/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.UNBOUNDED.pals.c.v+sep-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 14:48:49,494 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 14:48:49,497 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 14:48:49,520 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 14:48:49,520 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 14:48:49,521 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 14:48:49,523 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 14:48:49,524 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 14:48:49,526 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 14:48:49,527 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 14:48:49,528 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 14:48:49,529 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 14:48:49,529 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 14:48:49,530 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 14:48:49,531 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 14:48:49,532 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 14:48:49,533 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 14:48:49,533 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 14:48:49,535 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 14:48:49,537 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 14:48:49,538 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 14:48:49,539 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 14:48:49,540 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 14:48:49,541 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 14:48:49,543 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 14:48:49,544 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 14:48:49,544 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 14:48:49,545 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 14:48:49,545 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 14:48:49,546 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 14:48:49,546 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 14:48:49,547 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 14:48:49,547 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 14:48:49,548 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 14:48:49,549 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 14:48:49,549 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 14:48:49,550 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 14:48:49,550 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 14:48:49,550 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 14:48:49,551 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 14:48:49,552 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 14:48:49,553 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 14:48:49,575 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 14:48:49,575 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 14:48:49,577 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 14:48:49,577 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 14:48:49,577 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 14:48:49,577 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 14:48:49,578 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 14:48:49,578 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 14:48:49,578 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 14:48:49,578 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 14:48:49,578 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 14:48:49,579 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 14:48:49,579 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 14:48:49,579 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 14:48:49,579 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 14:48:49,579 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 14:48:49,580 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 14:48:49,580 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 14:48:49,580 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 14:48:49,580 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 14:48:49,581 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 14:48:49,581 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 14:48:49,581 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 14:48:49,581 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 14:48:49,581 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 14:48:49,582 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 14:48:49,582 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 14:48:49,582 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 14:48:49,582 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 14:48:49,582 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 14:48:49,866 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 14:48:49,878 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 14:48:49,881 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 14:48:49,883 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 14:48:49,883 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 14:48:49,884 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2020-10-13 14:48:49,943 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f870ae905/7775f68a0d7d490283c059ffbdab0d1b/FLAGc1a5022d7 [2020-10-13 14:48:50,904 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 14:48:50,905 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2020-10-13 14:48:50,989 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f870ae905/7775f68a0d7d490283c059ffbdab0d1b/FLAGc1a5022d7 [2020-10-13 14:48:51,283 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f870ae905/7775f68a0d7d490283c059ffbdab0d1b [2020-10-13 14:48:51,291 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 14:48:51,292 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 14:48:51,293 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 14:48:51,294 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 14:48:51,297 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 14:48:51,298 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 02:48:51" (1/1) ... [2020-10-13 14:48:51,301 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d55f613 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:48:51, skipping insertion in model container [2020-10-13 14:48:51,301 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 02:48:51" (1/1) ... [2020-10-13 14:48:51,309 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 14:48:51,731 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 14:48:54,615 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 14:48:54,652 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 14:48:56,590 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 14:48:56,645 INFO L208 MainTranslator]: Completed translation [2020-10-13 14:48:56,645 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:48:56 WrapperNode [2020-10-13 14:48:56,646 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 14:48:56,647 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 14:48:56,647 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 14:48:56,647 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 14:48:56,670 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:48:56" (1/1) ... [2020-10-13 14:48:56,671 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:48:56" (1/1) ... [2020-10-13 14:48:56,816 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:48:56" (1/1) ... [2020-10-13 14:48:56,817 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:48:56" (1/1) ... [2020-10-13 14:48:57,033 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:48:56" (1/1) ... [2020-10-13 14:48:57,131 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:48:56" (1/1) ... [2020-10-13 14:48:57,217 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:48:56" (1/1) ... [2020-10-13 14:48:57,318 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 14:48:57,318 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 14:48:57,319 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 14:48:57,319 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 14:48:57,320 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:48:56" (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 14:48:57,401 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 14:48:57,401 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 14:48:57,401 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-13 14:48:57,401 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 14:48:57,402 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 14:48:57,402 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-13 14:48:57,402 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-13 14:48:57,402 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-13 14:48:57,403 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-13 14:48:57,403 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 14:48:57,403 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-13 14:48:57,403 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-13 14:48:57,403 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-13 14:48:57,403 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-13 14:48:57,404 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-13 14:48:57,404 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-13 14:48:57,404 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-13 14:48:57,404 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-13 14:48:57,404 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-13 14:48:57,405 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-13 14:48:57,405 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 14:48:57,405 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 14:48:57,405 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 14:49:10,713 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 14:49:10,714 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-13 14:49:10,744 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 02:49:10 BoogieIcfgContainer [2020-10-13 14:49:10,744 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 14:49:10,748 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 14:49:10,748 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 14:49:10,751 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 14:49:10,751 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 02:48:51" (1/3) ... [2020-10-13 14:49:10,753 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b636666 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 02:49:10, skipping insertion in model container [2020-10-13 14:49:10,753 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:48:56" (2/3) ... [2020-10-13 14:49:10,754 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b636666 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 02:49:10, skipping insertion in model container [2020-10-13 14:49:10,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 02:49:10" (3/3) ... [2020-10-13 14:49:10,756 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2020-10-13 14:49:10,766 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 14:49:10,780 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 19 error locations. [2020-10-13 14:49:10,794 INFO L251 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2020-10-13 14:49:10,841 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 14:49:10,841 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 14:49:10,841 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 14:49:10,841 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 14:49:10,842 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 14:49:10,842 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 14:49:10,842 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 14:49:10,842 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 14:49:10,938 INFO L276 IsEmpty]: Start isEmpty. Operand 6188 states. [2020-10-13 14:49:10,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-13 14:49:10,990 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:49:10,991 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] [2020-10-13 14:49:10,992 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 14:49:11,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:49:11,062 INFO L82 PathProgramCache]: Analyzing trace with hash -1648974574, now seen corresponding path program 1 times [2020-10-13 14:49:11,072 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:49:11,073 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1112909440] [2020-10-13 14:49:11,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:49:11,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:49:11,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:49:12,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:49:15,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:49:15,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:49:16,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:49:16,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:49:16,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-13 14:49:16,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 14:49:16,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-13 14:49:16,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:49:16,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 14:49:16,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-13 14:49:16,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-13 14:49:16,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 14:49:20,511 WARN L193 SmtUtils]: Spent 3.53 s on a formula simplification that was a NOOP. DAG size: 940 [2020-10-13 14:49:20,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:49:20,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:49:20,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:49:20,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:49:20,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:49:20,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:49:20,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-13 14:49:20,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:49:20,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:49:20,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:49:20,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:49:20,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:49:20,660 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 14:49:20,660 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1112909440] [2020-10-13 14:49:20,662 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:49:20,663 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 14:49:20,664 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994743985] [2020-10-13 14:49:20,669 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 14:49:20,669 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:49:20,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 14:49:20,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:49:20,686 INFO L87 Difference]: Start difference. First operand 6188 states. Second operand 6 states. [2020-10-13 14:49:24,350 WARN L193 SmtUtils]: Spent 3.48 s on a formula simplification that was a NOOP. DAG size: 941 [2020-10-13 14:50:32,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:50:32,497 INFO L93 Difference]: Finished difference Result 8471 states and 14881 transitions. [2020-10-13 14:50:32,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 14:50:32,499 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 81 [2020-10-13 14:50:32,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:50:32,555 INFO L225 Difference]: With dead ends: 8471 [2020-10-13 14:50:32,556 INFO L226 Difference]: Without dead ends: 6644 [2020-10-13 14:50:32,568 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-13 14:50:32,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6644 states. [2020-10-13 14:50:32,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6644 to 6388. [2020-10-13 14:50:32,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6388 states. [2020-10-13 14:50:32,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6388 states to 6388 states and 8462 transitions. [2020-10-13 14:50:32,824 INFO L78 Accepts]: Start accepts. Automaton has 6388 states and 8462 transitions. Word has length 81 [2020-10-13 14:50:32,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:50:32,825 INFO L479 AbstractCegarLoop]: Abstraction has 6388 states and 8462 transitions. [2020-10-13 14:50:32,826 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 14:50:32,826 INFO L276 IsEmpty]: Start isEmpty. Operand 6388 states and 8462 transitions. [2020-10-13 14:50:32,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-13 14:50:32,847 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:50:32,847 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 14:50:32,848 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 14:50:32,848 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 14:50:32,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:50:32,849 INFO L82 PathProgramCache]: Analyzing trace with hash -1770188140, now seen corresponding path program 1 times [2020-10-13 14:50:32,849 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:50:32,850 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1477930792] [2020-10-13 14:50:32,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:50:32,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:50:33,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:50:33,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:50:34,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:50:38,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:50:38,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 14:50:38,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 14:50:38,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5056 [2020-10-13 14:50:38,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:50:38,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 14:50:38,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 14:50:38,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-13 14:50:38,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:50:42,007 WARN L193 SmtUtils]: Spent 3.40 s on a formula simplification that was a NOOP. DAG size: 940 [2020-10-13 14:50:42,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:50:42,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:50:42,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:50:42,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:50:42,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:50:42,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:50:42,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 14:50:42,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:50:42,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:50:42,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:50:42,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:50:42,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:50:42,170 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 14:50:42,171 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1477930792] [2020-10-13 14:50:42,171 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:50:42,171 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 14:50:42,172 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861080313] [2020-10-13 14:50:42,173 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 14:50:42,174 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:50:42,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 14:50:42,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-13 14:50:42,174 INFO L87 Difference]: Start difference. First operand 6388 states and 8462 transitions. Second operand 9 states. [2020-10-13 14:50:49,876 WARN L193 SmtUtils]: Spent 7.45 s on a formula simplification. DAG size of input: 970 DAG size of output: 967 [2020-10-13 14:50:50,278 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 35 [2020-10-13 14:50:50,658 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 40 [2020-10-13 14:50:53,917 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 40 [2020-10-13 14:51:10,773 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 40 [2020-10-13 14:51:55,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:51:55,143 INFO L93 Difference]: Finished difference Result 11017 states and 15209 transitions. [2020-10-13 14:51:55,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:51:55,145 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 82 [2020-10-13 14:51:55,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:51:55,197 INFO L225 Difference]: With dead ends: 11017 [2020-10-13 14:51:55,197 INFO L226 Difference]: Without dead ends: 10583 [2020-10-13 14:51:55,202 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 12.0s TimeCoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2020-10-13 14:51:55,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10583 states. [2020-10-13 14:51:55,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10583 to 6351. [2020-10-13 14:51:55,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6351 states. [2020-10-13 14:51:55,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6351 states to 6351 states and 8410 transitions. [2020-10-13 14:51:55,568 INFO L78 Accepts]: Start accepts. Automaton has 6351 states and 8410 transitions. Word has length 82 [2020-10-13 14:51:55,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:51:55,568 INFO L479 AbstractCegarLoop]: Abstraction has 6351 states and 8410 transitions. [2020-10-13 14:51:55,569 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 14:51:55,569 INFO L276 IsEmpty]: Start isEmpty. Operand 6351 states and 8410 transitions. [2020-10-13 14:51:55,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-13 14:51:55,584 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:51:55,585 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 14:51:55,585 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 14:51:55,585 INFO L427 AbstractCegarLoop]: === Iteration 3 === [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 14:51:55,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:51:55,586 INFO L82 PathProgramCache]: Analyzing trace with hash 577466158, now seen corresponding path program 1 times [2020-10-13 14:51:55,586 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:51:55,586 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1389484992] [2020-10-13 14:51:55,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:51:55,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:51:55,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:51:55,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:51:56,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:51:56,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:51:58,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:51:59,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:52:00,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:52:00,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 14:52:00,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 14:52:00,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-13 14:52:00,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:52:00,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 14:52:00,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 14:52:00,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-13 14:52:00,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:52:04,685 WARN L193 SmtUtils]: Spent 3.76 s on a formula simplification that was a NOOP. DAG size: 940 [2020-10-13 14:52:04,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:52:04,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:52:04,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:52:04,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:52:04,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:52:04,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:52:04,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-13 14:52:04,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:52:04,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:52:04,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:52:04,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 14:52:04,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:52:04,907 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 14:52:04,907 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1389484992] [2020-10-13 14:52:04,908 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:52:04,908 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:52:04,908 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5274539] [2020-10-13 14:52:04,909 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 14:52:04,909 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:52:04,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 14:52:04,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:52:04,910 INFO L87 Difference]: Start difference. First operand 6351 states and 8410 transitions. Second operand 6 states. [2020-10-13 14:52:08,561 WARN L193 SmtUtils]: Spent 3.50 s on a formula simplification that was a NOOP. DAG size: 949