/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/Problem13_label58.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 07:25:02,999 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 07:25:03,003 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 07:25:03,052 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 07:25:03,054 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 07:25:03,061 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 07:25:03,064 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 07:25:03,069 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 07:25:03,072 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 07:25:03,078 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 07:25:03,080 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 07:25:03,082 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 07:25:03,082 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 07:25:03,086 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 07:25:03,088 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 07:25:03,091 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 07:25:03,092 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 07:25:03,096 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 07:25:03,103 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 07:25:03,111 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 07:25:03,113 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 07:25:03,115 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 07:25:03,117 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 07:25:03,118 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 07:25:03,127 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 07:25:03,128 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 07:25:03,128 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 07:25:03,131 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 07:25:03,131 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 07:25:03,133 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 07:25:03,133 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 07:25:03,134 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 07:25:03,137 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 07:25:03,137 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 07:25:03,139 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 07:25:03,139 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 07:25:03,140 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 07:25:03,140 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 07:25:03,141 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 07:25:03,142 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 07:25:03,142 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 07:25:03,151 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 07:25:03,206 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 07:25:03,207 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 07:25:03,213 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 07:25:03,213 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 07:25:03,213 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 07:25:03,214 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 07:25:03,214 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 07:25:03,214 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 07:25:03,215 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 07:25:03,215 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 07:25:03,216 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 07:25:03,217 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 07:25:03,217 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 07:25:03,217 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 07:25:03,217 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 07:25:03,218 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 07:25:03,218 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 07:25:03,218 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 07:25:03,219 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 07:25:03,219 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 07:25:03,219 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 07:25:03,220 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 07:25:03,220 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 07:25:03,220 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 07:25:03,221 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 07:25:03,221 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 07:25:03,221 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 07:25:03,221 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 07:25:03,222 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 07:25:03,222 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 07:25:03,662 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 07:25:03,688 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 07:25:03,691 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 07:25:03,693 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 07:25:03,693 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 07:25:03,694 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label58.c [2020-10-29 07:25:03,766 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b77793928/7820e572173245fc958a4c4031be5ba3/FLAGd79412aaf [2020-10-29 07:25:04,911 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 07:25:04,912 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem13_label58.c [2020-10-29 07:25:04,972 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b77793928/7820e572173245fc958a4c4031be5ba3/FLAGd79412aaf [2020-10-29 07:25:05,281 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b77793928/7820e572173245fc958a4c4031be5ba3 [2020-10-29 07:25:05,285 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 07:25:05,294 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 07:25:05,298 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 07:25:05,298 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 07:25:05,303 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 07:25:05,304 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:25:05" (1/1) ... [2020-10-29 07:25:05,309 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63bfd4de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:25:05, skipping insertion in model container [2020-10-29 07:25:05,309 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:25:05" (1/1) ... [2020-10-29 07:25:05,320 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 07:25:05,554 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 07:25:07,164 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:25:07,174 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 07:25:07,974 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:25:08,016 INFO L208 MainTranslator]: Completed translation [2020-10-29 07:25:08,017 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:25:08 WrapperNode [2020-10-29 07:25:08,018 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 07:25:08,020 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 07:25:08,020 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 07:25:08,021 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 07:25:08,035 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:25:08" (1/1) ... [2020-10-29 07:25:08,038 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:25:08" (1/1) ... [2020-10-29 07:25:08,168 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:25:08" (1/1) ... [2020-10-29 07:25:08,168 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:25:08" (1/1) ... [2020-10-29 07:25:08,304 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:25:08" (1/1) ... [2020-10-29 07:25:08,349 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:25:08" (1/1) ... [2020-10-29 07:25:08,385 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:25:08" (1/1) ... [2020-10-29 07:25:08,423 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 07:25:08,425 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 07:25:08,425 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 07:25:08,425 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 07:25:08,426 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:25:08" (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 07:25:08,628 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 07:25:08,629 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 07:25:08,629 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 07:25:08,629 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 07:25:08,629 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 07:25:08,629 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-29 07:25:08,630 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-29 07:25:08,630 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 07:25:08,630 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 07:25:08,630 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 07:25:08,630 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-29 07:25:08,630 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-29 07:25:08,631 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 07:25:08,631 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 07:25:08,631 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 07:25:08,631 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 07:25:08,631 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 07:25:08,631 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 07:25:08,632 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 07:25:08,632 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 07:25:08,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 07:25:08,632 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 07:25:08,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 07:25:08,632 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 07:25:08,633 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 07:25:18,379 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 07:25:18,379 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 07:25:18,385 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:25:18 BoogieIcfgContainer [2020-10-29 07:25:18,386 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 07:25:18,390 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 07:25:18,390 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 07:25:18,394 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 07:25:18,394 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 07:25:05" (1/3) ... [2020-10-29 07:25:18,395 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@329d5967 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:25:18, skipping insertion in model container [2020-10-29 07:25:18,395 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:25:08" (2/3) ... [2020-10-29 07:25:18,396 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@329d5967 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:25:18, skipping insertion in model container [2020-10-29 07:25:18,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:25:18" (3/3) ... [2020-10-29 07:25:18,398 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem13_label58.c [2020-10-29 07:25:18,410 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 07:25:18,416 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 07:25:18,430 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 07:25:18,475 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 07:25:18,475 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 07:25:18,475 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 07:25:18,475 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 07:25:18,475 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 07:25:18,475 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 07:25:18,476 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 07:25:18,476 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 07:25:18,524 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states. [2020-10-29 07:25:18,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-29 07:25:18,530 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:25:18,531 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:25:18,531 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:25:18,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:25:18,538 INFO L82 PathProgramCache]: Analyzing trace with hash 1772765346, now seen corresponding path program 1 times [2020-10-29 07:25:18,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:25:18,547 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [419340728] [2020-10-29 07:25:18,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:25:18,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:25:18,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:25:19,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:25:19,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-29 07:25:19,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:25:19,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 554 [2020-10-29 07:25:19,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:25:19,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:25:19,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:25:19,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:25:19,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 07:25:19,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 07:25:19,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:25:19,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:25:19,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:25:19,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:25:19,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:25:19,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:25:19,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 07:25:19,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:25:19,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:25:19,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:25:19,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:25:19,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:25:19,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:25:19,524 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 07:25:19,525 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [419340728] [2020-10-29 07:25:19,527 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:25:19,528 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 07:25:19,528 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104760439] [2020-10-29 07:25:19,533 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 07:25:19,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:25:19,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 07:25:19,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 07:25:19,550 INFO L87 Difference]: Start difference. First operand 1123 states. Second operand 4 states. [2020-10-29 07:25:35,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:25:35,313 INFO L93 Difference]: Finished difference Result 3235 states and 5915 transitions. [2020-10-29 07:25:35,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:25:35,316 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-10-29 07:25:35,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:25:35,353 INFO L225 Difference]: With dead ends: 3235 [2020-10-29 07:25:35,353 INFO L226 Difference]: Without dead ends: 2027 [2020-10-29 07:25:35,364 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:25:35,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2027 states. [2020-10-29 07:25:35,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2027 to 2010. [2020-10-29 07:25:35,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2010 states. [2020-10-29 07:25:35,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2010 states to 2010 states and 3292 transitions. [2020-10-29 07:25:35,563 INFO L78 Accepts]: Start accepts. Automaton has 2010 states and 3292 transitions. Word has length 19 [2020-10-29 07:25:35,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:25:35,564 INFO L481 AbstractCegarLoop]: Abstraction has 2010 states and 3292 transitions. [2020-10-29 07:25:35,564 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 07:25:35,564 INFO L276 IsEmpty]: Start isEmpty. Operand 2010 states and 3292 transitions. [2020-10-29 07:25:35,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-29 07:25:35,572 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:25:35,572 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 07:25:35,573 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 07:25:35,573 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:25:35,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:25:35,575 INFO L82 PathProgramCache]: Analyzing trace with hash -1019460183, now seen corresponding path program 1 times [2020-10-29 07:25:35,575 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:25:35,576 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [442124309] [2020-10-29 07:25:35,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:25:35,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:25:35,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:25:36,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:25:36,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:25:36,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-29 07:25:36,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:25:36,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1023 [2020-10-29 07:25:36,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:25:36,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:25:36,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:25:36,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:25:36,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 07:25:36,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-29 07:25:36,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:25:36,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:25:36,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:25:36,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:25:36,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:25:36,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:25:36,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-29 07:25:36,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:25:36,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:25:36,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:25:36,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:25:36,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:25:36,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-29 07:25:36,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:25:36,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:25:36,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:25:37,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:25:37,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 07:25:37,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:25:37,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-10-29 07:25:37,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:25:37,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:25:37,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:25:37,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:25:37,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 07:25:37,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:25:37,182 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:25:37,183 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [442124309] [2020-10-29 07:25:37,183 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:25:37,183 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:25:37,184 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241103941] [2020-10-29 07:25:37,185 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:25:37,186 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:25:37,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:25:37,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:25:37,187 INFO L87 Difference]: Start difference. First operand 2010 states and 3292 transitions. Second operand 7 states. [2020-10-29 07:26:01,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:26:01,179 INFO L93 Difference]: Finished difference Result 5806 states and 9569 transitions. [2020-10-29 07:26:01,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:26:01,185 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 94 [2020-10-29 07:26:01,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:26:01,287 INFO L225 Difference]: With dead ends: 5806 [2020-10-29 07:26:01,288 INFO L226 Difference]: Without dead ends: 3802 [2020-10-29 07:26:01,294 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-29 07:26:01,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3802 states. [2020-10-29 07:26:01,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3802 to 3722. [2020-10-29 07:26:01,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3722 states. [2020-10-29 07:26:01,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3722 states to 3722 states and 5303 transitions. [2020-10-29 07:26:01,413 INFO L78 Accepts]: Start accepts. Automaton has 3722 states and 5303 transitions. Word has length 94 [2020-10-29 07:26:01,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:26:01,415 INFO L481 AbstractCegarLoop]: Abstraction has 3722 states and 5303 transitions. [2020-10-29 07:26:01,415 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:26:01,415 INFO L276 IsEmpty]: Start isEmpty. Operand 3722 states and 5303 transitions. [2020-10-29 07:26:01,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-29 07:26:01,425 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:26:01,425 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 07:26:01,426 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 07:26:01,426 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:26:01,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:26:01,427 INFO L82 PathProgramCache]: Analyzing trace with hash 213177157, now seen corresponding path program 1 times [2020-10-29 07:26:01,427 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:26:01,427 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1115687775] [2020-10-29 07:26:01,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:26:01,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:26:01,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:26:01,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:26:02,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:26:02,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-29 07:26:02,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:26:02,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1123 [2020-10-29 07:26:02,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:26:02,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:26:02,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:26:02,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:26:02,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-29 07:26:02,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:26:02,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:26:02,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:26:02,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:26:02,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:26:02,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:26:02,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:26:02,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 07:26:02,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:26:02,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:26:02,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:26:02,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:26:02,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:26:02,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:26:02,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:26:02,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:26:02,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:26:02,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:26:02,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-29 07:26:02,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:26:02,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 202 [2020-10-29 07:26:02,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:26:02,991 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:26:02,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:26:02,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:26:02,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-29 07:26:02,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:26:03,241 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:26:03,243 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1115687775] [2020-10-29 07:26:03,243 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:26:03,243 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:26:03,244 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630654186] [2020-10-29 07:26:03,244 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:26:03,245 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:26:03,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:26:03,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:26:03,246 INFO L87 Difference]: Start difference. First operand 3722 states and 5303 transitions. Second operand 7 states. [2020-10-29 07:26:23,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:26:23,185 INFO L93 Difference]: Finished difference Result 8520 states and 12179 transitions. [2020-10-29 07:26:23,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 07:26:23,187 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 124 [2020-10-29 07:26:23,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:26:23,222 INFO L225 Difference]: With dead ends: 8520 [2020-10-29 07:26:23,222 INFO L226 Difference]: Without dead ends: 4804 [2020-10-29 07:26:23,233 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-29 07:26:23,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4804 states. [2020-10-29 07:26:23,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4804 to 4572. [2020-10-29 07:26:23,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4572 states. [2020-10-29 07:26:23,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4572 states to 4572 states and 6234 transitions. [2020-10-29 07:26:23,426 INFO L78 Accepts]: Start accepts. Automaton has 4572 states and 6234 transitions. Word has length 124 [2020-10-29 07:26:23,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:26:23,430 INFO L481 AbstractCegarLoop]: Abstraction has 4572 states and 6234 transitions. [2020-10-29 07:26:23,430 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:26:23,430 INFO L276 IsEmpty]: Start isEmpty. Operand 4572 states and 6234 transitions. [2020-10-29 07:26:23,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-29 07:26:23,432 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:26:23,437 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 07:26:23,437 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 07:26:23,437 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:26:23,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:26:23,438 INFO L82 PathProgramCache]: Analyzing trace with hash 1814688505, now seen corresponding path program 1 times [2020-10-29 07:26:23,438 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:26:23,438 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [598057639] [2020-10-29 07:26:23,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:26:23,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:26:23,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:26:23,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:26:24,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:26:24,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-29 07:26:24,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:26:24,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1502 [2020-10-29 07:26:24,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:26:24,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:26:24,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:26:24,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:26:24,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-29 07:26:24,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:26:25,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:26:25,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:26:25,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:26:25,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:26:25,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:26:25,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:26:25,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 07:26:25,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:26:25,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:26:25,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:26:25,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:26:25,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:26:25,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:26:25,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:26:25,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:26:25,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:26:25,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:26:25,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-29 07:26:25,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:26:25,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-10-29 07:26:25,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:26:25,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:26:25,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:26:25,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:26:25,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-29 07:26:25,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 07:26:25,759 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:26:25,759 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [598057639] [2020-10-29 07:26:25,760 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:26:25,760 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-29 07:26:25,760 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219980728] [2020-10-29 07:26:25,762 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 07:26:25,762 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:26:25,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 07:26:25,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:26:25,768 INFO L87 Difference]: Start difference. First operand 4572 states and 6234 transitions. Second operand 8 states. [2020-10-29 07:26:26,949 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2020-10-29 07:26:50,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:26:50,079 INFO L93 Difference]: Finished difference Result 9263 states and 12636 transitions. [2020-10-29 07:26:50,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 07:26:50,081 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 134 [2020-10-29 07:26:50,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:26:50,108 INFO L225 Difference]: With dead ends: 9263 [2020-10-29 07:26:50,108 INFO L226 Difference]: Without dead ends: 4697 [2020-10-29 07:26:50,119 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-29 07:26:50,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4697 states. [2020-10-29 07:26:50,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4697 to 4577. [2020-10-29 07:26:50,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4577 states. [2020-10-29 07:26:50,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4577 states to 4577 states and 6192 transitions. [2020-10-29 07:26:50,241 INFO L78 Accepts]: Start accepts. Automaton has 4577 states and 6192 transitions. Word has length 134 [2020-10-29 07:26:50,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:26:50,243 INFO L481 AbstractCegarLoop]: Abstraction has 4577 states and 6192 transitions. [2020-10-29 07:26:50,243 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 07:26:50,243 INFO L276 IsEmpty]: Start isEmpty. Operand 4577 states and 6192 transitions. [2020-10-29 07:26:50,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-29 07:26:50,245 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:26:50,245 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 07:26:50,245 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 07:26:50,245 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:26:50,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:26:50,246 INFO L82 PathProgramCache]: Analyzing trace with hash 539037884, now seen corresponding path program 1 times [2020-10-29 07:26:50,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:26:50,246 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [932388437] [2020-10-29 07:26:50,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:26:50,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:26:50,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:26:50,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:26:51,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:26:51,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-29 07:26:51,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:26:51,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 861 [2020-10-29 07:26:51,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:26:51,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:26:51,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 07:26:51,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:26:51,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-10-29 07:26:51,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:26:51,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:26:51,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:26:51,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:26:51,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:26:51,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:26:51,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:26:51,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-29 07:26:51,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:26:51,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:26:51,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:26:51,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:26:51,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:26:51,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:26:51,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:26:51,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:26:51,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:26:51,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:26:51,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:26:51,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-29 07:26:51,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:26:51,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 277 [2020-10-29 07:26:51,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:26:51,755 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:26:51,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:26:51,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:26:51,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-29 07:26:51,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:26:51,858 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 07:26:51,859 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [932388437] [2020-10-29 07:26:51,859 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:26:51,859 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 07:26:51,859 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183418526] [2020-10-29 07:26:51,861 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 07:26:51,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:26:51,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 07:26:51,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:26:51,863 INFO L87 Difference]: Start difference. First operand 4577 states and 6192 transitions. Second operand 5 states. [2020-10-29 07:27:12,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:27:12,281 INFO L93 Difference]: Finished difference Result 10896 states and 15640 transitions. [2020-10-29 07:27:12,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:27:12,290 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 148 [2020-10-29 07:27:12,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:27:12,323 INFO L225 Difference]: With dead ends: 10896 [2020-10-29 07:27:12,323 INFO L226 Difference]: Without dead ends: 7128 [2020-10-29 07:27:12,334 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 07:27:12,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7128 states. [2020-10-29 07:27:12,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7128 to 7093. [2020-10-29 07:27:12,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7093 states. [2020-10-29 07:27:12,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7093 states to 7093 states and 9158 transitions. [2020-10-29 07:27:12,506 INFO L78 Accepts]: Start accepts. Automaton has 7093 states and 9158 transitions. Word has length 148 [2020-10-29 07:27:12,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:27:12,506 INFO L481 AbstractCegarLoop]: Abstraction has 7093 states and 9158 transitions. [2020-10-29 07:27:12,506 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 07:27:12,506 INFO L276 IsEmpty]: Start isEmpty. Operand 7093 states and 9158 transitions. [2020-10-29 07:27:12,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2020-10-29 07:27:12,509 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:27:12,509 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 07:27:12,510 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 07:27:12,510 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:27:12,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:27:12,511 INFO L82 PathProgramCache]: Analyzing trace with hash 125719650, now seen corresponding path program 1 times [2020-10-29 07:27:12,511 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:27:12,511 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1635524575] [2020-10-29 07:27:12,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:27:12,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:27:12,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:27:12,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:27:13,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:27:13,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:27:15,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:27:15,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-29 07:27:15,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:27:15,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2994 [2020-10-29 07:27:15,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:27:15,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:27:15,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 07:27:15,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:27:15,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 213 [2020-10-29 07:27:15,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:27:15,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:27:15,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:27:15,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:27:15,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:27:15,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:27:15,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:27:15,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 07:27:15,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:27:15,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:27:15,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:27:15,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:27:15,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:27:15,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:27:15,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:27:15,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:27:15,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:27:15,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:27:16,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:27:16,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-29 07:27:16,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:27:16,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 367 [2020-10-29 07:27:16,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:27:16,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:27:16,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:27:16,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:27:16,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-29 07:27:16,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:27:16,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-29 07:27:16,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:27:16,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:27:16,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:27:16,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 07:27:16,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:27:16,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-29 07:27:16,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:27:16,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:27:16,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:27:16,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:27:16,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-29 07:27:16,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:27:16,495 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 92 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 07:27:16,495 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1635524575] [2020-10-29 07:27:16,497 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:27:16,497 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:27:16,497 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625006261] [2020-10-29 07:27:16,498 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:27:16,498 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:27:16,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:27:16,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:27:16,499 INFO L87 Difference]: Start difference. First operand 7093 states and 9158 transitions. Second operand 7 states. [2020-10-29 07:27:44,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:27:44,722 INFO L93 Difference]: Finished difference Result 18757 states and 25569 transitions. [2020-10-29 07:27:44,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:27:44,724 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 224 [2020-10-29 07:27:44,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:27:44,770 INFO L225 Difference]: With dead ends: 18757 [2020-10-29 07:27:44,770 INFO L226 Difference]: Without dead ends: 12473 [2020-10-29 07:27:44,787 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:27:44,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12473 states. [2020-10-29 07:27:45,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12473 to 12318. [2020-10-29 07:27:45,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12318 states. [2020-10-29 07:27:45,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12318 states to 12318 states and 15468 transitions. [2020-10-29 07:27:45,153 INFO L78 Accepts]: Start accepts. Automaton has 12318 states and 15468 transitions. Word has length 224 [2020-10-29 07:27:45,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:27:45,154 INFO L481 AbstractCegarLoop]: Abstraction has 12318 states and 15468 transitions. [2020-10-29 07:27:45,154 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:27:45,154 INFO L276 IsEmpty]: Start isEmpty. Operand 12318 states and 15468 transitions. [2020-10-29 07:27:45,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2020-10-29 07:27:45,157 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:27:45,158 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 07:27:45,158 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 07:27:45,158 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:27:45,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:27:45,159 INFO L82 PathProgramCache]: Analyzing trace with hash 1679337989, now seen corresponding path program 1 times [2020-10-29 07:27:45,160 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:27:45,160 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [33954447] [2020-10-29 07:27:45,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:27:45,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:27:45,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:27:45,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:27:46,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:27:46,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-29 07:27:46,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:27:46,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 822 [2020-10-29 07:27:46,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:27:46,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:27:46,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:27:46,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-29 07:27:46,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-29 07:27:46,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:27:46,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:27:46,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:27:46,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:27:46,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:27:46,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:27:46,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:27:46,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 07:27:46,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:27:46,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:27:46,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:27:46,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:27:46,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:27:46,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:27:46,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:27:46,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:27:46,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:27:46,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:27:46,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-29 07:27:46,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:27:46,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-29 07:27:46,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:27:46,364 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:27:46,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:27:46,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:27:46,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-29 07:27:46,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:27:46,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-29 07:27:46,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:27:46,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:27:46,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:27:46,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-29 07:27:46,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:27:46,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-10-29 07:27:46,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:27:46,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:27:46,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:27:46,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:27:46,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-29 07:27:46,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:27:46,816 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 119 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 07:27:46,816 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [33954447] [2020-10-29 07:27:46,816 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:27:46,817 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:27:46,817 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127525207] [2020-10-29 07:27:46,817 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:27:46,818 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:27:46,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:27:46,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:27:46,819 INFO L87 Difference]: Start difference. First operand 12318 states and 15468 transitions. Second operand 7 states. [2020-10-29 07:28:11,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:28:11,958 INFO L93 Difference]: Finished difference Result 30413 states and 40361 transitions. [2020-10-29 07:28:11,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:28:11,960 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 226 [2020-10-29 07:28:11,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:28:12,025 INFO L225 Difference]: With dead ends: 30413 [2020-10-29 07:28:12,025 INFO L226 Difference]: Without dead ends: 18904 [2020-10-29 07:28:12,051 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:28:12,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18904 states. [2020-10-29 07:28:12,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18904 to 18612. [2020-10-29 07:28:12,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18612 states. [2020-10-29 07:28:12,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18612 states to 18612 states and 23605 transitions. [2020-10-29 07:28:12,516 INFO L78 Accepts]: Start accepts. Automaton has 18612 states and 23605 transitions. Word has length 226 [2020-10-29 07:28:12,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:28:12,517 INFO L481 AbstractCegarLoop]: Abstraction has 18612 states and 23605 transitions. [2020-10-29 07:28:12,517 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:28:12,517 INFO L276 IsEmpty]: Start isEmpty. Operand 18612 states and 23605 transitions. [2020-10-29 07:28:12,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-10-29 07:28:12,521 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:28:12,521 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 07:28:12,522 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 07:28:12,522 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:28:12,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:28:12,523 INFO L82 PathProgramCache]: Analyzing trace with hash -2053838957, now seen corresponding path program 1 times [2020-10-29 07:28:12,523 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:28:12,524 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [956134265] [2020-10-29 07:28:12,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:28:12,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:28:12,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:28:12,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:28:12,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:28:13,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:28:14,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:28:15,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:28:15,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 255 [2020-10-29 07:28:15,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 07:28:15,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2893 [2020-10-29 07:28:15,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:28:15,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:28:15,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 07:28:15,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:28:15,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 246 [2020-10-29 07:28:15,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:28:15,731 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 07:28:15,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:28:15,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:28:15,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:28:15,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:28:15,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:28:15,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:28:15,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 07:28:15,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:28:15,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:28:15,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:28:15,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:28:15,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:28:15,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:28:15,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:28:15,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:28:15,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:28:16,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:28:16,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:28:16,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-29 07:28:16,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:28:16,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 303 [2020-10-29 07:28:16,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:28:16,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:28:16,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:28:16,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:28:16,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-29 07:28:16,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:28:16,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-29 07:28:16,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:28:16,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:28:16,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:28:16,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:28:16,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-29 07:28:16,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:28:16,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 280 [2020-10-29 07:28:16,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:28:16,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:28:16,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:28:16,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:28:16,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-29 07:28:16,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:28:16,667 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2020-10-29 07:28:16,667 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [956134265] [2020-10-29 07:28:16,668 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:28:16,668 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:28:16,668 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040002917] [2020-10-29 07:28:16,669 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:28:16,669 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:28:16,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:28:16,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:28:16,670 INFO L87 Difference]: Start difference. First operand 18612 states and 23605 transitions. Second operand 7 states. [2020-10-29 07:28:16,857 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2020-10-29 07:28:17,956 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2020-10-29 07:28:19,576 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-10-29 07:28:24,139 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 68