/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 19:11:11,700 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 19:11:11,705 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 19:11:11,746 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 19:11:11,747 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 19:11:11,748 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 19:11:11,750 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 19:11:11,752 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 19:11:11,754 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 19:11:11,756 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 19:11:11,757 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 19:11:11,758 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 19:11:11,759 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 19:11:11,760 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 19:11:11,762 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 19:11:11,763 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 19:11:11,764 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 19:11:11,766 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 19:11:11,768 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 19:11:11,783 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 19:11:11,788 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 19:11:11,791 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 19:11:11,796 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 19:11:11,798 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 19:11:11,804 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 19:11:11,808 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 19:11:11,808 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 19:11:11,810 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 19:11:11,810 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 19:11:11,815 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 19:11:11,816 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 19:11:11,817 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 19:11:11,818 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 19:11:11,820 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 19:11:11,821 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 19:11:11,821 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 19:11:11,822 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 19:11:11,822 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 19:11:11,824 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 19:11:11,825 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 19:11:11,826 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 19:11:11,828 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 19:11:11,886 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 19:11:11,886 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 19:11:11,888 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 19:11:11,889 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 19:11:11,889 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 19:11:11,889 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 19:11:11,889 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 19:11:11,890 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 19:11:11,890 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 19:11:11,892 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 19:11:11,893 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 19:11:11,893 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 19:11:11,893 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 19:11:11,893 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 19:11:11,894 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 19:11:11,894 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 19:11:11,894 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 19:11:11,894 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 19:11:11,895 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 19:11:11,895 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 19:11:11,895 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 19:11:11,895 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 19:11:11,895 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 19:11:11,896 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 19:11:11,896 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 19:11:11,896 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 19:11:11,896 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 19:11:11,896 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 19:11:11,897 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 19:11:11,897 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 19:11:12,319 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 19:11:12,350 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 19:11:12,353 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 19:11:12,354 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 19:11:12,355 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 19:11:12,356 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2020-10-28 19:11:12,446 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/69b96dca8/8c90ac377144470db9a0bb5b4c5700fa/FLAGef79462e0 [2020-10-28 19:11:13,178 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 19:11:13,179 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2020-10-28 19:11:13,202 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/69b96dca8/8c90ac377144470db9a0bb5b4c5700fa/FLAGef79462e0 [2020-10-28 19:11:13,405 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/69b96dca8/8c90ac377144470db9a0bb5b4c5700fa [2020-10-28 19:11:13,409 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 19:11:13,416 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 19:11:13,420 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 19:11:13,420 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 19:11:13,424 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 19:11:13,425 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 07:11:13" (1/1) ... [2020-10-28 19:11:13,429 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5447c4ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:11:13, skipping insertion in model container [2020-10-28 19:11:13,429 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 07:11:13" (1/1) ... [2020-10-28 19:11:13,437 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 19:11:13,500 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 19:11:14,179 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 19:11:14,193 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 19:11:14,381 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 19:11:14,405 INFO L208 MainTranslator]: Completed translation [2020-10-28 19:11:14,406 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:11:14 WrapperNode [2020-10-28 19:11:14,406 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 19:11:14,407 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 19:11:14,408 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 19:11:14,408 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 19:11:14,449 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:11:14" (1/1) ... [2020-10-28 19:11:14,451 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:11:14" (1/1) ... [2020-10-28 19:11:14,490 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:11:14" (1/1) ... [2020-10-28 19:11:14,493 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:11:14" (1/1) ... [2020-10-28 19:11:14,547 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:11:14" (1/1) ... [2020-10-28 19:11:14,563 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:11:14" (1/1) ... [2020-10-28 19:11:14,569 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:11:14" (1/1) ... [2020-10-28 19:11:14,577 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 19:11:14,578 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 19:11:14,578 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 19:11:14,579 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 19:11:14,580 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:11:14" (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 19:11:14,670 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 19:11:14,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 19:11:14,671 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 19:11:14,671 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 19:11:14,671 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 19:11:14,671 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 19:11:14,672 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 19:11:14,672 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 19:11:14,672 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 19:11:14,672 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-28 19:11:14,672 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-28 19:11:14,672 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-28 19:11:14,673 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 19:11:14,673 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-28 19:11:14,673 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-28 19:11:14,673 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-28 19:11:14,673 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-28 19:11:14,673 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-28 19:11:14,673 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-28 19:11:14,674 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-28 19:11:14,674 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 19:11:14,674 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 19:11:14,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 19:11:14,674 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 19:11:14,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 19:11:14,675 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 19:11:14,675 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 19:11:16,056 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 19:11:16,057 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-28 19:11:16,059 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 07:11:16 BoogieIcfgContainer [2020-10-28 19:11:16,059 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 19:11:16,061 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 19:11:16,061 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 19:11:16,065 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 19:11:16,065 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 07:11:13" (1/3) ... [2020-10-28 19:11:16,066 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@407e9097 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 07:11:16, skipping insertion in model container [2020-10-28 19:11:16,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:11:14" (2/3) ... [2020-10-28 19:11:16,067 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@407e9097 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 07:11:16, skipping insertion in model container [2020-10-28 19:11:16,067 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 07:11:16" (3/3) ... [2020-10-28 19:11:16,069 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2020-10-28 19:11:16,081 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 19:11:16,087 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 19:11:16,101 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 19:11:16,133 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 19:11:16,133 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 19:11:16,133 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 19:11:16,133 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 19:11:16,134 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 19:11:16,134 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 19:11:16,134 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 19:11:16,134 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 19:11:16,161 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states. [2020-10-28 19:11:16,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-28 19:11:16,179 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:11:16,180 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] [2020-10-28 19:11:16,181 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:11:16,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:11:16,188 INFO L82 PathProgramCache]: Analyzing trace with hash 1997048065, now seen corresponding path program 1 times [2020-10-28 19:11:16,198 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:11:16,198 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [6308504] [2020-10-28 19:11:16,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:11:16,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:11:16,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:17,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:17,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:17,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:17,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:18,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:18,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:18,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:18,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:18,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:19,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:19,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:21,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:21,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:11:21,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-28 19:11:21,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-28 19:11:21,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-28 19:11:21,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:11:21,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:11:21,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:11:21,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-28 19:11:21,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-28 19:11:21,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 19:11:22,175 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 19:11:22,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:11:22,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:11:22,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:22,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:11:22,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:11:22,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:11:22,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-28 19:11:22,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:11:22,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:11:22,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:11:22,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:11:22,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:11:22,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 19:11:22,298 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 19:11:22,299 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [6308504] [2020-10-28 19:11:22,301 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:11:22,301 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 19:11:22,302 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615739766] [2020-10-28 19:11:22,308 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 19:11:22,308 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:11:22,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 19:11:22,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 19:11:22,327 INFO L87 Difference]: Start difference. First operand 340 states. Second operand 4 states. [2020-10-28 19:11:22,743 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-28 19:11:24,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:11:24,918 INFO L93 Difference]: Finished difference Result 687 states and 1188 transitions. [2020-10-28 19:11:24,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 19:11:24,921 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 152 [2020-10-28 19:11:24,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:11:24,945 INFO L225 Difference]: With dead ends: 687 [2020-10-28 19:11:24,945 INFO L226 Difference]: Without dead ends: 550 [2020-10-28 19:11:24,949 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:11:24,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2020-10-28 19:11:25,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 547. [2020-10-28 19:11:25,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 547 states. [2020-10-28 19:11:25,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 820 transitions. [2020-10-28 19:11:25,087 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 820 transitions. Word has length 152 [2020-10-28 19:11:25,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:11:25,091 INFO L481 AbstractCegarLoop]: Abstraction has 547 states and 820 transitions. [2020-10-28 19:11:25,096 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 19:11:25,096 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 820 transitions. [2020-10-28 19:11:25,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-28 19:11:25,107 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:11:25,108 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] [2020-10-28 19:11:25,108 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 19:11:25,108 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:11:25,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:11:25,109 INFO L82 PathProgramCache]: Analyzing trace with hash -1614733319, now seen corresponding path program 1 times [2020-10-28 19:11:25,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:11:25,110 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [801103987] [2020-10-28 19:11:25,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:11:25,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:11:25,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:25,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:25,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:25,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:25,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:25,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:25,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:25,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:26,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:26,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:26,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:27,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:28,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:30,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:11:30,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-28 19:11:30,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-28 19:11:30,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 19:11:30,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:11:30,197 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:11:30,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:11:30,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-28 19:11:30,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-28 19:11:30,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 19:11:30,727 WARN L193 SmtUtils]: Spent 394.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 19:11:30,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:11:30,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:11:30,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:30,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:11:30,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:11:30,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:11:30,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 19:11:30,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:11:30,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:11:30,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:11:30,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:11:30,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:11:30,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:11:30,882 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 19:11:30,883 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [801103987] [2020-10-28 19:11:30,883 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:11:30,884 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 19:11:30,885 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379827463] [2020-10-28 19:11:30,887 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 19:11:30,888 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:11:30,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 19:11:30,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 19:11:30,889 INFO L87 Difference]: Start difference. First operand 547 states and 820 transitions. Second operand 4 states. [2020-10-28 19:11:31,294 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-28 19:11:32,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:11:32,913 INFO L93 Difference]: Finished difference Result 1155 states and 1773 transitions. [2020-10-28 19:11:32,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 19:11:32,914 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 152 [2020-10-28 19:11:32,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:11:32,925 INFO L225 Difference]: With dead ends: 1155 [2020-10-28 19:11:32,926 INFO L226 Difference]: Without dead ends: 950 [2020-10-28 19:11:32,932 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:11:32,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 950 states. [2020-10-28 19:11:32,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 950 to 947. [2020-10-28 19:11:32,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 947 states. [2020-10-28 19:11:32,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 947 states to 947 states and 1430 transitions. [2020-10-28 19:11:32,996 INFO L78 Accepts]: Start accepts. Automaton has 947 states and 1430 transitions. Word has length 152 [2020-10-28 19:11:32,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:11:32,998 INFO L481 AbstractCegarLoop]: Abstraction has 947 states and 1430 transitions. [2020-10-28 19:11:32,998 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 19:11:32,998 INFO L276 IsEmpty]: Start isEmpty. Operand 947 states and 1430 transitions. [2020-10-28 19:11:33,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-28 19:11:33,006 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:11:33,007 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] [2020-10-28 19:11:33,007 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 19:11:33,008 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:11:33,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:11:33,008 INFO L82 PathProgramCache]: Analyzing trace with hash -213247195, now seen corresponding path program 1 times [2020-10-28 19:11:33,009 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:11:33,009 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1922544703] [2020-10-28 19:11:33,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:11:33,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:11:33,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:33,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:33,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:33,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:33,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:33,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:33,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:33,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:33,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:34,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:34,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:34,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:35,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:38,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:11:38,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-28 19:11:38,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-28 19:11:38,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5052 [2020-10-28 19:11:38,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:11:38,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:11:38,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:11:38,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 19:11:38,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-28 19:11:38,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:11:38,722 WARN L193 SmtUtils]: Spent 412.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 19:11:38,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:11:38,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:11:38,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:38,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:11:38,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:11:38,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:11:38,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 19:11:38,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:11:38,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:11:38,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:11:38,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:11:38,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:11:38,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:11:38,833 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 19:11:38,834 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1922544703] [2020-10-28 19:11:38,834 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:11:38,834 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:11:38,835 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224307646] [2020-10-28 19:11:38,836 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:11:38,837 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:11:38,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:11:38,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:11:38,843 INFO L87 Difference]: Start difference. First operand 947 states and 1430 transitions. Second operand 5 states. [2020-10-28 19:11:41,276 WARN L193 SmtUtils]: Spent 384.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-28 19:11:42,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:11:42,406 INFO L93 Difference]: Finished difference Result 2763 states and 4165 transitions. [2020-10-28 19:11:42,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 19:11:42,407 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 152 [2020-10-28 19:11:42,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:11:42,420 INFO L225 Difference]: With dead ends: 2763 [2020-10-28 19:11:42,420 INFO L226 Difference]: Without dead ends: 1829 [2020-10-28 19:11:42,426 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 19:11:42,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1829 states. [2020-10-28 19:11:42,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1829 to 1826. [2020-10-28 19:11:42,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1826 states. [2020-10-28 19:11:42,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1826 states to 1826 states and 2731 transitions. [2020-10-28 19:11:42,545 INFO L78 Accepts]: Start accepts. Automaton has 1826 states and 2731 transitions. Word has length 152 [2020-10-28 19:11:42,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:11:42,546 INFO L481 AbstractCegarLoop]: Abstraction has 1826 states and 2731 transitions. [2020-10-28 19:11:42,546 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:11:42,546 INFO L276 IsEmpty]: Start isEmpty. Operand 1826 states and 2731 transitions. [2020-10-28 19:11:42,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-10-28 19:11:42,550 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:11:42,551 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] [2020-10-28 19:11:42,551 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 19:11:42,551 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:11:42,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:11:42,552 INFO L82 PathProgramCache]: Analyzing trace with hash 1023547448, now seen corresponding path program 1 times [2020-10-28 19:11:42,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:11:42,552 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1874962266] [2020-10-28 19:11:42,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:11:42,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:11:42,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:42,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:42,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:42,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:42,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:43,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:43,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:43,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:43,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:44,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:44,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:45,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:45,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:47,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:11:47,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-28 19:11:47,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-28 19:11:47,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-28 19:11:47,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:11:47,594 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:11:47,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:11:47,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 19:11:47,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-28 19:11:47,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:11:48,073 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 19:11:48,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:11:48,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:11:48,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:48,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:11:48,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:11:48,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:11:48,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 19:11:48,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:11:48,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:11:48,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:11:48,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:11:48,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:11:48,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:11:48,214 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 19:11:48,215 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1874962266] [2020-10-28 19:11:48,215 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:11:48,215 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:11:48,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229257214] [2020-10-28 19:11:48,216 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:11:48,216 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:11:48,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:11:48,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:11:48,217 INFO L87 Difference]: Start difference. First operand 1826 states and 2731 transitions. Second operand 5 states. [2020-10-28 19:11:50,383 WARN L193 SmtUtils]: Spent 400.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-28 19:11:51,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:11:51,509 INFO L93 Difference]: Finished difference Result 5310 states and 7917 transitions. [2020-10-28 19:11:51,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 19:11:51,511 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 153 [2020-10-28 19:11:51,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:11:51,530 INFO L225 Difference]: With dead ends: 5310 [2020-10-28 19:11:51,530 INFO L226 Difference]: Without dead ends: 3524 [2020-10-28 19:11:51,535 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 19:11:51,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3524 states. [2020-10-28 19:11:51,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3524 to 3521. [2020-10-28 19:11:51,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3521 states. [2020-10-28 19:11:51,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3521 states to 3521 states and 5207 transitions. [2020-10-28 19:11:51,744 INFO L78 Accepts]: Start accepts. Automaton has 3521 states and 5207 transitions. Word has length 153 [2020-10-28 19:11:51,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:11:51,745 INFO L481 AbstractCegarLoop]: Abstraction has 3521 states and 5207 transitions. [2020-10-28 19:11:51,745 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:11:51,745 INFO L276 IsEmpty]: Start isEmpty. Operand 3521 states and 5207 transitions. [2020-10-28 19:11:51,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-28 19:11:51,751 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:11:51,751 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] [2020-10-28 19:11:51,752 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 19:11:51,752 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:11:51,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:11:51,753 INFO L82 PathProgramCache]: Analyzing trace with hash -1780707126, now seen corresponding path program 1 times [2020-10-28 19:11:51,753 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:11:51,753 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [442547152] [2020-10-28 19:11:51,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:11:51,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:11:51,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:51,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:51,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:51,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:52,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:52,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:52,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:52,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:52,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:52,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:52,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:55,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:55,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:55,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:56,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:56,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:56,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:11:56,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-28 19:11:56,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-28 19:11:56,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-28 19:11:56,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:11:56,803 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:11:56,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:11:56,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 19:11:56,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-28 19:11:56,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 19:11:57,355 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 19:11:57,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:11:57,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:11:57,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:57,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:11:57,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:11:57,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:11:57,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 19:11:57,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:11:57,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:11:57,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:11:57,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:11:57,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:11:57,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:11:57,502 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 19:11:57,503 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [442547152] [2020-10-28 19:11:57,503 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:11:57,503 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:11:57,503 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535073305] [2020-10-28 19:11:57,504 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:11:57,504 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:11:57,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:11:57,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:11:57,505 INFO L87 Difference]: Start difference. First operand 3521 states and 5207 transitions. Second operand 5 states. [2020-10-28 19:12:00,018 WARN L193 SmtUtils]: Spent 394.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-28 19:12:01,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:12:01,311 INFO L93 Difference]: Finished difference Result 9977 states and 14745 transitions. [2020-10-28 19:12:01,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 19:12:01,312 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 154 [2020-10-28 19:12:01,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:12:01,346 INFO L225 Difference]: With dead ends: 9977 [2020-10-28 19:12:01,346 INFO L226 Difference]: Without dead ends: 6784 [2020-10-28 19:12:01,353 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 19:12:01,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6784 states. [2020-10-28 19:12:01,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6784 to 6781. [2020-10-28 19:12:01,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6781 states. [2020-10-28 19:12:01,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6781 states to 6781 states and 9907 transitions. [2020-10-28 19:12:01,745 INFO L78 Accepts]: Start accepts. Automaton has 6781 states and 9907 transitions. Word has length 154 [2020-10-28 19:12:01,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:12:01,746 INFO L481 AbstractCegarLoop]: Abstraction has 6781 states and 9907 transitions. [2020-10-28 19:12:01,746 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:12:01,746 INFO L276 IsEmpty]: Start isEmpty. Operand 6781 states and 9907 transitions. [2020-10-28 19:12:01,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-10-28 19:12:01,758 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:12:01,758 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] [2020-10-28 19:12:01,758 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 19:12:01,758 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:12:01,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:12:01,759 INFO L82 PathProgramCache]: Analyzing trace with hash -176073447, now seen corresponding path program 1 times [2020-10-28 19:12:01,759 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:12:01,760 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1298465726] [2020-10-28 19:12:01,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:12:01,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:12:01,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:01,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:01,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:02,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:02,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:02,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:02,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:03,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:03,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:03,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:04,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:06,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:06,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:12:06,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-28 19:12:06,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 19:12:06,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-28 19:12:06,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:12:06,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:12:06,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:12:06,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 19:12:06,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-28 19:12:06,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 38 [2020-10-28 19:12:07,346 WARN L193 SmtUtils]: Spent 372.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 19:12:07,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:12:07,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:12:07,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:07,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:12:07,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:12:07,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:12:07,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 19:12:07,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:12:07,367 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:12:07,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:12:07,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:12:07,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:12:07,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:12:07,461 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 19:12:07,462 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1298465726] [2020-10-28 19:12:07,462 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:12:07,462 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:12:07,463 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159598405] [2020-10-28 19:12:07,463 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:12:07,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:12:07,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:12:07,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:12:07,464 INFO L87 Difference]: Start difference. First operand 6781 states and 9907 transitions. Second operand 5 states. [2020-10-28 19:12:10,346 WARN L193 SmtUtils]: Spent 436.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-28 19:12:11,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:12:11,723 INFO L93 Difference]: Finished difference Result 19751 states and 28726 transitions. [2020-10-28 19:12:11,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 19:12:11,725 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 155 [2020-10-28 19:12:11,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:12:11,786 INFO L225 Difference]: With dead ends: 19751 [2020-10-28 19:12:11,786 INFO L226 Difference]: Without dead ends: 13038 [2020-10-28 19:12:11,810 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 19:12:11,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13038 states. [2020-10-28 19:12:12,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13038 to 13035. [2020-10-28 19:12:12,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13035 states. [2020-10-28 19:12:12,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13035 states to 13035 states and 18771 transitions. [2020-10-28 19:12:12,646 INFO L78 Accepts]: Start accepts. Automaton has 13035 states and 18771 transitions. Word has length 155 [2020-10-28 19:12:12,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:12:12,646 INFO L481 AbstractCegarLoop]: Abstraction has 13035 states and 18771 transitions. [2020-10-28 19:12:12,647 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:12:12,647 INFO L276 IsEmpty]: Start isEmpty. Operand 13035 states and 18771 transitions. [2020-10-28 19:12:12,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-10-28 19:12:12,666 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:12:12,666 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] [2020-10-28 19:12:12,666 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 19:12:12,667 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:12:12,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:12:12,667 INFO L82 PathProgramCache]: Analyzing trace with hash -598777689, now seen corresponding path program 1 times [2020-10-28 19:12:12,667 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:12:12,668 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [364142674] [2020-10-28 19:12:12,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:12:12,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:12:12,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:12,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:12,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:13,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:13,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:13,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:13,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:13,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:15,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:12:15,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-28 19:12:15,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 19:12:15,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2566 [2020-10-28 19:12:15,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:12:15,291 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:12:15,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:12:15,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 19:12:15,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-28 19:12:15,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:12:15,795 WARN L193 SmtUtils]: Spent 379.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 19:12:15,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:12:15,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:12:15,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:15,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:12:15,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:12:15,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:12:15,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-28 19:12:15,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:12:15,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:12:15,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:12:15,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:12:15,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:12:15,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:12:15,950 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 19:12:15,950 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [364142674] [2020-10-28 19:12:15,951 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:12:15,951 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:12:15,951 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451136515] [2020-10-28 19:12:15,951 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:12:15,952 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:12:15,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:12:15,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:12:15,952 INFO L87 Difference]: Start difference. First operand 13035 states and 18771 transitions. Second operand 5 states. [2020-10-28 19:12:19,092 WARN L193 SmtUtils]: Spent 406.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-28 19:12:20,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:12:20,687 INFO L93 Difference]: Finished difference Result 34624 states and 49738 transitions. [2020-10-28 19:12:20,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 19:12:20,688 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 156 [2020-10-28 19:12:20,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:12:20,739 INFO L225 Difference]: With dead ends: 34624 [2020-10-28 19:12:20,739 INFO L226 Difference]: Without dead ends: 22589 [2020-10-28 19:12:20,764 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 19:12:20,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22589 states. [2020-10-28 19:12:22,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22589 to 22586. [2020-10-28 19:12:22,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22586 states. [2020-10-28 19:12:22,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22586 states to 22586 states and 31942 transitions. [2020-10-28 19:12:22,395 INFO L78 Accepts]: Start accepts. Automaton has 22586 states and 31942 transitions. Word has length 156 [2020-10-28 19:12:22,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:12:22,395 INFO L481 AbstractCegarLoop]: Abstraction has 22586 states and 31942 transitions. [2020-10-28 19:12:22,395 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:12:22,395 INFO L276 IsEmpty]: Start isEmpty. Operand 22586 states and 31942 transitions. [2020-10-28 19:12:22,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-10-28 19:12:22,430 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:12:22,431 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] [2020-10-28 19:12:22,431 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 19:12:22,431 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:12:22,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:12:22,431 INFO L82 PathProgramCache]: Analyzing trace with hash -538257765, now seen corresponding path program 1 times [2020-10-28 19:12:22,432 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:12:22,432 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1126417892] [2020-10-28 19:12:22,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:12:22,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:12:22,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:22,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:22,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:22,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:22,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:23,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:12:23,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-28 19:12:23,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 19:12:23,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 918 [2020-10-28 19:12:23,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:12:23,373 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:12:23,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:12:23,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 19:12:23,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-28 19:12:23,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:12:23,847 WARN L193 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 19:12:23,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:12:23,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:12:23,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:23,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:12:23,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:12:23,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:12:23,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-28 19:12:23,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:12:23,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:12:23,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:12:23,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:12:23,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:12:23,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 19:12:24,050 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 19:12:24,051 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1126417892] [2020-10-28 19:12:24,051 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:12:24,051 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:12:24,057 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183440414] [2020-10-28 19:12:24,058 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:12:24,058 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:12:24,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:12:24,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:12:24,060 INFO L87 Difference]: Start difference. First operand 22586 states and 31942 transitions. Second operand 5 states. [2020-10-28 19:12:27,345 WARN L193 SmtUtils]: Spent 406.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-28 19:12:29,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:12:29,578 INFO L93 Difference]: Finished difference Result 61274 states and 86183 transitions. [2020-10-28 19:12:29,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 19:12:29,578 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 157 [2020-10-28 19:12:29,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:12:29,681 INFO L225 Difference]: With dead ends: 61274 [2020-10-28 19:12:29,681 INFO L226 Difference]: Without dead ends: 39034 [2020-10-28 19:12:29,729 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 19:12:29,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39034 states. [2020-10-28 19:12:32,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39034 to 39031. [2020-10-28 19:12:32,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39031 states. [2020-10-28 19:12:32,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39031 states to 39031 states and 54190 transitions. [2020-10-28 19:12:32,291 INFO L78 Accepts]: Start accepts. Automaton has 39031 states and 54190 transitions. Word has length 157 [2020-10-28 19:12:32,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:12:32,292 INFO L481 AbstractCegarLoop]: Abstraction has 39031 states and 54190 transitions. [2020-10-28 19:12:32,292 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:12:32,292 INFO L276 IsEmpty]: Start isEmpty. Operand 39031 states and 54190 transitions. [2020-10-28 19:12:32,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-28 19:12:32,340 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:12:32,341 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] [2020-10-28 19:12:32,341 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 19:12:32,341 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:12:32,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:12:32,342 INFO L82 PathProgramCache]: Analyzing trace with hash -2038764280, now seen corresponding path program 1 times [2020-10-28 19:12:32,342 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:12:32,342 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1862728145] [2020-10-28 19:12:32,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:12:32,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-28 19:12:32,393 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-28 19:12:32,394 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-28 19:12:32,399 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 19:12:32,452 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 07:12:32 BoogieIcfgContainer [2020-10-28 19:12:32,453 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-28 19:12:32,454 INFO L168 Benchmark]: Toolchain (without parser) took 79043.34 ms. Allocated memory was 151.0 MB in the beginning and 1.9 GB in the end (delta: 1.8 GB). Free memory was 124.2 MB in the beginning and 1.1 GB in the end (delta: -1.0 GB). Peak memory consumption was 753.6 MB. Max. memory is 8.0 GB. [2020-10-28 19:12:32,455 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 151.0 MB. Free memory is still 123.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 19:12:32,456 INFO L168 Benchmark]: CACSL2BoogieTranslator took 986.98 ms. Allocated memory is still 151.0 MB. Free memory was 123.4 MB in the beginning and 95.6 MB in the end (delta: 27.8 MB). Peak memory consumption was 28.3 MB. Max. memory is 8.0 GB. [2020-10-28 19:12:32,457 INFO L168 Benchmark]: Boogie Preprocessor took 169.98 ms. Allocated memory is still 151.0 MB. Free memory was 95.4 MB in the beginning and 129.3 MB in the end (delta: -33.9 MB). Peak memory consumption was 5.6 MB. Max. memory is 8.0 GB. [2020-10-28 19:12:32,457 INFO L168 Benchmark]: RCFGBuilder took 1481.10 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 128.8 MB in the beginning and 105.1 MB in the end (delta: 23.6 MB). Peak memory consumption was 83.9 MB. Max. memory is 8.0 GB. [2020-10-28 19:12:32,458 INFO L168 Benchmark]: TraceAbstraction took 76391.54 ms. Allocated memory was 181.4 MB in the beginning and 1.9 GB in the end (delta: 1.7 GB). Free memory was 104.6 MB in the beginning and 1.1 GB in the end (delta: -1.0 GB). Peak memory consumption was 702.8 MB. Max. memory is 8.0 GB. [2020-10-28 19:12:32,461 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 151.0 MB. Free memory is still 123.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 986.98 ms. Allocated memory is still 151.0 MB. Free memory was 123.4 MB in the beginning and 95.6 MB in the end (delta: 27.8 MB). Peak memory consumption was 28.3 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 169.98 ms. Allocated memory is still 151.0 MB. Free memory was 95.4 MB in the beginning and 129.3 MB in the end (delta: -33.9 MB). Peak memory consumption was 5.6 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1481.10 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 128.8 MB in the beginning and 105.1 MB in the end (delta: 23.6 MB). Peak memory consumption was 83.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 76391.54 ms. Allocated memory was 181.4 MB in the beginning and 1.9 GB in the end (delta: 1.7 GB). Free memory was 104.6 MB in the beginning and 1.1 GB in the end (delta: -1.0 GB). Peak memory consumption was 702.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 4]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L1] int __return_main; [L16] msg_t nomsg = (msg_t )-1; [L17] port_t p12 = 0; [L18] char p12_old = '\x0'; [L19] char p12_new = '\x0'; [L20] _Bool ep12 = 0; [L21] port_t p13 = 0; [L22] char p13_old = '\x0'; [L23] char p13_new = '\x0'; [L24] _Bool ep13 = 0; [L25] port_t p21 = 0; [L26] char p21_old = '\x0'; [L27] char p21_new = '\x0'; [L28] _Bool ep21 = 0; [L29] port_t p23 = 0; [L30] char p23_old = '\x0'; [L31] char p23_new = '\x0'; [L32] _Bool ep23 = 0; [L33] port_t p31 = 0; [L34] char p31_old = '\x0'; [L35] char p31_new = '\x0'; [L36] _Bool ep31 = 0; [L37] port_t p32 = 0; [L38] char p32_old = '\x0'; [L39] char p32_new = '\x0'; [L40] _Bool ep32 = 0; [L41] char id1 = '\x0'; [L42] char r1 = '\x0'; [L43] char st1 = '\x0'; [L44] char nl1 = '\x0'; [L45] char m1 = '\x0'; [L46] char max1 = '\x0'; [L47] _Bool mode1 = 0; [L48] _Bool newmax1 = 0; [L49] char id2 = '\x0'; [L50] char r2 = '\x0'; [L51] char st2 = '\x0'; [L52] char nl2 = '\x0'; [L53] char m2 = '\x0'; [L54] char max2 = '\x0'; [L55] _Bool mode2 = 0; [L56] _Bool newmax2 = 0; [L57] char id3 = '\x0'; [L58] char r3 = '\x0'; [L59] char st3 = '\x0'; [L60] char nl3 = '\x0'; [L61] char m3 = '\x0'; [L62] char max3 = '\x0'; [L63] _Bool mode3 = 0; [L64] _Bool newmax3 = 0; [L68] void (*nodes[3])() = { &node1, &node2, &node3 }; [L72] int __return_1863; [L73] int __return_2009; [L74] int __return_2142; [L75] int __return_2281; [L76] int __return_2419; [L77] int __tmp_2420_0; [L78] int __return_2543; [L79] int __return_2433; [L82] int main__c1; [L83] int main__i2; [L84] main__c1 = 0 [L85] ep12 = __VERIFIER_nondet_bool() [L86] ep13 = __VERIFIER_nondet_bool() [L87] ep21 = __VERIFIER_nondet_bool() [L88] ep23 = __VERIFIER_nondet_bool() [L89] ep31 = __VERIFIER_nondet_bool() [L90] ep32 = __VERIFIER_nondet_bool() [L91] id1 = __VERIFIER_nondet_char() [L92] r1 = __VERIFIER_nondet_char() [L93] st1 = __VERIFIER_nondet_char() [L94] nl1 = __VERIFIER_nondet_char() [L95] m1 = __VERIFIER_nondet_char() [L96] max1 = __VERIFIER_nondet_char() [L97] mode1 = __VERIFIER_nondet_bool() [L98] newmax1 = __VERIFIER_nondet_bool() [L99] id2 = __VERIFIER_nondet_char() [L100] r2 = __VERIFIER_nondet_char() [L101] st2 = __VERIFIER_nondet_char() [L102] nl2 = __VERIFIER_nondet_char() [L103] m2 = __VERIFIER_nondet_char() [L104] max2 = __VERIFIER_nondet_char() [L105] mode2 = __VERIFIER_nondet_bool() [L106] newmax2 = __VERIFIER_nondet_bool() [L107] id3 = __VERIFIER_nondet_char() [L108] r3 = __VERIFIER_nondet_char() [L109] st3 = __VERIFIER_nondet_char() [L110] nl3 = __VERIFIER_nondet_char() [L111] m3 = __VERIFIER_nondet_char() [L112] max3 = __VERIFIER_nondet_char() [L113] mode3 = __VERIFIER_nondet_bool() [L114] newmax3 = __VERIFIER_nondet_bool() [L116] _Bool init__r121; [L117] _Bool init__r131; [L118] _Bool init__r211; [L119] _Bool init__r231; [L120] _Bool init__r311; [L121] _Bool init__r321; [L122] _Bool init__r122; [L123] int init__tmp; [L124] _Bool init__r132; [L125] int init__tmp___0; [L126] _Bool init__r212; [L127] int init__tmp___1; [L128] _Bool init__r232; [L129] int init__tmp___2; [L130] _Bool init__r312; [L131] int init__tmp___3; [L132] _Bool init__r322; [L133] int init__tmp___4; [L134] int init__tmp___5; [L135] init__r121 = ep12 [L136] init__r131 = ep13 [L137] init__r211 = ep21 [L138] init__r231 = ep23 [L139] init__r311 = ep31 [L140] init__r321 = ep32 [L141] COND FALSE !(!(init__r121 == 0)) [L2435] COND FALSE !(!(init__r131 == 0)) [L2451] init__tmp = 0 [L145] init__r122 = (_Bool)init__tmp [L146] COND FALSE !(!(init__r131 == 0)) [L2412] COND FALSE !(!(init__r121 == 0)) [L2428] init__tmp___0 = 0 [L150] init__r132 = (_Bool)init__tmp___0 [L151] COND FALSE !(!(init__r211 == 0)) [L2389] COND FALSE !(!(init__r231 == 0)) [L2405] init__tmp___1 = 0 [L155] init__r212 = (_Bool)init__tmp___1 [L156] COND FALSE !(!(init__r231 == 0)) [L2366] COND FALSE !(!(init__r211 == 0)) [L2382] init__tmp___2 = 0 [L160] init__r232 = (_Bool)init__tmp___2 [L161] COND FALSE !(!(init__r311 == 0)) [L2343] COND FALSE !(!(init__r321 == 0)) [L2359] init__tmp___3 = 0 [L165] init__r312 = (_Bool)init__tmp___3 [L166] COND FALSE !(!(init__r321 == 0)) [L2320] COND FALSE !(!(init__r311 == 0)) [L2336] init__tmp___4 = 0 [L170] init__r322 = (_Bool)init__tmp___4 [L171] COND TRUE ((int)id1) != ((int)id2) [L173] COND TRUE ((int)id1) != ((int)id3) [L175] COND TRUE ((int)id2) != ((int)id3) [L177] COND TRUE ((int)id1) >= 0 [L179] COND TRUE ((int)id2) >= 0 [L181] COND TRUE ((int)id3) >= 0 [L183] COND TRUE ((int)r1) == 0 [L185] COND TRUE ((int)r2) == 0 [L187] COND TRUE ((int)r3) == 0 [L189] COND TRUE ((int)max1) == ((int)id1) [L191] COND TRUE ((int)max2) == ((int)id2) [L193] COND TRUE ((int)max3) == ((int)id3) [L195] COND TRUE ((int)st1) == 0 [L197] COND TRUE ((int)st2) == 0 [L199] COND TRUE ((int)st3) == 0 [L201] COND TRUE ((int)nl1) == 0 [L203] COND TRUE ((int)nl2) == 0 [L205] COND TRUE ((int)nl3) == 0 [L207] COND TRUE ((int)mode1) == 0 [L209] COND TRUE ((int)mode2) == 0 [L211] COND TRUE ((int)mode3) == 0 [L213] COND TRUE !(newmax1 == 0) [L215] COND TRUE !(newmax2 == 0) [L217] COND TRUE !(newmax3 == 0) [L219] init__tmp___5 = 1 [L220] __return_1863 = init__tmp___5 [L221] main__i2 = __return_1863 [L222] COND TRUE main__i2 != 0 [L224] p12_old = nomsg [L225] p12_new = nomsg [L226] p13_old = nomsg [L227] p13_new = nomsg [L228] p21_old = nomsg [L229] p21_new = nomsg [L230] p23_old = nomsg [L231] p23_new = nomsg [L232] p31_old = nomsg [L233] p31_new = nomsg [L234] p32_old = nomsg [L235] p32_new = nomsg [L236] main__i2 = 0 [L237] COND TRUE main__i2 < 6 [L240] _Bool node1__newmax; [L241] node1__newmax = 0 [L242] COND FALSE !(!(mode1 == 0)) [L248] COND TRUE ((int)r1) < 2 [L250] COND FALSE !(!(ep12 == 0)) [L263] COND FALSE !(!(ep13 == 0)) [L276] mode1 = 1 [L278] _Bool node2__newmax; [L279] node2__newmax = 0 [L280] COND FALSE !(!(mode2 == 0)) [L286] COND TRUE ((int)r2) < 2 [L288] COND FALSE !(!(ep21 == 0)) [L301] COND FALSE !(!(ep23 == 0)) [L314] mode2 = 1 [L316] _Bool node3__newmax; [L317] node3__newmax = 0 [L318] COND FALSE !(!(mode3 == 0)) [L324] COND TRUE ((int)r3) < 2 [L326] COND FALSE !(!(ep31 == 0)) [L339] COND FALSE !(!(ep32 == 0)) [L352] mode3 = 1 [L353] p12_old = p12_new [L354] p12_new = nomsg [L355] p13_old = p13_new [L356] p13_new = nomsg [L357] p21_old = p21_new [L358] p21_new = nomsg [L359] p23_old = p23_new [L360] p23_new = nomsg [L361] p31_old = p31_new [L362] p31_new = nomsg [L363] p32_old = p32_new [L364] p32_new = nomsg [L366] int check__tmp; [L367] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L369] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L371] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L373] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L375] COND FALSE !(((int)r1) >= 2) [L381] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L383] COND TRUE ((int)r1) < 2 [L385] COND FALSE !(((int)r1) >= 2) [L391] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L393] COND TRUE ((int)r1) < 2 [L395] check__tmp = 1 [L396] __return_2009 = check__tmp [L397] main__c1 = __return_2009 [L399] _Bool __tmp_1; [L400] __tmp_1 = main__c1 [L401] _Bool assert__arg; [L402] assert__arg = __tmp_1 [L403] COND FALSE !(assert__arg == 0) [L409] int main____CPAchecker_TMP_0 = main__i2; [L410] main__i2 = main__i2 + 1 [L411] COND TRUE main__i2 < 6 [L414] _Bool node1__newmax; [L415] node1__newmax = 0 [L416] COND TRUE !(mode1 == 0) [L418] r1 = (char)(((int)r1) + 1) [L419] COND FALSE !(!(ep21 == 0)) [L428] COND FALSE !(!(ep31 == 0)) [L437] newmax1 = node1__newmax [L438] COND FALSE !(((int)r1) == 2) [L444] mode1 = 0 [L446] _Bool node2__newmax; [L447] node2__newmax = 0 [L448] COND TRUE !(mode2 == 0) [L450] r2 = (char)(((int)r2) + 1) [L451] COND FALSE !(!(ep12 == 0)) [L460] COND FALSE !(!(ep32 == 0)) [L469] newmax2 = node2__newmax [L470] COND FALSE !(((int)r2) == 2) [L476] mode2 = 0 [L478] _Bool node3__newmax; [L479] node3__newmax = 0 [L480] COND TRUE !(mode3 == 0) [L482] r3 = (char)(((int)r3) + 1) [L483] COND FALSE !(!(ep13 == 0)) [L492] COND FALSE !(!(ep23 == 0)) [L501] newmax3 = node3__newmax [L502] COND FALSE !(((int)r3) == 2) [L508] mode3 = 0 [L509] p12_old = p12_new [L510] p12_new = nomsg [L511] p13_old = p13_new [L512] p13_new = nomsg [L513] p21_old = p21_new [L514] p21_new = nomsg [L515] p23_old = p23_new [L516] p23_new = nomsg [L517] p31_old = p31_new [L518] p31_new = nomsg [L519] p32_old = p32_new [L520] p32_new = nomsg [L522] int check__tmp; [L523] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L525] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L527] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L529] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L531] COND FALSE !(((int)r1) >= 2) [L537] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L539] COND TRUE ((int)r1) < 2 [L541] COND FALSE !(((int)r1) >= 2) [L547] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L549] COND TRUE ((int)r1) < 2 [L551] check__tmp = 1 [L552] __return_2142 = check__tmp [L553] main__c1 = __return_2142 [L555] _Bool __tmp_2; [L556] __tmp_2 = main__c1 [L557] _Bool assert__arg; [L558] assert__arg = __tmp_2 [L559] COND FALSE !(assert__arg == 0) [L565] int main____CPAchecker_TMP_0 = main__i2; [L566] main__i2 = main__i2 + 1 [L567] COND TRUE main__i2 < 6 [L570] _Bool node1__newmax; [L571] node1__newmax = 0 [L572] COND FALSE !(!(mode1 == 0)) [L578] COND TRUE ((int)r1) < 2 [L580] COND FALSE !(!(ep12 == 0)) [L593] COND FALSE !(!(ep13 == 0)) [L606] mode1 = 1 [L608] _Bool node2__newmax; [L609] node2__newmax = 0 [L610] COND FALSE !(!(mode2 == 0)) [L616] COND TRUE ((int)r2) < 2 [L618] COND FALSE !(!(ep21 == 0)) [L631] COND FALSE !(!(ep23 == 0)) [L644] mode2 = 1 [L646] _Bool node3__newmax; [L647] node3__newmax = 0 [L648] COND FALSE !(!(mode3 == 0)) [L654] COND TRUE ((int)r3) < 2 [L656] COND FALSE !(!(ep31 == 0)) [L669] COND FALSE !(!(ep32 == 0)) [L682] mode3 = 1 [L683] p12_old = p12_new [L684] p12_new = nomsg [L685] p13_old = p13_new [L686] p13_new = nomsg [L687] p21_old = p21_new [L688] p21_new = nomsg [L689] p23_old = p23_new [L690] p23_new = nomsg [L691] p31_old = p31_new [L692] p31_new = nomsg [L693] p32_old = p32_new [L694] p32_new = nomsg [L696] int check__tmp; [L697] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L699] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L701] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L703] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L705] COND FALSE !(((int)r1) >= 2) [L711] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L713] COND TRUE ((int)r1) < 2 [L715] COND FALSE !(((int)r1) >= 2) [L721] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L723] COND TRUE ((int)r1) < 2 [L725] check__tmp = 1 [L726] __return_2281 = check__tmp [L727] main__c1 = __return_2281 [L729] _Bool __tmp_3; [L730] __tmp_3 = main__c1 [L731] _Bool assert__arg; [L732] assert__arg = __tmp_3 [L733] COND FALSE !(assert__arg == 0) [L739] int main____CPAchecker_TMP_0 = main__i2; [L740] main__i2 = main__i2 + 1 [L741] COND TRUE main__i2 < 6 [L744] _Bool node1__newmax; [L745] node1__newmax = 0 [L746] COND TRUE !(mode1 == 0) [L748] r1 = (char)(((int)r1) + 1) [L749] COND FALSE !(!(ep21 == 0)) [L758] COND FALSE !(!(ep31 == 0)) [L767] newmax1 = node1__newmax [L768] COND TRUE ((int)r1) == 2 [L770] COND TRUE ((int)max1) == ((int)id1) [L772] st1 = 1 [L774] mode1 = 0 [L776] _Bool node2__newmax; [L777] node2__newmax = 0 [L778] COND TRUE !(mode2 == 0) [L780] r2 = (char)(((int)r2) + 1) [L781] COND FALSE !(!(ep12 == 0)) [L790] COND FALSE !(!(ep32 == 0)) [L799] newmax2 = node2__newmax [L800] COND TRUE ((int)r2) == 2 [L802] COND TRUE ((int)max2) == ((int)id2) [L804] st2 = 1 [L806] mode2 = 0 [L808] _Bool node3__newmax; [L809] node3__newmax = 0 [L810] COND TRUE !(mode3 == 0) [L812] r3 = (char)(((int)r3) + 1) [L813] COND FALSE !(!(ep13 == 0)) [L822] COND FALSE !(!(ep23 == 0)) [L831] newmax3 = node3__newmax [L832] COND TRUE ((int)r3) == 2 [L834] COND TRUE ((int)max3) == ((int)id3) [L836] st3 = 1 [L838] mode3 = 0 [L839] p12_old = p12_new [L840] p12_new = nomsg [L841] p13_old = p13_new [L842] p13_new = nomsg [L843] p21_old = p21_new [L844] p21_new = nomsg [L845] p23_old = p23_new [L846] p23_new = nomsg [L847] p31_old = p31_new [L848] p31_new = nomsg [L849] p32_old = p32_new [L850] p32_new = nomsg [L852] int check__tmp; [L853] COND FALSE !(((((int)st1) + ((int)st2)) + ((int)st3)) <= 1) [L1535] check__tmp = 0 [L881] __return_2419 = check__tmp [L882] main__c1 = __return_2419 [L883] __tmp_2420_0 = main____CPAchecker_TMP_0 [L885] main____CPAchecker_TMP_0 = __tmp_2420_0 [L887] _Bool __tmp_4; [L888] __tmp_4 = main__c1 [L889] _Bool assert__arg; [L890] assert__arg = __tmp_4 [L891] COND TRUE assert__arg == 0 [L893] CALL reach_error() [L4] __assert_fail("0", "pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c", 4, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 344 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 76.2s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 30.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 5920 SDtfs, 6202 SDslu, 3413 SDs, 0 SdLazy, 6467 SolverSat, 117 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 17.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 62 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 6.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39031occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 5.9s AutomataMinimizationTime, 8 MinimizatonAttempts, 24 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 38.2s InterpolantComputationTime, 1389 NumberOfCodeBlocks, 1389 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 1223 ConstructedInterpolants, 0 QuantifiedInterpolants, 1427239 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...