/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_opt-floodmax.5.4.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 15:11:35,312 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 15:11:35,316 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 15:11:35,355 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 15:11:35,356 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 15:11:35,364 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 15:11:35,366 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 15:11:35,369 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 15:11:35,372 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 15:11:35,376 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 15:11:35,376 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 15:11:35,377 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 15:11:35,378 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 15:11:35,381 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 15:11:35,383 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 15:11:35,385 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 15:11:35,387 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 15:11:35,389 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 15:11:35,390 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 15:11:35,400 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 15:11:35,402 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 15:11:35,403 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 15:11:35,404 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 15:11:35,405 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 15:11:35,417 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 15:11:35,417 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 15:11:35,417 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 15:11:35,419 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 15:11:35,419 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 15:11:35,422 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 15:11:35,422 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 15:11:35,424 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 15:11:35,425 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 15:11:35,426 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 15:11:35,426 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 15:11:35,427 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 15:11:35,427 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 15:11:35,427 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 15:11:35,428 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 15:11:35,430 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 15:11:35,432 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 15:11:35,433 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 15:11:35,472 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 15:11:35,472 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 15:11:35,474 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 15:11:35,475 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 15:11:35,475 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 15:11:35,475 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 15:11:35,475 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 15:11:35,476 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 15:11:35,476 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 15:11:35,476 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 15:11:35,477 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 15:11:35,477 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 15:11:35,478 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 15:11:35,478 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 15:11:35,478 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 15:11:35,478 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 15:11:35,479 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 15:11:35,479 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 15:11:35,479 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 15:11:35,479 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 15:11:35,479 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 15:11:35,480 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 15:11:35,480 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 15:11:35,480 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 15:11:35,480 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 15:11:35,480 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 15:11:35,481 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 15:11:35,481 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 15:11:35,481 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 15:11:35,481 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 15:11:35,764 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 15:11:35,776 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 15:11:35,780 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 15:11:35,781 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 15:11:35,782 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 15:11:35,783 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.4.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c [2020-10-13 15:11:35,856 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e6d965643/c3dd1b4469174c52b6e21db2bf64e746/FLAG17bb49bb5 [2020-10-13 15:11:36,803 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 15:11:36,804 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.4.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c [2020-10-13 15:11:36,857 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e6d965643/c3dd1b4469174c52b6e21db2bf64e746/FLAG17bb49bb5 [2020-10-13 15:11:37,207 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e6d965643/c3dd1b4469174c52b6e21db2bf64e746 [2020-10-13 15:11:37,217 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 15:11:37,221 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 15:11:37,226 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 15:11:37,226 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 15:11:37,230 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 15:11:37,231 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 03:11:37" (1/1) ... [2020-10-13 15:11:37,235 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@beaab2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:11:37, skipping insertion in model container [2020-10-13 15:11:37,236 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 03:11:37" (1/1) ... [2020-10-13 15:11:37,245 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 15:11:37,809 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 15:11:42,626 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 15:11:42,638 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 15:11:46,146 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 15:11:46,178 INFO L208 MainTranslator]: Completed translation [2020-10-13 15:11:46,179 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:11:46 WrapperNode [2020-10-13 15:11:46,179 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 15:11:46,180 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 15:11:46,180 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 15:11:46,180 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 15:11:46,195 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:11:46" (1/1) ... [2020-10-13 15:11:46,196 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:11:46" (1/1) ... [2020-10-13 15:11:46,272 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:11:46" (1/1) ... [2020-10-13 15:11:46,273 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:11:46" (1/1) ... [2020-10-13 15:11:46,495 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:11:46" (1/1) ... [2020-10-13 15:11:46,588 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:11:46" (1/1) ... [2020-10-13 15:11:46,641 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:11:46" (1/1) ... [2020-10-13 15:11:46,707 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 15:11:46,708 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 15:11:46,708 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 15:11:46,708 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 15:11:46,709 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:11:46" (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 15:11:46,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 15:11:46,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 15:11:46,778 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-13 15:11:46,778 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 15:11:46,778 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 15:11:46,779 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-13 15:11:46,779 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-13 15:11:46,779 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-13 15:11:46,779 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 15:11:46,779 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-13 15:11:46,780 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-13 15:11:46,780 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-13 15:11:46,780 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-13 15:11:46,780 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-13 15:11:46,780 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-13 15:11:46,781 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-13 15:11:46,781 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-13 15:11:46,781 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-13 15:11:46,782 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-13 15:11:46,782 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 15:11:46,782 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 15:11:46,782 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 15:12:00,826 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 15:12:00,827 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-13 15:12:00,851 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 03:12:00 BoogieIcfgContainer [2020-10-13 15:12:00,851 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 15:12:00,853 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 15:12:00,853 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 15:12:00,856 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 15:12:00,857 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 03:11:37" (1/3) ... [2020-10-13 15:12:00,858 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f95e8b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 03:12:00, skipping insertion in model container [2020-10-13 15:12:00,858 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:11:46" (2/3) ... [2020-10-13 15:12:00,858 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f95e8b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 03:12:00, skipping insertion in model container [2020-10-13 15:12:00,859 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 03:12:00" (3/3) ... [2020-10-13 15:12:00,861 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.5.4.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c [2020-10-13 15:12:00,872 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 15:12:00,882 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 15:12:00,896 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 15:12:00,942 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 15:12:00,942 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 15:12:00,943 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 15:12:00,943 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 15:12:00,943 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 15:12:00,943 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 15:12:00,943 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 15:12:00,943 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 15:12:01,051 INFO L276 IsEmpty]: Start isEmpty. Operand 6869 states. [2020-10-13 15:12:01,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 388 [2020-10-13 15:12:01,098 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:12:01,100 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] [2020-10-13 15:12:01,100 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:12:01,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:12:01,107 INFO L82 PathProgramCache]: Analyzing trace with hash -303635533, now seen corresponding path program 1 times [2020-10-13 15:12:01,116 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:12:01,117 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1090769578] [2020-10-13 15:12:01,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:12:01,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:12:02,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:02,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:03,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:03,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:04,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:04,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:05,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:06,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:06,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:07,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:12:07,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 393 [2020-10-13 15:12:07,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 15:12:07,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5049 [2020-10-13 15:12:07,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:12:07,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:12:07,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 187 [2020-10-13 15:12:07,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 15:12:07,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 15:12:08,646 WARN L193 SmtUtils]: Spent 1.23 s on a formula simplification that was a NOOP. DAG size: 493 [2020-10-13 15:12:08,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:12:08,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:12:08,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:08,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:12:08,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:12:08,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:12:08,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 15:12:08,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:12:08,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:12:08,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:12:08,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:12:08,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:12:08,955 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 15:12:08,956 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1090769578] [2020-10-13 15:12:08,958 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:12:08,959 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 15:12:08,960 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979838555] [2020-10-13 15:12:08,970 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 15:12:08,970 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:12:08,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 15:12:08,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:12:08,990 INFO L87 Difference]: Start difference. First operand 6869 states. Second operand 4 states. [2020-10-13 15:12:10,436 WARN L193 SmtUtils]: Spent 1.33 s on a formula simplification that was a NOOP. DAG size: 497 [2020-10-13 15:13:14,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:13:14,322 INFO L93 Difference]: Finished difference Result 13721 states and 23785 transitions. [2020-10-13 15:13:14,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:13:14,327 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 387 [2020-10-13 15:13:14,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:13:14,398 INFO L225 Difference]: With dead ends: 13721 [2020-10-13 15:13:14,398 INFO L226 Difference]: Without dead ends: 8187 [2020-10-13 15:13:14,418 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:13:14,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8187 states. [2020-10-13 15:13:14,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8187 to 8185. [2020-10-13 15:13:14,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8185 states. [2020-10-13 15:13:14,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8185 states to 8185 states and 13711 transitions. [2020-10-13 15:13:14,786 INFO L78 Accepts]: Start accepts. Automaton has 8185 states and 13711 transitions. Word has length 387 [2020-10-13 15:13:14,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:13:14,788 INFO L479 AbstractCegarLoop]: Abstraction has 8185 states and 13711 transitions. [2020-10-13 15:13:14,788 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 15:13:14,788 INFO L276 IsEmpty]: Start isEmpty. Operand 8185 states and 13711 transitions. [2020-10-13 15:13:14,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 388 [2020-10-13 15:13:14,809 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:13:14,810 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] [2020-10-13 15:13:14,811 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 15:13:14,811 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:13:14,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:13:14,812 INFO L82 PathProgramCache]: Analyzing trace with hash 745584830, now seen corresponding path program 1 times [2020-10-13 15:13:14,813 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:13:14,813 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [163539511] [2020-10-13 15:13:14,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:13:15,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:13:15,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:13:15,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:13:16,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:13:16,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:13:16,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:13:17,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:13:17,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:13:18,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:13:18,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:13:19,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:13:20,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:13:20,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 393 [2020-10-13 15:13:20,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-13 15:13:20,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-13 15:13:20,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:13:20,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:13:20,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 189 [2020-10-13 15:13:20,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 15:13:20,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-13 15:13:21,603 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification that was a NOOP. DAG size: 493 [2020-10-13 15:13:21,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:13:21,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:13:21,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:13:21,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:13:21,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:13:21,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:13:21,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-13 15:13:21,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:13:21,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:13:21,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:13:21,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:13:21,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:13:21,853 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 15:13:21,854 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [163539511] [2020-10-13 15:13:21,854 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:13:21,855 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 15:13:21,855 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429645808] [2020-10-13 15:13:21,858 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 15:13:21,858 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:13:21,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 15:13:21,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:13:21,859 INFO L87 Difference]: Start difference. First operand 8185 states and 13711 transitions. Second operand 4 states. [2020-10-13 15:13:23,337 WARN L193 SmtUtils]: Spent 1.41 s on a formula simplification that was a NOOP. DAG size: 497 [2020-10-13 15:14:17,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:14:17,902 INFO L93 Difference]: Finished difference Result 17958 states and 30183 transitions. [2020-10-13 15:14:17,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:14:17,903 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 387 [2020-10-13 15:14:17,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:14:17,957 INFO L225 Difference]: With dead ends: 17958 [2020-10-13 15:14:17,957 INFO L226 Difference]: Without dead ends: 10770 [2020-10-13 15:14:17,973 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:14:17,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10770 states. [2020-10-13 15:14:18,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10770 to 10768. [2020-10-13 15:14:18,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10768 states. [2020-10-13 15:14:18,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10768 states to 10768 states and 18095 transitions. [2020-10-13 15:14:18,339 INFO L78 Accepts]: Start accepts. Automaton has 10768 states and 18095 transitions. Word has length 387 [2020-10-13 15:14:18,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:14:18,341 INFO L479 AbstractCegarLoop]: Abstraction has 10768 states and 18095 transitions. [2020-10-13 15:14:18,341 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 15:14:18,341 INFO L276 IsEmpty]: Start isEmpty. Operand 10768 states and 18095 transitions. [2020-10-13 15:14:18,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 388 [2020-10-13 15:14:18,370 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:14:18,371 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] [2020-10-13 15:14:18,371 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 15:14:18,371 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:14:18,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:14:18,372 INFO L82 PathProgramCache]: Analyzing trace with hash 853128584, now seen corresponding path program 1 times [2020-10-13 15:14:18,372 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:14:18,373 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1841472315] [2020-10-13 15:14:18,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:14:18,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:14:18,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:14:18,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:14:19,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:14:19,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:14:19,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:14:20,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:14:20,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:14:20,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:14:21,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:14:23,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:14:23,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 393 [2020-10-13 15:14:23,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 15:14:23,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-13 15:14:23,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:14:23,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:14:23,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 190 [2020-10-13 15:14:23,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-13 15:14:23,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:14:25,137 WARN L193 SmtUtils]: Spent 1.37 s on a formula simplification that was a NOOP. DAG size: 493 [2020-10-13 15:14:25,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:14:25,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:14:25,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:14:25,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:14:25,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:14:25,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:14:25,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-13 15:14:25,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:14:25,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:14:25,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:14:25,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:14:25,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:14:25,562 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 15:14:25,563 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1841472315] [2020-10-13 15:14:25,564 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:14:25,564 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 15:14:25,566 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657067434] [2020-10-13 15:14:25,568 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 15:14:25,568 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:14:25,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 15:14:25,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:14:25,569 INFO L87 Difference]: Start difference. First operand 10768 states and 18095 transitions. Second operand 4 states. [2020-10-13 15:14:27,149 WARN L193 SmtUtils]: Spent 1.47 s on a formula simplification that was a NOOP. DAG size: 497