/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_label11.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 05:20:52,907 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 05:20:52,909 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 05:20:52,946 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 05:20:52,947 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 05:20:52,949 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 05:20:52,950 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 05:20:52,953 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 05:20:52,955 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 05:20:52,956 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 05:20:52,958 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 05:20:52,959 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 05:20:52,959 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 05:20:52,961 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 05:20:52,962 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 05:20:52,963 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 05:20:52,964 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 05:20:52,965 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 05:20:52,968 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 05:20:52,970 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 05:20:52,972 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 05:20:52,973 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 05:20:52,975 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 05:20:52,975 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 05:20:52,979 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 05:20:52,979 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 05:20:52,980 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 05:20:52,981 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 05:20:52,981 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 05:20:52,982 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 05:20:52,983 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 05:20:52,986 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 05:20:52,987 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 05:20:52,988 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 05:20:52,992 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 05:20:52,992 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 05:20:52,993 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 05:20:52,993 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 05:20:52,993 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 05:20:52,996 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 05:20:52,997 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 05:20:53,000 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 05:20:53,033 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 05:20:53,034 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 05:20:53,035 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 05:20:53,035 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 05:20:53,036 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 05:20:53,036 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 05:20:53,036 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 05:20:53,037 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 05:20:53,037 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 05:20:53,037 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 05:20:53,037 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 05:20:53,037 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 05:20:53,038 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 05:20:53,038 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 05:20:53,038 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 05:20:53,038 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 05:20:53,039 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 05:20:53,039 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 05:20:53,039 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 05:20:53,040 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 05:20:53,040 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 05:20:53,040 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 05:20:53,040 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 05:20:53,041 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 05:20:53,041 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 05:20:53,041 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 05:20:53,041 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 05:20:53,042 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 05:20:53,042 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 05:20:53,042 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 05:20:53,441 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 05:20:53,464 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 05:20:53,467 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 05:20:53,469 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 05:20:53,476 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 05:20:53,477 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label11.c [2020-10-29 05:20:53,563 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ee75085e8/3a64eda2f0de4517a5f6eec87cb8f6a4/FLAGe6fc26a7a [2020-10-29 05:20:54,904 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 05:20:54,905 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem05_label11.c [2020-10-29 05:20:54,966 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ee75085e8/3a64eda2f0de4517a5f6eec87cb8f6a4/FLAGe6fc26a7a [2020-10-29 05:20:55,025 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ee75085e8/3a64eda2f0de4517a5f6eec87cb8f6a4 [2020-10-29 05:20:55,029 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 05:20:55,038 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 05:20:55,041 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 05:20:55,041 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 05:20:55,045 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 05:20:55,046 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:20:55" (1/1) ... [2020-10-29 05:20:55,050 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@132a9d6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:20:55, skipping insertion in model container [2020-10-29 05:20:55,050 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:20:55" (1/1) ... [2020-10-29 05:20:55,059 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 05:20:55,313 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 05:20:57,396 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 05:20:57,412 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 05:20:58,539 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 05:20:58,610 INFO L208 MainTranslator]: Completed translation [2020-10-29 05:20:58,611 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:20:58 WrapperNode [2020-10-29 05:20:58,611 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 05:20:58,612 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 05:20:58,613 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 05:20:58,613 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 05:20:58,626 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:20:58" (1/1) ... [2020-10-29 05:20:58,628 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:20:58" (1/1) ... [2020-10-29 05:20:58,748 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:20:58" (1/1) ... [2020-10-29 05:20:58,749 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:20:58" (1/1) ... [2020-10-29 05:20:59,044 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:20:58" (1/1) ... [2020-10-29 05:20:59,169 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:20:58" (1/1) ... [2020-10-29 05:20:59,209 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:20:58" (1/1) ... [2020-10-29 05:20:59,268 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 05:20:59,270 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 05:20:59,270 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 05:20:59,270 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 05:20:59,271 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:20:58" (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 05:20:59,353 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 05:20:59,353 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 05:20:59,354 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 05:20:59,354 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 05:20:59,354 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 05:20:59,355 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-29 05:20:59,355 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-29 05:20:59,355 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-29 05:20:59,356 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-29 05:20:59,356 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output7 [2020-10-29 05:20:59,357 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output8 [2020-10-29 05:20:59,357 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 05:20:59,357 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 05:20:59,357 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 05:20:59,357 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-29 05:20:59,358 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-29 05:20:59,358 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-29 05:20:59,358 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-29 05:20:59,358 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output7 [2020-10-29 05:20:59,358 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output8 [2020-10-29 05:20:59,359 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 05:20:59,359 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 05:20:59,359 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 05:20:59,359 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 05:20:59,359 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 05:20:59,359 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 05:20:59,359 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 05:20:59,360 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 05:20:59,360 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 05:20:59,360 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 05:20:59,360 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 05:20:59,360 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 05:20:59,360 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 05:21:08,831 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 05:21:08,832 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 05:21:08,837 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:21:08 BoogieIcfgContainer [2020-10-29 05:21:08,837 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 05:21:08,839 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 05:21:08,839 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 05:21:08,842 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 05:21:08,843 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:20:55" (1/3) ... [2020-10-29 05:21:08,844 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49a135e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:21:08, skipping insertion in model container [2020-10-29 05:21:08,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:20:58" (2/3) ... [2020-10-29 05:21:08,844 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49a135e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:21:08, skipping insertion in model container [2020-10-29 05:21:08,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:21:08" (3/3) ... [2020-10-29 05:21:08,846 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label11.c [2020-10-29 05:21:08,857 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 05:21:08,864 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 05:21:08,876 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 05:21:08,913 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 05:21:08,914 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 05:21:08,914 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 05:21:08,914 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 05:21:08,914 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 05:21:08,914 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 05:21:08,914 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 05:21:08,915 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 05:21:08,966 INFO L276 IsEmpty]: Start isEmpty. Operand 2226 states. [2020-10-29 05:21:09,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1670 [2020-10-29 05:21:09,109 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:21:09,112 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:21:09,112 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:21:09,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:21:09,128 INFO L82 PathProgramCache]: Analyzing trace with hash 1640527305, now seen corresponding path program 1 times [2020-10-29 05:21:09,140 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:21:09,141 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [722943447] [2020-10-29 05:21:09,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:21:10,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:21:10,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:21:15,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:21:15,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1693 [2020-10-29 05:21:15,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:21:15,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5206 [2020-10-29 05:21:15,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:21:15,414 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:21:15,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 05:21:15,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 05:21:15,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1684 [2020-10-29 05:21:15,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 05:21:17,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:21:17,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:21:17,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:21:17,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:21:17,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:21:17,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:21:17,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-29 05:21:17,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:21:17,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:21:17,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:21:17,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:21:17,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 05:21:17,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:21:20,723 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 05:21:20,724 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [722943447] [2020-10-29 05:21:20,726 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 05:21:20,726 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 05:21:20,727 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434389762] [2020-10-29 05:21:20,736 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:21:20,736 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:21:20,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:21:20,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:21:20,750 INFO L87 Difference]: Start difference. First operand 2226 states. Second operand 5 states. [2020-10-29 05:21:52,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:21:52,639 INFO L93 Difference]: Finished difference Result 8129 states and 15417 transitions. [2020-10-29 05:21:52,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 05:21:52,642 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1669 [2020-10-29 05:21:52,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:21:52,731 INFO L225 Difference]: With dead ends: 8129 [2020-10-29 05:21:52,731 INFO L226 Difference]: Without dead ends: 5835 [2020-10-29 05:21:52,750 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-29 05:21:52,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5835 states. [2020-10-29 05:21:53,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5835 to 5802. [2020-10-29 05:21:53,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5802 states. [2020-10-29 05:21:53,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5802 states to 5802 states and 9375 transitions. [2020-10-29 05:21:53,079 INFO L78 Accepts]: Start accepts. Automaton has 5802 states and 9375 transitions. Word has length 1669 [2020-10-29 05:21:53,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:21:53,086 INFO L481 AbstractCegarLoop]: Abstraction has 5802 states and 9375 transitions. [2020-10-29 05:21:53,087 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:21:53,087 INFO L276 IsEmpty]: Start isEmpty. Operand 5802 states and 9375 transitions. [2020-10-29 05:21:53,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1679 [2020-10-29 05:21:53,488 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:21:53,490 INFO L422 BasicCegarLoop]: trace histogram [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, 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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] [2020-10-29 05:21:53,491 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 05:21:53,492 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:21:53,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:21:53,494 INFO L82 PathProgramCache]: Analyzing trace with hash -104850099, now seen corresponding path program 1 times [2020-10-29 05:21:53,495 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:21:53,495 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [117046826] [2020-10-29 05:21:53,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:21:53,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:21:53,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:21:55,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:21:58,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:21:58,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1704 [2020-10-29 05:21:58,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:21:58,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 05:21:58,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:21:58,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:21:58,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 05:21:58,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-29 05:21:58,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1681 [2020-10-29 05:21:58,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 05:22:00,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:22:00,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:22:00,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:22:00,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:22:00,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:22:00,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:22:00,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 05:22:00,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:22:00,627 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:22:00,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:22:00,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:22:00,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:22:00,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 05:22:00,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:22:00,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:22:00,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:22:00,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:22:00,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 05:22:00,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:22:00,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 05:22:00,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:22:00,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:22:00,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:22:00,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:22:00,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 05:22:00,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:22:03,196 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:22:03,197 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [117046826] [2020-10-29 05:22:03,198 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:22:03,198 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 05:22:03,198 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942050124] [2020-10-29 05:22:03,206 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:22:03,206 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:22:03,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:22:03,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:22:03,215 INFO L87 Difference]: Start difference. First operand 5802 states and 9375 transitions. Second operand 5 states. [2020-10-29 05:22:29,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:22:29,295 INFO L93 Difference]: Finished difference Result 16918 states and 27742 transitions. [2020-10-29 05:22:29,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:22:29,296 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1678 [2020-10-29 05:22:29,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:22:29,362 INFO L225 Difference]: With dead ends: 16918 [2020-10-29 05:22:29,362 INFO L226 Difference]: Without dead ends: 11122 [2020-10-29 05:22:29,379 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 05:22:29,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11122 states. [2020-10-29 05:22:29,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11122 to 11076. [2020-10-29 05:22:29,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11076 states. [2020-10-29 05:22:29,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11076 states to 11076 states and 15664 transitions. [2020-10-29 05:22:29,672 INFO L78 Accepts]: Start accepts. Automaton has 11076 states and 15664 transitions. Word has length 1678 [2020-10-29 05:22:29,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:22:29,676 INFO L481 AbstractCegarLoop]: Abstraction has 11076 states and 15664 transitions. [2020-10-29 05:22:29,676 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:22:29,676 INFO L276 IsEmpty]: Start isEmpty. Operand 11076 states and 15664 transitions. [2020-10-29 05:22:29,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1685 [2020-10-29 05:22:29,734 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:22:29,735 INFO L422 BasicCegarLoop]: trace histogram [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, 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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] [2020-10-29 05:22:29,736 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 05:22:29,736 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:22:29,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:22:29,738 INFO L82 PathProgramCache]: Analyzing trace with hash -721613417, now seen corresponding path program 1 times [2020-10-29 05:22:29,738 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:22:29,738 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [588765297] [2020-10-29 05:22:29,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:22:29,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:22:29,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:22:31,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:22:35,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:22:35,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1710 [2020-10-29 05:22:35,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:22:35,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5136 [2020-10-29 05:22:35,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:22:35,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:22:35,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 05:22:35,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-29 05:22:35,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1682 [2020-10-29 05:22:35,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:22:35,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:22:35,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:22:35,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:22:35,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:22:35,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:22:35,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:22:35,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 05:22:35,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:22:35,909 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:22:35,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:22:35,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:22:35,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:22:35,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:22:35,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:22:35,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:22:35,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:22:35,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:22:35,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 05:22:35,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:22:35,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 05:22:35,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:22:35,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:22:35,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:22:35,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:22:35,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 05:22:35,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:22:39,114 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:22:39,115 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [588765297] [2020-10-29 05:22:39,115 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:22:39,116 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 05:22:39,116 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040321424] [2020-10-29 05:22:39,118 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 05:22:39,118 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:22:39,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 05:22:39,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:22:39,119 INFO L87 Difference]: Start difference. First operand 11076 states and 15664 transitions. Second operand 6 states. [2020-10-29 05:23:15,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:23:15,522 INFO L93 Difference]: Finished difference Result 43367 states and 63482 transitions. [2020-10-29 05:23:15,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 05:23:15,523 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 1684 [2020-10-29 05:23:15,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:23:15,674 INFO L225 Difference]: With dead ends: 43367 [2020-10-29 05:23:15,678 INFO L226 Difference]: Without dead ends: 32297 [2020-10-29 05:23:15,717 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 05:23:15,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32297 states. [2020-10-29 05:23:16,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32297 to 32149. [2020-10-29 05:23:16,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32149 states. [2020-10-29 05:23:16,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32149 states to 32149 states and 44310 transitions. [2020-10-29 05:23:16,706 INFO L78 Accepts]: Start accepts. Automaton has 32149 states and 44310 transitions. Word has length 1684 [2020-10-29 05:23:16,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:23:16,709 INFO L481 AbstractCegarLoop]: Abstraction has 32149 states and 44310 transitions. [2020-10-29 05:23:16,709 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 05:23:16,709 INFO L276 IsEmpty]: Start isEmpty. Operand 32149 states and 44310 transitions. [2020-10-29 05:23:16,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1717 [2020-10-29 05:23:16,920 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:23:16,921 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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, 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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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:23:16,922 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 05:23:16,922 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:23:16,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:23:16,923 INFO L82 PathProgramCache]: Analyzing trace with hash 1689140150, now seen corresponding path program 1 times [2020-10-29 05:23:16,923 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:23:16,924 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1674414081] [2020-10-29 05:23:16,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:23:17,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:23:17,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:23:17,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:23:17,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:23:18,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:23:22,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:23:22,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1746 [2020-10-29 05:23:22,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 05:23:22,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-29 05:23:22,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:23:22,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:23:22,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-29 05:23:22,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-29 05:23:22,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1273 [2020-10-29 05:23:22,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:23:26,348 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 35 [2020-10-29 05:23:26,497 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 35 [2020-10-29 05:23:26,698 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 35 [2020-10-29 05:23:26,860 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 38 [2020-10-29 05:23:27,000 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 36 [2020-10-29 05:23:27,145 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 36 [2020-10-29 05:23:27,294 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 36 [2020-10-29 05:23:27,439 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 32 [2020-10-29 05:23:28,293 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 36 [2020-10-29 05:23:28,484 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 36 [2020-10-29 05:23:28,720 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 39 [2020-10-29 05:23:28,998 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 42 [2020-10-29 05:23:29,434 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 44 [2020-10-29 05:23:29,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:23:29,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:23:29,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:23:29,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:23:29,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:23:29,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:23:29,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 05:23:29,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:23:29,568 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:23:29,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:23:29,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:23:29,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:23:29,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:23:29,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:23:29,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:23:29,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:23:29,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:23:29,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 05:23:29,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:23:29,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 05:23:29,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:23:29,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:23:29,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:23:29,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:23:29,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:23:29,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:23:29,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-29 05:23:29,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:23:29,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:23:29,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:23:29,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-29 05:23:29,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:23:29,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 05:23:29,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:23:29,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:23:29,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:23:29,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:23:29,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:23:29,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:23:29,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-29 05:23:29,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:23:29,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:23:29,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:23:29,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 05:23:29,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:23:29,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 05:23:29,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:23:29,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:23:29,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:23:29,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:23:29,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 05:23:29,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:23:49,657 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 39 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-29 05:23:49,657 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1674414081] [2020-10-29 05:23:49,657 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:23:49,657 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-29 05:23:49,658 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797073740] [2020-10-29 05:23:49,660 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-29 05:23:49,660 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:23:49,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-29 05:23:49,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=437, Unknown=0, NotChecked=0, Total=506 [2020-10-29 05:23:49,661 INFO L87 Difference]: Start difference. First operand 32149 states and 44310 transitions. Second operand 23 states. [2020-10-29 05:23:50,492 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-10-29 05:23:50,733 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-10-29 05:23:53,983 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-29 05:23:56,626 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-29 05:23:58,686 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-10-29 05:23:58,926 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-29 05:23:59,868 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-10-29 05:24:03,055 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 105 [2020-10-29 05:24:06,950 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-29 05:24:07,167 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-10-29 05:24:14,389 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-29 05:24:14,596 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-10-29 05:24:21,999 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-10-29 05:24:22,248 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2020-10-29 05:24:29,553 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-10-29 05:24:29,824 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-29 05:24:33,639 WARN L193 SmtUtils]: Spent 436.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 104