/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 interpolation-heuristic=FIRST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 16:13:44,778 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 16:13:44,782 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 16:13:44,808 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 16:13:44,808 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 16:13:44,810 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 16:13:44,811 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 16:13:44,813 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 16:13:44,814 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 16:13:44,815 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 16:13:44,821 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 16:13:44,823 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 16:13:44,823 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 16:13:44,826 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 16:13:44,827 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 16:13:44,830 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 16:13:44,831 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 16:13:44,834 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 16:13:44,838 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 16:13:44,841 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 16:13:44,844 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 16:13:44,846 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 16:13:44,847 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 16:13:44,848 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 16:13:44,855 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 16:13:44,855 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 16:13:44,855 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 16:13:44,858 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 16:13:44,859 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 16:13:44,862 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 16:13:44,863 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 16:13:44,864 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 16:13:44,864 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 16:13:44,865 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 16:13:44,866 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 16:13:44,867 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 16:13:44,867 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 16:13:44,867 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 16:13:44,868 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 16:13:44,869 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 16:13:44,870 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 16:13:44,871 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 16:13:44,931 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 16:13:44,932 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 16:13:44,933 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 16:13:44,934 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 16:13:44,934 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 16:13:44,934 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 16:13:44,934 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 16:13:44,937 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 16:13:44,937 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 16:13:44,937 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 16:13:44,938 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 16:13:44,938 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 16:13:44,938 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 16:13:44,938 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 16:13:44,938 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 16:13:44,939 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 16:13:44,939 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 16:13:44,939 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 16:13:44,939 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 16:13:44,939 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 16:13:44,940 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 16:13:44,940 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 16:13:44,940 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 16:13:44,940 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 16:13:44,941 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 16:13:44,941 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 16:13:44,941 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 16:13:44,941 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 16:13:44,941 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 16:13:44,942 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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;log-additional-information=true; [2020-09-24 16:13:45,397 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 16:13:45,421 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 16:13:45,428 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 16:13:45,430 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 16:13:45,431 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 16:13:45,432 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-09-24 16:13:45,525 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c3f3d820b/e5d9e7f56b6140fa906427c33e5eb111/FLAG9007cb757 [2020-09-24 16:13:46,284 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 16:13:46,285 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-09-24 16:13:46,312 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c3f3d820b/e5d9e7f56b6140fa906427c33e5eb111/FLAG9007cb757 [2020-09-24 16:13:46,429 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c3f3d820b/e5d9e7f56b6140fa906427c33e5eb111 [2020-09-24 16:13:46,442 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 16:13:46,449 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 16:13:46,450 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 16:13:46,450 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 16:13:46,455 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 16:13:46,456 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:13:46" (1/1) ... [2020-09-24 16:13:46,461 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13d7d7c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:13:46, skipping insertion in model container [2020-09-24 16:13:46,461 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:13:46" (1/1) ... [2020-09-24 16:13:46,471 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 16:13:46,597 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 16:13:47,684 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 16:13:47,699 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 16:13:48,388 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 16:13:48,434 INFO L208 MainTranslator]: Completed translation [2020-09-24 16:13:48,435 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:13:48 WrapperNode [2020-09-24 16:13:48,436 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 16:13:48,437 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 16:13:48,437 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 16:13:48,437 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 16:13:48,464 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:13:48" (1/1) ... [2020-09-24 16:13:48,467 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:13:48" (1/1) ... [2020-09-24 16:13:48,531 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:13:48" (1/1) ... [2020-09-24 16:13:48,532 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:13:48" (1/1) ... [2020-09-24 16:13:48,623 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:13:48" (1/1) ... [2020-09-24 16:13:48,658 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:13:48" (1/1) ... [2020-09-24 16:13:48,673 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:13:48" (1/1) ... [2020-09-24 16:13:48,701 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 16:13:48,702 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 16:13:48,703 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 16:13:48,703 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 16:13:48,704 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:13:48" (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 16:13:48,823 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 16:13:48,824 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 16:13:48,824 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-24 16:13:48,825 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 16:13:48,825 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 16:13:48,825 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-24 16:13:48,826 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-09-24 16:13:48,826 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-09-24 16:13:48,827 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-09-24 16:13:48,828 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 16:13:48,828 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-24 16:13:48,828 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-09-24 16:13:48,829 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-09-24 16:13:48,829 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-09-24 16:13:48,829 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-09-24 16:13:48,830 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-09-24 16:13:48,831 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-09-24 16:13:48,832 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-09-24 16:13:48,832 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-09-24 16:13:48,833 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 16:13:48,834 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 16:13:48,834 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 16:13:52,148 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 16:13:52,149 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 16:13:52,163 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:13:52 BoogieIcfgContainer [2020-09-24 16:13:52,164 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 16:13:52,165 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 16:13:52,165 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 16:13:52,169 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 16:13:52,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 04:13:46" (1/3) ... [2020-09-24 16:13:52,170 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73c16e2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:13:52, skipping insertion in model container [2020-09-24 16:13:52,170 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:13:48" (2/3) ... [2020-09-24 16:13:52,171 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73c16e2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:13:52, skipping insertion in model container [2020-09-24 16:13:52,171 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:13:52" (3/3) ... [2020-09-24 16:13:52,175 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-09-24 16:13:52,187 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 16:13:52,200 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 16:13:52,224 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 16:13:52,263 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 16:13:52,263 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 16:13:52,263 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 16:13:52,264 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 16:13:52,264 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 16:13:52,264 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 16:13:52,264 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 16:13:52,264 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 16:13:52,319 INFO L276 IsEmpty]: Start isEmpty. Operand 1994 states. [2020-09-24 16:13:52,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 909 [2020-09-24 16:13:52,418 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:13:52,422 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:13:52,423 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:13:52,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:13:52,432 INFO L82 PathProgramCache]: Analyzing trace with hash -2948384, now seen corresponding path program 1 times [2020-09-24 16:13:52,444 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:13:52,445 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [188907003] [2020-09-24 16:13:52,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:13:53,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:13:53,413 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:13:53,414 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:13:53,415 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:13:53,415 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:13:53,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 915 [2020-09-24 16:13:53,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:13:53,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-24 16:13:53,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:13:53,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:13:53,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 378 [2020-09-24 16:13:53,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 500 [2020-09-24 16:13:53,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:13:55,167 WARN L193 SmtUtils]: Spent 546.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-09-24 16:13:55,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:13:55,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:13:55,187 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:13:55,187 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:13:55,187 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:13:55,188 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:13:55,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-09-24 16:13:55,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:13:55,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:13:55,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:13:55,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:13:55,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:13:55,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:13:55,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:13:55,865 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 16:13:55,866 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [188907003] [2020-09-24 16:13:55,868 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:13:55,869 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 16:13:55,869 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188781574] [2020-09-24 16:13:55,878 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 16:13:55,878 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:13:55,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 16:13:55,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 16:13:55,896 INFO L87 Difference]: Start difference. First operand 1994 states. Second operand 4 states. [2020-09-24 16:14:05,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:14:05,145 INFO L93 Difference]: Finished difference Result 3387 states and 4474 transitions. [2020-09-24 16:14:05,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 16:14:05,147 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 908 [2020-09-24 16:14:05,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:14:05,199 INFO L225 Difference]: With dead ends: 3387 [2020-09-24 16:14:05,200 INFO L226 Difference]: Without dead ends: 2783 [2020-09-24 16:14:05,209 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 16:14:05,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2783 states. [2020-09-24 16:14:05,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2783 to 2770. [2020-09-24 16:14:05,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2770 states. [2020-09-24 16:14:05,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2770 states to 2770 states and 3483 transitions. [2020-09-24 16:14:05,406 INFO L78 Accepts]: Start accepts. Automaton has 2770 states and 3483 transitions. Word has length 908 [2020-09-24 16:14:05,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:14:05,408 INFO L479 AbstractCegarLoop]: Abstraction has 2770 states and 3483 transitions. [2020-09-24 16:14:05,409 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 16:14:05,409 INFO L276 IsEmpty]: Start isEmpty. Operand 2770 states and 3483 transitions. [2020-09-24 16:14:05,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 909 [2020-09-24 16:14:05,455 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:14:05,456 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:14:05,457 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 16:14:05,457 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:14:05,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:14:05,458 INFO L82 PathProgramCache]: Analyzing trace with hash -4225536, now seen corresponding path program 1 times [2020-09-24 16:14:05,459 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:14:05,459 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1011680430] [2020-09-24 16:14:05,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:14:06,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:14:06,071 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:14:06,072 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:14:06,072 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:14:06,072 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:14:06,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 915 [2020-09-24 16:14:06,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:14:06,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 16:14:06,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:14:06,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 16:14:06,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 277 [2020-09-24 16:14:06,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-09-24 16:14:06,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:14:07,369 WARN L193 SmtUtils]: Spent 612.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-09-24 16:14:07,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:14:07,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:14:07,393 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:14:07,393 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:14:07,394 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:14:07,394 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:14:07,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-09-24 16:14:07,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:14:07,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:14:07,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:14:07,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:14:07,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:14:07,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:14:07,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 16:14:08,478 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 16:14:08,479 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1011680430] [2020-09-24 16:14:08,479 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:14:08,479 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 16:14:08,480 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435395568] [2020-09-24 16:14:08,483 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 16:14:08,483 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:14:08,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 16:14:08,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 16:14:08,484 INFO L87 Difference]: Start difference. First operand 2770 states and 3483 transitions. Second operand 5 states. [2020-09-24 16:14:20,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:14:20,860 INFO L93 Difference]: Finished difference Result 7628 states and 9724 transitions. [2020-09-24 16:14:20,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 16:14:20,861 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 908 [2020-09-24 16:14:20,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:14:20,887 INFO L225 Difference]: With dead ends: 7628 [2020-09-24 16:14:20,887 INFO L226 Difference]: Without dead ends: 5156 [2020-09-24 16:14:20,895 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 16:14:20,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5156 states. [2020-09-24 16:14:21,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5156 to 5154. [2020-09-24 16:14:21,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5154 states. [2020-09-24 16:14:21,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5154 states to 5154 states and 6526 transitions. [2020-09-24 16:14:21,088 INFO L78 Accepts]: Start accepts. Automaton has 5154 states and 6526 transitions. Word has length 908 [2020-09-24 16:14:21,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:14:21,090 INFO L479 AbstractCegarLoop]: Abstraction has 5154 states and 6526 transitions. [2020-09-24 16:14:21,090 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 16:14:21,090 INFO L276 IsEmpty]: Start isEmpty. Operand 5154 states and 6526 transitions. [2020-09-24 16:14:21,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 911 [2020-09-24 16:14:21,114 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:14:21,115 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:14:21,116 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 16:14:21,116 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:14:21,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:14:21,117 INFO L82 PathProgramCache]: Analyzing trace with hash 1009058211, now seen corresponding path program 1 times [2020-09-24 16:14:21,117 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:14:21,118 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [742662879] [2020-09-24 16:14:21,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:14:21,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:14:21,577 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:14:21,578 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:14:21,578 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:14:21,578 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:14:21,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 917 [2020-09-24 16:14:21,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:14:21,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 16:14:21,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:14:21,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:14:21,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 291 [2020-09-24 16:14:21,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-09-24 16:14:21,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:14:22,490 WARN L193 SmtUtils]: Spent 434.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-09-24 16:14:22,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:14:22,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:14:22,510 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:14:22,510 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:14:22,510 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:14:22,511 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:14:22,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-09-24 16:14:22,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:14:22,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:14:22,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:14:22,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:14:22,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:14:22,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:14:22,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:14:23,197 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 16:14:23,198 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [742662879] [2020-09-24 16:14:23,198 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:14:23,198 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 16:14:23,198 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038078495] [2020-09-24 16:14:23,200 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 16:14:23,200 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:14:23,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 16:14:23,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 16:14:23,201 INFO L87 Difference]: Start difference. First operand 5154 states and 6526 transitions. Second operand 4 states. [2020-09-24 16:14:37,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:14:37,234 INFO L93 Difference]: Finished difference Result 14484 states and 18439 transitions. [2020-09-24 16:14:37,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 16:14:37,235 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 910 [2020-09-24 16:14:37,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:14:37,277 INFO L225 Difference]: With dead ends: 14484 [2020-09-24 16:14:37,278 INFO L226 Difference]: Without dead ends: 9834 [2020-09-24 16:14:37,287 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 16:14:37,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9834 states. [2020-09-24 16:14:37,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9834 to 9832. [2020-09-24 16:14:37,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9832 states. [2020-09-24 16:14:37,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9832 states to 9832 states and 12481 transitions. [2020-09-24 16:14:37,531 INFO L78 Accepts]: Start accepts. Automaton has 9832 states and 12481 transitions. Word has length 910 [2020-09-24 16:14:37,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:14:37,532 INFO L479 AbstractCegarLoop]: Abstraction has 9832 states and 12481 transitions. [2020-09-24 16:14:37,532 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 16:14:37,532 INFO L276 IsEmpty]: Start isEmpty. Operand 9832 states and 12481 transitions. [2020-09-24 16:14:37,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 911 [2020-09-24 16:14:37,555 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:14:37,556 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:14:37,556 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 16:14:37,557 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:14:37,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:14:37,557 INFO L82 PathProgramCache]: Analyzing trace with hash 52623386, now seen corresponding path program 1 times [2020-09-24 16:14:37,557 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:14:37,559 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [332038222] [2020-09-24 16:14:37,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:14:37,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:14:37,702 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:14:37,703 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:14:37,703 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:14:37,703 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:14:37,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 917 [2020-09-24 16:14:37,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:14:37,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 16:14:37,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:14:37,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:14:37,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 290 [2020-09-24 16:14:37,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 16:14:37,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:14:38,453 WARN L193 SmtUtils]: Spent 490.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-09-24 16:14:38,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:14:38,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:14:38,468 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:14:38,469 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:14:38,469 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:14:38,469 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:14:38,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-09-24 16:14:38,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:14:38,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:14:38,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:14:38,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:14:38,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:14:38,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:14:38,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:14:39,145 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 16:14:39,145 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [332038222] [2020-09-24 16:14:39,145 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:14:39,146 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 16:14:39,146 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749415734] [2020-09-24 16:14:39,147 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 16:14:39,147 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:14:39,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 16:14:39,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 16:14:39,148 INFO L87 Difference]: Start difference. First operand 9832 states and 12481 transitions. Second operand 4 states.