/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_floodmax.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 09:13:01,644 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 09:13:01,649 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 09:13:01,698 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 09:13:01,698 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 09:13:01,707 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 09:13:01,710 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 09:13:01,714 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 09:13:01,717 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 09:13:01,721 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 09:13:01,722 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 09:13:01,723 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 09:13:01,723 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 09:13:01,727 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 09:13:01,730 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 09:13:01,732 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 09:13:01,733 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 09:13:01,735 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 09:13:01,736 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 09:13:01,747 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 09:13:01,749 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 09:13:01,753 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 09:13:01,754 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 09:13:01,754 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 09:13:01,757 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 09:13:01,757 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 09:13:01,757 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 09:13:01,758 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 09:13:01,759 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 09:13:01,760 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 09:13:01,760 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 09:13:01,761 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 09:13:01,762 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 09:13:01,762 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 09:13:01,763 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 09:13:01,764 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 09:13:01,764 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 09:13:01,765 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 09:13:01,765 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 09:13:01,766 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 09:13:01,767 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 09:13:01,768 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 09:13:01,794 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 09:13:01,794 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 09:13:01,796 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 09:13:01,796 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 09:13:01,796 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 09:13:01,796 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 09:13:01,797 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 09:13:01,797 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 09:13:01,797 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 09:13:01,797 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 09:13:01,797 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 09:13:01,798 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 09:13:01,798 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 09:13:01,798 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 09:13:01,798 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 09:13:01,798 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 09:13:01,799 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 09:13:01,799 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 09:13:01,799 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 09:13:01,799 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 09:13:01,799 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 09:13:01,800 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 09:13:01,800 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 09:13:01,800 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 09:13:01,800 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 09:13:01,801 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 09:13:01,801 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 09:13:01,801 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 09:13:01,801 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 09:13:01,801 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 09:13:02,261 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 09:13:02,281 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 09:13:02,286 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 09:13:02,288 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 09:13:02,290 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 09:13:02,291 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-09-25 09:13:02,383 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/afeb92c36/76fe6b5a4e144a82ae1e41241393e22a/FLAG7abc2f6f5 [2020-09-25 09:13:03,120 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 09:13:03,121 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-09-25 09:13:03,141 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/afeb92c36/76fe6b5a4e144a82ae1e41241393e22a/FLAG7abc2f6f5 [2020-09-25 09:13:03,295 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/afeb92c36/76fe6b5a4e144a82ae1e41241393e22a [2020-09-25 09:13:03,308 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 09:13:03,314 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 09:13:03,315 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 09:13:03,316 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 09:13:03,323 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 09:13:03,326 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:13:03" (1/1) ... [2020-09-25 09:13:03,330 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@625d319a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:13:03, skipping insertion in model container [2020-09-25 09:13:03,330 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:13:03" (1/1) ... [2020-09-25 09:13:03,341 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 09:13:03,441 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 09:13:04,186 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:13:04,221 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 09:13:04,641 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:13:04,663 INFO L208 MainTranslator]: Completed translation [2020-09-25 09:13:04,664 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:13:04 WrapperNode [2020-09-25 09:13:04,664 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 09:13:04,665 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 09:13:04,665 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 09:13:04,665 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 09:13:04,680 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:13:04" (1/1) ... [2020-09-25 09:13:04,680 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:13:04" (1/1) ... [2020-09-25 09:13:04,701 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:13:04" (1/1) ... [2020-09-25 09:13:04,701 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:13:04" (1/1) ... [2020-09-25 09:13:04,738 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:13:04" (1/1) ... [2020-09-25 09:13:04,779 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:13:04" (1/1) ... [2020-09-25 09:13:04,791 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:13:04" (1/1) ... [2020-09-25 09:13:04,809 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 09:13:04,810 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 09:13:04,810 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 09:13:04,810 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 09:13:04,813 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:13:04" (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 09:13:04,904 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 09:13:04,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 09:13:04,905 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 09:13:04,905 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 09:13:04,906 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 09:13:04,907 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-25 09:13:04,907 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-09-25 09:13:04,908 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-09-25 09:13:04,908 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-09-25 09:13:04,909 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 09:13:04,909 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 09:13:04,909 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-09-25 09:13:04,909 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-09-25 09:13:04,909 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-09-25 09:13:04,910 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-09-25 09:13:04,911 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-09-25 09:13:04,911 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-09-25 09:13:04,911 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-09-25 09:13:04,911 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 09:13:04,912 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 09:13:04,912 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 09:13:07,116 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 09:13:07,117 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 09:13:07,136 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:13:07 BoogieIcfgContainer [2020-09-25 09:13:07,137 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 09:13:07,139 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 09:13:07,141 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 09:13:07,145 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 09:13:07,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 09:13:03" (1/3) ... [2020-09-25 09:13:07,146 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45fc016a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:13:07, skipping insertion in model container [2020-09-25 09:13:07,147 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:13:04" (2/3) ... [2020-09-25 09:13:07,148 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45fc016a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:13:07, skipping insertion in model container [2020-09-25 09:13:07,148 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:13:07" (3/3) ... [2020-09-25 09:13:07,152 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-09-25 09:13:07,164 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 09:13:07,176 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-09-25 09:13:07,198 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-09-25 09:13:07,232 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 09:13:07,232 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 09:13:07,232 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 09:13:07,232 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 09:13:07,232 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 09:13:07,232 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 09:13:07,233 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 09:13:07,233 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 09:13:07,276 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states. [2020-09-25 09:13:07,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2020-09-25 09:13:07,313 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:13:07,315 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] [2020-09-25 09:13:07,315 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:13:07,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:13:07,324 INFO L82 PathProgramCache]: Analyzing trace with hash -1272027086, now seen corresponding path program 1 times [2020-09-25 09:13:07,335 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:13:07,335 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [757898469] [2020-09-25 09:13:07,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:13:07,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:13:08,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:13:08,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:13:08,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:13:09,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:13:09,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:13:09,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:13:09,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:13:10,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:13:12,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:13:12,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 421 [2020-09-25 09:13:12,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 09:13:12,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-09-25 09:13:12,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:13:12,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:13:12,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:13:12,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 199 [2020-09-25 09:13:12,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 188 [2020-09-25 09:13:12,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 09:13:13,489 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-25 09:13:13,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:13:13,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:13:13,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:13:13,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:13:13,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 09:13:13,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:13:13,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-09-25 09:13:13,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:13:13,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:13:13,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:13:13,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:13:13,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:13:13,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:13:13,855 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 09:13:13,856 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [757898469] [2020-09-25 09:13:13,858 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:13:13,858 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 09:13:13,859 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282794256] [2020-09-25 09:13:13,867 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 09:13:13,867 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:13:13,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 09:13:13,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 09:13:13,890 INFO L87 Difference]: Start difference. First operand 1123 states. Second operand 4 states. [2020-09-25 09:13:18,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:13:18,405 INFO L93 Difference]: Finished difference Result 1830 states and 2374 transitions. [2020-09-25 09:13:18,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 09:13:18,407 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 414 [2020-09-25 09:13:18,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:13:18,440 INFO L225 Difference]: With dead ends: 1830 [2020-09-25 09:13:18,440 INFO L226 Difference]: Without dead ends: 1312 [2020-09-25 09:13:18,449 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 09:13:18,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1312 states. [2020-09-25 09:13:18,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1312 to 1303. [2020-09-25 09:13:18,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1303 states. [2020-09-25 09:13:18,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1303 states to 1303 states and 1563 transitions. [2020-09-25 09:13:18,573 INFO L78 Accepts]: Start accepts. Automaton has 1303 states and 1563 transitions. Word has length 414 [2020-09-25 09:13:18,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:13:18,575 INFO L479 AbstractCegarLoop]: Abstraction has 1303 states and 1563 transitions. [2020-09-25 09:13:18,575 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 09:13:18,576 INFO L276 IsEmpty]: Start isEmpty. Operand 1303 states and 1563 transitions. [2020-09-25 09:13:18,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2020-09-25 09:13:18,586 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:13:18,587 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] [2020-09-25 09:13:18,587 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 09:13:18,587 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:13:18,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:13:18,588 INFO L82 PathProgramCache]: Analyzing trace with hash -1791071559, now seen corresponding path program 1 times [2020-09-25 09:13:18,588 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:13:18,589 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2083908301] [2020-09-25 09:13:18,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:13:18,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:13:18,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:13:19,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:13:19,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:13:19,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:13:19,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:13:19,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:13:20,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:13:20,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:13:23,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:13:23,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 421 [2020-09-25 09:13:23,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 09:13:23,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5061 [2020-09-25 09:13:23,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:13:23,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:13:23,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 09:13:23,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 165 [2020-09-25 09:13:23,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-09-25 09:13:23,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 11 [2020-09-25 09:13:24,510 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-25 09:13:24,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:13:24,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:13:24,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:13:24,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:13:24,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 09:13:24,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:13:24,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-09-25 09:13:24,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:13:24,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:13:24,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:13:24,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:13:24,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:13:24,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:13:24,892 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 09:13:24,893 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2083908301] [2020-09-25 09:13:24,893 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:13:24,894 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 09:13:24,894 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059807297] [2020-09-25 09:13:24,898 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 09:13:24,898 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:13:24,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 09:13:24,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:13:24,899 INFO L87 Difference]: Start difference. First operand 1303 states and 1563 transitions. Second operand 5 states. [2020-09-25 09:13:32,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:13:32,081 INFO L93 Difference]: Finished difference Result 3464 states and 4203 transitions. [2020-09-25 09:13:32,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 09:13:32,083 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 414 [2020-09-25 09:13:32,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:13:32,096 INFO L225 Difference]: With dead ends: 3464 [2020-09-25 09:13:32,097 INFO L226 Difference]: Without dead ends: 2371 [2020-09-25 09:13:32,103 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 09:13:32,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2371 states. [2020-09-25 09:13:32,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2371 to 2246. [2020-09-25 09:13:32,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2246 states. [2020-09-25 09:13:32,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2246 states to 2246 states and 2730 transitions. [2020-09-25 09:13:32,197 INFO L78 Accepts]: Start accepts. Automaton has 2246 states and 2730 transitions. Word has length 414 [2020-09-25 09:13:32,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:13:32,198 INFO L479 AbstractCegarLoop]: Abstraction has 2246 states and 2730 transitions. [2020-09-25 09:13:32,198 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 09:13:32,198 INFO L276 IsEmpty]: Start isEmpty. Operand 2246 states and 2730 transitions. [2020-09-25 09:13:32,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2020-09-25 09:13:32,205 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:13:32,205 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] [2020-09-25 09:13:32,206 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 09:13:32,206 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:13:32,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:13:32,207 INFO L82 PathProgramCache]: Analyzing trace with hash -1512250717, now seen corresponding path program 1 times [2020-09-25 09:13:32,207 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:13:32,207 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [822793920] [2020-09-25 09:13:32,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:13:32,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:13:32,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:13:32,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:13:32,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:13:32,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:13:33,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:13:33,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:13:34,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:13:36,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:13:36,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:13:37,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:13:37,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 422 [2020-09-25 09:13:37,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 09:13:37,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5056 [2020-09-25 09:13:37,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:13:37,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:13:37,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 09:13:37,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 168 [2020-09-25 09:13:37,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-09-25 09:13:37,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:13:37,738 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-25 09:13:37,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:13:37,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:13:37,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:13:37,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:13:37,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 09:13:37,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:13:37,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-25 09:13:37,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:13:37,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:13:37,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:13:37,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:13:37,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:13:37,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:13:38,109 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 09:13:38,109 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [822793920] [2020-09-25 09:13:38,109 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:13:38,110 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 09:13:38,110 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544625708] [2020-09-25 09:13:38,111 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 09:13:38,111 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:13:38,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 09:13:38,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:13:38,112 INFO L87 Difference]: Start difference. First operand 2246 states and 2730 transitions. Second operand 5 states. [2020-09-25 09:13:44,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:13:44,192 INFO L93 Difference]: Finished difference Result 6208 states and 7594 transitions. [2020-09-25 09:13:44,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 09:13:44,193 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 415 [2020-09-25 09:13:44,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:13:44,215 INFO L225 Difference]: With dead ends: 6208 [2020-09-25 09:13:44,215 INFO L226 Difference]: Without dead ends: 4164 [2020-09-25 09:13:44,222 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 09:13:44,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4164 states. [2020-09-25 09:13:44,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4164 to 4056. [2020-09-25 09:13:44,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4056 states. [2020-09-25 09:13:44,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4056 states to 4056 states and 4949 transitions. [2020-09-25 09:13:44,391 INFO L78 Accepts]: Start accepts. Automaton has 4056 states and 4949 transitions. Word has length 415 [2020-09-25 09:13:44,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:13:44,393 INFO L479 AbstractCegarLoop]: Abstraction has 4056 states and 4949 transitions. [2020-09-25 09:13:44,397 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 09:13:44,397 INFO L276 IsEmpty]: Start isEmpty. Operand 4056 states and 4949 transitions. [2020-09-25 09:13:44,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 417 [2020-09-25 09:13:44,406 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:13:44,406 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] [2020-09-25 09:13:44,407 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 09:13:44,413 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:13:44,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:13:44,414 INFO L82 PathProgramCache]: Analyzing trace with hash 1711630169, now seen corresponding path program 1 times [2020-09-25 09:13:44,415 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:13:44,415 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1935661193] [2020-09-25 09:13:44,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:13:44,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:13:44,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:13:44,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:13:44,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:13:44,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:13:45,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:13:45,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:13:46,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:13:46,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:13:49,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:13:49,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 423 [2020-09-25 09:13:49,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 09:13:49,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-09-25 09:13:49,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:13:49,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:13:49,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 09:13:49,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 170 [2020-09-25 09:13:49,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-09-25 09:13:49,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 09:13:50,002 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-25 09:13:50,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:13:50,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:13:50,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:13:50,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:13:50,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 09:13:50,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:13:50,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-09-25 09:13:50,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:13:50,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:13:50,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:13:50,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:13:50,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:13:50,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1