-24 20:32:13,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2020-09-24 20:32:13,530 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 130 [2020-09-24 20:32:13,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:32:13,562 INFO L225 Difference]: With dead ends: 1967 [2020-09-24 20:32:13,562 INFO L226 Difference]: Without dead ends: 1349 [2020-09-24 20:32:13,580 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7128 ImplicationChecksByTransitivity, 27.6s TimeCoverageRelationStatistics Valid=5030, Invalid=14992, Unknown=0, NotChecked=0, Total=20022 [2020-09-24 20:32:13,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1349 states. [2020-09-24 20:32:13,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1349 to 1147. [2020-09-24 20:32:13,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1147 states. [2020-09-24 20:32:13,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1147 states to 1147 states and 1395 transitions. [2020-09-24 20:32:13,720 INFO L78 Accepts]: Start accepts. Automaton has 1147 states and 1395 transitions. Word has length 130 [2020-09-24 20:32:13,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:32:13,721 INFO L479 AbstractCegarLoop]: Abstraction has 1147 states and 1395 transitions. [2020-09-24 20:32:13,722 INFO L480 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-09-24 20:32:13,722 INFO L276 IsEmpty]: Start isEmpty. Operand 1147 states and 1395 transitions. [2020-09-24 20:32:13,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-09-24 20:32:13,732 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:32:13,733 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-24 20:32:13,733 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 20:32:13,733 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:32:13,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:32:13,734 INFO L82 PathProgramCache]: Analyzing trace with hash 2092263846, now seen corresponding path program 1 times [2020-09-24 20:32:13,734 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:32:13,734 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1097600050] [2020-09-24 20:32:13,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:32:13,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:32:13,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:32:13,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:32:14,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:32:14,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:32:14,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:32:15,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:32:15,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:32:17,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:32:18,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:32:18,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:32:18,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:32:18,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-09-24 20:32:18,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-24 20:32:18,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-09-24 20:32:18,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:32:18,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-09-24 20:32:18,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 20:32:18,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-09-24 20:32:18,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:32:19,485 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 40 [2020-09-24 20:32:19,706 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 48 [2020-09-24 20:32:20,057 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 50 [2020-09-24 20:32:20,350 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 50 [2020-09-24 20:32:20,655 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 50 [2020-09-24 20:32:20,929 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 42 [2020-09-24 20:32:21,193 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 41 [2020-09-24 20:32:21,535 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 39 [2020-09-24 20:32:21,829 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 39 [2020-09-24 20:32:22,111 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 35 [2020-09-24 20:32:22,358 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 30 [2020-09-24 20:32:22,516 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 26 [2020-09-24 20:32:22,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:32:22,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:32:22,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:32:22,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:32:22,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 20:32:22,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:32:22,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-24 20:32:22,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:32:22,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:32:22,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:32:22,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 20:32:22,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:32:22,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 20:32:22,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:32:22,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:32:22,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:32:22,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:32:22,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 20:32:22,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:32:22,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-09-24 20:32:22,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:32:22,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:32:22,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 20:32:22,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 20:32:22,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:32:23,127 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:32:23,128 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1097600050] [2020-09-24 20:32:23,128 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:32:23,128 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-09-24 20:32:23,129 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909410931] [2020-09-24 20:32:23,131 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-09-24 20:32:23,131 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:32:23,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-09-24 20:32:23,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=259, Invalid=443, Unknown=0, NotChecked=0, Total=702 [2020-09-24 20:32:23,132 INFO L87 Difference]: Start difference. First operand 1147 states and 1395 transitions. Second operand 27 states. [2020-09-24 20:32:23,700 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-09-24 20:32:23,886 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-09-24 20:32:24,351 WARN L193 SmtUtils]: Spent 420.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 116 [2020-09-24 20:32:24,661 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-09-24 20:32:25,015 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-09-24 20:32:25,352 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 66 [2020-09-24 20:32:25,585 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-09-24 20:32:25,927 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 64 [2020-09-24 20:32:26,329 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 96 [2020-09-24 20:32:26,597 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 65 [2020-09-24 20:32:26,814 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 99