/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=SHALLOWEST --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/Problem18_label37.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 00:30:42,917 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 00:30:42,922 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 00:30:42,984 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 00:30:42,984 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 00:30:42,986 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 00:30:42,988 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 00:30:42,990 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 00:30:42,993 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 00:30:42,994 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 00:30:42,995 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 00:30:42,997 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 00:30:42,997 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 00:30:42,999 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 00:30:43,000 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 00:30:43,001 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 00:30:43,002 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 00:30:43,004 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 00:30:43,034 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 00:30:43,042 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 00:30:43,046 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 00:30:43,048 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 00:30:43,049 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 00:30:43,051 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 00:30:43,061 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 00:30:43,061 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 00:30:43,062 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 00:30:43,063 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 00:30:43,064 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 00:30:43,067 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 00:30:43,068 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 00:30:43,068 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 00:30:43,071 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 00:30:43,071 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 00:30:43,073 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 00:30:43,073 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 00:30:43,074 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 00:30:43,074 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 00:30:43,075 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 00:30:43,076 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 00:30:43,076 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 00:30:43,078 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 [2020-10-27 00:30:43,131 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 00:30:43,131 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 00:30:43,137 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 00:30:43,138 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 00:30:43,138 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 00:30:43,138 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 00:30:43,139 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 00:30:43,139 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 00:30:43,139 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 00:30:43,139 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 00:30:43,141 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 00:30:43,141 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 00:30:43,141 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 00:30:43,141 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 00:30:43,142 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 00:30:43,142 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 00:30:43,142 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 00:30:43,142 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 00:30:43,143 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 00:30:43,143 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 00:30:43,143 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 00:30:43,143 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 00:30:43,143 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 00:30:43,144 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 00:30:43,144 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 00:30:43,144 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 00:30:43,144 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 00:30:43,145 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 00:30:43,145 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 00:30:43,145 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 00:30:43,563 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 00:30:43,592 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 00:30:43,595 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 00:30:43,596 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 00:30:43,597 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 00:30:43,598 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label37.c [2020-10-27 00:30:43,698 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/79fddd54c/70c467f311ea4dbe8618547a363d63af/FLAG89591f180 [2020-10-27 00:30:44,713 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 00:30:44,714 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem18_label37.c [2020-10-27 00:30:44,751 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/79fddd54c/70c467f311ea4dbe8618547a363d63af/FLAG89591f180 [2020-10-27 00:30:44,802 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/79fddd54c/70c467f311ea4dbe8618547a363d63af [2020-10-27 00:30:44,806 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 00:30:44,816 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 00:30:44,818 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 00:30:44,819 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 00:30:44,823 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 00:30:44,825 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:30:44" (1/1) ... [2020-10-27 00:30:44,836 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b5540fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:30:44, skipping insertion in model container [2020-10-27 00:30:44,836 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:30:44" (1/1) ... [2020-10-27 00:30:44,848 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 00:30:44,988 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 00:30:46,137 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 00:30:46,148 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 00:30:46,727 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 00:30:46,766 INFO L208 MainTranslator]: Completed translation [2020-10-27 00:30:46,769 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:30:46 WrapperNode [2020-10-27 00:30:46,769 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 00:30:46,771 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 00:30:46,771 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 00:30:46,772 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 00:30:46,788 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:30:46" (1/1) ... [2020-10-27 00:30:46,790 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:30:46" (1/1) ... [2020-10-27 00:30:46,882 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:30:46" (1/1) ... [2020-10-27 00:30:46,882 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:30:46" (1/1) ... [2020-10-27 00:30:46,985 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:30:46" (1/1) ... [2020-10-27 00:30:47,012 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:30:46" (1/1) ... [2020-10-27 00:30:47,049 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:30:46" (1/1) ... [2020-10-27 00:30:47,082 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 00:30:47,083 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 00:30:47,083 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 00:30:47,083 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 00:30:47,084 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:30:46" (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 [2020-10-27 00:30:47,166 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 00:30:47,166 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 00:30:47,167 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 00:30:47,167 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 00:30:47,167 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 00:30:47,168 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-27 00:30:47,168 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 00:30:47,168 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 00:30:47,168 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 00:30:47,168 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-27 00:30:47,169 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 00:30:47,170 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 00:30:47,170 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 00:30:47,170 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 00:30:47,170 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 00:30:47,171 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 00:30:47,171 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 00:30:47,171 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 00:30:47,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 00:30:47,172 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 00:30:47,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 00:30:47,172 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 00:30:47,172 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 00:30:51,308 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 00:30:51,309 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 00:30:51,312 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:30:51 BoogieIcfgContainer [2020-10-27 00:30:51,313 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 00:30:51,317 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 00:30:51,317 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 00:30:51,321 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 00:30:51,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 12:30:44" (1/3) ... [2020-10-27 00:30:51,323 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2286b492 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:30:51, skipping insertion in model container [2020-10-27 00:30:51,323 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:30:46" (2/3) ... [2020-10-27 00:30:51,323 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2286b492 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:30:51, skipping insertion in model container [2020-10-27 00:30:51,323 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:30:51" (3/3) ... [2020-10-27 00:30:51,325 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem18_label37.c [2020-10-27 00:30:51,340 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 00:30:51,346 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 00:30:51,361 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 00:30:51,410 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 00:30:51,410 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 00:30:51,411 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 00:30:51,411 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 00:30:51,411 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 00:30:51,411 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 00:30:51,411 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 00:30:51,411 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 00:30:51,459 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states. [2020-10-27 00:30:51,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-27 00:30:51,472 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:30:51,473 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:30:51,474 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:30:51,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:30:51,483 INFO L82 PathProgramCache]: Analyzing trace with hash 932050680, now seen corresponding path program 1 times [2020-10-27 00:30:51,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:30:51,494 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [856818752] [2020-10-27 00:30:51,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:30:51,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:51,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:52,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:52,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 00:30:52,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:30:52,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 583 [2020-10-27 00:30:52,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:52,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:30:52,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:30:52,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-27 00:30:52,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 00:30:52,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:30:52,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:52,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:52,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:52,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:30:52,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:30:52,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-27 00:30:52,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:52,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:30:52,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:30:52,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:30:52,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:30:52,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 00:30:52,678 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [856818752] [2020-10-27 00:30:52,681 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 00:30:52,681 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 00:30:52,682 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418027591] [2020-10-27 00:30:52,688 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 00:30:52,688 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:30:52,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 00:30:52,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 00:30:52,711 INFO L87 Difference]: Start difference. First operand 778 states. Second operand 5 states. [2020-10-27 00:31:05,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:31:05,009 INFO L93 Difference]: Finished difference Result 2989 states and 5775 transitions. [2020-10-27 00:31:05,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 00:31:05,012 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 63 [2020-10-27 00:31:05,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:31:05,054 INFO L225 Difference]: With dead ends: 2989 [2020-10-27 00:31:05,056 INFO L226 Difference]: Without dead ends: 2143 [2020-10-27 00:31:05,072 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:31:05,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2143 states. [2020-10-27 00:31:05,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2143 to 2136. [2020-10-27 00:31:05,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2136 states. [2020-10-27 00:31:05,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2136 states to 2136 states and 3572 transitions. [2020-10-27 00:31:05,282 INFO L78 Accepts]: Start accepts. Automaton has 2136 states and 3572 transitions. Word has length 63 [2020-10-27 00:31:05,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:31:05,284 INFO L481 AbstractCegarLoop]: Abstraction has 2136 states and 3572 transitions. [2020-10-27 00:31:05,284 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 00:31:05,285 INFO L276 IsEmpty]: Start isEmpty. Operand 2136 states and 3572 transitions. [2020-10-27 00:31:05,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-27 00:31:05,298 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:31:05,299 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, 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] [2020-10-27 00:31:05,300 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 00:31:05,300 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:31:05,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:31:05,302 INFO L82 PathProgramCache]: Analyzing trace with hash -261449859, now seen corresponding path program 1 times [2020-10-27 00:31:05,302 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:31:05,303 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1576011130] [2020-10-27 00:31:05,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:31:05,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:05,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:05,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:06,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:06,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-27 00:31:06,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:31:06,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 990 [2020-10-27 00:31:06,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:06,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:31:06,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:31:06,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-27 00:31:06,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:31:06,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:31:06,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:06,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:06,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:06,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:31:06,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:06,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 00:31:06,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:06,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:31:06,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:06,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:31:06,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:06,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:31:06,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:06,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:06,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:06,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-27 00:31:06,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:06,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-27 00:31:06,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:06,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:31:06,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:31:06,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-27 00:31:06,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:06,643 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 00:31:06,643 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1576011130] [2020-10-27 00:31:06,644 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 00:31:06,644 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 00:31:06,644 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123437732] [2020-10-27 00:31:06,646 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:31:06,646 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:31:06,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:31:06,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:31:06,650 INFO L87 Difference]: Start difference. First operand 2136 states and 3572 transitions. Second operand 7 states. [2020-10-27 00:31:15,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:31:15,228 INFO L93 Difference]: Finished difference Result 5043 states and 8269 transitions. [2020-10-27 00:31:15,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 00:31:15,229 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 134 [2020-10-27 00:31:15,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:31:15,248 INFO L225 Difference]: With dead ends: 5043 [2020-10-27 00:31:15,248 INFO L226 Difference]: Without dead ends: 2913 [2020-10-27 00:31:15,254 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-27 00:31:15,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2913 states. [2020-10-27 00:31:15,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2913 to 2882. [2020-10-27 00:31:15,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2882 states. [2020-10-27 00:31:15,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2882 states to 2882 states and 4536 transitions. [2020-10-27 00:31:15,360 INFO L78 Accepts]: Start accepts. Automaton has 2882 states and 4536 transitions. Word has length 134 [2020-10-27 00:31:15,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:31:15,360 INFO L481 AbstractCegarLoop]: Abstraction has 2882 states and 4536 transitions. [2020-10-27 00:31:15,361 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:31:15,361 INFO L276 IsEmpty]: Start isEmpty. Operand 2882 states and 4536 transitions. [2020-10-27 00:31:15,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-10-27 00:31:15,364 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:31:15,365 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:31:15,365 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 00:31:15,365 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:31:15,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:31:15,366 INFO L82 PathProgramCache]: Analyzing trace with hash 1273676356, now seen corresponding path program 1 times [2020-10-27 00:31:15,366 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:31:15,367 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [839398648] [2020-10-27 00:31:15,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:31:15,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:15,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:15,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:15,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:17,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:20,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:20,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 218 [2020-10-27 00:31:20,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 00:31:20,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 00:31:20,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:20,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:31:20,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:31:20,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-27 00:31:20,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:20,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:31:20,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:20,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:20,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:20,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:31:20,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:20,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 00:31:20,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:20,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:31:20,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:20,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:31:20,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:31:20,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:31:20,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:20,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:20,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:20,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 00:31:20,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:20,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-27 00:31:20,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:20,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:31:20,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:31:20,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-27 00:31:20,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:20,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-27 00:31:20,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:20,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:20,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:20,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-27 00:31:20,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:20,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 00:31:20,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:20,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:31:20,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-27 00:31:20,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:31:20,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:20,821 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 110 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-27 00:31:20,822 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [839398648] [2020-10-27 00:31:20,822 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:31:20,822 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:31:20,823 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19353781] [2020-10-27 00:31:20,825 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:31:20,825 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:31:20,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:31:20,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:31:20,827 INFO L87 Difference]: Start difference. First operand 2882 states and 4536 transitions. Second operand 7 states. [2020-10-27 00:31:30,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:31:30,538 INFO L93 Difference]: Finished difference Result 8777 states and 14028 transitions. [2020-10-27 00:31:30,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 00:31:30,544 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 204 [2020-10-27 00:31:30,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:31:30,580 INFO L225 Difference]: With dead ends: 8777 [2020-10-27 00:31:30,580 INFO L226 Difference]: Without dead ends: 5901 [2020-10-27 00:31:30,589 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:31:30,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5901 states. [2020-10-27 00:31:30,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5901 to 5096. [2020-10-27 00:31:30,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5096 states. [2020-10-27 00:31:30,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5096 states to 5096 states and 7139 transitions. [2020-10-27 00:31:30,788 INFO L78 Accepts]: Start accepts. Automaton has 5096 states and 7139 transitions. Word has length 204 [2020-10-27 00:31:30,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:31:30,791 INFO L481 AbstractCegarLoop]: Abstraction has 5096 states and 7139 transitions. [2020-10-27 00:31:30,791 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:31:30,791 INFO L276 IsEmpty]: Start isEmpty. Operand 5096 states and 7139 transitions. [2020-10-27 00:31:30,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2020-10-27 00:31:30,798 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:31:30,798 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:31:30,798 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 00:31:30,803 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:31:30,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:31:30,804 INFO L82 PathProgramCache]: Analyzing trace with hash 2063129116, now seen corresponding path program 1 times [2020-10-27 00:31:30,804 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:31:30,804 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [430893992] [2020-10-27 00:31:30,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:31:30,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:30,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:31,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:31,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:31,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-27 00:31:31,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:31:31,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1100 [2020-10-27 00:31:31,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:31,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:31:31,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:31:31,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-27 00:31:31,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:32,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:31:32,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:32,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:32,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:32,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:31:32,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:32,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 00:31:32,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:32,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:31:32,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:32,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:31:32,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:32,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:31:32,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:32,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:32,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:32,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-27 00:31:32,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:32,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-27 00:31:32,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:32,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:31:32,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:31:32,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-27 00:31:32,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-27 00:31:32,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-27 00:31:32,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:32,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:32,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:32,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-27 00:31:32,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:32,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-27 00:31:32,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:32,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:31:32,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-27 00:31:32,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:31:32,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:32,381 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 110 proven. 66 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-27 00:31:32,382 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [430893992] [2020-10-27 00:31:32,382 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:31:32,382 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:31:32,383 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18359859] [2020-10-27 00:31:32,383 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:31:32,384 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:31:32,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:31:32,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:31:32,385 INFO L87 Difference]: Start difference. First operand 5096 states and 7139 transitions. Second operand 7 states. [2020-10-27 00:31:41,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:31:41,711 INFO L93 Difference]: Finished difference Result 11914 states and 16462 transitions. [2020-10-27 00:31:41,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 00:31:41,712 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 224 [2020-10-27 00:31:41,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:31:41,744 INFO L225 Difference]: With dead ends: 11914 [2020-10-27 00:31:41,744 INFO L226 Difference]: Without dead ends: 6824 [2020-10-27 00:31:41,756 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-27 00:31:41,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6824 states. [2020-10-27 00:31:41,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6824 to 6576. [2020-10-27 00:31:41,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6576 states. [2020-10-27 00:31:41,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6576 states to 6576 states and 8740 transitions. [2020-10-27 00:31:41,949 INFO L78 Accepts]: Start accepts. Automaton has 6576 states and 8740 transitions. Word has length 224 [2020-10-27 00:31:41,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:31:41,951 INFO L481 AbstractCegarLoop]: Abstraction has 6576 states and 8740 transitions. [2020-10-27 00:31:41,951 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:31:41,951 INFO L276 IsEmpty]: Start isEmpty. Operand 6576 states and 8740 transitions. [2020-10-27 00:31:41,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2020-10-27 00:31:41,955 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:31:41,955 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:31:41,956 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 00:31:41,956 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:31:41,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:31:41,958 INFO L82 PathProgramCache]: Analyzing trace with hash 939895716, now seen corresponding path program 1 times [2020-10-27 00:31:41,959 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:31:41,959 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1864229813] [2020-10-27 00:31:41,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:31:41,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:42,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:42,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:42,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:44,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:47,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:47,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 245 [2020-10-27 00:31:47,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 00:31:47,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-27 00:31:47,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:47,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:31:47,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:31:47,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-27 00:31:47,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:47,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:31:47,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:47,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:47,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:47,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:31:47,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:47,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 00:31:47,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:47,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:31:47,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:47,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:31:47,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:47,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:31:47,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:47,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:47,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:47,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-27 00:31:47,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:47,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-27 00:31:47,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:47,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:31:47,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:31:47,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-27 00:31:47,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 00:31:47,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-27 00:31:47,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:47,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:47,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:47,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-27 00:31:47,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:47,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 00:31:47,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:47,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:31:47,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-27 00:31:47,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:31:47,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:47,745 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 110 proven. 66 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-27 00:31:47,745 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1864229813] [2020-10-27 00:31:47,746 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:31:47,746 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:31:47,747 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437913493] [2020-10-27 00:31:47,747 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:31:47,748 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:31:47,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:31:47,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:31:47,749 INFO L87 Difference]: Start difference. First operand 6576 states and 8740 transitions. Second operand 7 states. [2020-10-27 00:32:00,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:32:00,053 INFO L93 Difference]: Finished difference Result 16887 states and 23301 transitions. [2020-10-27 00:32:00,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 00:32:00,054 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 231 [2020-10-27 00:32:00,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:32:00,103 INFO L225 Difference]: With dead ends: 16887 [2020-10-27 00:32:00,103 INFO L226 Difference]: Without dead ends: 11737 [2020-10-27 00:32:00,118 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-27 00:32:00,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11737 states. [2020-10-27 00:32:00,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11737 to 10235. [2020-10-27 00:32:00,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10235 states. [2020-10-27 00:32:00,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10235 states to 10235 states and 12916 transitions. [2020-10-27 00:32:00,423 INFO L78 Accepts]: Start accepts. Automaton has 10235 states and 12916 transitions. Word has length 231 [2020-10-27 00:32:00,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:32:00,423 INFO L481 AbstractCegarLoop]: Abstraction has 10235 states and 12916 transitions. [2020-10-27 00:32:00,423 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:32:00,423 INFO L276 IsEmpty]: Start isEmpty. Operand 10235 states and 12916 transitions. [2020-10-27 00:32:00,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2020-10-27 00:32:00,432 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:32:00,433 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:32:00,433 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 00:32:00,433 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:32:00,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:32:00,434 INFO L82 PathProgramCache]: Analyzing trace with hash -1693742995, now seen corresponding path program 1 times [2020-10-27 00:32:00,434 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:32:00,435 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1841108786] [2020-10-27 00:32:00,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:32:00,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:00,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:00,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:00,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:01,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:03,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:05,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:05,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 434 [2020-10-27 00:32:05,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 00:32:05,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-27 00:32:05,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:05,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 00:32:05,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:32:05,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 348 [2020-10-27 00:32:05,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:05,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:32:05,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:05,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:05,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:05,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:32:05,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:05,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 00:32:05,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:05,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:32:05,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:05,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:32:05,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:05,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:32:05,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:05,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:06,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:06,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-27 00:32:06,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:06,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 339 [2020-10-27 00:32:06,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:06,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:32:06,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:32:06,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 187 [2020-10-27 00:32:06,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:06,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-27 00:32:06,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:06,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:06,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:06,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-27 00:32:06,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:06,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-10-27 00:32:06,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:06,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 00:32:06,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:32:06,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-27 00:32:06,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:06,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-10-27 00:32:06,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:06,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:06,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:06,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:06,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 00:32:06,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:32:06,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-27 00:32:06,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:06,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:32:06,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:32:06,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-27 00:32:06,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:07,921 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 312 proven. 88 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-27 00:32:07,922 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1841108786] [2020-10-27 00:32:07,923 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:32:07,923 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-27 00:32:07,924 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452399614] [2020-10-27 00:32:07,925 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 00:32:07,925 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:32:07,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 00:32:07,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-27 00:32:07,926 INFO L87 Difference]: Start difference. First operand 10235 states and 12916 transitions. Second operand 11 states. [2020-10-27 00:32:08,487 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 77 [2020-10-27 00:32:09,277 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 47 [2020-10-27 00:32:13,456 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 47 [2020-10-27 00:32:25,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:32:25,554 INFO L93 Difference]: Finished difference Result 23221 states and 31329 transitions. [2020-10-27 00:32:25,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-27 00:32:25,556 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 418 [2020-10-27 00:32:25,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:32:25,610 INFO L225 Difference]: With dead ends: 23221 [2020-10-27 00:32:25,610 INFO L226 Difference]: Without dead ends: 14969 [2020-10-27 00:32:25,634 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=209, Invalid=661, Unknown=0, NotChecked=0, Total=870 [2020-10-27 00:32:25,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14969 states. [2020-10-27 00:32:25,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14969 to 14613. [2020-10-27 00:32:25,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14613 states. [2020-10-27 00:32:26,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14613 states to 14613 states and 17678 transitions. [2020-10-27 00:32:26,016 INFO L78 Accepts]: Start accepts. Automaton has 14613 states and 17678 transitions. Word has length 418 [2020-10-27 00:32:26,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:32:26,016 INFO L481 AbstractCegarLoop]: Abstraction has 14613 states and 17678 transitions. [2020-10-27 00:32:26,016 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 00:32:26,016 INFO L276 IsEmpty]: Start isEmpty. Operand 14613 states and 17678 transitions. [2020-10-27 00:32:26,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 466 [2020-10-27 00:32:26,028 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:32:26,029 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:32:26,029 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 00:32:26,029 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:32:26,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:32:26,030 INFO L82 PathProgramCache]: Analyzing trace with hash -580814077, now seen corresponding path program 1 times [2020-10-27 00:32:26,030 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:32:26,030 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [858979951] [2020-10-27 00:32:26,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:32:26,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:26,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:26,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:26,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:27,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:28,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:31,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:31,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 481 [2020-10-27 00:32:31,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 00:32:31,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-27 00:32:31,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:31,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:32:31,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 196 [2020-10-27 00:32:31,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-27 00:32:31,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:31,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:32:31,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:31,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:31,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:31,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:32:31,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:31,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 00:32:31,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:31,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:32:31,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:31,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:32:31,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:31,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:32:31,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:31,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:31,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:31,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-27 00:32:31,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:31,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-27 00:32:31,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:31,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:32:31,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:31,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 181 [2020-10-27 00:32:31,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:31,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-27 00:32:31,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:31,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:31,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:31,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:31,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 00:32:31,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:32:31,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 309 [2020-10-27 00:32:31,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:31,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:32:31,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:32:31,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-27 00:32:31,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:31,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2020-10-27 00:32:31,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:32,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:32,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:32,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-27 00:32:32,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:32,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-27 00:32:32,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:32,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:32:32,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-27 00:32:32,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:32:32,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:32,365 INFO L134 CoverageAnalysis]: Checked inductivity of 475 backedges. 288 proven. 93 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2020-10-27 00:32:32,365 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [858979951] [2020-10-27 00:32:32,365 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:32:32,366 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:32:32,366 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283651970] [2020-10-27 00:32:32,367 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:32:32,367 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:32:32,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:32:32,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:32:32,368 INFO L87 Difference]: Start difference. First operand 14613 states and 17678 transitions. Second operand 7 states. [2020-10-27 00:32:43,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:32:43,108 INFO L93 Difference]: Finished difference Result 28858 states and 35182 transitions. [2020-10-27 00:32:43,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 00:32:43,114 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 465 [2020-10-27 00:32:43,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:32:43,168 INFO L225 Difference]: With dead ends: 28858 [2020-10-27 00:32:43,168 INFO L226 Difference]: Without dead ends: 14627 [2020-10-27 00:32:43,199 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:32:43,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14627 states. [2020-10-27 00:32:43,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14627 to 13121. [2020-10-27 00:32:43,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13121 states. [2020-10-27 00:32:43,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13121 states to 13121 states and 15101 transitions. [2020-10-27 00:32:43,486 INFO L78 Accepts]: Start accepts. Automaton has 13121 states and 15101 transitions. Word has length 465 [2020-10-27 00:32:43,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:32:43,487 INFO L481 AbstractCegarLoop]: Abstraction has 13121 states and 15101 transitions. [2020-10-27 00:32:43,487 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:32:43,487 INFO L276 IsEmpty]: Start isEmpty. Operand 13121 states and 15101 transitions. [2020-10-27 00:32:43,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 550 [2020-10-27 00:32:43,504 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:32:43,504 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, 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:32:43,505 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 00:32:43,505 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:32:43,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:32:43,505 INFO L82 PathProgramCache]: Analyzing trace with hash 743846705, now seen corresponding path program 1 times [2020-10-27 00:32:43,506 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:32:43,506 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [685520702] [2020-10-27 00:32:43,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:32:43,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:43,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:43,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:43,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:45,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:48,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:48,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 567 [2020-10-27 00:32:48,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 00:32:48,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5054 [2020-10-27 00:32:48,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:48,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 00:32:48,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:32:48,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 312 [2020-10-27 00:32:48,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:48,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:32:48,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:48,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:48,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:48,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:32:48,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:48,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 00:32:48,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:48,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:32:48,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:48,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:32:48,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:48,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:32:48,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:48,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:49,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:49,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:32:49,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:49,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 583 [2020-10-27 00:32:49,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:49,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:32:49,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:32:49,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 310 [2020-10-27 00:32:49,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:49,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:32:49,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:49,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:49,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:49,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:32:49,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:49,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-27 00:32:49,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:49,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 00:32:49,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:32:49,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 00:32:49,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:49,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-10-27 00:32:49,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:49,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:49,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:49,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-27 00:32:49,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:49,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 00:32:49,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:49,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:32:49,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-27 00:32:49,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:32:49,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:49,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-27 00:32:49,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:49,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:49,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:49,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-27 00:32:49,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:49,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 00:32:49,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:49,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:32:49,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-10-27 00:32:49,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:32:49,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:50,138 INFO L134 CoverageAnalysis]: Checked inductivity of 433 backedges. 165 proven. 169 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2020-10-27 00:32:50,139 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [685520702] [2020-10-27 00:32:50,139 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:32:50,139 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 00:32:50,139 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781032518] [2020-10-27 00:32:50,140 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 00:32:50,140 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:32:50,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 00:32:50,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-27 00:32:50,141 INFO L87 Difference]: Start difference. First operand 13121 states and 15101 transitions. Second operand 8 states. [2020-10-27 00:32:59,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:32:59,573 INFO L93 Difference]: Finished difference Result 33678 states and 39906 transitions. [2020-10-27 00:32:59,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 00:32:59,575 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 549 [2020-10-27 00:32:59,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:32:59,629 INFO L225 Difference]: With dead ends: 33678 [2020-10-27 00:32:59,630 INFO L226 Difference]: Without dead ends: 21265 [2020-10-27 00:32:59,655 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-27 00:32:59,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21265 states. [2020-10-27 00:33:00,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21265 to 20434. [2020-10-27 00:33:00,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20434 states. [2020-10-27 00:33:00,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20434 states to 20434 states and 23459 transitions. [2020-10-27 00:33:00,073 INFO L78 Accepts]: Start accepts. Automaton has 20434 states and 23459 transitions. Word has length 549 [2020-10-27 00:33:00,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:33:00,074 INFO L481 AbstractCegarLoop]: Abstraction has 20434 states and 23459 transitions. [2020-10-27 00:33:00,074 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 00:33:00,074 INFO L276 IsEmpty]: Start isEmpty. Operand 20434 states and 23459 transitions. [2020-10-27 00:33:00,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1077 [2020-10-27 00:33:00,130 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:33:00,131 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:33:00,132 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 00:33:00,132 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:33:00,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:33:00,133 INFO L82 PathProgramCache]: Analyzing trace with hash -445871022, now seen corresponding path program 1 times [2020-10-27 00:33:00,133 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:33:00,134 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1307448972] [2020-10-27 00:33:00,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:33:00,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:00,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:00,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:01,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:05,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:05,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1100 [2020-10-27 00:33:05,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:33:05,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5082 [2020-10-27 00:33:05,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:05,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:33:05,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 849 [2020-10-27 00:33:05,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-27 00:33:05,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:05,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:33:05,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:05,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:05,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:05,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:33:05,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:33:05,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 00:33:05,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:05,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:33:05,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:33:05,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:33:05,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:05,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:33:05,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:05,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:05,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:05,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-27 00:33:05,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:33:05,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-27 00:33:05,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:05,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:33:05,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:33:05,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:33:05,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:05,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:33:05,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:05,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:05,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:05,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-27 00:33:05,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:33:05,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-27 00:33:05,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:05,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:33:05,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:33:05,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:33:05,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:06,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 00:33:06,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:06,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:06,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:06,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 00:33:06,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:33:06,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 00:33:06,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:06,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:33:06,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:33:06,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:33:06,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:06,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-27 00:33:06,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:06,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:06,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:06,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:33:06,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:33:06,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-27 00:33:06,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:06,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:33:06,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:33:06,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-27 00:33:06,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:06,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:33:06,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:06,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:06,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:06,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:33:06,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:33:06,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 00:33:06,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:06,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:33:06,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:33:06,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 00:33:06,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:06,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-27 00:33:06,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:06,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:06,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:06,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-27 00:33:06,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:33:06,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-27 00:33:06,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:06,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:33:06,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:33:06,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-27 00:33:06,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:06,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 932 [2020-10-27 00:33:06,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:06,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:06,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:06,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-27 00:33:06,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:33:06,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-27 00:33:06,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:06,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:33:06,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-10-27 00:33:06,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:33:06,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:07,474 INFO L134 CoverageAnalysis]: Checked inductivity of 974 backedges. 410 proven. 88 refuted. 0 times theorem prover too weak. 476 trivial. 0 not checked. [2020-10-27 00:33:07,474 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1307448972] [2020-10-27 00:33:07,474 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:33:07,475 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:33:07,475 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444630892] [2020-10-27 00:33:07,476 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:33:07,477 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:33:07,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:33:07,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:33:07,477 INFO L87 Difference]: Start difference. First operand 20434 states and 23459 transitions. Second operand 7 states. [2020-10-27 00:33:17,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:33:17,215 INFO L93 Difference]: Finished difference Result 46843 states and 55958 transitions. [2020-10-27 00:33:17,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 00:33:17,218 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1076 [2020-10-27 00:33:17,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:33:17,310 INFO L225 Difference]: With dead ends: 46843 [2020-10-27 00:33:17,310 INFO L226 Difference]: Without dead ends: 27827 [2020-10-27 00:33:17,346 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:33:17,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27827 states. [2020-10-27 00:33:17,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27827 to 27042. [2020-10-27 00:33:17,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27042 states. [2020-10-27 00:33:17,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27042 states to 27042 states and 31709 transitions. [2020-10-27 00:33:17,872 INFO L78 Accepts]: Start accepts. Automaton has 27042 states and 31709 transitions. Word has length 1076 [2020-10-27 00:33:17,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:33:17,873 INFO L481 AbstractCegarLoop]: Abstraction has 27042 states and 31709 transitions. [2020-10-27 00:33:17,874 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:33:17,874 INFO L276 IsEmpty]: Start isEmpty. Operand 27042 states and 31709 transitions. [2020-10-27 00:33:17,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1187 [2020-10-27 00:33:17,897 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:33:17,898 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:33:17,899 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 00:33:17,899 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:33:17,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:33:17,900 INFO L82 PathProgramCache]: Analyzing trace with hash 961312238, now seen corresponding path program 1 times [2020-10-27 00:33:17,900 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:33:17,900 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1175510244] [2020-10-27 00:33:17,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:33:18,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:18,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:18,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:20,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:23,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:23,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1210 [2020-10-27 00:33:23,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:33:23,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5077 [2020-10-27 00:33:23,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:23,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:33:23,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 849 [2020-10-27 00:33:23,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-27 00:33:23,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:23,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:33:23,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:23,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:23,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:23,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:33:23,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:33:23,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 00:33:23,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:23,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:33:23,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:33:23,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:33:23,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:23,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:33:23,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:23,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:23,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:23,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-27 00:33:23,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:33:23,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-27 00:33:23,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:23,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:33:23,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:33:23,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:33:23,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:23,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:33:23,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:23,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:23,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:23,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-27 00:33:23,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:33:23,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-27 00:33:23,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:23,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:33:23,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:33:23,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:33:23,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:23,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 00:33:23,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:23,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:23,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:23,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 00:33:23,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:33:23,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 00:33:23,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:23,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:33:23,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:33:23,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:33:23,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:24,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-27 00:33:24,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:24,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:24,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:24,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:33:24,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:33:24,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-10-27 00:33:24,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:24,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:33:24,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:33:24,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-27 00:33:24,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:24,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:33:24,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:24,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:24,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:24,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:33:24,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:33:24,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 00:33:24,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:24,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:33:24,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:33:24,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 00:33:24,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:24,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-27 00:33:24,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:24,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:24,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:24,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 00:33:24,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:33:24,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-27 00:33:24,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:24,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:33:24,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:33:24,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-27 00:33:24,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:24,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 964 [2020-10-27 00:33:24,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:24,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:24,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:24,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-27 00:33:24,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:33:24,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-27 00:33:24,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:24,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:33:24,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 165 [2020-10-27 00:33:24,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:33:24,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:25,504 INFO L134 CoverageAnalysis]: Checked inductivity of 1227 backedges. 474 proven. 121 refuted. 0 times theorem prover too weak. 632 trivial. 0 not checked. [2020-10-27 00:33:25,504 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1175510244] [2020-10-27 00:33:25,505 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:33:25,505 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:33:25,505 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829223109] [2020-10-27 00:33:25,506 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:33:25,507 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:33:25,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:33:25,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:33:25,508 INFO L87 Difference]: Start difference. First operand 27042 states and 31709 transitions. Second operand 7 states. [2020-10-27 00:33:39,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:33:39,966 INFO L93 Difference]: Finished difference Result 57813 states and 68431 transitions. [2020-10-27 00:33:39,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 00:33:39,968 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1186 [2020-10-27 00:33:39,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:33:40,059 INFO L225 Difference]: With dead ends: 57813 [2020-10-27 00:33:40,059 INFO L226 Difference]: Without dead ends: 32189 [2020-10-27 00:33:40,101 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:33:40,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32189 states. [2020-10-27 00:33:40,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32189 to 32059. [2020-10-27 00:33:40,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32059 states. [2020-10-27 00:33:40,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32059 states to 32059 states and 37240 transitions. [2020-10-27 00:33:40,732 INFO L78 Accepts]: Start accepts. Automaton has 32059 states and 37240 transitions. Word has length 1186 [2020-10-27 00:33:40,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:33:40,734 INFO L481 AbstractCegarLoop]: Abstraction has 32059 states and 37240 transitions. [2020-10-27 00:33:40,734 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:33:40,734 INFO L276 IsEmpty]: Start isEmpty. Operand 32059 states and 37240 transitions. [2020-10-27 00:33:40,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1260 [2020-10-27 00:33:40,769 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:33:40,770 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:33:40,771 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 00:33:40,771 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:33:40,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:33:40,772 INFO L82 PathProgramCache]: Analyzing trace with hash -21461981, now seen corresponding path program 1 times [2020-10-27 00:33:40,772 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:33:40,772 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [250228123] [2020-10-27 00:33:40,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:33:40,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:41,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:41,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:42,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:43,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:46,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:46,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1285 [2020-10-27 00:33:46,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 00:33:46,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-27 00:33:46,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:46,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:33:46,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 849 [2020-10-27 00:33:46,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-27 00:33:46,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:46,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:33:46,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:46,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:46,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:46,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:33:46,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:33:46,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 00:33:46,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:46,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:33:46,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:33:46,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:33:46,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:46,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:33:46,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:46,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:46,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:46,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-27 00:33:46,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:33:46,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-27 00:33:46,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:46,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:33:46,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:33:46,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:33:46,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:46,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:33:46,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:46,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:46,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:46,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-27 00:33:46,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:33:46,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-27 00:33:46,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:46,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:33:46,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:33:46,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:33:46,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:46,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 00:33:46,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:46,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:46,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:46,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 00:33:46,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:33:46,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 00:33:46,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:46,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:33:46,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:33:46,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:33:46,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:46,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-27 00:33:46,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:46,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:47,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:47,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:33:47,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:33:47,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 219 [2020-10-27 00:33:47,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:47,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:33:47,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:33:47,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-27 00:33:47,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:47,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:33:47,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:47,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:47,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:47,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:33:47,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:33:47,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 00:33:47,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:47,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:33:47,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:33:47,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 00:33:47,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:47,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-27 00:33:47,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:47,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:47,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:47,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-27 00:33:47,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:33:47,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-27 00:33:47,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:47,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:33:47,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:33:47,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-27 00:33:47,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:47,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 918 [2020-10-27 00:33:47,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:47,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:47,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:47,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-27 00:33:47,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:33:47,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 00:33:47,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:47,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:33:47,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-27 00:33:47,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:33:47,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:47,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1015 [2020-10-27 00:33:47,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:47,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:47,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:47,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-10-27 00:33:47,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:33:47,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-27 00:33:47,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:47,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:33:47,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 187 [2020-10-27 00:33:47,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:33:47,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:48,128 INFO L134 CoverageAnalysis]: Checked inductivity of 1555 backedges. 445 proven. 148 refuted. 0 times theorem prover too weak. 962 trivial. 0 not checked. [2020-10-27 00:33:48,128 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [250228123] [2020-10-27 00:33:48,128 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:33:48,128 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:33:48,128 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574451934] [2020-10-27 00:33:48,129 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:33:48,129 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:33:48,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:33:48,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:33:48,130 INFO L87 Difference]: Start difference. First operand 32059 states and 37240 transitions. Second operand 7 states. [2020-10-27 00:33:58,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:33:58,813 INFO L93 Difference]: Finished difference Result 80636 states and 96167 transitions. [2020-10-27 00:33:58,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 00:33:58,814 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1259 [2020-10-27 00:33:58,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:33:58,977 INFO L225 Difference]: With dead ends: 80636 [2020-10-27 00:33:58,978 INFO L226 Difference]: Without dead ends: 49995 [2020-10-27 00:33:59,023 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:33:59,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49995 states. [2020-10-27 00:33:59,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49995 to 49244. [2020-10-27 00:33:59,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49244 states. [2020-10-27 00:34:00,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49244 states to 49244 states and 58501 transitions. [2020-10-27 00:34:00,109 INFO L78 Accepts]: Start accepts. Automaton has 49244 states and 58501 transitions. Word has length 1259 [2020-10-27 00:34:00,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:34:00,110 INFO L481 AbstractCegarLoop]: Abstraction has 49244 states and 58501 transitions. [2020-10-27 00:34:00,111 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:34:00,111 INFO L276 IsEmpty]: Start isEmpty. Operand 49244 states and 58501 transitions. [2020-10-27 00:34:00,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1327 [2020-10-27 00:34:00,143 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:34:00,144 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:34:00,145 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 00:34:00,145 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:34:00,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:34:00,146 INFO L82 PathProgramCache]: Analyzing trace with hash 1782603511, now seen corresponding path program 1 times [2020-10-27 00:34:00,146 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:34:00,146 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [415619163] [2020-10-27 00:34:00,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:34:00,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:34:01,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:34:01,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:34:02,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:34:06,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:34:06,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1352 [2020-10-27 00:34:06,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:34:06,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5060 [2020-10-27 00:34:06,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:34:06,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:34:06,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 997 [2020-10-27 00:34:06,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-27 00:34:06,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:34:06,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:34:06,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:34:06,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:34:06,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:34:06,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:34:06,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:34:06,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 00:34:06,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:34:06,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:34:06,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:34:06,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:34:06,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:34:06,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:34:06,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:34:06,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:34:06,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:34:06,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-27 00:34:06,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:34:06,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-27 00:34:06,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:34:06,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:34:06,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:34:06,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:34:06,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:34:06,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:34:06,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:34:06,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:34:06,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:34:06,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-27 00:34:06,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:34:06,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-27 00:34:06,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:34:06,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:34:06,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:34:06,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:34:06,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:34:06,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 00:34:06,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:34:06,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:34:06,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:34:06,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 00:34:06,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:34:06,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 00:34:06,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:34:06,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:34:06,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:34:06,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:34:06,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:34:06,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-27 00:34:06,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:34:06,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:34:07,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:34:07,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:34:07,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:34:07,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-27 00:34:07,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:34:07,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:34:07,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:34:07,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:34:07,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:34:07,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:34:07,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:34:07,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:34:07,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:34:07,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:34:07,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:34:07,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 00:34:07,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:34:07,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:34:07,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:34:07,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:34:07,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:34:07,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-27 00:34:07,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:34:07,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:34:07,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:34:07,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-27 00:34:07,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:34:07,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-27 00:34:07,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:34:07,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:34:07,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:34:07,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-27 00:34:07,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:34:07,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 985 [2020-10-27 00:34:07,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:34:07,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:34:07,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:34:07,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-27 00:34:07,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:34:07,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-27 00:34:07,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:34:07,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:34:07,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:34:07,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-27 00:34:07,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:34:07,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1082 [2020-10-27 00:34:07,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:34:07,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:34:07,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:34:07,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-10-27 00:34:07,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:34:07,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-27 00:34:07,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:34:07,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:34:07,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 187 [2020-10-27 00:34:07,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:34:07,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:34:08,517 INFO L134 CoverageAnalysis]: Checked inductivity of 1777 backedges. 579 proven. 96 refuted. 0 times theorem prover too weak. 1102 trivial. 0 not checked. [2020-10-27 00:34:08,517 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [415619163] [2020-10-27 00:34:08,518 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:34:08,518 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:34:08,518 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433535191] [2020-10-27 00:34:08,519 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:34:08,519 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:34:08,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:34:08,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:34:08,520 INFO L87 Difference]: Start difference. First operand 49244 states and 58501 transitions. Second operand 7 states.