/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=0.1 --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_floodmax.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 10:19:57,090 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 10:19:57,093 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 10:19:57,119 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 10:19:57,119 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 10:19:57,120 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 10:19:57,122 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 10:19:57,123 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 10:19:57,125 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 10:19:57,126 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 10:19:57,127 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 10:19:57,128 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 10:19:57,129 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 10:19:57,130 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 10:19:57,132 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 10:19:57,134 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 10:19:57,135 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 10:19:57,136 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 10:19:57,137 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 10:19:57,139 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 10:19:57,141 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 10:19:57,142 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 10:19:57,144 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 10:19:57,144 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 10:19:57,147 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 10:19:57,147 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 10:19:57,148 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 10:19:57,149 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 10:19:57,149 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 10:19:57,150 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 10:19:57,150 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 10:19:57,151 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 10:19:57,152 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 10:19:57,153 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 10:19:57,154 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 10:19:57,154 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 10:19:57,155 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 10:19:57,155 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 10:19:57,155 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 10:19:57,156 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 10:19:57,157 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 10:19:57,158 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 10:19:57,185 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 10:19:57,186 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 10:19:57,187 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 10:19:57,187 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 10:19:57,187 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 10:19:57,188 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 10:19:57,188 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 10:19:57,188 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 10:19:57,188 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 10:19:57,189 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 10:19:57,189 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 10:19:57,189 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 10:19:57,189 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 10:19:57,189 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 10:19:57,190 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 10:19:57,190 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 10:19:57,190 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 10:19:57,190 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 10:19:57,190 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 10:19:57,190 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 10:19:57,191 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 10:19:57,191 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:19:57,191 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 10:19:57,191 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 10:19:57,192 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 10:19:57,192 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 10:19:57,192 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 10:19:57,192 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 10:19:57,192 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 10:19:57,193 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=0.1;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=0.1;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=0.1;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=0.1;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=0.1;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=0.1;log-additional-information=true; [2020-09-25 10:19:57,661 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 10:19:57,679 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 10:19:57,684 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 10:19:57,686 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 10:19:57,686 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 10:19:57,687 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-09-25 10:19:57,770 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3a4d82e82/150c287cff344274b8c5e2d339e0dc2d/FLAG0c977c3d8 [2020-09-25 10:19:58,408 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 10:19:58,409 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-09-25 10:19:58,431 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3a4d82e82/150c287cff344274b8c5e2d339e0dc2d/FLAG0c977c3d8 [2020-09-25 10:19:58,688 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3a4d82e82/150c287cff344274b8c5e2d339e0dc2d [2020-09-25 10:19:58,701 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 10:19:58,708 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 10:19:58,709 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 10:19:58,709 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 10:19:58,715 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 10:19:58,717 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:19:58" (1/1) ... [2020-09-25 10:19:58,722 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6470404c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:19:58, skipping insertion in model container [2020-09-25 10:19:58,722 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:19:58" (1/1) ... [2020-09-25 10:19:58,732 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 10:19:58,824 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 10:19:59,450 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:19:59,465 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 10:19:59,634 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:19:59,659 INFO L208 MainTranslator]: Completed translation [2020-09-25 10:19:59,659 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:19:59 WrapperNode [2020-09-25 10:19:59,659 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 10:19:59,660 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 10:19:59,661 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 10:19:59,661 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 10:19:59,676 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:19:59" (1/1) ... [2020-09-25 10:19:59,676 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:19:59" (1/1) ... [2020-09-25 10:19:59,697 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:19:59" (1/1) ... [2020-09-25 10:19:59,698 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:19:59" (1/1) ... [2020-09-25 10:19:59,725 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:19:59" (1/1) ... [2020-09-25 10:19:59,747 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:19:59" (1/1) ... [2020-09-25 10:19:59,752 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:19:59" (1/1) ... [2020-09-25 10:19:59,760 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 10:19:59,761 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 10:19:59,761 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 10:19:59,761 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 10:19:59,763 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:19:59" (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 10:19:59,861 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 10:19:59,861 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 10:19:59,862 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 10:19:59,862 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 10:19:59,862 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 10:19:59,862 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-25 10:19:59,863 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-09-25 10:19:59,863 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-09-25 10:19:59,863 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-09-25 10:19:59,863 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 10:19:59,863 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 10:19:59,864 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-09-25 10:19:59,864 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-09-25 10:19:59,864 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-09-25 10:19:59,864 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-09-25 10:19:59,865 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-09-25 10:19:59,865 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-09-25 10:19:59,865 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-09-25 10:19:59,865 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 10:19:59,866 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 10:19:59,866 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 10:20:01,649 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 10:20:01,649 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 10:20:01,668 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:20:01 BoogieIcfgContainer [2020-09-25 10:20:01,668 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 10:20:01,672 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 10:20:01,673 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 10:20:01,677 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 10:20:01,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:19:58" (1/3) ... [2020-09-25 10:20:01,678 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b4e822e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:20:01, skipping insertion in model container [2020-09-25 10:20:01,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:19:59" (2/3) ... [2020-09-25 10:20:01,679 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b4e822e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:20:01, skipping insertion in model container [2020-09-25 10:20:01,680 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:20:01" (3/3) ... [2020-09-25 10:20:01,682 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-09-25 10:20:01,694 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 10:20:01,713 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 10:20:01,738 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 10:20:01,784 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 10:20:01,784 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 10:20:01,784 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 10:20:01,785 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 10:20:01,785 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 10:20:01,785 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 10:20:01,785 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 10:20:01,785 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 10:20:01,832 INFO L276 IsEmpty]: Start isEmpty. Operand 813 states. [2020-09-25 10:20:01,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2020-09-25 10:20:01,863 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:20:01,865 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] [2020-09-25 10:20:01,865 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:20:01,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:20:01,874 INFO L82 PathProgramCache]: Analyzing trace with hash -361300248, now seen corresponding path program 1 times [2020-09-25 10:20:01,885 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:20:01,886 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1512129935] [2020-09-25 10:20:01,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:20:02,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:20:02,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:20:03,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:20:03,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:20:03,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:20:03,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:20:03,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:20:04,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:20:06,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:20:07,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:20:07,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:20:07,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 414 [2020-09-25 10:20:07,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 10:20:07,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-09-25 10:20:07,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:20:07,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:20:07,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 10:20:07,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-09-25 10:20:07,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-09-25 10:20:07,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-09-25 10:20:08,144 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-09-25 10:20:08,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:20:08,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:20:08,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:20:08,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:20:08,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-25 10:20:08,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:20:08,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-25 10:20:08,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:20:08,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:20:08,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:20:08,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:20:08,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:20:08,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:20:08,529 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 10:20:08,530 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1512129935] [2020-09-25 10:20:08,532 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:20:08,532 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 10:20:08,533 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947839132] [2020-09-25 10:20:08,541 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 10:20:08,541 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:20:08,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 10:20:08,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 10:20:08,562 INFO L87 Difference]: Start difference. First operand 813 states. Second operand 5 states. [2020-09-25 10:20:14,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:20:14,033 INFO L93 Difference]: Finished difference Result 2068 states and 2752 transitions. [2020-09-25 10:20:14,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 10:20:14,035 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 407 [2020-09-25 10:20:14,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:20:14,065 INFO L225 Difference]: With dead ends: 2068 [2020-09-25 10:20:14,065 INFO L226 Difference]: Without dead ends: 1234 [2020-09-25 10:20:14,076 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 10:20:14,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1234 states. [2020-09-25 10:20:14,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1234 to 1232. [2020-09-25 10:20:14,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1232 states. [2020-09-25 10:20:14,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1232 states to 1232 states and 1499 transitions. [2020-09-25 10:20:14,222 INFO L78 Accepts]: Start accepts. Automaton has 1232 states and 1499 transitions. Word has length 407 [2020-09-25 10:20:14,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:20:14,227 INFO L479 AbstractCegarLoop]: Abstraction has 1232 states and 1499 transitions. [2020-09-25 10:20:14,227 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 10:20:14,227 INFO L276 IsEmpty]: Start isEmpty. Operand 1232 states and 1499 transitions. [2020-09-25 10:20:14,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2020-09-25 10:20:14,243 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:20:14,244 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] [2020-09-25 10:20:14,244 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 10:20:14,245 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:20:14,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:20:14,245 INFO L82 PathProgramCache]: Analyzing trace with hash -1185743993, now seen corresponding path program 1 times [2020-09-25 10:20:14,247 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:20:14,247 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1733297588] [2020-09-25 10:20:14,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:20:14,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:20:14,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:20:14,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:20:14,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:20:14,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:20:15,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:20:15,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:20:15,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:20:17,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:20:18,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:20:19,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:20:19,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 415 [2020-09-25 10:20:19,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 10:20:19,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-09-25 10:20:19,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:20:19,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:20:19,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 10:20:19,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 162 [2020-09-25 10:20:19,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-09-25 10:20:19,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 11 [2020-09-25 10:20:19,880 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-09-25 10:20:19,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:20:19,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:20:19,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:20:19,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:20:19,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-25 10:20:19,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:20:19,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-25 10:20:19,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:20:19,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:20:19,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:20:19,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:20:19,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:20:19,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:20:20,364 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 10:20:20,365 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1733297588] [2020-09-25 10:20:20,365 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:20:20,365 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 10:20:20,365 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134429014] [2020-09-25 10:20:20,370 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 10:20:20,370 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:20:20,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 10:20:20,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 10:20:20,371 INFO L87 Difference]: Start difference. First operand 1232 states and 1499 transitions. Second operand 5 states. [2020-09-25 10:20:25,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:20:25,080 INFO L93 Difference]: Finished difference Result 3044 states and 3757 transitions. [2020-09-25 10:20:25,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 10:20:25,081 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 408 [2020-09-25 10:20:25,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:20:25,098 INFO L225 Difference]: With dead ends: 3044 [2020-09-25 10:20:25,098 INFO L226 Difference]: Without dead ends: 2206 [2020-09-25 10:20:25,103 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 10:20:25,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2206 states. [2020-09-25 10:20:25,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2206 to 2204. [2020-09-25 10:20:25,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2204 states. [2020-09-25 10:20:25,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2204 states to 2204 states and 2695 transitions. [2020-09-25 10:20:25,243 INFO L78 Accepts]: Start accepts. Automaton has 2204 states and 2695 transitions. Word has length 408 [2020-09-25 10:20:25,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:20:25,246 INFO L479 AbstractCegarLoop]: Abstraction has 2204 states and 2695 transitions. [2020-09-25 10:20:25,246 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 10:20:25,246 INFO L276 IsEmpty]: Start isEmpty. Operand 2204 states and 2695 transitions. [2020-09-25 10:20:25,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2020-09-25 10:20:25,256 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:20:25,256 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] [2020-09-25 10:20:25,257 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 10:20:25,257 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:20:25,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:20:25,257 INFO L82 PathProgramCache]: Analyzing trace with hash -494780894, now seen corresponding path program 1 times [2020-09-25 10:20:25,258 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:20:25,258 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [809663975] [2020-09-25 10:20:25,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:20:25,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:20:25,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:20:25,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:20:25,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:20:25,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:20:25,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:20:26,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:20:27,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:20:27,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:20:30,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:20:30,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 416 [2020-09-25 10:20:30,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 10:20:30,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 10:20:30,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:20:30,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:20:30,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 10:20:30,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 163 [2020-09-25 10:20:30,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-09-25 10:20:30,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:20:30,785 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-09-25 10:20:30,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:20:30,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:20:30,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:20:30,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:20:30,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-25 10:20:30,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:20:30,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-09-25 10:20:30,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:20:30,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:20:30,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:20:30,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:20:30,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:20:30,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:20:31,135 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 10:20:31,136 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [809663975] [2020-09-25 10:20:31,137 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:20:31,137 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 10:20:31,137 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914503931] [2020-09-25 10:20:31,138 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 10:20:31,138 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:20:31,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 10:20:31,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 10:20:31,139 INFO L87 Difference]: Start difference. First operand 2204 states and 2695 transitions. Second operand 5 states. [2020-09-25 10:20:35,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:20:35,968 INFO L93 Difference]: Finished difference Result 5668 states and 6978 transitions. [2020-09-25 10:20:35,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 10:20:35,969 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 409 [2020-09-25 10:20:35,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:20:35,990 INFO L225 Difference]: With dead ends: 5668 [2020-09-25 10:20:35,990 INFO L226 Difference]: Without dead ends: 4070 [2020-09-25 10:20:35,995 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 10:20:36,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4070 states. [2020-09-25 10:20:36,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4070 to 4068. [2020-09-25 10:20:36,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4068 states. [2020-09-25 10:20:36,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4068 states to 4068 states and 4968 transitions. [2020-09-25 10:20:36,205 INFO L78 Accepts]: Start accepts. Automaton has 4068 states and 4968 transitions. Word has length 409 [2020-09-25 10:20:36,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:20:36,213 INFO L479 AbstractCegarLoop]: Abstraction has 4068 states and 4968 transitions. [2020-09-25 10:20:36,213 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 10:20:36,213 INFO L276 IsEmpty]: Start isEmpty. Operand 4068 states and 4968 transitions. [2020-09-25 10:20:36,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2020-09-25 10:20:36,227 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:20:36,227 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] [2020-09-25 10:20:36,228 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 10:20:36,228 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:20:36,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:20:36,229 INFO L82 PathProgramCache]: Analyzing trace with hash -233352987, now seen corresponding path program 1 times [2020-09-25 10:20:36,231 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:20:36,231 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [81052046] [2020-09-25 10:20:36,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:20:36,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:20:36,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:20:36,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:20:36,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:20:36,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:20:36,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:20:37,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:20:38,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:20:41,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:20:41,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:20:41,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 417 [2020-09-25 10:20:41,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 10:20:41,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-09-25 10:20:41,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:20:41,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:20:41,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 10:20:41,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 161 [2020-09-25 10:20:41,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 169 [2020-09-25 10:20:41,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:20:41,864 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-09-25 10:20:41,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:20:41,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:20:41,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:20:41,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:20:41,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-25 10:20:41,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:20:41,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-25 10:20:41,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:20:41,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:20:41,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:20:41,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:20:41,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:20:41,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:20:42,206 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 10:20:42,206 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [81052046] [2020-09-25 10:20:42,206 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:20:42,207 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 10:20:42,207 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577056741] [2020-09-25 10:20:42,208 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 10:20:42,208 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:20:42,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 10:20:42,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 10:20:42,209 INFO L87 Difference]: Start difference. First operand 4068 states and 4968 transitions. Second operand 5 states.