/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 SequenceOfStatements --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=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.4.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 04:16:58,918 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 04:16:58,920 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 04:16:58,947 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 04:16:58,947 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 04:16:58,948 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 04:16:58,950 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 04:16:58,951 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 04:16:58,953 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 04:16:58,954 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 04:16:58,954 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 04:16:58,956 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 04:16:58,956 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 04:16:58,957 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 04:16:58,958 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 04:16:58,959 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 04:16:58,959 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 04:16:58,960 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 04:16:58,962 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 04:16:58,964 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 04:16:58,965 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 04:16:58,966 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 04:16:58,967 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 04:16:58,968 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 04:16:58,970 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 04:16:58,971 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 04:16:58,971 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 04:16:58,972 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 04:16:58,972 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 04:16:58,973 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 04:16:58,973 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 04:16:58,974 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 04:16:58,975 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 04:16:58,975 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 04:16:58,976 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 04:16:58,976 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 04:16:58,977 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 04:16:58,977 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 04:16:58,977 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 04:16:58,978 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 04:16:58,979 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 04:16:58,980 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 [2020-10-15 04:16:59,015 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 04:16:59,015 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 04:16:59,016 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 04:16:59,017 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 04:16:59,017 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 04:16:59,017 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 04:16:59,017 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 04:16:59,017 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 04:16:59,018 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 04:16:59,018 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 04:16:59,018 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 04:16:59,018 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 04:16:59,018 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 04:16:59,019 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 04:16:59,019 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 04:16:59,019 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 04:16:59,019 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 04:16:59,019 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 04:16:59,020 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 04:16:59,020 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 04:16:59,020 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 04:16:59,020 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 04:16:59,020 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 04:16:59,021 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 04:16:59,021 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 04:16:59,021 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 04:16:59,021 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 04:16:59,021 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 04:16:59,022 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 04:16:59,022 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 -> SequenceOfStatements 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=0.2;log-additional-information=true;unknown-allowed=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=0.2;log-additional-information=true;unknown-allowed=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=0.2;log-additional-information=true;unknown-allowed=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=0.2;log-additional-information=true;unknown-allowed=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=0.2;log-additional-information=true;unknown-allowed=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=0.2;log-additional-information=true;unknown-allowed=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=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-15 04:16:59,326 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 04:16:59,337 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 04:16:59,340 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 04:16:59,342 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 04:16:59,342 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 04:16:59,343 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.4.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c [2020-10-15 04:16:59,398 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a82838b9e/1e08821ad0504462b9fe7f075ff6893f/FLAG7d0bdbf09 [2020-10-15 04:17:00,265 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 04:17:00,266 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.4.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c [2020-10-15 04:17:00,312 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a82838b9e/1e08821ad0504462b9fe7f075ff6893f/FLAG7d0bdbf09 [2020-10-15 04:17:00,728 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a82838b9e/1e08821ad0504462b9fe7f075ff6893f [2020-10-15 04:17:00,738 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 04:17:00,740 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 04:17:00,741 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 04:17:00,741 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 04:17:00,747 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 04:17:00,748 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:17:00" (1/1) ... [2020-10-15 04:17:00,751 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a5fe62a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:17:00, skipping insertion in model container [2020-10-15 04:17:00,751 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:17:00" (1/1) ... [2020-10-15 04:17:00,759 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 04:17:01,361 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 04:17:05,618 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 04:17:05,631 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 04:17:09,445 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 04:17:09,479 INFO L208 MainTranslator]: Completed translation [2020-10-15 04:17:09,480 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:17:09 WrapperNode [2020-10-15 04:17:09,480 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 04:17:09,481 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 04:17:09,481 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 04:17:09,481 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 04:17:09,497 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:17:09" (1/1) ... [2020-10-15 04:17:09,498 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:17:09" (1/1) ... [2020-10-15 04:17:09,578 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:17:09" (1/1) ... [2020-10-15 04:17:09,579 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:17:09" (1/1) ... [2020-10-15 04:17:09,825 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:17:09" (1/1) ... [2020-10-15 04:17:09,907 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:17:09" (1/1) ... [2020-10-15 04:17:09,971 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:17:09" (1/1) ... [2020-10-15 04:17:10,075 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 04:17:10,075 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 04:17:10,076 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 04:17:10,076 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 04:17:10,077 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:17:09" (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 [2020-10-15 04:17:10,148 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 04:17:10,148 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 04:17:10,148 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-15 04:17:10,149 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 04:17:10,149 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 04:17:10,149 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-15 04:17:10,149 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-15 04:17:10,150 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-15 04:17:10,150 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-15 04:17:10,151 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-15 04:17:10,151 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-15 04:17:10,151 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-15 04:17:10,151 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-15 04:17:10,151 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-15 04:17:10,152 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-15 04:17:10,152 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-15 04:17:10,153 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-15 04:17:10,153 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-15 04:17:10,153 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-15 04:17:10,154 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 04:17:10,154 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 04:17:10,154 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 04:17:25,425 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 04:17:25,426 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-15 04:17:25,457 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:17:25 BoogieIcfgContainer [2020-10-15 04:17:25,458 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 04:17:25,460 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 04:17:25,460 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 04:17:25,464 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 04:17:25,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 04:17:00" (1/3) ... [2020-10-15 04:17:25,465 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7761c87b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:17:25, skipping insertion in model container [2020-10-15 04:17:25,466 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:17:09" (2/3) ... [2020-10-15 04:17:25,467 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7761c87b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:17:25, skipping insertion in model container [2020-10-15 04:17:25,467 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:17:25" (3/3) ... [2020-10-15 04:17:25,470 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.5.4.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c [2020-10-15 04:17:25,483 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 04:17:25,500 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 04:17:25,517 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 04:17:25,571 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 04:17:25,571 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 04:17:25,571 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 04:17:25,571 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 04:17:25,572 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 04:17:25,572 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 04:17:25,572 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 04:17:25,572 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 04:17:25,679 INFO L276 IsEmpty]: Start isEmpty. Operand 6869 states. [2020-10-15 04:17:25,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 388 [2020-10-15 04:17:25,736 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:17:25,738 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] [2020-10-15 04:17:25,738 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:17:25,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:17:25,745 INFO L82 PathProgramCache]: Analyzing trace with hash -303635533, now seen corresponding path program 1 times [2020-10-15 04:17:25,755 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:17:25,755 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2081830607] [2020-10-15 04:17:25,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:17:26,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:17:27,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:27,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:27,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:28,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:28,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:29,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:29,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:30,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:30,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:31,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:31,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:17:31,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 393 [2020-10-15 04:17:31,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-15 04:17:31,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5084 [2020-10-15 04:17:31,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:17:31,812 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:17:31,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:17:31,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:17:31,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 192 [2020-10-15 04:17:31,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-15 04:17:33,954 WARN L193 SmtUtils]: Spent 1.67 s on a formula simplification that was a NOOP. DAG size: 493 [2020-10-15 04:17:33,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:17:33,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:17:33,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:34,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:17:34,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:17:34,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:17:34,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-15 04:17:34,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:17:34,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:17:34,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:17:34,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:17:34,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:17:34,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:17:34,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:17:34,458 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2081830607] [2020-10-15 04:17:34,460 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:17:34,460 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:17:34,461 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204005202] [2020-10-15 04:17:34,470 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:17:34,470 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:17:34,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:17:34,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:17:34,488 INFO L87 Difference]: Start difference. First operand 6869 states. Second operand 5 states. [2020-10-15 04:18:36,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:18:36,222 INFO L93 Difference]: Finished difference Result 20283 states and 35503 transitions. [2020-10-15 04:18:36,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 04:18:36,226 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 387 [2020-10-15 04:18:36,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:18:36,318 INFO L225 Difference]: With dead ends: 20283 [2020-10-15 04:18:36,318 INFO L226 Difference]: Without dead ends: 13481 [2020-10-15 04:18:36,342 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:18:36,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13481 states. [2020-10-15 04:18:36,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13481 to 13479. [2020-10-15 04:18:36,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13479 states. [2020-10-15 04:18:36,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13479 states to 13479 states and 22224 transitions. [2020-10-15 04:18:36,876 INFO L78 Accepts]: Start accepts. Automaton has 13479 states and 22224 transitions. Word has length 387 [2020-10-15 04:18:36,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:18:36,883 INFO L479 AbstractCegarLoop]: Abstraction has 13479 states and 22224 transitions. [2020-10-15 04:18:36,883 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:18:36,883 INFO L276 IsEmpty]: Start isEmpty. Operand 13479 states and 22224 transitions. [2020-10-15 04:18:36,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 388 [2020-10-15 04:18:36,921 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:18:36,922 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] [2020-10-15 04:18:36,922 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 04:18:36,923 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:18:36,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:18:36,924 INFO L82 PathProgramCache]: Analyzing trace with hash 172322132, now seen corresponding path program 1 times [2020-10-15 04:18:36,925 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:18:36,928 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1532499532] [2020-10-15 04:18:36,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:18:37,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:18:37,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:37,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:38,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:38,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:38,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:39,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:39,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:40,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:40,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:40,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:41,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:42,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:18:42,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 393 [2020-10-15 04:18:42,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-15 04:18:42,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5115 [2020-10-15 04:18:42,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:18:42,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:18:42,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:18:42,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:18:42,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 192 [2020-10-15 04:18:42,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 04:18:44,581 WARN L193 SmtUtils]: Spent 2.00 s on a formula simplification that was a NOOP. DAG size: 493 [2020-10-15 04:18:44,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:18:44,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:18:44,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:44,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:18:44,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:18:44,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:18:44,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-15 04:18:44,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:18:44,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:18:44,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:18:44,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:18:44,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:18:44,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:18:45,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:18:45,042 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1532499532] [2020-10-15 04:18:45,042 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:18:45,042 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:18:45,043 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337151759] [2020-10-15 04:18:45,045 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:18:45,045 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:18:45,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:18:45,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:18:45,046 INFO L87 Difference]: Start difference. First operand 13479 states and 22224 transitions. Second operand 5 states. [2020-10-15 04:19:49,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:19:49,714 INFO L93 Difference]: Finished difference Result 40319 states and 66469 transitions. [2020-10-15 04:19:49,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:19:49,714 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 387 [2020-10-15 04:19:49,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:19:49,803 INFO L225 Difference]: With dead ends: 40319 [2020-10-15 04:19:49,803 INFO L226 Difference]: Without dead ends: 26855 [2020-10-15 04:19:49,829 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:19:49,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26855 states. [2020-10-15 04:19:50,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26855 to 26853. [2020-10-15 04:19:50,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26853 states. [2020-10-15 04:19:50,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26853 states to 26853 states and 44205 transitions. [2020-10-15 04:19:50,688 INFO L78 Accepts]: Start accepts. Automaton has 26853 states and 44205 transitions. Word has length 387 [2020-10-15 04:19:50,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:19:50,689 INFO L479 AbstractCegarLoop]: Abstraction has 26853 states and 44205 transitions. [2020-10-15 04:19:50,689 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:19:50,689 INFO L276 IsEmpty]: Start isEmpty. Operand 26853 states and 44205 transitions. [2020-10-15 04:19:50,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2020-10-15 04:19:50,745 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:19:50,745 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] [2020-10-15 04:19:50,746 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 04:19:50,746 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:19:50,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:19:50,746 INFO L82 PathProgramCache]: Analyzing trace with hash 1096769471, now seen corresponding path program 1 times [2020-10-15 04:19:50,747 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:19:50,747 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [161415721] [2020-10-15 04:19:50,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:19:50,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:19:51,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:19:51,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:19:51,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:19:51,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:19:51,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:19:52,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:19:52,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:19:53,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:19:53,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:19:53,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:19:53,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:19:56,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:19:56,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 395 [2020-10-15 04:19:56,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-15 04:19:56,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5061 [2020-10-15 04:19:56,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:19:56,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:19:56,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:19:56,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-15 04:19:56,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 202 [2020-10-15 04:19:56,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:19:57,661 WARN L193 SmtUtils]: Spent 1.38 s on a formula simplification that was a NOOP. DAG size: 493 [2020-10-15 04:19:57,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:19:57,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:19:57,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:19:57,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:19:57,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:19:57,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:19:57,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-10-15 04:19:57,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:19:57,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:19:57,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:19:57,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:19:57,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:19:57,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:19:58,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:19:58,157 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [161415721] [2020-10-15 04:19:58,158 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:19:58,159 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:19:58,160 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215988723] [2020-10-15 04:19:58,160 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:19:58,161 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:19:58,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:19:58,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:19:58,162 INFO L87 Difference]: Start difference. First operand 26853 states and 44205 transitions. Second operand 4 states.