/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=HIGHLEXORDER --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.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 22:59:07,617 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 22:59:07,621 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 22:59:07,663 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 22:59:07,664 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 22:59:07,671 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 22:59:07,673 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 22:59:07,676 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 22:59:07,679 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 22:59:07,682 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 22:59:07,683 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 22:59:07,684 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 22:59:07,684 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 22:59:07,687 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 22:59:07,690 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 22:59:07,691 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 22:59:07,693 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 22:59:07,694 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 22:59:07,695 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 22:59:07,703 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 22:59:07,705 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 22:59:07,706 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 22:59:07,707 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 22:59:07,708 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 22:59:07,720 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 22:59:07,720 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 22:59:07,720 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 22:59:07,721 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 22:59:07,721 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 22:59:07,723 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 22:59:07,724 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 22:59:07,724 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 22:59:07,726 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 22:59:07,727 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 22:59:07,728 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 22:59:07,728 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 22:59:07,729 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 22:59:07,729 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 22:59:07,729 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 22:59:07,730 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 22:59:07,732 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 22:59:07,733 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 22:59:07,776 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 22:59:07,776 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 22:59:07,778 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 22:59:07,778 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 22:59:07,778 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 22:59:07,779 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 22:59:07,779 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 22:59:07,779 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 22:59:07,779 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 22:59:07,780 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 22:59:07,781 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 22:59:07,781 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 22:59:07,781 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 22:59:07,782 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 22:59:07,782 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 22:59:07,782 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 22:59:07,782 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 22:59:07,782 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 22:59:07,783 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 22:59:07,783 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 22:59:07,783 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 22:59:07,783 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 22:59:07,783 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 22:59:07,784 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 22:59:07,784 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 22:59:07,784 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 22:59:07,784 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 22:59:07,784 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 22:59:07,785 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 22:59:07,785 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=HIGHLEXORDER;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=HIGHLEXORDER;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=HIGHLEXORDER;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=HIGHLEXORDER;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=HIGHLEXORDER;log-additional-information=true; [2020-09-24 22:59:08,211 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 22:59:08,233 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 22:59:08,237 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 22:59:08,238 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 22:59:08,239 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 22:59:08,240 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-09-24 22:59:08,313 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/afcebb927/cdaf7929295f423ca7a9c9d83df75c1e/FLAG009d4c994 [2020-09-24 22:59:09,081 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 22:59:09,081 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-09-24 22:59:09,107 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/afcebb927/cdaf7929295f423ca7a9c9d83df75c1e/FLAG009d4c994 [2020-09-24 22:59:09,162 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/afcebb927/cdaf7929295f423ca7a9c9d83df75c1e [2020-09-24 22:59:09,177 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 22:59:09,184 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 22:59:09,186 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 22:59:09,186 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 22:59:09,190 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 22:59:09,191 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 10:59:09" (1/1) ... [2020-09-24 22:59:09,196 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2876d654 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:59:09, skipping insertion in model container [2020-09-24 22:59:09,196 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 10:59:09" (1/1) ... [2020-09-24 22:59:09,205 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 22:59:09,358 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 22:59:10,855 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 22:59:10,877 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 22:59:11,724 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 22:59:11,755 INFO L208 MainTranslator]: Completed translation [2020-09-24 22:59:11,755 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:59:11 WrapperNode [2020-09-24 22:59:11,756 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 22:59:11,756 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 22:59:11,757 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 22:59:11,757 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 22:59:11,770 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:59:11" (1/1) ... [2020-09-24 22:59:11,771 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:59:11" (1/1) ... [2020-09-24 22:59:11,816 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:59:11" (1/1) ... [2020-09-24 22:59:11,817 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:59:11" (1/1) ... [2020-09-24 22:59:11,879 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:59:11" (1/1) ... [2020-09-24 22:59:11,920 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:59:11" (1/1) ... [2020-09-24 22:59:11,935 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:59:11" (1/1) ... [2020-09-24 22:59:11,954 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 22:59:11,955 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 22:59:11,955 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 22:59:11,955 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 22:59:11,957 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:59:11" (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 22:59:12,056 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 22:59:12,056 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 22:59:12,056 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-24 22:59:12,057 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 22:59:12,057 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 22:59:12,057 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-24 22:59:12,057 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-09-24 22:59:12,057 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-09-24 22:59:12,058 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-09-24 22:59:12,058 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 22:59:12,059 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-24 22:59:12,059 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-09-24 22:59:12,059 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-09-24 22:59:12,059 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-09-24 22:59:12,059 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-09-24 22:59:12,060 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-09-24 22:59:12,061 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-09-24 22:59:12,061 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-09-24 22:59:12,061 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-09-24 22:59:12,061 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 22:59:12,061 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 22:59:12,062 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 22:59:16,220 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 22:59:16,221 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 22:59:16,237 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 10:59:16 BoogieIcfgContainer [2020-09-24 22:59:16,237 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 22:59:16,239 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 22:59:16,239 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 22:59:16,242 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 22:59:16,243 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 10:59:09" (1/3) ... [2020-09-24 22:59:16,244 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60529c04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 10:59:16, skipping insertion in model container [2020-09-24 22:59:16,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:59:11" (2/3) ... [2020-09-24 22:59:16,244 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60529c04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 10:59:16, skipping insertion in model container [2020-09-24 22:59:16,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 10:59:16" (3/3) ... [2020-09-24 22:59:16,247 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-09-24 22:59:16,258 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 22:59:16,269 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 12 error locations. [2020-09-24 22:59:16,290 INFO L251 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2020-09-24 22:59:16,331 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 22:59:16,331 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 22:59:16,332 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 22:59:16,332 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 22:59:16,332 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 22:59:16,332 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 22:59:16,332 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 22:59:16,332 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 22:59:16,390 INFO L276 IsEmpty]: Start isEmpty. Operand 3026 states. [2020-09-24 22:59:16,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 936 [2020-09-24 22:59:16,479 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:59:16,482 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, 1, 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 22:59:16,483 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:59:16,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:59:16,491 INFO L82 PathProgramCache]: Analyzing trace with hash -1117929472, now seen corresponding path program 1 times [2020-09-24 22:59:16,502 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:59:16,503 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1943586920] [2020-09-24 22:59:16,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:59:17,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:59:18,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:59:19,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:59:20,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:59:20,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:59:21,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:59:21,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:59:22,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:59:22,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:59:23,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:59:23,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 942 [2020-09-24 22:59:23,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 22:59:23,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5203 [2020-09-24 22:59:23,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:59:23,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 22:59:23,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 297 [2020-09-24 22:59:23,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 169 [2020-09-24 22:59:23,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-24 22:59:24,459 WARN L193 SmtUtils]: Spent 688.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-09-24 22:59:24,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:59:24,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:59:24,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:59:24,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:59:24,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-09-24 22:59:24,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:59:24,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-09-24 22:59:24,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:59:24,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:59:24,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:59:24,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:59:24,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:59:25,386 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 22:59:25,387 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1943586920] [2020-09-24 22:59:25,389 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:59:25,389 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 22:59:25,390 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579740074] [2020-09-24 22:59:25,397 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 22:59:25,398 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:59:25,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 22:59:25,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 22:59:25,415 INFO L87 Difference]: Start difference. First operand 3026 states. Second operand 5 states. [2020-09-24 22:59:48,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:59:48,082 INFO L93 Difference]: Finished difference Result 8281 states and 10617 transitions. [2020-09-24 22:59:48,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 22:59:48,085 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 935 [2020-09-24 22:59:48,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:59:48,146 INFO L225 Difference]: With dead ends: 8281 [2020-09-24 22:59:48,146 INFO L226 Difference]: Without dead ends: 5062 [2020-09-24 22:59:48,160 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 22:59:48,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5062 states. [2020-09-24 22:59:48,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5062 to 4606. [2020-09-24 22:59:48,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4606 states. [2020-09-24 22:59:48,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4606 states to 4606 states and 5595 transitions. [2020-09-24 22:59:48,452 INFO L78 Accepts]: Start accepts. Automaton has 4606 states and 5595 transitions. Word has length 935 [2020-09-24 22:59:48,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:59:48,457 INFO L479 AbstractCegarLoop]: Abstraction has 4606 states and 5595 transitions. [2020-09-24 22:59:48,457 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 22:59:48,458 INFO L276 IsEmpty]: Start isEmpty. Operand 4606 states and 5595 transitions. [2020-09-24 22:59:48,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 938 [2020-09-24 22:59:48,523 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:59:48,524 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, 1, 1, 1, 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 22:59:48,524 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 22:59:48,525 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:59:48,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:59:48,526 INFO L82 PathProgramCache]: Analyzing trace with hash -1202063235, now seen corresponding path program 1 times [2020-09-24 22:59:48,527 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:59:48,527 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1576863538] [2020-09-24 22:59:48,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:59:48,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:59:48,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:59:49,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:59:49,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:59:50,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:59:50,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:59:50,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:59:51,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:59:51,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:59:52,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:59:53,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:59:53,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:59:53,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 944 [2020-09-24 22:59:53,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-24 22:59:53,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5060 [2020-09-24 22:59:53,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:59:53,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:59:53,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 321 [2020-09-24 22:59:53,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-09-24 22:59:53,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 22:59:55,045 WARN L193 SmtUtils]: Spent 577.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-09-24 22:59:55,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:59:55,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:59:55,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:59:55,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:59:55,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-09-24 22:59:55,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:59:55,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-09-24 22:59:55,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:59:55,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:59:55,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:59:55,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:59:55,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 22:59:56,491 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 22:59:56,492 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1576863538] [2020-09-24 22:59:56,492 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:59:56,492 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 22:59:56,493 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670791412] [2020-09-24 22:59:56,497 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 22:59:56,497 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:59:56,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 22:59:56,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 22:59:56,498 INFO L87 Difference]: Start difference. First operand 4606 states and 5595 transitions. Second operand 4 states.