/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=SHALLOWEST --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_opt-floodmax.5.3.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 06:11:16,259 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 06:11:16,263 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 06:11:16,325 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 06:11:16,326 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 06:11:16,332 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 06:11:16,335 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 06:11:16,340 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 06:11:16,343 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 06:11:16,349 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 06:11:16,350 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 06:11:16,352 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 06:11:16,352 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 06:11:16,356 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 06:11:16,359 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 06:11:16,361 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 06:11:16,363 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 06:11:16,366 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 06:11:16,390 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 06:11:16,398 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 06:11:16,400 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 06:11:16,402 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 06:11:16,405 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 06:11:16,406 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 06:11:16,415 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 06:11:16,416 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 06:11:16,416 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 06:11:16,419 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 06:11:16,419 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 06:11:16,421 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 06:11:16,421 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 06:11:16,422 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 06:11:16,424 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 06:11:16,426 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 06:11:16,427 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 06:11:16,427 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 06:11:16,428 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 06:11:16,429 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 06:11:16,429 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 06:11:16,430 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 06:11:16,431 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 06:11:16,438 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 [2020-10-27 06:11:16,487 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 06:11:16,487 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 06:11:16,491 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 06:11:16,491 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 06:11:16,492 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 06:11:16,492 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 06:11:16,492 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 06:11:16,492 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 06:11:16,492 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 06:11:16,493 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 06:11:16,494 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 06:11:16,494 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 06:11:16,494 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 06:11:16,494 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 06:11:16,495 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 06:11:16,495 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 06:11:16,495 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 06:11:16,495 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 06:11:16,496 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 06:11:16,496 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 06:11:16,496 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 06:11:16,496 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 06:11:16,496 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 06:11:16,497 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 06:11:16,497 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 06:11:16,497 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 06:11:16,497 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 06:11:16,498 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 06:11:16,498 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 06:11:16,498 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 06:11:16,953 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 06:11:16,977 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 06:11:16,980 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 06:11:16,982 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 06:11:16,982 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 06:11:16,983 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.3.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c [2020-10-27 06:11:17,067 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/acf896ba8/7663da12be164221a98afb540758144d/FLAG9f812ae94 [2020-10-27 06:11:18,376 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 06:11:18,377 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.3.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c [2020-10-27 06:11:18,471 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/acf896ba8/7663da12be164221a98afb540758144d/FLAG9f812ae94 [2020-10-27 06:11:18,608 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/acf896ba8/7663da12be164221a98afb540758144d [2020-10-27 06:11:18,611 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 06:11:18,618 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 06:11:18,622 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 06:11:18,622 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 06:11:18,626 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 06:11:18,627 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:11:18" (1/1) ... [2020-10-27 06:11:18,633 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4216b8ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:11:18, skipping insertion in model container [2020-10-27 06:11:18,633 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:11:18" (1/1) ... [2020-10-27 06:11:18,661 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 06:11:19,140 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 06:11:23,715 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 06:11:23,742 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 06:11:27,265 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 06:11:27,303 INFO L208 MainTranslator]: Completed translation [2020-10-27 06:11:27,304 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:11:27 WrapperNode [2020-10-27 06:11:27,304 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 06:11:27,305 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 06:11:27,305 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 06:11:27,306 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 06:11:27,321 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:11:27" (1/1) ... [2020-10-27 06:11:27,322 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:11:27" (1/1) ... [2020-10-27 06:11:27,401 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:11:27" (1/1) ... [2020-10-27 06:11:27,401 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:11:27" (1/1) ... [2020-10-27 06:11:27,570 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:11:27" (1/1) ... [2020-10-27 06:11:27,676 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:11:27" (1/1) ... [2020-10-27 06:11:27,730 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:11:27" (1/1) ... [2020-10-27 06:11:27,947 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 06:11:27,948 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 06:11:27,948 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 06:11:27,948 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 06:11:27,949 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:11:27" (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 [2020-10-27 06:11:28,029 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 06:11:28,030 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 06:11:28,030 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 06:11:28,030 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 06:11:28,030 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 06:11:28,030 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 06:11:28,030 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 06:11:28,031 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 06:11:28,031 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 06:11:28,031 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 06:11:28,031 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 06:11:28,031 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 06:11:28,031 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 06:11:28,031 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 06:11:28,032 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 06:11:28,032 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 06:11:28,032 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 06:11:28,032 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 06:11:28,032 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-27 06:11:28,032 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-27 06:11:28,032 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 06:11:28,033 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 06:11:28,033 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 06:11:28,033 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 06:11:28,033 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 06:11:28,033 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 06:11:28,033 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 06:11:28,033 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 06:11:28,034 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 06:11:45,731 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 06:11:45,732 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 06:11:45,741 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:11:45 BoogieIcfgContainer [2020-10-27 06:11:45,741 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 06:11:45,743 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 06:11:45,744 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 06:11:45,747 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 06:11:45,748 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 06:11:18" (1/3) ... [2020-10-27 06:11:45,748 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4218cbc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 06:11:45, skipping insertion in model container [2020-10-27 06:11:45,749 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:11:27" (2/3) ... [2020-10-27 06:11:45,749 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4218cbc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 06:11:45, skipping insertion in model container [2020-10-27 06:11:45,749 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:11:45" (3/3) ... [2020-10-27 06:11:45,751 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.5.3.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c [2020-10-27 06:11:45,763 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 06:11:45,771 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 06:11:45,788 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 06:11:45,838 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 06:11:45,839 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 06:11:45,839 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 06:11:45,839 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 06:11:45,839 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 06:11:45,839 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 06:11:45,839 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 06:11:45,839 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 06:11:45,958 INFO L276 IsEmpty]: Start isEmpty. Operand 6858 states. [2020-10-27 06:11:46,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2020-10-27 06:11:46,033 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:11:46,034 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:11:46,035 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:11:46,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:11:46,043 INFO L82 PathProgramCache]: Analyzing trace with hash -284146511, now seen corresponding path program 1 times [2020-10-27 06:11:46,053 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:11:46,053 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [981466490] [2020-10-27 06:11:46,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:11:46,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:11:46,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:11:47,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:11:47,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:11:48,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:11:49,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:11:49,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:11:50,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:11:51,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:11:51,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:11:51,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 401 [2020-10-27 06:11:51,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 06:11:51,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5092 [2020-10-27 06:11:51,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:11:51,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:11:51,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:11:51,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 192 [2020-10-27 06:11:51,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 06:11:54,185 WARN L193 SmtUtils]: Spent 1.72 s on a formula simplification that was a NOOP. DAG size: 520 [2020-10-27 06:11:54,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:11:54,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:11:54,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:11:54,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:11:54,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:11:54,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:11:54,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-27 06:11:54,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:11:54,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:11:54,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:11:54,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:11:54,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:11:54,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:11:54,774 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [981466490] [2020-10-27 06:11:54,776 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:11:54,777 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:11:54,777 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113004201] [2020-10-27 06:11:54,784 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:11:54,784 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:11:54,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:11:54,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:11:54,802 INFO L87 Difference]: Start difference. First operand 6858 states. Second operand 5 states. [2020-10-27 06:13:02,942 WARN L193 SmtUtils]: Spent 1.97 s on a formula simplification that was a NOOP. DAG size: 526 [2020-10-27 06:13:08,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:13:08,418 INFO L93 Difference]: Finished difference Result 20467 states and 35797 transitions. [2020-10-27 06:13:08,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 06:13:08,421 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 393 [2020-10-27 06:13:08,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:13:08,533 INFO L225 Difference]: With dead ends: 20467 [2020-10-27 06:13:08,533 INFO L226 Difference]: Without dead ends: 13650 [2020-10-27 06:13:08,557 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:13:08,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13650 states. [2020-10-27 06:13:09,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13650 to 13647. [2020-10-27 06:13:09,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13647 states. [2020-10-27 06:13:09,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13647 states to 13647 states and 22514 transitions. [2020-10-27 06:13:09,506 INFO L78 Accepts]: Start accepts. Automaton has 13647 states and 22514 transitions. Word has length 393 [2020-10-27 06:13:09,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:13:09,515 INFO L481 AbstractCegarLoop]: Abstraction has 13647 states and 22514 transitions. [2020-10-27 06:13:09,515 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:13:09,515 INFO L276 IsEmpty]: Start isEmpty. Operand 13647 states and 22514 transitions. [2020-10-27 06:13:09,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2020-10-27 06:13:09,567 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:13:09,567 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:13:09,568 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 06:13:09,568 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:13:09,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:13:09,569 INFO L82 PathProgramCache]: Analyzing trace with hash 1674747427, now seen corresponding path program 1 times [2020-10-27 06:13:09,569 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:13:09,571 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [701762720] [2020-10-27 06:13:09,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:13:09,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:13:09,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:13:09,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:13:10,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:13:10,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:13:11,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:13:11,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:13:11,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:13:12,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:13:12,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:13:13,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:13:13,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:13:13,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:13:14,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:13:14,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:13:14,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 401 [2020-10-27 06:13:14,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 06:13:14,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5072 [2020-10-27 06:13:14,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:13:14,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:13:14,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:13:14,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 199 [2020-10-27 06:13:14,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:13:17,006 WARN L193 SmtUtils]: Spent 1.91 s on a formula simplification that was a NOOP. DAG size: 520 [2020-10-27 06:13:17,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:13:17,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:13:17,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:13:17,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:13:17,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:13:17,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:13:17,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-27 06:13:17,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:13:17,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:13:17,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:13:17,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:13:17,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:13:17,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:13:17,650 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [701762720] [2020-10-27 06:13:17,651 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:13:17,651 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:13:17,654 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695716275] [2020-10-27 06:13:17,657 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:13:17,657 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:13:17,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:13:17,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:13:17,658 INFO L87 Difference]: Start difference. First operand 13647 states and 22514 transitions. Second operand 5 states. [2020-10-27 06:14:26,664 WARN L193 SmtUtils]: Spent 2.08 s on a formula simplification that was a NOOP. DAG size: 526 [2020-10-27 06:14:31,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:14:31,591 INFO L93 Difference]: Finished difference Result 40355 states and 66553 transitions. [2020-10-27 06:14:31,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:14:31,592 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 393 [2020-10-27 06:14:31,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:14:31,690 INFO L225 Difference]: With dead ends: 40355 [2020-10-27 06:14:31,690 INFO L226 Difference]: Without dead ends: 26863 [2020-10-27 06:14:31,717 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:14:31,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26863 states. [2020-10-27 06:14:33,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26863 to 26860. [2020-10-27 06:14:33,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26860 states. [2020-10-27 06:14:33,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26860 states to 26860 states and 44206 transitions. [2020-10-27 06:14:33,275 INFO L78 Accepts]: Start accepts. Automaton has 26860 states and 44206 transitions. Word has length 393 [2020-10-27 06:14:33,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:14:33,277 INFO L481 AbstractCegarLoop]: Abstraction has 26860 states and 44206 transitions. [2020-10-27 06:14:33,278 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:14:33,278 INFO L276 IsEmpty]: Start isEmpty. Operand 26860 states and 44206 transitions. [2020-10-27 06:14:33,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2020-10-27 06:14:33,358 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:14:33,358 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:14:33,358 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 06:14:33,359 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:14:33,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:14:33,362 INFO L82 PathProgramCache]: Analyzing trace with hash 1488389350, now seen corresponding path program 1 times [2020-10-27 06:14:33,362 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:14:33,363 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1394504549] [2020-10-27 06:14:33,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:14:33,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:14:33,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:14:33,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:14:33,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:14:34,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:14:34,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:14:34,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:14:34,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:14:35,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:14:36,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:14:36,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:14:36,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:14:36,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:14:37,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:14:37,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:14:38,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:14:38,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 402 [2020-10-27 06:14:38,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-27 06:14:38,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5222 [2020-10-27 06:14:38,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:14:38,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:14:38,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:14:38,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 193 [2020-10-27 06:14:38,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:14:40,869 WARN L193 SmtUtils]: Spent 1.86 s on a formula simplification that was a NOOP. DAG size: 520 [2020-10-27 06:14:40,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:14:40,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:14:40,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:14:40,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:14:40,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:14:40,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:14:40,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-27 06:14:40,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:14:40,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:14:40,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:14:40,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:14:40,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:14:41,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:14:41,262 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1394504549] [2020-10-27 06:14:41,262 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:14:41,263 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:14:41,263 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186516658] [2020-10-27 06:14:41,264 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:14:41,264 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:14:41,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:14:41,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:14:41,265 INFO L87 Difference]: Start difference. First operand 26860 states and 44206 transitions. Second operand 5 states.