/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+sep-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 14:48:00,703 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 14:48:00,706 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 14:48:00,730 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 14:48:00,730 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 14:48:00,732 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 14:48:00,733 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 14:48:00,735 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 14:48:00,737 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 14:48:00,738 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 14:48:00,739 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 14:48:00,740 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 14:48:00,740 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 14:48:00,741 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 14:48:00,742 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 14:48:00,743 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 14:48:00,744 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 14:48:00,745 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 14:48:00,747 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 14:48:00,749 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 14:48:00,750 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 14:48:00,751 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 14:48:00,753 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 14:48:00,757 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 14:48:00,762 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 14:48:00,763 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 14:48:00,763 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 14:48:00,764 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 14:48:00,764 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 14:48:00,765 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 14:48:00,766 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 14:48:00,766 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 14:48:00,767 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 14:48:00,768 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 14:48:00,769 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 14:48:00,769 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 14:48:00,770 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 14:48:00,770 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 14:48:00,770 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 14:48:00,772 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 14:48:00,773 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 14:48:00,774 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 14:48:00,798 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 14:48:00,798 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 14:48:00,799 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 14:48:00,800 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 14:48:00,800 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 14:48:00,800 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 14:48:00,800 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 14:48:00,801 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 14:48:00,801 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 14:48:00,801 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 14:48:00,801 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 14:48:00,801 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 14:48:00,802 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 14:48:00,802 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 14:48:00,802 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 14:48:00,802 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 14:48:00,802 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 14:48:00,803 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 14:48:00,803 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 14:48:00,803 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 14:48:00,803 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 14:48:00,803 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 14:48:00,804 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 14:48:00,804 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 14:48:00,804 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 14:48:00,804 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 14:48:00,804 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 14:48:00,804 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 14:48:00,805 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 14:48:00,805 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 14:48:01,136 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 14:48:01,157 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 14:48:01,163 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 14:48:01,166 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 14:48:01,171 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 14:48:01,172 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+sep-reducer.c [2020-10-13 14:48:01,255 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/76f4b752e/ca858cb8824445f08b197e84e2f5f863/FLAG7b6d15628 [2020-10-13 14:48:02,223 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 14:48:02,224 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+sep-reducer.c [2020-10-13 14:48:02,305 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/76f4b752e/ca858cb8824445f08b197e84e2f5f863/FLAG7b6d15628 [2020-10-13 14:48:02,509 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/76f4b752e/ca858cb8824445f08b197e84e2f5f863 [2020-10-13 14:48:02,520 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 14:48:02,523 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 14:48:02,524 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 14:48:02,525 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 14:48:02,528 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 14:48:02,529 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 02:48:02" (1/1) ... [2020-10-13 14:48:02,533 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15e98a99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:48:02, skipping insertion in model container [2020-10-13 14:48:02,534 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 02:48:02" (1/1) ... [2020-10-13 14:48:02,543 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 14:48:03,026 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 14:48:06,533 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 14:48:06,550 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 14:48:08,509 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 14:48:08,566 INFO L208 MainTranslator]: Completed translation [2020-10-13 14:48:08,567 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:48:08 WrapperNode [2020-10-13 14:48:08,567 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 14:48:08,568 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 14:48:08,568 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 14:48:08,568 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 14:48:08,592 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:48:08" (1/1) ... [2020-10-13 14:48:08,595 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:48:08" (1/1) ... [2020-10-13 14:48:08,798 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:48:08" (1/1) ... [2020-10-13 14:48:08,800 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:48:08" (1/1) ... [2020-10-13 14:48:09,036 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:48:08" (1/1) ... [2020-10-13 14:48:09,142 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:48:08" (1/1) ... [2020-10-13 14:48:09,243 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:48:08" (1/1) ... [2020-10-13 14:48:09,338 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 14:48:09,339 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 14:48:09,339 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 14:48:09,339 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 14:48:09,341 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:48:08" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 14:48:09,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 14:48:09,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 14:48:09,421 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-13 14:48:09,422 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 14:48:09,422 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 14:48:09,422 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-13 14:48:09,422 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-13 14:48:09,422 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-13 14:48:09,423 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 14:48:09,423 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-13 14:48:09,423 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-13 14:48:09,423 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-13 14:48:09,423 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-13 14:48:09,424 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-13 14:48:09,424 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-13 14:48:09,424 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-13 14:48:09,424 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-13 14:48:09,424 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-13 14:48:09,425 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-13 14:48:09,425 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 14:48:09,425 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 14:48:09,425 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 14:48:23,052 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 14:48:23,052 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-13 14:48:23,078 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 02:48:23 BoogieIcfgContainer [2020-10-13 14:48:23,078 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 14:48:23,079 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 14:48:23,079 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 14:48:23,083 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 14:48:23,083 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 02:48:02" (1/3) ... [2020-10-13 14:48:23,084 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58d54ae7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 02:48:23, skipping insertion in model container [2020-10-13 14:48:23,084 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:48:08" (2/3) ... [2020-10-13 14:48:23,084 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58d54ae7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 02:48:23, skipping insertion in model container [2020-10-13 14:48:23,085 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 02:48:23" (3/3) ... [2020-10-13 14:48:23,086 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+sep-reducer.c [2020-10-13 14:48:23,097 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 14:48:23,108 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 19 error locations. [2020-10-13 14:48:23,123 INFO L251 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2020-10-13 14:48:23,169 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 14:48:23,169 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 14:48:23,169 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 14:48:23,170 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 14:48:23,170 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 14:48:23,170 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 14:48:23,170 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 14:48:23,170 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 14:48:23,351 INFO L276 IsEmpty]: Start isEmpty. Operand 6351 states. [2020-10-13 14:48:23,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-13 14:48:23,411 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:48:23,413 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] [2020-10-13 14:48:23,413 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr18ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:48:23,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:48:23,420 INFO L82 PathProgramCache]: Analyzing trace with hash 840809464, now seen corresponding path program 1 times [2020-10-13 14:48:23,431 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:48:23,431 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [641291359] [2020-10-13 14:48:23,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:48:24,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:48:24,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:48:25,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:48:29,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:48:29,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 14:48:29,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 14:48:29,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5067 [2020-10-13 14:48:29,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:48:29,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 14:48:29,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 14:48:29,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-13 14:48:29,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-13 14:48:41,946 WARN L193 SmtUtils]: Spent 11.80 s on a formula simplification that was a NOOP. DAG size: 1777 [2020-10-13 14:48:41,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:48:42,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:48:42,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:48:42,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:48:42,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:48:42,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:48:42,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 249 [2020-10-13 14:48:42,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:48:42,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:48:42,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:48:42,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 14:48:42,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:48:42,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:48:42,536 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [641291359] [2020-10-13 14:48:42,539 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:48:42,539 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:48:42,541 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444434303] [2020-10-13 14:48:42,549 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 14:48:42,549 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:48:42,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 14:48:42,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:48:42,576 INFO L87 Difference]: Start difference. First operand 6351 states. Second operand 6 states. [2020-10-13 14:48:54,562 WARN L193 SmtUtils]: Spent 11.51 s on a formula simplification that was a NOOP. DAG size: 1786 [2020-10-13 14:50:46,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:50:46,792 INFO L93 Difference]: Finished difference Result 9436 states and 16436 transitions. [2020-10-13 14:50:46,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 14:50:46,795 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 82 [2020-10-13 14:50:46,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:50:46,847 INFO L225 Difference]: With dead ends: 9436 [2020-10-13 14:50:46,847 INFO L226 Difference]: Without dead ends: 6007 [2020-10-13 14:50:46,861 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 23.6s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-13 14:50:46,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6007 states. [2020-10-13 14:50:47,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6007 to 5974. [2020-10-13 14:50:47,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5974 states. [2020-10-13 14:50:47,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5974 states to 5974 states and 7706 transitions. [2020-10-13 14:50:47,199 INFO L78 Accepts]: Start accepts. Automaton has 5974 states and 7706 transitions. Word has length 82 [2020-10-13 14:50:47,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:50:47,201 INFO L479 AbstractCegarLoop]: Abstraction has 5974 states and 7706 transitions. [2020-10-13 14:50:47,202 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 14:50:47,202 INFO L276 IsEmpty]: Start isEmpty. Operand 5974 states and 7706 transitions. [2020-10-13 14:50:47,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-13 14:50:47,229 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:50:47,229 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] [2020-10-13 14:50:47,230 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 14:50:47,230 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr18ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:50:47,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:50:47,231 INFO L82 PathProgramCache]: Analyzing trace with hash 842610855, now seen corresponding path program 1 times [2020-10-13 14:50:47,232 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:50:47,232 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [89576755] [2020-10-13 14:50:47,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:50:47,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:50:47,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:50:47,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:50:48,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:50:51,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:50:52,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:50:52,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-13 14:50:52,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 14:50:52,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5077 [2020-10-13 14:50:52,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:50:52,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:50:52,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-13 14:50:52,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-13 14:50:52,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:51:04,346 WARN L193 SmtUtils]: Spent 11.41 s on a formula simplification that was a NOOP. DAG size: 1777 [2020-10-13 14:51:04,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:51:04,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:51:04,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:51:04,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:51:04,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:51:04,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:51:04,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-13 14:51:04,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:51:04,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:51:04,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:51:04,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:51:04,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:51:04,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:51:04,585 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [89576755] [2020-10-13 14:51:04,585 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:51:04,585 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:51:04,585 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466898635] [2020-10-13 14:51:04,588 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:51:04,589 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:51:04,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:51:04,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:51:04,589 INFO L87 Difference]: Start difference. First operand 5974 states and 7706 transitions. Second operand 7 states. [2020-10-13 14:51:16,306 WARN L193 SmtUtils]: Spent 11.43 s on a formula simplification that was a NOOP. DAG size: 1781