/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.5 --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.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 14:51:04,683 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 14:51:04,688 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 14:51:04,732 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 14:51:04,732 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 14:51:04,743 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 14:51:04,746 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 14:51:04,750 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 14:51:04,753 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 14:51:04,757 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 14:51:04,758 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 14:51:04,759 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 14:51:04,759 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 14:51:04,763 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 14:51:04,766 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 14:51:04,768 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 14:51:04,770 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 14:51:04,771 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 14:51:04,773 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 14:51:04,783 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 14:51:04,786 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 14:51:04,787 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 14:51:04,788 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 14:51:04,789 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 14:51:04,792 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 14:51:04,792 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 14:51:04,793 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 14:51:04,796 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 14:51:04,797 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 14:51:04,801 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 14:51:04,801 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 14:51:04,802 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 14:51:04,803 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 14:51:04,804 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 14:51:04,805 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 14:51:04,806 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 14:51:04,809 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 14:51:04,809 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 14:51:04,809 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 14:51:04,810 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 14:51:04,812 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 14:51:04,813 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 [2020-09-25 14:51:04,863 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 14:51:04,863 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 14:51:04,866 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 14:51:04,866 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 14:51:04,866 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 14:51:04,867 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 14:51:04,867 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 14:51:04,867 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 14:51:04,867 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 14:51:04,868 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 14:51:04,869 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 14:51:04,869 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 14:51:04,869 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 14:51:04,870 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 14:51:04,870 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 14:51:04,870 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 14:51:04,870 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 14:51:04,871 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 14:51:04,871 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 14:51:04,871 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 14:51:04,871 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 14:51:04,871 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:51:04,872 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 14:51:04,872 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 14:51:04,872 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 14:51:04,872 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 14:51:04,873 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 14:51:04,873 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 14:51:04,873 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 14:51:04,873 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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; [2020-09-25 14:51:05,329 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 14:51:05,356 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 14:51:05,363 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 14:51:05,365 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 14:51:05,365 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 14:51:05,367 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-09-25 14:51:05,449 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/855ef9e61/0ddb11b7718a4ff1935fe723fcbd6d82/FLAG6d6201945 [2020-09-25 14:51:06,227 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 14:51:06,228 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-09-25 14:51:06,256 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/855ef9e61/0ddb11b7718a4ff1935fe723fcbd6d82/FLAG6d6201945 [2020-09-25 14:51:06,296 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/855ef9e61/0ddb11b7718a4ff1935fe723fcbd6d82 [2020-09-25 14:51:06,312 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 14:51:06,318 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 14:51:06,322 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 14:51:06,323 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 14:51:06,327 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 14:51:06,328 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:51:06" (1/1) ... [2020-09-25 14:51:06,333 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67f72d40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:51:06, skipping insertion in model container [2020-09-25 14:51:06,334 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:51:06" (1/1) ... [2020-09-25 14:51:06,344 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 14:51:06,511 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 14:51:08,076 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:51:08,099 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 14:51:09,132 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:51:09,166 INFO L208 MainTranslator]: Completed translation [2020-09-25 14:51:09,168 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:51:09 WrapperNode [2020-09-25 14:51:09,169 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 14:51:09,170 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 14:51:09,170 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 14:51:09,170 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 14:51:09,187 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:51:09" (1/1) ... [2020-09-25 14:51:09,187 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:51:09" (1/1) ... [2020-09-25 14:51:09,220 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:51:09" (1/1) ... [2020-09-25 14:51:09,220 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:51:09" (1/1) ... [2020-09-25 14:51:09,308 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:51:09" (1/1) ... [2020-09-25 14:51:09,360 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:51:09" (1/1) ... [2020-09-25 14:51:09,379 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:51:09" (1/1) ... [2020-09-25 14:51:09,401 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 14:51:09,402 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 14:51:09,402 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 14:51:09,402 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 14:51:09,404 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:51:09" (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 [2020-09-25 14:51:09,492 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 14:51:09,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 14:51:09,493 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 14:51:09,493 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 14:51:09,494 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 14:51:09,494 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-25 14:51:09,494 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-09-25 14:51:09,495 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-09-25 14:51:09,495 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-09-25 14:51:09,495 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 14:51:09,495 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 14:51:09,496 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-09-25 14:51:09,496 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-09-25 14:51:09,496 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-09-25 14:51:09,496 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-09-25 14:51:09,497 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-09-25 14:51:09,498 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-09-25 14:51:09,498 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-09-25 14:51:09,498 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-09-25 14:51:09,498 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 14:51:09,499 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 14:51:09,499 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 14:51:14,007 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 14:51:14,008 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 14:51:14,023 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:51:14 BoogieIcfgContainer [2020-09-25 14:51:14,023 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 14:51:14,024 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 14:51:14,025 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 14:51:14,028 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 14:51:14,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:51:06" (1/3) ... [2020-09-25 14:51:14,030 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ab55ff7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:51:14, skipping insertion in model container [2020-09-25 14:51:14,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:51:09" (2/3) ... [2020-09-25 14:51:14,030 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ab55ff7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:51:14, skipping insertion in model container [2020-09-25 14:51:14,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:51:14" (3/3) ... [2020-09-25 14:51:14,033 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-09-25 14:51:14,045 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 14:51:14,062 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 12 error locations. [2020-09-25 14:51:14,085 INFO L251 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2020-09-25 14:51:14,124 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 14:51:14,124 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 14:51:14,124 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 14:51:14,124 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 14:51:14,124 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 14:51:14,124 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 14:51:14,125 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 14:51:14,125 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 14:51:14,185 INFO L276 IsEmpty]: Start isEmpty. Operand 3048 states. [2020-09-25 14:51:14,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 939 [2020-09-25 14:51:14,267 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:51:14,269 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, 1] [2020-09-25 14:51:14,270 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]=== [2020-09-25 14:51:14,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:51:14,279 INFO L82 PathProgramCache]: Analyzing trace with hash 197216454, now seen corresponding path program 1 times [2020-09-25 14:51:14,290 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:51:14,291 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [236375157] [2020-09-25 14:51:14,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:51:15,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:51:16,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:51:16,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:51:17,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:51:18,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:51:18,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:51:19,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:51:19,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:51:20,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:51:20,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:51:20,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 945 [2020-09-25 14:51:20,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 14:51:20,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-09-25 14:51:20,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:51:20,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:51:20,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:51:20,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 403 [2020-09-25 14:51:20,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 478 [2020-09-25 14:51:20,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 14:51:22,211 WARN L193 SmtUtils]: Spent 770.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-09-25 14:51:22,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:51:22,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:51:22,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:51:22,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:51:22,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-09-25 14:51:22,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:51:22,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-09-25 14:51:22,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:51:22,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:51:22,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:51:22,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:51:22,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:51:22,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:51:23,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:51:23,718 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [236375157] [2020-09-25 14:51:23,720 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:51:23,721 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 14:51:23,722 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885608238] [2020-09-25 14:51:23,733 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 14:51:23,733 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:51:23,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 14:51:23,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 14:51:23,756 INFO L87 Difference]: Start difference. First operand 3048 states. Second operand 4 states. [2020-09-25 14:51:39,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:51:39,197 INFO L93 Difference]: Finished difference Result 4924 states and 6314 transitions. [2020-09-25 14:51:39,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 14:51:39,204 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 938 [2020-09-25 14:51:39,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:51:39,259 INFO L225 Difference]: With dead ends: 4924 [2020-09-25 14:51:39,260 INFO L226 Difference]: Without dead ends: 3691 [2020-09-25 14:51:39,274 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 14:51:39,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3691 states. [2020-09-25 14:51:39,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3691 to 3675. [2020-09-25 14:51:39,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3675 states. [2020-09-25 14:51:39,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3675 states to 3675 states and 4464 transitions. [2020-09-25 14:51:39,478 INFO L78 Accepts]: Start accepts. Automaton has 3675 states and 4464 transitions. Word has length 938 [2020-09-25 14:51:39,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:51:39,481 INFO L479 AbstractCegarLoop]: Abstraction has 3675 states and 4464 transitions. [2020-09-25 14:51:39,481 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 14:51:39,482 INFO L276 IsEmpty]: Start isEmpty. Operand 3675 states and 4464 transitions. [2020-09-25 14:51:39,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 939 [2020-09-25 14:51:39,523 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:51:39,524 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, 1] [2020-09-25 14:51:39,524 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 14:51:39,525 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]=== [2020-09-25 14:51:39,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:51:39,525 INFO L82 PathProgramCache]: Analyzing trace with hash -1318155209, now seen corresponding path program 1 times [2020-09-25 14:51:39,526 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:51:39,526 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1187983268] [2020-09-25 14:51:39,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:51:39,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:51:40,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:51:40,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:51:41,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:51:41,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:51:41,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:51:42,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:51:42,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:51:43,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:51:43,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:51:44,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:51:44,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:51:44,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 945 [2020-09-25 14:51:44,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 14:51:44,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5085 [2020-09-25 14:51:44,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:51:44,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:51:44,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 14:51:44,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 295 [2020-09-25 14:51:44,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 169 [2020-09-25 14:51:44,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-09-25 14:51:46,053 WARN L193 SmtUtils]: Spent 691.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-09-25 14:51:46,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:51:46,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:51:46,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:51:46,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:51:46,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-09-25 14:51:46,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:51:46,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-09-25 14:51:46,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:51:46,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:51:46,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:51:46,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:51:46,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:51:46,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:51:47,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:51:47,152 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1187983268] [2020-09-25 14:51:47,152 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:51:47,152 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 14:51:47,153 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108787236] [2020-09-25 14:51:47,160 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:51:47,161 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:51:47,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:51:47,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:51:47,161 INFO L87 Difference]: Start difference. First operand 3675 states and 4464 transitions. Second operand 5 states.