/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=1.0 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 09:14:33,672 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 09:14:33,676 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 09:14:33,703 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 09:14:33,703 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 09:14:33,705 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 09:14:33,706 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 09:14:33,708 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 09:14:33,710 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 09:14:33,711 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 09:14:33,712 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 09:14:33,714 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 09:14:33,714 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 09:14:33,716 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 09:14:33,717 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 09:14:33,718 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 09:14:33,719 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 09:14:33,721 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 09:14:33,723 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 09:14:33,725 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 09:14:33,727 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 09:14:33,728 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 09:14:33,730 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 09:14:33,731 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 09:14:33,734 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 09:14:33,734 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 09:14:33,734 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 09:14:33,735 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 09:14:33,736 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 09:14:33,737 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 09:14:33,737 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 09:14:33,738 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 09:14:33,739 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 09:14:33,740 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 09:14:33,742 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 09:14:33,742 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 09:14:33,743 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 09:14:33,743 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 09:14:33,743 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 09:14:33,744 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 09:14:33,745 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 09:14:33,746 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 09:14:33,801 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 09:14:33,802 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 09:14:33,803 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 09:14:33,803 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 09:14:33,803 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 09:14:33,804 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 09:14:33,805 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 09:14:33,805 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 09:14:33,805 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 09:14:33,805 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 09:14:33,805 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 09:14:33,805 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 09:14:33,806 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 09:14:33,806 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 09:14:33,806 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 09:14:33,806 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 09:14:33,806 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 09:14:33,808 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 09:14:33,809 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 09:14:33,809 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 09:14:33,809 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 09:14:33,809 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 09:14:33,809 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 09:14:33,810 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 09:14:33,810 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 09:14:33,810 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 09:14:33,810 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 09:14:33,811 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 09:14:33,811 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 09:14:33,811 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=1.0;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=1.0;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=1.0;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=1.0;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=1.0;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=1.0;log-additional-information=true; [2020-09-25 09:14:34,315 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 09:14:34,343 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 09:14:34,349 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 09:14:34,350 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 09:14:34,351 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 09:14:34,352 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-09-25 09:14:34,451 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8651025f4/4aae4872ecca4d45aad436eea72f261b/FLAG767a19918 [2020-09-25 09:14:35,256 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 09:14:35,257 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-09-25 09:14:35,283 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8651025f4/4aae4872ecca4d45aad436eea72f261b/FLAG767a19918 [2020-09-25 09:14:35,331 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8651025f4/4aae4872ecca4d45aad436eea72f261b [2020-09-25 09:14:35,346 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 09:14:35,352 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 09:14:35,354 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 09:14:35,355 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 09:14:35,359 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 09:14:35,360 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:14:35" (1/1) ... [2020-09-25 09:14:35,365 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@89e380 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:14:35, skipping insertion in model container [2020-09-25 09:14:35,365 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:14:35" (1/1) ... [2020-09-25 09:14:35,375 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 09:14:35,549 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 09:14:37,094 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:14:37,110 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 09:14:38,182 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:14:38,239 INFO L208 MainTranslator]: Completed translation [2020-09-25 09:14:38,241 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:14:38 WrapperNode [2020-09-25 09:14:38,242 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 09:14:38,243 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 09:14:38,243 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 09:14:38,243 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 09:14:38,268 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:14:38" (1/1) ... [2020-09-25 09:14:38,270 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:14:38" (1/1) ... [2020-09-25 09:14:38,347 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:14:38" (1/1) ... [2020-09-25 09:14:38,347 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:14:38" (1/1) ... [2020-09-25 09:14:38,453 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:14:38" (1/1) ... [2020-09-25 09:14:38,505 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:14:38" (1/1) ... [2020-09-25 09:14:38,524 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:14:38" (1/1) ... [2020-09-25 09:14:38,546 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 09:14:38,547 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 09:14:38,547 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 09:14:38,547 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 09:14:38,548 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:14:38" (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 09:14:38,651 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 09:14:38,652 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 09:14:38,652 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 09:14:38,652 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 09:14:38,653 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 09:14:38,653 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-25 09:14:38,653 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-09-25 09:14:38,654 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-09-25 09:14:38,654 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-09-25 09:14:38,654 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 09:14:38,655 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 09:14:38,655 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-09-25 09:14:38,655 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-09-25 09:14:38,655 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-09-25 09:14:38,655 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-09-25 09:14:38,657 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-09-25 09:14:38,658 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-09-25 09:14:38,658 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-09-25 09:14:38,658 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-09-25 09:14:38,659 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-09-25 09:14:38,659 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 09:14:38,659 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 09:14:38,660 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 09:14:44,757 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 09:14:44,758 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 09:14:44,780 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:14:44 BoogieIcfgContainer [2020-09-25 09:14:44,780 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 09:14:44,782 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 09:14:44,783 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 09:14:44,786 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 09:14:44,787 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 09:14:35" (1/3) ... [2020-09-25 09:14:44,789 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@278e03f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:14:44, skipping insertion in model container [2020-09-25 09:14:44,789 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:14:38" (2/3) ... [2020-09-25 09:14:44,789 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@278e03f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:14:44, skipping insertion in model container [2020-09-25 09:14:44,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:14:44" (3/3) ... [2020-09-25 09:14:44,793 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.5.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-09-25 09:14:44,805 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 09:14:44,818 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 09:14:44,841 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 09:14:44,903 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 09:14:44,903 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 09:14:44,904 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 09:14:44,904 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 09:14:44,904 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 09:14:44,904 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 09:14:44,904 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 09:14:44,904 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 09:14:44,969 INFO L276 IsEmpty]: Start isEmpty. Operand 3444 states. [2020-09-25 09:14:45,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1419 [2020-09-25 09:14:45,084 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:14:45,087 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:14:45,087 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:14:45,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:14:45,097 INFO L82 PathProgramCache]: Analyzing trace with hash 542613819, now seen corresponding path program 1 times [2020-09-25 09:14:45,107 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:14:45,108 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1911881337] [2020-09-25 09:14:45,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:14:47,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:14:49,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:14:51,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:14:52,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:14:53,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:14:53,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1425 [2020-09-25 09:14:53,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 09:14:53,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5357 [2020-09-25 09:14:53,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:14:53,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:14:53,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 09:14:53,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 437 [2020-09-25 09:14:53,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 315 [2020-09-25 09:14:53,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 09:14:56,732 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification that was a NOOP. DAG size: 397 [2020-09-25 09:14:56,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:14:56,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:14:56,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:14:56,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:14:56,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-09-25 09:14:56,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:14:56,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-09-25 09:14:56,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:14:56,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:14:56,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:14:56,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:14:56,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:14:56,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:14:58,680 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 09:14:58,681 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1911881337] [2020-09-25 09:14:58,684 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:14:58,684 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 09:14:58,686 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197578031] [2020-09-25 09:14:58,700 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 09:14:58,701 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:14:58,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 09:14:58,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:14:58,722 INFO L87 Difference]: Start difference. First operand 3444 states. Second operand 5 states. [2020-09-25 09:15:30,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:15:30,554 INFO L93 Difference]: Finished difference Result 9329 states and 12759 transitions. [2020-09-25 09:15:30,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 09:15:30,557 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1418 [2020-09-25 09:15:30,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:15:30,616 INFO L225 Difference]: With dead ends: 9329 [2020-09-25 09:15:30,616 INFO L226 Difference]: Without dead ends: 5915 [2020-09-25 09:15:30,631 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 09:15:30,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5915 states. [2020-09-25 09:15:30,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5915 to 5913. [2020-09-25 09:15:30,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5913 states. [2020-09-25 09:15:30,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5913 states to 5913 states and 7747 transitions. [2020-09-25 09:15:30,920 INFO L78 Accepts]: Start accepts. Automaton has 5913 states and 7747 transitions. Word has length 1418 [2020-09-25 09:15:30,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:15:30,923 INFO L479 AbstractCegarLoop]: Abstraction has 5913 states and 7747 transitions. [2020-09-25 09:15:30,923 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 09:15:30,924 INFO L276 IsEmpty]: Start isEmpty. Operand 5913 states and 7747 transitions. [2020-09-25 09:15:31,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1421 [2020-09-25 09:15:31,152 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:15:31,153 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:15:31,154 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 09:15:31,154 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:15:31,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:15:31,155 INFO L82 PathProgramCache]: Analyzing trace with hash 124334270, now seen corresponding path program 1 times [2020-09-25 09:15:31,156 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:15:31,156 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1445790845] [2020-09-25 09:15:31,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:15:31,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat