/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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.5.4.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 06:55:36,617 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 06:55:36,621 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 06:55:36,672 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 06:55:36,672 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 06:55:36,684 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 06:55:36,687 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 06:55:36,691 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 06:55:36,694 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 06:55:36,698 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 06:55:36,699 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 06:55:36,701 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 06:55:36,701 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 06:55:36,705 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 06:55:36,708 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 06:55:36,710 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 06:55:36,711 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 06:55:36,712 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 06:55:36,717 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 06:55:36,722 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 06:55:36,726 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 06:55:36,727 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 06:55:36,729 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 06:55:36,730 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 06:55:36,735 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 06:55:36,736 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 06:55:36,736 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 06:55:36,739 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 06:55:36,739 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 06:55:36,741 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 06:55:36,742 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 06:55:36,742 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 06:55:36,743 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 06:55:36,744 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 06:55:36,746 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 06:55:36,746 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 06:55:36,747 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 06:55:36,747 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 06:55:36,747 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 06:55:36,748 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 06:55:36,750 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 06:55:36,751 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 06:55:36,802 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 06:55:36,803 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 06:55:36,805 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 06:55:36,805 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 06:55:36,806 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 06:55:36,806 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 06:55:36,806 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 06:55:36,807 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 06:55:36,807 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 06:55:36,807 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 06:55:36,808 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 06:55:36,808 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 06:55:36,809 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 06:55:36,809 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 06:55:36,809 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 06:55:36,810 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 06:55:36,810 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 06:55:36,810 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 06:55:36,810 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 06:55:36,810 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 06:55:36,811 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 06:55:36,811 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:55:36,811 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 06:55:36,811 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 06:55:36,811 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 06:55:36,812 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 06:55:36,812 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 06:55:36,812 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 06:55:36,812 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 06:55:36,813 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=WIDESTAMONGSMALL;tolerance=0.6;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=WIDESTAMONGSMALL;tolerance=0.6;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=WIDESTAMONGSMALL;tolerance=0.6;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=WIDESTAMONGSMALL;tolerance=0.6;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=WIDESTAMONGSMALL;tolerance=0.6;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=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; [2020-09-25 06:55:37,262 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 06:55:37,290 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 06:55:37,294 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 06:55:37,296 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 06:55:37,296 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 06:55:37,297 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.5.4.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2020-09-25 06:55:37,385 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e5fd5d0af/edb2b833f341442aabf8b648f10f60b2/FLAGee93c86a8 [2020-09-25 06:55:38,232 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 06:55:38,233 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.5.4.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2020-09-25 06:55:38,271 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e5fd5d0af/edb2b833f341442aabf8b648f10f60b2/FLAGee93c86a8 [2020-09-25 06:55:38,773 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e5fd5d0af/edb2b833f341442aabf8b648f10f60b2 [2020-09-25 06:55:38,787 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 06:55:38,794 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 06:55:38,798 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 06:55:38,798 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 06:55:38,803 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 06:55:38,804 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:55:38" (1/1) ... [2020-09-25 06:55:38,810 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ae19699 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:55:38, skipping insertion in model container [2020-09-25 06:55:38,810 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:55:38" (1/1) ... [2020-09-25 06:55:38,821 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 06:55:39,088 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 06:55:41,612 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:55:41,635 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 06:55:43,295 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:55:43,339 INFO L208 MainTranslator]: Completed translation [2020-09-25 06:55:43,341 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:55:43 WrapperNode [2020-09-25 06:55:43,341 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 06:55:43,343 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 06:55:43,343 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 06:55:43,343 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 06:55:43,363 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:55:43" (1/1) ... [2020-09-25 06:55:43,364 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:55:43" (1/1) ... [2020-09-25 06:55:43,423 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:55:43" (1/1) ... [2020-09-25 06:55:43,424 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:55:43" (1/1) ... [2020-09-25 06:55:43,532 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:55:43" (1/1) ... [2020-09-25 06:55:43,596 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:55:43" (1/1) ... [2020-09-25 06:55:43,622 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:55:43" (1/1) ... [2020-09-25 06:55:43,656 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 06:55:43,657 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 06:55:43,657 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 06:55:43,657 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 06:55:43,658 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:55:43" (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 06:55:43,766 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 06:55:43,767 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 06:55:43,767 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 06:55:43,767 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 06:55:43,767 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 06:55:43,768 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-25 06:55:43,768 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-09-25 06:55:43,769 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-09-25 06:55:43,769 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 06:55:43,769 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 06:55:43,770 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-09-25 06:55:43,770 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-09-25 06:55:43,770 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-09-25 06:55:43,770 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-09-25 06:55:43,770 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-09-25 06:55:43,771 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-09-25 06:55:43,771 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-09-25 06:55:43,772 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-09-25 06:55:43,772 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-09-25 06:55:43,772 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 06:55:43,772 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 06:55:43,773 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 06:55:51,537 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 06:55:51,538 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 06:55:51,562 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:55:51 BoogieIcfgContainer [2020-09-25 06:55:51,562 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 06:55:51,564 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 06:55:51,565 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 06:55:51,569 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 06:55:51,570 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 06:55:38" (1/3) ... [2020-09-25 06:55:51,571 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5952734f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:55:51, skipping insertion in model container [2020-09-25 06:55:51,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:55:43" (2/3) ... [2020-09-25 06:55:51,572 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5952734f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:55:51, skipping insertion in model container [2020-09-25 06:55:51,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:55:51" (3/3) ... [2020-09-25 06:55:51,575 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.5.4.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2020-09-25 06:55:51,587 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 06:55:51,602 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-09-25 06:55:51,625 INFO L251 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-09-25 06:55:51,671 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 06:55:51,672 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 06:55:51,672 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 06:55:51,672 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 06:55:51,672 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 06:55:51,672 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 06:55:51,672 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 06:55:51,672 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 06:55:51,747 INFO L276 IsEmpty]: Start isEmpty. Operand 4734 states. [2020-09-25 06:55:51,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1212 [2020-09-25 06:55:51,858 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:55:51,861 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:55:51,862 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:55:51,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:55:51,878 INFO L82 PathProgramCache]: Analyzing trace with hash 1636216094, now seen corresponding path program 1 times [2020-09-25 06:55:51,890 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:55:51,891 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [568448783] [2020-09-25 06:55:51,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:55:53,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:55:53,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:55:54,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:55:55,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:55:56,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:55:57,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:55:58,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:55:58,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1218 [2020-09-25 06:55:58,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 06:55:58,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-09-25 06:55:58,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:55:58,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:55:58,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:55:58,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 678 [2020-09-25 06:55:58,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-25 06:55:58,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 06:56:00,241 WARN L193 SmtUtils]: Spent 833.00 ms on a formula simplification that was a NOOP. DAG size: 394 [2020-09-25 06:56:00,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:56:00,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:56:00,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:56:00,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:56:00,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-25 06:56:00,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:56:00,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-09-25 06:56:00,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:56:00,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:56:00,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:56:00,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:56:00,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:56:00,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:56:01,690 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 06:56:01,691 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [568448783] [2020-09-25 06:56:01,693 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:56:01,693 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 06:56:01,694 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177335183] [2020-09-25 06:56:01,703 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 06:56:01,703 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:56:01,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 06:56:01,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 06:56:01,723 INFO L87 Difference]: Start difference. First operand 4734 states. Second operand 4 states.