/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/Problem17_label42.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 08:21:45,414 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 08:21:45,418 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 08:21:45,481 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 08:21:45,482 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 08:21:45,490 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 08:21:45,493 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 08:21:45,499 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 08:21:45,504 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 08:21:45,512 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 08:21:45,515 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 08:21:45,517 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 08:21:45,517 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 08:21:45,521 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 08:21:45,526 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 08:21:45,529 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 08:21:45,530 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 08:21:45,535 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 08:21:45,543 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 08:21:45,552 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 08:21:45,554 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 08:21:45,557 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 08:21:45,559 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 08:21:45,562 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 08:21:45,572 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 08:21:45,572 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 08:21:45,573 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 08:21:45,575 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 08:21:45,576 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 08:21:45,577 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 08:21:45,578 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 08:21:45,579 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 08:21:45,581 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 08:21:45,583 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 08:21:45,584 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 08:21:45,584 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 08:21:45,585 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 08:21:45,586 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 08:21:45,586 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 08:21:45,587 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 08:21:45,588 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 08:21:45,597 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 08:21:45,665 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 08:21:45,666 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 08:21:45,672 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 08:21:45,672 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 08:21:45,672 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 08:21:45,673 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 08:21:45,673 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 08:21:45,673 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 08:21:45,673 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 08:21:45,674 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 08:21:45,675 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 08:21:45,676 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 08:21:45,676 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 08:21:45,676 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 08:21:45,676 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 08:21:45,676 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 08:21:45,677 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 08:21:45,677 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 08:21:45,677 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 08:21:45,677 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 08:21:45,678 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 08:21:45,678 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 08:21:45,678 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 08:21:45,678 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 08:21:45,679 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 08:21:45,679 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 08:21:45,679 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 08:21:45,679 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 08:21:45,679 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 08:21:45,680 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 08:21:46,187 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 08:21:46,230 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 08:21:46,234 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 08:21:46,236 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 08:21:46,237 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 08:21:46,238 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label42.c [2020-10-29 08:21:46,352 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3f0d34c10/a2303d2dffb9477e83e2f19d7f78af83/FLAG47aaef500 [2020-10-29 08:21:47,464 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 08:21:47,465 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label42.c [2020-10-29 08:21:47,499 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3f0d34c10/a2303d2dffb9477e83e2f19d7f78af83/FLAG47aaef500 [2020-10-29 08:21:48,002 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3f0d34c10/a2303d2dffb9477e83e2f19d7f78af83 [2020-10-29 08:21:48,006 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 08:21:48,013 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 08:21:48,015 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 08:21:48,015 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 08:21:48,020 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 08:21:48,021 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 08:21:48" (1/1) ... [2020-10-29 08:21:48,025 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ab50f8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:21:48, skipping insertion in model container [2020-10-29 08:21:48,025 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 08:21:48" (1/1) ... [2020-10-29 08:21:48,035 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 08:21:48,124 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 08:21:49,132 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 08:21:49,151 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 08:21:49,651 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 08:21:49,682 INFO L208 MainTranslator]: Completed translation [2020-10-29 08:21:49,684 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:21:49 WrapperNode [2020-10-29 08:21:49,685 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 08:21:49,686 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 08:21:49,687 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 08:21:49,687 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 08:21:49,703 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:21:49" (1/1) ... [2020-10-29 08:21:49,706 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:21:49" (1/1) ... [2020-10-29 08:21:49,807 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:21:49" (1/1) ... [2020-10-29 08:21:49,807 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:21:49" (1/1) ... [2020-10-29 08:21:49,945 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:21:49" (1/1) ... [2020-10-29 08:21:49,983 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:21:49" (1/1) ... [2020-10-29 08:21:50,022 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:21:49" (1/1) ... [2020-10-29 08:21:50,062 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 08:21:50,064 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 08:21:50,065 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 08:21:50,065 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 08:21:50,066 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:21:49" (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 08:21:50,159 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 08:21:50,159 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 08:21:50,160 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 08:21:50,160 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 08:21:50,161 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 08:21:50,162 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 08:21:50,162 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 08:21:50,162 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 08:21:50,163 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 08:21:50,163 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 08:21:50,164 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 08:21:50,164 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 08:21:50,164 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 08:21:50,164 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 08:21:50,165 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 08:21:50,166 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 08:21:50,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 08:21:50,166 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 08:21:50,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 08:21:50,167 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 08:21:50,167 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 08:21:59,952 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 08:21:59,953 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 08:21:59,958 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 08:21:59 BoogieIcfgContainer [2020-10-29 08:21:59,959 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 08:21:59,963 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 08:21:59,964 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 08:21:59,968 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 08:21:59,969 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 08:21:48" (1/3) ... [2020-10-29 08:21:59,970 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31fe7353 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 08:21:59, skipping insertion in model container [2020-10-29 08:21:59,970 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:21:49" (2/3) ... [2020-10-29 08:21:59,970 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31fe7353 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 08:21:59, skipping insertion in model container [2020-10-29 08:21:59,970 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 08:21:59" (3/3) ... [2020-10-29 08:21:59,972 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem17_label42.c [2020-10-29 08:21:59,982 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 08:21:59,989 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 08:22:00,005 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 08:22:00,044 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 08:22:00,044 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 08:22:00,044 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 08:22:00,044 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 08:22:00,044 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 08:22:00,045 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 08:22:00,045 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 08:22:00,045 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 08:22:00,081 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states. [2020-10-29 08:22:00,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-29 08:22:00,092 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:22:00,093 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] [2020-10-29 08:22:00,094 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:22:00,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:22:00,102 INFO L82 PathProgramCache]: Analyzing trace with hash 1081277931, now seen corresponding path program 1 times [2020-10-29 08:22:00,114 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:22:00,115 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1610863700] [2020-10-29 08:22:00,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:22:00,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:22:00,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:22:01,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:22:01,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-29 08:22:01,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:22:01,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 680 [2020-10-29 08:22:01,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:22:01,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:22:01,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:22:01,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:22:01,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-29 08:22:01,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 08:22:01,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:22:01,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:22:01,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:22:01,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:22:01,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:22:01,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:22:01,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-29 08:22:01,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:22:01,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:22:01,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:22:01,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:22:01,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:22:01,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:22:01,452 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 08:22:01,453 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1610863700] [2020-10-29 08:22:01,456 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:22:01,456 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 08:22:01,458 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265542372] [2020-10-29 08:22:01,464 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 08:22:01,465 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:22:01,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 08:22:01,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 08:22:01,491 INFO L87 Difference]: Start difference. First operand 607 states. Second operand 4 states. [2020-10-29 08:22:01,682 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-29 08:22:14,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:22:14,315 INFO L93 Difference]: Finished difference Result 1694 states and 3092 transitions. [2020-10-29 08:22:14,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 08:22:14,318 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-10-29 08:22:14,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:22:14,350 INFO L225 Difference]: With dead ends: 1694 [2020-10-29 08:22:14,351 INFO L226 Difference]: Without dead ends: 1010 [2020-10-29 08:22:14,362 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 2 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 08:22:14,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1010 states. [2020-10-29 08:22:14,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1010 to 992. [2020-10-29 08:22:14,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 992 states. [2020-10-29 08:22:14,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 992 states to 992 states and 1527 transitions. [2020-10-29 08:22:14,539 INFO L78 Accepts]: Start accepts. Automaton has 992 states and 1527 transitions. Word has length 47 [2020-10-29 08:22:14,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:22:14,541 INFO L481 AbstractCegarLoop]: Abstraction has 992 states and 1527 transitions. [2020-10-29 08:22:14,541 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 08:22:14,541 INFO L276 IsEmpty]: Start isEmpty. Operand 992 states and 1527 transitions. [2020-10-29 08:22:14,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-29 08:22:14,555 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:22:14,557 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 08:22:14,558 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 08:22:14,558 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:22:14,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:22:14,559 INFO L82 PathProgramCache]: Analyzing trace with hash 1676973866, now seen corresponding path program 1 times [2020-10-29 08:22:14,559 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:22:14,560 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2019115298] [2020-10-29 08:22:14,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:22:14,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:22:14,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:22:15,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:22:16,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:22:16,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:22:16,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-29 08:22:16,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:22:16,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1866 [2020-10-29 08:22:16,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:22:16,542 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:22:16,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 08:22:16,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:22:16,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-29 08:22:16,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 08:22:16,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:22:16,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:22:16,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:22:16,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:22:16,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:22:16,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:22:16,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 08:22:16,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:22:16,726 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:22:16,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:22:16,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:22:16,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:22:16,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:22:16,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:22:16,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:22:16,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:22:16,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:22:17,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:22:17,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 08:22:17,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:22:17,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 325 [2020-10-29 08:22:17,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:22:17,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:22:17,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:22:17,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:22:17,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-29 08:22:17,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:22:17,216 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 08:22:17,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2019115298] [2020-10-29 08:22:17,217 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:22:17,217 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 08:22:17,217 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812572417] [2020-10-29 08:22:17,220 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 08:22:17,221 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:22:17,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 08:22:17,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 08:22:17,227 INFO L87 Difference]: Start difference. First operand 992 states and 1527 transitions. Second operand 6 states. [2020-10-29 08:22:34,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:22:34,883 INFO L93 Difference]: Finished difference Result 2453 states and 3905 transitions. [2020-10-29 08:22:34,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 08:22:34,888 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 118 [2020-10-29 08:22:34,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:22:34,898 INFO L225 Difference]: With dead ends: 2453 [2020-10-29 08:22:34,898 INFO L226 Difference]: Without dead ends: 1467 [2020-10-29 08:22:34,901 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 08:22:34,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1467 states. [2020-10-29 08:22:34,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1467 to 1453. [2020-10-29 08:22:34,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1453 states. [2020-10-29 08:22:34,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1453 states to 1453 states and 1975 transitions. [2020-10-29 08:22:34,986 INFO L78 Accepts]: Start accepts. Automaton has 1453 states and 1975 transitions. Word has length 118 [2020-10-29 08:22:34,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:22:34,989 INFO L481 AbstractCegarLoop]: Abstraction has 1453 states and 1975 transitions. [2020-10-29 08:22:34,989 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 08:22:34,990 INFO L276 IsEmpty]: Start isEmpty. Operand 1453 states and 1975 transitions. [2020-10-29 08:22:35,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-29 08:22:35,000 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:22:35,001 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 08:22:35,003 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 08:22:35,003 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:22:35,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:22:35,006 INFO L82 PathProgramCache]: Analyzing trace with hash -1136622305, now seen corresponding path program 1 times [2020-10-29 08:22:35,006 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:22:35,006 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1211311227] [2020-10-29 08:22:35,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:22:35,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:22:35,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:22:35,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:22:36,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:22:36,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-29 08:22:36,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:22:36,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1162 [2020-10-29 08:22:36,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:22:36,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:22:36,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 08:22:36,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:22:36,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-29 08:22:36,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:22:36,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:22:36,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:22:36,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:22:36,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:22:36,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:22:36,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:22:36,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 08:22:36,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:22:36,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:22:36,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:22:36,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:22:36,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:22:36,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:22:36,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:22:36,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:22:36,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:22:36,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:22:36,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-29 08:22:36,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:22:36,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 217 [2020-10-29 08:22:36,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:22:36,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:22:36,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 08:22:36,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:22:36,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-29 08:22:36,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:22:36,945 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 11 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:22:36,946 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1211311227] [2020-10-29 08:22:36,946 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:22:36,946 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:22:36,948 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98851436] [2020-10-29 08:22:36,951 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 08:22:36,951 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:22:36,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 08:22:36,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-29 08:22:36,954 INFO L87 Difference]: Start difference. First operand 1453 states and 1975 transitions. Second operand 8 states. [2020-10-29 08:22:37,864 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 78 [2020-10-29 08:22:38,575 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 69 [2020-10-29 08:22:57,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:22:57,262 INFO L93 Difference]: Finished difference Result 2554 states and 3584 transitions. [2020-10-29 08:22:57,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 08:22:57,269 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 121 [2020-10-29 08:22:57,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:22:57,278 INFO L225 Difference]: With dead ends: 2554 [2020-10-29 08:22:57,279 INFO L226 Difference]: Without dead ends: 1502 [2020-10-29 08:22:57,284 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2020-10-29 08:22:57,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1502 states. [2020-10-29 08:22:57,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1502 to 1460. [2020-10-29 08:22:57,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1460 states. [2020-10-29 08:22:57,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1460 states to 1460 states and 1963 transitions. [2020-10-29 08:22:57,341 INFO L78 Accepts]: Start accepts. Automaton has 1460 states and 1963 transitions. Word has length 121 [2020-10-29 08:22:57,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:22:57,342 INFO L481 AbstractCegarLoop]: Abstraction has 1460 states and 1963 transitions. [2020-10-29 08:22:57,342 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 08:22:57,342 INFO L276 IsEmpty]: Start isEmpty. Operand 1460 states and 1963 transitions. [2020-10-29 08:22:57,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-29 08:22:57,344 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:22:57,345 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 08:22:57,345 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 08:22:57,345 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:22:57,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:22:57,346 INFO L82 PathProgramCache]: Analyzing trace with hash -1848914998, now seen corresponding path program 1 times [2020-10-29 08:22:57,346 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:22:57,346 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1305346230] [2020-10-29 08:22:57,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:22:57,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:22:57,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:22:57,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:22:57,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-29 08:22:57,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:22:57,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 389 [2020-10-29 08:22:57,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:22:57,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:22:57,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:22:57,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-29 08:22:57,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-29 08:22:57,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:22:57,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:22:57,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:22:57,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:22:57,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:22:57,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:22:57,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:22:57,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 08:22:57,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:22:57,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:22:57,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:22:57,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:22:57,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:22:57,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:22:57,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:22:57,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:22:57,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:22:58,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:22:58,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:22:58,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:22:58,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-29 08:22:58,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:22:58,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:22:58,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:22:58,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:22:58,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 08:22:58,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:22:58,171 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 38 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:22:58,172 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1305346230] [2020-10-29 08:22:58,172 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:22:58,172 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 08:22:58,172 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126035131] [2020-10-29 08:22:58,173 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 08:22:58,173 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:22:58,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 08:22:58,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 08:22:58,186 INFO L87 Difference]: Start difference. First operand 1460 states and 1963 transitions. Second operand 5 states. [2020-10-29 08:23:12,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:23:12,144 INFO L93 Difference]: Finished difference Result 3395 states and 4876 transitions. [2020-10-29 08:23:12,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 08:23:12,147 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 134 [2020-10-29 08:23:12,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:23:12,161 INFO L225 Difference]: With dead ends: 3395 [2020-10-29 08:23:12,161 INFO L226 Difference]: Without dead ends: 2374 [2020-10-29 08:23:12,165 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 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 08:23:12,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2374 states. [2020-10-29 08:23:12,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2374 to 2365. [2020-10-29 08:23:12,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2365 states. [2020-10-29 08:23:12,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2365 states to 2365 states and 3138 transitions. [2020-10-29 08:23:12,260 INFO L78 Accepts]: Start accepts. Automaton has 2365 states and 3138 transitions. Word has length 134 [2020-10-29 08:23:12,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:23:12,261 INFO L481 AbstractCegarLoop]: Abstraction has 2365 states and 3138 transitions. [2020-10-29 08:23:12,261 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 08:23:12,261 INFO L276 IsEmpty]: Start isEmpty. Operand 2365 states and 3138 transitions. [2020-10-29 08:23:12,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-10-29 08:23:12,265 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:23:12,265 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 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 08:23:12,266 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 08:23:12,266 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:23:12,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:23:12,267 INFO L82 PathProgramCache]: Analyzing trace with hash 1904654443, now seen corresponding path program 1 times [2020-10-29 08:23:12,267 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:23:12,267 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1301060592] [2020-10-29 08:23:12,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:23:12,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:23:12,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:23:12,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:23:13,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:23:15,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:23:15,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 219 [2020-10-29 08:23:15,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:23:15,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2694 [2020-10-29 08:23:15,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:23:15,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:23:15,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 08:23:15,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:23:15,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 210 [2020-10-29 08:23:15,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:23:15,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:23:15,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:23:15,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:23:15,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:23:15,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:23:15,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:23:15,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 08:23:15,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:23:15,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:23:15,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:23:15,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:23:15,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:23:15,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:23:15,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:23:15,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:23:15,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:23:15,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:23:15,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:23:15,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:23:15,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 278 [2020-10-29 08:23:15,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:23:15,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:23:15,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 08:23:15,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:23:15,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-29 08:23:15,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 08:23:15,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 08:23:15,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:23:15,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:23:15,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:23:15,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 08:23:15,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:23:15,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-29 08:23:15,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:23:15,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:23:15,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:23:15,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:23:15,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-29 08:23:15,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 08:23:15,946 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 6 proven. 74 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-29 08:23:15,947 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1301060592] [2020-10-29 08:23:15,947 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:23:15,947 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:23:15,948 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842242277] [2020-10-29 08:23:15,949 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 08:23:15,949 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:23:15,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 08:23:15,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 08:23:15,950 INFO L87 Difference]: Start difference. First operand 2365 states and 3138 transitions. Second operand 8 states. [2020-10-29 08:23:45,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:23:45,826 INFO L93 Difference]: Finished difference Result 6154 states and 9003 transitions. [2020-10-29 08:23:45,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 08:23:45,829 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 205 [2020-10-29 08:23:45,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:23:45,857 INFO L225 Difference]: With dead ends: 6154 [2020-10-29 08:23:45,857 INFO L226 Difference]: Without dead ends: 4228 [2020-10-29 08:23:45,865 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-10-29 08:23:45,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4228 states. [2020-10-29 08:23:45,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4228 to 4202. [2020-10-29 08:23:45,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4202 states. [2020-10-29 08:23:46,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4202 states to 4202 states and 5815 transitions. [2020-10-29 08:23:46,015 INFO L78 Accepts]: Start accepts. Automaton has 4202 states and 5815 transitions. Word has length 205 [2020-10-29 08:23:46,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:23:46,016 INFO L481 AbstractCegarLoop]: Abstraction has 4202 states and 5815 transitions. [2020-10-29 08:23:46,016 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 08:23:46,016 INFO L276 IsEmpty]: Start isEmpty. Operand 4202 states and 5815 transitions. [2020-10-29 08:23:46,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2020-10-29 08:23:46,020 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:23:46,020 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:23:46,021 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 08:23:46,021 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:23:46,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:23:46,021 INFO L82 PathProgramCache]: Analyzing trace with hash 740972285, now seen corresponding path program 1 times [2020-10-29 08:23:46,022 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:23:46,022 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [325511048] [2020-10-29 08:23:46,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:23:46,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:23:46,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:23:46,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:23:46,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:23:51,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:23:51,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 234 [2020-10-29 08:23:51,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:23:51,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-29 08:23:51,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:23:51,098 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:23:51,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:23:51,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-29 08:23:51,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-29 08:23:51,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:23:51,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:23:51,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:23:51,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:23:51,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:23:51,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:23:51,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:23:51,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 08:23:51,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:23:51,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:23:51,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:23:51,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:23:51,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:23:51,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:23:51,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:23:51,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:23:51,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:23:51,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:23:51,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:23:51,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:23:51,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-29 08:23:51,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:23:51,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:23:51,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:23:51,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:23:51,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 08:23:51,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:23:51,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 08:23:51,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:23:51,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:23:51,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:23:51,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:23:51,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 08:23:51,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:23:51,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 236 [2020-10-29 08:23:51,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:23:51,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:23:51,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:23:51,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:23:51,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 08:23:51,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:23:51,775 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 76 proven. 2 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-29 08:23:51,775 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [325511048] [2020-10-29 08:23:51,776 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:23:51,777 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 08:23:51,777 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76400020] [2020-10-29 08:23:51,777 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 08:23:51,778 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:23:51,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 08:23:51,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 08:23:51,780 INFO L87 Difference]: Start difference. First operand 4202 states and 5815 transitions. Second operand 5 states. [2020-10-29 08:24:11,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:24:11,197 INFO L93 Difference]: Finished difference Result 10190 states and 14784 transitions. [2020-10-29 08:24:11,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 08:24:11,200 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 220 [2020-10-29 08:24:11,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:24:11,234 INFO L225 Difference]: With dead ends: 10190 [2020-10-29 08:24:11,235 INFO L226 Difference]: Without dead ends: 6427 [2020-10-29 08:24:11,244 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 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 08:24:11,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6427 states. [2020-10-29 08:24:11,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6427 to 5973. [2020-10-29 08:24:11,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5973 states. [2020-10-29 08:24:11,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5973 states to 5973 states and 8748 transitions. [2020-10-29 08:24:11,437 INFO L78 Accepts]: Start accepts. Automaton has 5973 states and 8748 transitions. Word has length 220 [2020-10-29 08:24:11,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:24:11,438 INFO L481 AbstractCegarLoop]: Abstraction has 5973 states and 8748 transitions. [2020-10-29 08:24:11,438 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 08:24:11,438 INFO L276 IsEmpty]: Start isEmpty. Operand 5973 states and 8748 transitions. [2020-10-29 08:24:11,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2020-10-29 08:24:11,445 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:24:11,445 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-29 08:24:11,446 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 08:24:11,446 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:24:11,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:24:11,446 INFO L82 PathProgramCache]: Analyzing trace with hash 1323415830, now seen corresponding path program 1 times [2020-10-29 08:24:11,447 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:24:11,447 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1321083775] [2020-10-29 08:24:11,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:24:11,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:24:11,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:24:11,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:24:12,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:24:13,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:24:16,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:24:16,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 298 [2020-10-29 08:24:16,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 08:24:16,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5048 [2020-10-29 08:24:16,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:24:16,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:24:16,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:24:16,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 170 [2020-10-29 08:24:16,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-29 08:24:16,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:24:16,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:24:16,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:24:16,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:24:16,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:24:16,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:24:16,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:24:16,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 08:24:16,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:24:16,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:24:16,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:24:16,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:24:16,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:24:16,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:24:16,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:24:16,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:24:16,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:24:16,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:24:16,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:24:16,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:24:16,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-29 08:24:16,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:24:16,815 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:24:16,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:24:16,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:24:16,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:24:16,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:24:16,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 08:24:16,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:24:16,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:24:16,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:24:16,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 08:24:16,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:24:16,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-29 08:24:16,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:24:16,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:24:16,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:24:16,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:24:16,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-29 08:24:16,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:24:16,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2020-10-29 08:24:16,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:24:17,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:24:17,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:24:17,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-29 08:24:17,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:24:17,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-29 08:24:17,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:24:17,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:24:17,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:24:17,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:24:17,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-29 08:24:17,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:24:17,277 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 222 proven. 40 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2020-10-29 08:24:17,277 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1321083775] [2020-10-29 08:24:17,278 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:24:17,278 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 08:24:17,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671065436] [2020-10-29 08:24:17,279 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 08:24:17,279 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:24:17,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 08:24:17,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 08:24:17,281 INFO L87 Difference]: Start difference. First operand 5973 states and 8748 transitions. Second operand 6 states. [2020-10-29 08:24:40,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:24:40,974 INFO L93 Difference]: Finished difference Result 16686 states and 26678 transitions. [2020-10-29 08:24:40,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 08:24:40,977 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 282 [2020-10-29 08:24:40,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:24:41,042 INFO L225 Difference]: With dead ends: 16686 [2020-10-29 08:24:41,043 INFO L226 Difference]: Without dead ends: 11152 [2020-10-29 08:24:41,061 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 08:24:41,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11152 states. [2020-10-29 08:24:41,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11152 to 9708. [2020-10-29 08:24:41,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9708 states. [2020-10-29 08:24:41,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9708 states to 9708 states and 13935 transitions. [2020-10-29 08:24:41,458 INFO L78 Accepts]: Start accepts. Automaton has 9708 states and 13935 transitions. Word has length 282 [2020-10-29 08:24:41,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:24:41,459 INFO L481 AbstractCegarLoop]: Abstraction has 9708 states and 13935 transitions. [2020-10-29 08:24:41,459 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 08:24:41,459 INFO L276 IsEmpty]: Start isEmpty. Operand 9708 states and 13935 transitions. [2020-10-29 08:24:41,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2020-10-29 08:24:41,467 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:24:41,467 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:24:41,467 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 08:24:41,468 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:24:41,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:24:41,468 INFO L82 PathProgramCache]: Analyzing trace with hash 781405984, now seen corresponding path program 1 times [2020-10-29 08:24:41,470 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:24:41,470 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1477023709] [2020-10-29 08:24:41,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:24:41,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:24:41,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:24:41,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:24:43,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:24:44,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:24:46,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:24:46,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 311 [2020-10-29 08:24:46,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 08:24:46,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-29 08:24:46,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:24:46,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:24:46,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 08:24:46,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:24:46,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 258 [2020-10-29 08:24:46,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:24:46,805 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 08:24:46,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:24:46,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:24:46,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:24:46,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:24:46,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:24:46,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:24:46,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 08:24:46,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:24:46,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:24:46,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:24:46,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:24:46,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:24:46,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:24:46,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:24:46,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:24:46,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:24:47,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:24:47,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:24:47,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:24:47,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 230 [2020-10-29 08:24:47,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:24:47,130 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:24:47,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 08:24:47,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:24:47,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-29 08:24:47,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:24:47,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 08:24:47,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:24:47,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:24:47,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:24:47,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 08:24:47,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:24:47,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-29 08:24:47,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:24:47,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:24:47,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:24:47,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:24:47,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-29 08:24:47,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:24:47,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-29 08:24:47,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:24:47,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:24:47,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:24:47,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 08:24:47,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:24:47,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-29 08:24:47,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:24:47,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:24:47,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:24:47,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:24:47,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 08:24:47,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:24:47,794 INFO L134 CoverageAnalysis]: Checked inductivity of 353 backedges. 125 proven. 153 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-29 08:24:47,795 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1477023709] [2020-10-29 08:24:47,795 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:24:47,795 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 08:24:47,796 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019265839] [2020-10-29 08:24:47,796 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 08:24:47,796 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:24:47,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 08:24:47,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-29 08:24:47,797 INFO L87 Difference]: Start difference. First operand 9708 states and 13935 transitions. Second operand 10 states. [2020-10-29 08:24:47,988 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-29 08:24:59,139 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-29 08:25:21,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:25:21,891 INFO L93 Difference]: Finished difference Result 25573 states and 41174 transitions. [2020-10-29 08:25:21,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-29 08:25:21,894 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 295 [2020-10-29 08:25:21,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:25:21,992 INFO L225 Difference]: With dead ends: 25573 [2020-10-29 08:25:21,992 INFO L226 Difference]: Without dead ends: 16304 [2020-10-29 08:25:22,023 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=160, Invalid=490, Unknown=0, NotChecked=0, Total=650 [2020-10-29 08:25:22,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16304 states. [2020-10-29 08:25:22,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16304 to 13894. [2020-10-29 08:25:22,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13894 states. [2020-10-29 08:25:22,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13894 states to 13894 states and 20297 transitions. [2020-10-29 08:25:22,606 INFO L78 Accepts]: Start accepts. Automaton has 13894 states and 20297 transitions. Word has length 295 [2020-10-29 08:25:22,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:25:22,607 INFO L481 AbstractCegarLoop]: Abstraction has 13894 states and 20297 transitions. [2020-10-29 08:25:22,607 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 08:25:22,608 INFO L276 IsEmpty]: Start isEmpty. Operand 13894 states and 20297 transitions. [2020-10-29 08:25:22,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2020-10-29 08:25:22,615 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:25:22,615 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:25:22,616 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 08:25:22,616 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:25:22,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:25:22,616 INFO L82 PathProgramCache]: Analyzing trace with hash -532715580, now seen corresponding path program 1 times [2020-10-29 08:25:22,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:25:22,622 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1240066106] [2020-10-29 08:25:22,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:25:22,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:25:22,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:25:22,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:25:23,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:25:24,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:25:25,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:25:26,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:25:26,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 313 [2020-10-29 08:25:26,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 08:25:26,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3578 [2020-10-29 08:25:26,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:25:26,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:25:26,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:25:26,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-29 08:25:26,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-10-29 08:25:26,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:25:26,467 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 08:25:26,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:25:26,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:25:26,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:25:26,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:25:26,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:25:26,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:25:26,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 08:25:26,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:25:26,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:25:26,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:25:26,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:25:26,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:25:26,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:25:26,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:25:26,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:25:26,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:25:26,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:25:26,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:25:26,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:25:26,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-29 08:25:26,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:25:26,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:25:26,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:25:26,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:25:26,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 08:25:26,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:25:26,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 08:25:26,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:25:26,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:25:26,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:25:26,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:25:26,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 08:25:26,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:25:26,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 227 [2020-10-29 08:25:26,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:25:26,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:25:26,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:25:26,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:25:26,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 08:25:26,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:25:26,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-29 08:25:26,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:25:27,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:25:27,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:25:27,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-29 08:25:27,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:25:27,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-29 08:25:27,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:25:27,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:25:27,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:25:27,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:25:27,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-29 08:25:27,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:25:27,266 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 265 proven. 4 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2020-10-29 08:25:27,266 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1240066106] [2020-10-29 08:25:27,267 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:25:27,267 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:25:27,268 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966565350] [2020-10-29 08:25:27,269 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:25:27,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:25:27,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:25:27,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:25:27,271 INFO L87 Difference]: Start difference. First operand 13894 states and 20297 transitions. Second operand 7 states. [2020-10-29 08:25:35,584 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 66