/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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=DEEPEST --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 language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 00:14:55,324 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 00:14:55,328 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 00:14:55,373 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 00:14:55,374 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 00:14:55,375 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 00:14:55,377 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 00:14:55,380 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 00:14:55,383 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 00:14:55,384 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 00:14:55,385 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 00:14:55,387 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 00:14:55,388 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 00:14:55,389 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 00:14:55,391 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 00:14:55,393 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 00:14:55,394 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 00:14:55,395 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 00:14:55,398 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 00:14:55,400 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 00:14:55,403 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 00:14:55,405 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 00:14:55,406 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 00:14:55,407 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 00:14:55,411 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 00:14:55,412 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 00:14:55,412 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 00:14:55,414 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 00:14:55,414 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 00:14:55,415 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 00:14:55,416 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 00:14:55,417 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 00:14:55,418 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 00:14:55,419 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 00:14:55,421 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 00:14:55,421 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 00:14:55,422 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 00:14:55,423 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 00:14:55,423 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 00:14:55,424 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 00:14:55,425 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 00:14:55,426 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 [2020-10-28 00:14:55,456 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 00:14:55,456 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 00:14:55,458 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 00:14:55,458 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 00:14:55,459 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 00:14:55,459 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 00:14:55,459 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 00:14:55,459 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 00:14:55,460 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 00:14:55,460 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 00:14:55,460 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 00:14:55,460 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 00:14:55,461 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 00:14:55,461 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 00:14:55,461 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 00:14:55,461 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 00:14:55,461 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 00:14:55,462 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 00:14:55,462 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 00:14:55,462 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 00:14:55,462 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 00:14:55,463 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 00:14:55,463 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 00:14:55,463 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 00:14:55,463 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 00:14:55,464 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 00:14:55,464 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 00:14:55,464 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 00:14:55,464 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 00:14:55,464 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-28 00:14:55,853 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 00:14:55,905 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 00:14:55,908 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 00:14:55,909 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 00:14:55,910 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 00:14:55,911 INFO L432 ainManager$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.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2020-10-28 00:14:56,002 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c97252f6a/1fce0d578a484a7b8323efeda9721932/FLAGdcac80c8e [2020-10-28 00:14:57,303 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 00:14:57,304 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2020-10-28 00:14:57,390 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c97252f6a/1fce0d578a484a7b8323efeda9721932/FLAGdcac80c8e [2020-10-28 00:14:57,644 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c97252f6a/1fce0d578a484a7b8323efeda9721932 [2020-10-28 00:14:57,649 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 00:14:57,659 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 00:14:57,664 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 00:14:57,664 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 00:14:57,669 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 00:14:57,671 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:14:57" (1/1) ... [2020-10-28 00:14:57,676 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19065848 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:14:57, skipping insertion in model container [2020-10-28 00:14:57,676 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:14:57" (1/1) ... [2020-10-28 00:14:57,686 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 00:14:58,040 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 00:15:00,046 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 00:15:00,078 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 00:15:01,083 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 00:15:01,136 INFO L208 MainTranslator]: Completed translation [2020-10-28 00:15:01,136 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:15:01 WrapperNode [2020-10-28 00:15:01,136 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 00:15:01,138 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 00:15:01,139 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 00:15:01,140 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 00:15:01,155 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:15:01" (1/1) ... [2020-10-28 00:15:01,157 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:15:01" (1/1) ... [2020-10-28 00:15:01,250 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:15:01" (1/1) ... [2020-10-28 00:15:01,250 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:15:01" (1/1) ... [2020-10-28 00:15:01,449 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:15:01" (1/1) ... [2020-10-28 00:15:01,546 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:15:01" (1/1) ... [2020-10-28 00:15:01,595 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:15:01" (1/1) ... [2020-10-28 00:15:01,664 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 00:15:01,667 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 00:15:01,667 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 00:15:01,737 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 00:15:01,738 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:15:01" (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 [2020-10-28 00:15:01,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 00:15:01,855 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 00:15:01,855 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 00:15:01,856 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 00:15:01,856 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 00:15:01,856 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 00:15:01,856 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 00:15:01,856 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 00:15:01,857 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 00:15:01,857 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-28 00:15:01,858 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-28 00:15:01,858 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-28 00:15:01,858 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-28 00:15:01,858 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 00:15:01,858 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-28 00:15:01,859 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-28 00:15:01,860 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-28 00:15:01,860 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-28 00:15:01,860 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-28 00:15:01,860 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-28 00:15:01,860 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-28 00:15:01,860 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-28 00:15:01,860 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 00:15:01,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 00:15:01,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 00:15:01,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 00:15:01,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 00:15:01,861 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 00:15:01,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 00:15:12,351 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 00:15:12,352 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-28 00:15:12,361 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:15:12 BoogieIcfgContainer [2020-10-28 00:15:12,361 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 00:15:12,366 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 00:15:12,367 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 00:15:12,371 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 00:15:12,372 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 12:14:57" (1/3) ... [2020-10-28 00:15:12,373 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3886f77d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:15:12, skipping insertion in model container [2020-10-28 00:15:12,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:15:01" (2/3) ... [2020-10-28 00:15:12,374 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3886f77d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:15:12, skipping insertion in model container [2020-10-28 00:15:12,374 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:15:12" (3/3) ... [2020-10-28 00:15:12,376 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2020-10-28 00:15:12,390 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 00:15:12,398 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 00:15:12,414 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 00:15:12,475 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 00:15:12,475 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 00:15:12,475 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 00:15:12,475 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 00:15:12,475 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 00:15:12,475 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 00:15:12,476 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 00:15:12,476 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 00:15:12,565 INFO L276 IsEmpty]: Start isEmpty. Operand 3541 states. [2020-10-28 00:15:12,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-28 00:15:12,621 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:15:12,622 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] [2020-10-28 00:15:12,623 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:15:12,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:15:12,633 INFO L82 PathProgramCache]: Analyzing trace with hash 357520483, now seen corresponding path program 1 times [2020-10-28 00:15:12,650 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:15:12,651 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [272161858] [2020-10-28 00:15:12,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:15:13,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:15:13,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:15:13,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:15:14,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:15:14,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:15:15,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:15:16,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:15:18,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:15:18,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 00:15:18,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 00:15:18,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-28 00:15:18,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:15:18,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 00:15:18,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-28 00:15:18,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-28 00:15:18,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 00:15:18,656 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2020-10-28 00:15:22,515 WARN L193 SmtUtils]: Spent 3.75 s on a formula simplification that was a NOOP. DAG size: 766 [2020-10-28 00:15:22,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:15:22,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:15:22,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:15:22,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:15:22,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:15:22,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:15:22,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-28 00:15:22,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:15:22,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:15:22,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:15:22,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:15:22,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:15:22,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:15:22,692 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [272161858] [2020-10-28 00:15:22,694 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:15:22,694 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 00:15:22,695 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676574512] [2020-10-28 00:15:22,701 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 00:15:22,701 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:15:22,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 00:15:22,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-28 00:15:22,720 INFO L87 Difference]: Start difference. First operand 3541 states. Second operand 7 states. [2020-10-28 00:15:26,991 WARN L193 SmtUtils]: Spent 4.07 s on a formula simplification that was a NOOP. DAG size: 770 [2020-10-28 00:16:14,725 WARN L193 SmtUtils]: Spent 3.78 s on a formula simplification that was a NOOP. DAG size: 772 [2020-10-28 00:16:19,374 WARN L193 SmtUtils]: Spent 3.84 s on a formula simplification that was a NOOP. DAG size: 770 [2020-10-28 00:16:26,716 WARN L193 SmtUtils]: Spent 3.61 s on a formula simplification that was a NOOP. DAG size: 768 [2020-10-28 00:16:30,955 WARN L193 SmtUtils]: Spent 3.70 s on a formula simplification that was a NOOP. DAG size: 767 [2020-10-28 00:16:41,843 WARN L193 SmtUtils]: Spent 3.67 s on a formula simplification that was a NOOP. DAG size: 770 [2020-10-28 00:16:45,634 WARN L193 SmtUtils]: Spent 3.73 s on a formula simplification that was a NOOP. DAG size: 769 [2020-10-28 00:16:49,425 WARN L193 SmtUtils]: Spent 3.74 s on a formula simplification that was a NOOP. DAG size: 768 [2020-10-28 00:16:53,727 WARN L193 SmtUtils]: Spent 3.87 s on a formula simplification that was a NOOP. DAG size: 771 [2020-10-28 00:16:53,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:16:53,765 INFO L93 Difference]: Finished difference Result 11067 states and 19455 transitions. [2020-10-28 00:16:53,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-28 00:16:53,771 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 69 [2020-10-28 00:16:53,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:16:53,853 INFO L225 Difference]: With dead ends: 11067 [2020-10-28 00:16:53,853 INFO L226 Difference]: Without dead ends: 7535 [2020-10-28 00:16:53,872 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 38.5s TimeCoverageRelationStatistics Valid=133, Invalid=329, Unknown=0, NotChecked=0, Total=462 [2020-10-28 00:16:53,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7535 states. [2020-10-28 00:16:54,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7535 to 7116. [2020-10-28 00:16:54,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7116 states. [2020-10-28 00:16:54,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7116 states to 7116 states and 9491 transitions. [2020-10-28 00:16:54,294 INFO L78 Accepts]: Start accepts. Automaton has 7116 states and 9491 transitions. Word has length 69 [2020-10-28 00:16:54,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:16:54,294 INFO L481 AbstractCegarLoop]: Abstraction has 7116 states and 9491 transitions. [2020-10-28 00:16:54,295 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 00:16:54,295 INFO L276 IsEmpty]: Start isEmpty. Operand 7116 states and 9491 transitions. [2020-10-28 00:16:54,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-28 00:16:54,321 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:16:54,322 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] [2020-10-28 00:16:54,325 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 00:16:54,325 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:16:54,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:16:54,326 INFO L82 PathProgramCache]: Analyzing trace with hash -217061579, now seen corresponding path program 1 times [2020-10-28 00:16:54,326 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:16:54,329 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [141577234] [2020-10-28 00:16:54,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:16:54,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:16:54,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:16:54,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:16:55,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:16:55,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:16:57,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:16:57,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:16:58,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:16:59,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:16:59,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:16:59,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 00:16:59,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 00:16:59,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-28 00:16:59,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:16:59,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 00:16:59,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-28 00:16:59,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-28 00:16:59,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:17:03,296 WARN L193 SmtUtils]: Spent 3.65 s on a formula simplification that was a NOOP. DAG size: 766 [2020-10-28 00:17:03,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:17:03,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:17:03,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:17:03,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:17:03,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:17:03,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:17:03,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-28 00:17:03,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:17:03,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:17:03,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:17:03,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:17:03,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:17:03,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:17:03,424 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [141577234] [2020-10-28 00:17:03,424 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:17:03,425 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 00:17:03,425 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194097762] [2020-10-28 00:17:03,426 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 00:17:03,427 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:17:03,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 00:17:03,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 00:17:03,428 INFO L87 Difference]: Start difference. First operand 7116 states and 9491 transitions. Second operand 6 states. [2020-10-28 00:17:07,335 WARN L193 SmtUtils]: Spent 3.78 s on a formula simplification that was a NOOP. DAG size: 767 [2020-10-28 00:17:39,880 WARN L193 SmtUtils]: Spent 3.68 s on a formula simplification that was a NOOP. DAG size: 768 [2020-10-28 00:17:46,731 WARN L193 SmtUtils]: Spent 3.77 s on a formula simplification that was a NOOP. DAG size: 767 [2020-10-28 00:17:52,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:17:52,137 INFO L93 Difference]: Finished difference Result 9580 states and 13143 transitions. [2020-10-28 00:17:52,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 00:17:52,139 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 69 [2020-10-28 00:17:52,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:17:52,184 INFO L225 Difference]: With dead ends: 9580 [2020-10-28 00:17:52,185 INFO L226 Difference]: Without dead ends: 9022 [2020-10-28 00:17:52,189 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 15.0s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 00:17:52,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9022 states. [2020-10-28 00:17:52,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9022 to 8325. [2020-10-28 00:17:52,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8325 states. [2020-10-28 00:17:52,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8325 states to 8325 states and 11202 transitions. [2020-10-28 00:17:52,491 INFO L78 Accepts]: Start accepts. Automaton has 8325 states and 11202 transitions. Word has length 69 [2020-10-28 00:17:52,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:17:52,492 INFO L481 AbstractCegarLoop]: Abstraction has 8325 states and 11202 transitions. [2020-10-28 00:17:52,492 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 00:17:52,492 INFO L276 IsEmpty]: Start isEmpty. Operand 8325 states and 11202 transitions. [2020-10-28 00:17:52,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-28 00:17:52,509 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:17:52,509 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] [2020-10-28 00:17:52,509 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 00:17:52,509 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:17:52,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:17:52,510 INFO L82 PathProgramCache]: Analyzing trace with hash 1263249115, now seen corresponding path program 1 times [2020-10-28 00:17:52,510 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:17:52,511 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [223871493] [2020-10-28 00:17:52,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:17:52,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:17:52,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:17:52,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:17:53,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:17:54,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:17:55,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:17:56,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:17:57,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:17:57,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-28 00:17:57,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 00:17:57,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-28 00:17:57,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:17:57,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 00:17:57,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 00:17:57,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-28 00:17:57,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:18:01,649 WARN L193 SmtUtils]: Spent 3.74 s on a formula simplification that was a NOOP. DAG size: 766 [2020-10-28 00:18:01,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:18:01,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:18:01,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:18:01,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:18:01,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:18:01,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:18:01,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-28 00:18:01,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:18:01,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:18:01,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:18:01,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:18:01,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:18:01,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:18:01,773 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [223871493] [2020-10-28 00:18:01,773 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:18:01,773 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 00:18:01,774 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091750462] [2020-10-28 00:18:01,774 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 00:18:01,774 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:18:01,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 00:18:01,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-28 00:18:01,775 INFO L87 Difference]: Start difference. First operand 8325 states and 11202 transitions. Second operand 9 states. [2020-10-28 00:18:05,800 WARN L193 SmtUtils]: Spent 3.88 s on a formula simplification that was a NOOP. DAG size: 778 [2020-10-28 00:18:38,297 WARN L193 SmtUtils]: Spent 3.85 s on a formula simplification that was a NOOP. DAG size: 780 [2020-10-28 00:18:45,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:18:45,319 INFO L93 Difference]: Finished difference Result 12545 states and 17684 transitions. [2020-10-28 00:18:45,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 00:18:45,320 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 70 [2020-10-28 00:18:45,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:18:45,375 INFO L225 Difference]: With dead ends: 12545 [2020-10-28 00:18:45,375 INFO L226 Difference]: Without dead ends: 11223 [2020-10-28 00:18:45,382 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 11.8s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2020-10-28 00:18:45,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11223 states. [2020-10-28 00:18:45,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11223 to 9235. [2020-10-28 00:18:45,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9235 states. [2020-10-28 00:18:45,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9235 states to 9235 states and 12556 transitions. [2020-10-28 00:18:45,805 INFO L78 Accepts]: Start accepts. Automaton has 9235 states and 12556 transitions. Word has length 70 [2020-10-28 00:18:45,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:18:45,806 INFO L481 AbstractCegarLoop]: Abstraction has 9235 states and 12556 transitions. [2020-10-28 00:18:45,806 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 00:18:45,807 INFO L276 IsEmpty]: Start isEmpty. Operand 9235 states and 12556 transitions. [2020-10-28 00:18:45,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-28 00:18:45,826 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:18:45,828 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] [2020-10-28 00:18:45,828 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 00:18:45,828 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:18:45,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:18:45,829 INFO L82 PathProgramCache]: Analyzing trace with hash -770076675, now seen corresponding path program 1 times [2020-10-28 00:18:45,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:18:45,829 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1682389592] [2020-10-28 00:18:45,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:18:45,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:18:45,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:18:46,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:18:46,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:18:46,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:18:47,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking...