/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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/eca-rers2012/Problem05_label59.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 05:34:01,778 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 05:34:01,781 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 05:34:01,817 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 05:34:01,818 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 05:34:01,819 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 05:34:01,821 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 05:34:01,824 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 05:34:01,826 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 05:34:01,827 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 05:34:01,829 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 05:34:01,830 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 05:34:01,831 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 05:34:01,832 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 05:34:01,833 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 05:34:01,835 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 05:34:01,836 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 05:34:01,837 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 05:34:01,849 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 05:34:01,853 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 05:34:01,856 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 05:34:01,858 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 05:34:01,860 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 05:34:01,861 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 05:34:01,864 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 05:34:01,865 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 05:34:01,865 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 05:34:01,866 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 05:34:01,867 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 05:34:01,868 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 05:34:01,868 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 05:34:01,869 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 05:34:01,870 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 05:34:01,871 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 05:34:01,872 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 05:34:01,873 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 05:34:01,873 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 05:34:01,874 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 05:34:01,874 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 05:34:01,875 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 05:34:01,876 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 05:34:01,877 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 [2020-10-29 05:34:01,905 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 05:34:01,906 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 05:34:01,907 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 05:34:01,907 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 05:34:01,907 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 05:34:01,908 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 05:34:01,908 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 05:34:01,908 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 05:34:01,908 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 05:34:01,909 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 05:34:01,909 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 05:34:01,909 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 05:34:01,909 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 05:34:01,909 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 05:34:01,909 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 05:34:01,910 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 05:34:01,910 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 05:34:01,910 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 05:34:01,910 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 05:34:01,910 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 05:34:01,911 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 05:34:01,911 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 05:34:01,911 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 05:34:01,911 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 05:34:01,912 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 05:34:01,912 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 05:34:01,912 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 05:34:01,912 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 05:34:01,912 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 05:34:01,912 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 05:34:02,302 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 05:34:02,334 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 05:34:02,338 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 05:34:02,340 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 05:34:02,341 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 05:34:02,343 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label59.c [2020-10-29 05:34:02,448 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8781f8577/15e78c75f6f1435680e6958f528814db/FLAG0319c23e8 [2020-10-29 05:34:03,898 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 05:34:03,898 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem05_label59.c [2020-10-29 05:34:03,942 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8781f8577/15e78c75f6f1435680e6958f528814db/FLAG0319c23e8 [2020-10-29 05:34:04,061 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8781f8577/15e78c75f6f1435680e6958f528814db [2020-10-29 05:34:04,065 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 05:34:04,074 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 05:34:04,078 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 05:34:04,078 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 05:34:04,082 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 05:34:04,083 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:34:04" (1/1) ... [2020-10-29 05:34:04,089 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39c206df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:34:04, skipping insertion in model container [2020-10-29 05:34:04,089 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:34:04" (1/1) ... [2020-10-29 05:34:04,098 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 05:34:04,305 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 05:34:06,553 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 05:34:06,570 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 05:34:07,860 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 05:34:07,940 INFO L208 MainTranslator]: Completed translation [2020-10-29 05:34:07,941 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:34:07 WrapperNode [2020-10-29 05:34:07,941 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 05:34:07,943 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 05:34:07,943 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 05:34:07,944 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 05:34:07,959 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:34:07" (1/1) ... [2020-10-29 05:34:07,962 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:34:07" (1/1) ... [2020-10-29 05:34:08,065 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:34:07" (1/1) ... [2020-10-29 05:34:08,065 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:34:07" (1/1) ... [2020-10-29 05:34:08,242 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:34:07" (1/1) ... [2020-10-29 05:34:08,295 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:34:07" (1/1) ... [2020-10-29 05:34:08,455 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:34:07" (1/1) ... [2020-10-29 05:34:08,522 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 05:34:08,523 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 05:34:08,523 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 05:34:08,523 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 05:34:08,524 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:34:07" (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 [2020-10-29 05:34:08,602 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 05:34:08,602 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 05:34:08,602 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 05:34:08,602 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 05:34:08,603 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 05:34:08,603 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-29 05:34:08,603 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-29 05:34:08,603 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-29 05:34:08,603 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-29 05:34:08,603 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output7 [2020-10-29 05:34:08,604 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output8 [2020-10-29 05:34:08,604 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 05:34:08,604 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 05:34:08,604 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 05:34:08,604 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-29 05:34:08,605 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-29 05:34:08,605 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-29 05:34:08,605 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-29 05:34:08,605 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output7 [2020-10-29 05:34:08,605 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output8 [2020-10-29 05:34:08,605 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 05:34:08,606 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 05:34:08,606 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 05:34:08,606 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 05:34:08,606 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 05:34:08,606 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 05:34:08,606 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 05:34:08,606 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 05:34:08,607 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 05:34:08,607 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 05:34:08,607 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 05:34:08,607 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 05:34:08,607 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 05:34:18,622 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 05:34:18,623 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 05:34:18,631 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:34:18 BoogieIcfgContainer [2020-10-29 05:34:18,631 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 05:34:18,636 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 05:34:18,637 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 05:34:18,641 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 05:34:18,641 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:34:04" (1/3) ... [2020-10-29 05:34:18,642 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b2cbe6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:34:18, skipping insertion in model container [2020-10-29 05:34:18,642 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:34:07" (2/3) ... [2020-10-29 05:34:18,643 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b2cbe6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:34:18, skipping insertion in model container [2020-10-29 05:34:18,644 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:34:18" (3/3) ... [2020-10-29 05:34:18,645 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label59.c [2020-10-29 05:34:18,658 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 05:34:18,665 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 05:34:18,683 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 05:34:18,735 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 05:34:18,735 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 05:34:18,736 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 05:34:18,736 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 05:34:18,736 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 05:34:18,736 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 05:34:18,736 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 05:34:18,736 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 05:34:18,803 INFO L276 IsEmpty]: Start isEmpty. Operand 2226 states. [2020-10-29 05:34:18,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1681 [2020-10-29 05:34:18,951 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:34:18,954 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:34:18,954 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:34:18,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:34:18,965 INFO L82 PathProgramCache]: Analyzing trace with hash 30444871, now seen corresponding path program 1 times [2020-10-29 05:34:18,975 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:34:18,976 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1835783737] [2020-10-29 05:34:18,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:34:20,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:34:20,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:34:25,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:34:25,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1704 [2020-10-29 05:34:25,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:34:25,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-29 05:34:25,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:34:25,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:34:25,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 05:34:25,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 05:34:25,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1695 [2020-10-29 05:34:25,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 05:34:27,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:34:27,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:34:27,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:34:27,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:34:27,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:34:27,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:34:27,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-29 05:34:27,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:34:27,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:34:27,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:34:27,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:34:27,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 05:34:27,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:34:30,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:34:30,680 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1835783737] [2020-10-29 05:34:30,682 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 05:34:30,683 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 05:34:30,684 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760227020] [2020-10-29 05:34:30,694 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 05:34:30,695 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:34:30,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 05:34:30,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 05:34:30,714 INFO L87 Difference]: Start difference. First operand 2226 states. Second operand 4 states. [2020-10-29 05:34:54,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:34:54,053 INFO L93 Difference]: Finished difference Result 6365 states and 11965 transitions. [2020-10-29 05:34:54,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:34:54,056 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1680 [2020-10-29 05:34:54,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:34:54,107 INFO L225 Difference]: With dead ends: 6365 [2020-10-29 05:34:54,107 INFO L226 Difference]: Without dead ends: 4075 [2020-10-29 05:34:54,121 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:34:54,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4075 states. [2020-10-29 05:34:54,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4075 to 3987. [2020-10-29 05:34:54,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3987 states. [2020-10-29 05:34:54,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3987 states to 3987 states and 7373 transitions. [2020-10-29 05:34:54,386 INFO L78 Accepts]: Start accepts. Automaton has 3987 states and 7373 transitions. Word has length 1680 [2020-10-29 05:34:54,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:34:54,393 INFO L481 AbstractCegarLoop]: Abstraction has 3987 states and 7373 transitions. [2020-10-29 05:34:54,394 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 05:34:54,394 INFO L276 IsEmpty]: Start isEmpty. Operand 3987 states and 7373 transitions. [2020-10-29 05:34:54,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1691 [2020-10-29 05:34:54,533 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:34:54,534 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:34:54,535 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 05:34:54,537 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:34:54,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:34:54,539 INFO L82 PathProgramCache]: Analyzing trace with hash -440475833, now seen corresponding path program 1 times [2020-10-29 05:34:54,539 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:34:54,539 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1289013427] [2020-10-29 05:34:54,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:34:54,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:34:54,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:34:56,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:34:59,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:34:59,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1716 [2020-10-29 05:34:59,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:34:59,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 05:34:59,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:34:59,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:34:59,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 05:34:59,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 05:34:59,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1692 [2020-10-29 05:34:59,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 05:35:01,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:35:01,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:35:01,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:35:01,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:35:01,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:35:01,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:35:01,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 05:35:01,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:35:01,941 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:35:01,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:35:01,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:35:01,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:35:01,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:35:01,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:35:01,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:35:01,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:35:01,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:35:01,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 05:35:01,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:35:01,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-29 05:35:01,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:35:01,999 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:35:01,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:35:01,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:35:02,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 05:35:02,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:35:04,216 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:35:04,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1289013427] [2020-10-29 05:35:04,217 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:35:04,218 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 05:35:04,218 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171408344] [2020-10-29 05:35:04,222 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:35:04,222 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:35:04,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:35:04,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:35:04,224 INFO L87 Difference]: Start difference. First operand 3987 states and 7373 transitions. Second operand 5 states. [2020-10-29 05:35:28,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:35:28,448 INFO L93 Difference]: Finished difference Result 11577 states and 21655 transitions. [2020-10-29 05:35:28,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:35:28,451 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1690 [2020-10-29 05:35:28,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:35:28,496 INFO L225 Difference]: With dead ends: 11577 [2020-10-29 05:35:28,496 INFO L226 Difference]: Without dead ends: 7596 [2020-10-29 05:35:28,508 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:35:28,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7596 states. [2020-10-29 05:35:28,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7596 to 7586. [2020-10-29 05:35:28,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7586 states. [2020-10-29 05:35:28,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7586 states to 7586 states and 12131 transitions. [2020-10-29 05:35:28,719 INFO L78 Accepts]: Start accepts. Automaton has 7586 states and 12131 transitions. Word has length 1690 [2020-10-29 05:35:28,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:35:28,723 INFO L481 AbstractCegarLoop]: Abstraction has 7586 states and 12131 transitions. [2020-10-29 05:35:28,723 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:35:28,723 INFO L276 IsEmpty]: Start isEmpty. Operand 7586 states and 12131 transitions. [2020-10-29 05:35:28,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1696 [2020-10-29 05:35:28,770 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:35:28,772 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:35:28,772 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 05:35:28,772 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:35:28,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:35:28,773 INFO L82 PathProgramCache]: Analyzing trace with hash 235412592, now seen corresponding path program 1 times [2020-10-29 05:35:28,774 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:35:28,774 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [331736150] [2020-10-29 05:35:28,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:35:28,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:35:28,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:35:29,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:35:33,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:35:33,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1721 [2020-10-29 05:35:33,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:35:33,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-29 05:35:33,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:35:33,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:35:33,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-29 05:35:33,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-29 05:35:33,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1294 [2020-10-29 05:35:33,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:35:37,574 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 34 [2020-10-29 05:35:38,806 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 39 [2020-10-29 05:35:39,006 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 40 [2020-10-29 05:35:39,195 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 36 [2020-10-29 05:35:39,373 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 36 [2020-10-29 05:35:39,575 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 36 [2020-10-29 05:35:39,758 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 32 [2020-10-29 05:35:39,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:35:39,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:35:39,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:35:39,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:35:39,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:35:39,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:35:39,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 05:35:39,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:35:39,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:35:39,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:35:39,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:35:39,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:35:39,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:35:39,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:35:39,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:35:39,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:35:39,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:35:39,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 05:35:39,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:35:39,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 05:35:39,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:35:39,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:35:39,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:35:39,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:35:39,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 05:35:39,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:35:59,471 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:35:59,472 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [331736150] [2020-10-29 05:35:59,472 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:35:59,472 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-29 05:35:59,472 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330928448] [2020-10-29 05:35:59,475 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-29 05:35:59,475 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:35:59,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-29 05:35:59,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=438, Unknown=0, NotChecked=0, Total=506 [2020-10-29 05:35:59,479 INFO L87 Difference]: Start difference. First operand 7586 states and 12131 transitions. Second operand 23 states. [2020-10-29 05:35:59,935 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-10-29 05:36:00,174 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-29 05:36:01,198 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2020-10-29 05:36:06,801 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-10-29 05:36:07,007 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-10-29 05:36:13,270 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-10-29 05:36:13,480 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-10-29 05:36:16,918 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-10-29 05:36:17,390 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-10-29 05:36:20,332 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-29 05:36:20,528 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-10-29 05:36:27,063 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-29 05:36:27,289 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-29 05:36:29,025 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-29 05:36:30,686 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-10-29 05:36:34,502 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-29 05:36:34,745 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-10-29 05:36:36,075 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-10-29 05:36:44,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:36:44,304 INFO L93 Difference]: Finished difference Result 16459 states and 26889 transitions. [2020-10-29 05:36:44,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-29 05:36:44,305 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 1695 [2020-10-29 05:36:44,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:36:44,361 INFO L225 Difference]: With dead ends: 16459 [2020-10-29 05:36:44,362 INFO L226 Difference]: Without dead ends: 8879 [2020-10-29 05:36:44,382 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 298 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=212, Invalid=1428, Unknown=0, NotChecked=0, Total=1640 [2020-10-29 05:36:44,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8879 states. [2020-10-29 05:36:44,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8879 to 8872. [2020-10-29 05:36:44,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8872 states. [2020-10-29 05:36:44,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8872 states to 8872 states and 13447 transitions. [2020-10-29 05:36:44,673 INFO L78 Accepts]: Start accepts. Automaton has 8872 states and 13447 transitions. Word has length 1695 [2020-10-29 05:36:44,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:36:44,676 INFO L481 AbstractCegarLoop]: Abstraction has 8872 states and 13447 transitions. [2020-10-29 05:36:44,676 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-29 05:36:44,676 INFO L276 IsEmpty]: Start isEmpty. Operand 8872 states and 13447 transitions. [2020-10-29 05:36:44,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1707 [2020-10-29 05:36:44,810 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:36:44,811 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:36:44,812 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 05:36:44,812 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:36:44,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:36:44,813 INFO L82 PathProgramCache]: Analyzing trace with hash 2010799353, now seen corresponding path program 1 times [2020-10-29 05:36:44,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:36:44,814 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1867834253] [2020-10-29 05:36:44,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:36:44,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:36:44,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:36:45,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:36:50,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:36:50,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1732 [2020-10-29 05:36:50,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:36:50,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5085 [2020-10-29 05:36:50,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:36:50,050 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:36:50,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-29 05:36:50,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-29 05:36:50,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1426 [2020-10-29 05:36:50,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:36:54,157 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 40 [2020-10-29 05:36:54,317 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 40 [2020-10-29 05:36:54,493 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 40 [2020-10-29 05:36:54,659 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 40 [2020-10-29 05:36:54,829 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 40 [2020-10-29 05:36:54,999 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 40 [2020-10-29 05:36:55,180 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 40 [2020-10-29 05:36:55,355 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 38 [2020-10-29 05:36:55,525 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 38 [2020-10-29 05:36:55,694 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 38 [2020-10-29 05:36:55,859 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 34 [2020-10-29 05:36:56,061 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 32 [2020-10-29 05:36:56,270 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 32 [2020-10-29 05:36:56,477 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 32 [2020-10-29 05:36:56,650 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 30 [2020-10-29 05:36:56,831 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 30 [2020-10-29 05:36:57,007 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 30 [2020-10-29 05:36:57,555 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2020-10-29 05:36:57,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:36:57,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:36:57,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:36:57,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:36:57,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:36:57,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:36:57,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 05:36:57,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:36:57,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:36:57,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:36:57,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:36:57,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:36:57,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:36:57,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:36:57,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:36:57,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:36:57,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:36:57,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-29 05:36:57,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:36:57,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-29 05:36:57,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:36:57,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:36:57,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:36:57,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:36:57,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-29 05:36:57,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:37:23,341 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:37:23,341 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1867834253] [2020-10-29 05:37:23,342 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:37:23,342 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-29 05:37:23,342 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303908999] [2020-10-29 05:37:23,351 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-29 05:37:23,352 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:37:23,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-29 05:37:23,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=526, Unknown=0, NotChecked=0, Total=600 [2020-10-29 05:37:23,354 INFO L87 Difference]: Start difference. First operand 8872 states and 13447 transitions. Second operand 25 states. [2020-10-29 05:37:23,955 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2020-10-29 05:37:24,220 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-29 05:37:31,899 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2020-10-29 05:37:32,177 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-29 05:37:39,821 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2020-10-29 05:37:40,096 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-29 05:37:46,925 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 117