/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/Problem15_label53.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 23:48:05,984 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 23:48:05,988 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 23:48:06,033 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 23:48:06,033 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 23:48:06,035 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 23:48:06,037 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 23:48:06,040 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 23:48:06,043 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 23:48:06,045 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 23:48:06,046 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 23:48:06,048 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 23:48:06,049 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 23:48:06,051 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 23:48:06,052 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 23:48:06,054 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 23:48:06,056 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 23:48:06,058 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 23:48:06,081 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 23:48:06,085 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 23:48:06,089 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 23:48:06,096 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 23:48:06,098 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 23:48:06,101 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 23:48:06,113 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 23:48:06,114 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 23:48:06,114 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 23:48:06,119 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 23:48:06,120 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 23:48:06,123 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 23:48:06,124 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 23:48:06,125 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 23:48:06,126 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 23:48:06,128 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 23:48:06,130 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 23:48:06,130 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 23:48:06,131 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 23:48:06,132 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 23:48:06,132 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 23:48:06,134 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 23:48:06,135 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 23:48:06,136 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 [2020-10-26 23:48:06,207 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 23:48:06,208 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 23:48:06,215 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 23:48:06,215 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 23:48:06,216 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 23:48:06,216 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 23:48:06,217 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 23:48:06,217 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 23:48:06,218 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 23:48:06,218 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 23:48:06,219 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 23:48:06,220 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 23:48:06,220 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 23:48:06,220 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 23:48:06,220 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 23:48:06,220 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 23:48:06,221 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 23:48:06,221 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 23:48:06,222 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 23:48:06,222 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 23:48:06,222 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 23:48:06,223 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 23:48:06,223 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 23:48:06,223 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 23:48:06,223 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 23:48:06,224 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 23:48:06,224 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 23:48:06,224 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 23:48:06,224 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 23:48:06,225 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 23:48:06,743 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 23:48:06,776 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 23:48:06,780 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 23:48:06,782 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 23:48:06,783 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 23:48:06,785 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label53.c [2020-10-26 23:48:06,880 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cd40a8c2b/e0d36ee0419b413da5e12604474aeac7/FLAGf63028a10 [2020-10-26 23:48:07,843 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 23:48:07,844 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label53.c [2020-10-26 23:48:07,876 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cd40a8c2b/e0d36ee0419b413da5e12604474aeac7/FLAGf63028a10 [2020-10-26 23:48:08,404 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cd40a8c2b/e0d36ee0419b413da5e12604474aeac7 [2020-10-26 23:48:08,409 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 23:48:08,419 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 23:48:08,423 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 23:48:08,423 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 23:48:08,428 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 23:48:08,429 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:48:08" (1/1) ... [2020-10-26 23:48:08,437 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d444718 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:48:08, skipping insertion in model container [2020-10-26 23:48:08,437 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:48:08" (1/1) ... [2020-10-26 23:48:08,447 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 23:48:08,574 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 23:48:09,514 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:48:09,526 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 23:48:09,771 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:48:09,794 INFO L208 MainTranslator]: Completed translation [2020-10-26 23:48:09,795 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:48:09 WrapperNode [2020-10-26 23:48:09,795 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 23:48:09,797 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 23:48:09,797 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 23:48:09,798 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 23:48:09,815 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:48:09" (1/1) ... [2020-10-26 23:48:09,815 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:48:09" (1/1) ... [2020-10-26 23:48:09,881 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:48:09" (1/1) ... [2020-10-26 23:48:09,882 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:48:09" (1/1) ... [2020-10-26 23:48:10,015 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:48:09" (1/1) ... [2020-10-26 23:48:10,039 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:48:09" (1/1) ... [2020-10-26 23:48:10,060 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:48:09" (1/1) ... [2020-10-26 23:48:10,085 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 23:48:10,086 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 23:48:10,087 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 23:48:10,087 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 23:48:10,088 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:48:09" (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 [2020-10-26 23:48:10,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 23:48:10,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 23:48:10,200 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 23:48:10,201 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-26 23:48:10,201 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-26 23:48:10,202 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 23:48:10,202 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-26 23:48:10,203 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-26 23:48:10,204 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 23:48:10,204 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 23:48:10,206 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 23:48:10,206 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 23:48:10,206 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 23:48:10,206 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 23:48:10,206 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 23:48:10,209 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 23:48:10,209 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 23:48:10,210 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 23:48:10,210 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 23:48:10,210 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 23:48:10,210 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 23:48:14,986 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 23:48:14,986 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 23:48:14,989 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:48:14 BoogieIcfgContainer [2020-10-26 23:48:14,990 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 23:48:14,992 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 23:48:14,992 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 23:48:14,996 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 23:48:14,996 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 11:48:08" (1/3) ... [2020-10-26 23:48:14,997 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f634acc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:48:14, skipping insertion in model container [2020-10-26 23:48:14,998 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:48:09" (2/3) ... [2020-10-26 23:48:14,998 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f634acc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:48:14, skipping insertion in model container [2020-10-26 23:48:14,998 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:48:14" (3/3) ... [2020-10-26 23:48:15,000 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem15_label53.c [2020-10-26 23:48:15,017 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 23:48:15,024 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 23:48:15,041 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 23:48:15,079 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 23:48:15,079 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 23:48:15,079 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 23:48:15,080 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 23:48:15,080 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 23:48:15,080 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 23:48:15,080 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 23:48:15,080 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 23:48:15,116 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states. [2020-10-26 23:48:15,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-26 23:48:15,127 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:48:15,128 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] [2020-10-26 23:48:15,128 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:48:15,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:48:15,137 INFO L82 PathProgramCache]: Analyzing trace with hash 1338382857, now seen corresponding path program 1 times [2020-10-26 23:48:15,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:48:15,149 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1210697722] [2020-10-26 23:48:15,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:48:15,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:48:15,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:16,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:48:16,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-26 23:48:16,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:48:16,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 730 [2020-10-26 23:48:16,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:48:16,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:48:16,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:48:16,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-26 23:48:16,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-26 23:48:16,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:48:16,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:48:16,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:16,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:48:16,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:48:16,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:48:16,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-26 23:48:16,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:48:16,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:48:16,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:48:16,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:48:16,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:48:16,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:48:16,529 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1210697722] [2020-10-26 23:48:16,532 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:48:16,533 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 23:48:16,535 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535363658] [2020-10-26 23:48:16,542 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 23:48:16,543 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:48:16,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 23:48:16,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 23:48:16,573 INFO L87 Difference]: Start difference. First operand 441 states. Second operand 4 states. [2020-10-26 23:48:16,760 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-26 23:48:25,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:48:25,720 INFO L93 Difference]: Finished difference Result 1204 states and 2170 transitions. [2020-10-26 23:48:25,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 23:48:25,724 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2020-10-26 23:48:25,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:48:25,744 INFO L225 Difference]: With dead ends: 1204 [2020-10-26 23:48:25,745 INFO L226 Difference]: Without dead ends: 698 [2020-10-26 23:48:25,756 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-26 23:48:25,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 698 states. [2020-10-26 23:48:25,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 698 to 692. [2020-10-26 23:48:25,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 692 states. [2020-10-26 23:48:25,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 1013 transitions. [2020-10-26 23:48:25,882 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 1013 transitions. Word has length 54 [2020-10-26 23:48:25,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:48:25,883 INFO L481 AbstractCegarLoop]: Abstraction has 692 states and 1013 transitions. [2020-10-26 23:48:25,883 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 23:48:25,883 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 1013 transitions. [2020-10-26 23:48:25,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-26 23:48:25,890 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:48:25,893 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:48:25,893 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 23:48:25,893 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:48:25,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:48:25,894 INFO L82 PathProgramCache]: Analyzing trace with hash -1181195362, now seen corresponding path program 1 times [2020-10-26 23:48:25,895 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:48:25,895 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1201627345] [2020-10-26 23:48:25,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:48:25,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:48:26,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:26,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:27,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:29,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:48:29,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-26 23:48:29,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:48:29,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3188 [2020-10-26 23:48:29,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:48:29,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:48:29,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:48:29,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-26 23:48:29,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:48:29,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:48:29,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:48:29,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:29,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:48:29,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:48:29,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:48:29,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:48:29,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:48:29,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:48:29,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:48:29,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:48:29,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:48:29,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:48:29,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:48:29,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:29,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:48:29,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-26 23:48:29,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:48:29,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 221 [2020-10-26 23:48:29,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:48:29,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:48:29,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:48:29,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-26 23:48:29,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:48:29,743 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:48:29,744 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1201627345] [2020-10-26 23:48:29,745 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:48:29,746 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 23:48:29,746 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589921822] [2020-10-26 23:48:29,748 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:48:29,748 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:48:29,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:48:29,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:48:29,752 INFO L87 Difference]: Start difference. First operand 692 states and 1013 transitions. Second operand 7 states. [2020-10-26 23:48:39,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:48:39,011 INFO L93 Difference]: Finished difference Result 1712 states and 2419 transitions. [2020-10-26 23:48:39,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 23:48:39,015 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 123 [2020-10-26 23:48:39,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:48:39,023 INFO L225 Difference]: With dead ends: 1712 [2020-10-26 23:48:39,024 INFO L226 Difference]: Without dead ends: 1026 [2020-10-26 23:48:39,027 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:48:39,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1026 states. [2020-10-26 23:48:39,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1026 to 1015. [2020-10-26 23:48:39,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1015 states. [2020-10-26 23:48:39,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1015 states to 1015 states and 1368 transitions. [2020-10-26 23:48:39,093 INFO L78 Accepts]: Start accepts. Automaton has 1015 states and 1368 transitions. Word has length 123 [2020-10-26 23:48:39,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:48:39,094 INFO L481 AbstractCegarLoop]: Abstraction has 1015 states and 1368 transitions. [2020-10-26 23:48:39,094 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:48:39,095 INFO L276 IsEmpty]: Start isEmpty. Operand 1015 states and 1368 transitions. [2020-10-26 23:48:39,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-26 23:48:39,099 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:48:39,100 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:48:39,100 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 23:48:39,100 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:48:39,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:48:39,101 INFO L82 PathProgramCache]: Analyzing trace with hash -143146406, now seen corresponding path program 1 times [2020-10-26 23:48:39,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:48:39,102 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [87193006] [2020-10-26 23:48:39,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:48:39,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:48:39,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:39,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:40,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:40,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:48:40,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-26 23:48:40,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:48:40,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1608 [2020-10-26 23:48:40,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:48:40,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:48:40,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:48:40,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-26 23:48:40,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:48:40,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:48:40,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:48:40,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:40,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:48:40,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:48:40,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:48:40,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-26 23:48:40,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:48:40,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:48:40,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:48:40,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:48:40,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:48:40,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:48:40,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:48:40,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:41,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:48:41,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-26 23:48:41,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:48:41,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-26 23:48:41,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:48:41,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:48:41,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:48:41,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-26 23:48:41,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:48:41,203 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:48:41,204 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [87193006] [2020-10-26 23:48:41,204 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:48:41,204 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 23:48:41,204 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154105152] [2020-10-26 23:48:41,206 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:48:41,207 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:48:41,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:48:41,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:48:41,209 INFO L87 Difference]: Start difference. First operand 1015 states and 1368 transitions. Second operand 7 states. [2020-10-26 23:48:52,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:48:52,962 INFO L93 Difference]: Finished difference Result 2388 states and 3398 transitions. [2020-10-26 23:48:52,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:48:52,963 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 128 [2020-10-26 23:48:52,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:48:52,973 INFO L225 Difference]: With dead ends: 2388 [2020-10-26 23:48:52,973 INFO L226 Difference]: Without dead ends: 1686 [2020-10-26 23:48:52,976 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:48:52,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1686 states. [2020-10-26 23:48:53,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1686 to 1336. [2020-10-26 23:48:53,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1336 states. [2020-10-26 23:48:53,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1336 states to 1336 states and 1730 transitions. [2020-10-26 23:48:53,031 INFO L78 Accepts]: Start accepts. Automaton has 1336 states and 1730 transitions. Word has length 128 [2020-10-26 23:48:53,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:48:53,031 INFO L481 AbstractCegarLoop]: Abstraction has 1336 states and 1730 transitions. [2020-10-26 23:48:53,031 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:48:53,032 INFO L276 IsEmpty]: Start isEmpty. Operand 1336 states and 1730 transitions. [2020-10-26 23:48:53,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2020-10-26 23:48:53,037 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:48:53,037 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:48:53,038 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 23:48:53,038 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:48:53,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:48:53,039 INFO L82 PathProgramCache]: Analyzing trace with hash -1776441136, now seen corresponding path program 1 times [2020-10-26 23:48:53,039 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:48:53,039 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1999623267] [2020-10-26 23:48:53,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:48:53,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:48:53,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:53,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:53,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:54,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:54,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:55,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:58,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:48:58,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 242 [2020-10-26 23:48:58,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-26 23:48:58,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-26 23:48:58,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:48:58,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-26 23:48:58,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:48:58,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 233 [2020-10-26 23:48:58,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:48:58,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:48:58,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:48:58,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:58,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:48:58,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:48:58,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:48:58,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:48:58,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:48:58,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:48:58,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:48:58,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:48:58,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:48:58,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:48:58,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:48:58,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:58,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:58,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:48:58,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-26 23:48:58,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:48:58,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 284 [2020-10-26 23:48:58,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:48:58,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:48:58,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:48:58,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-26 23:48:58,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:48:58,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-26 23:48:58,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:48:58,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:58,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:59,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:48:59,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-26 23:48:59,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:48:59,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 334 [2020-10-26 23:48:59,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:48:59,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 23:48:59,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:48:59,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-26 23:48:59,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:49:00,028 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 36 proven. 131 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-26 23:49:00,029 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1999623267] [2020-10-26 23:49:00,029 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:49:00,029 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-26 23:49:00,030 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223514454] [2020-10-26 23:49:00,031 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-26 23:49:00,031 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:49:00,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-26 23:49:00,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:49:00,032 INFO L87 Difference]: Start difference. First operand 1336 states and 1730 transitions. Second operand 12 states. [2020-10-26 23:49:02,068 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 79 [2020-10-26 23:49:02,653 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 85 [2020-10-26 23:49:02,935 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 78 [2020-10-26 23:49:03,315 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 78 [2020-10-26 23:49:04,087 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 85 [2020-10-26 23:49:04,600 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 77 [2020-10-26 23:49:04,788 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 75 [2020-10-26 23:49:08,650 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 34 [2020-10-26 23:49:17,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:49:17,019 INFO L93 Difference]: Finished difference Result 1815 states and 2545 transitions. [2020-10-26 23:49:17,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-26 23:49:17,020 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 228 [2020-10-26 23:49:17,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:49:17,040 INFO L225 Difference]: With dead ends: 1815 [2020-10-26 23:49:17,041 INFO L226 Difference]: Without dead ends: 1812 [2020-10-26 23:49:17,044 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=313, Invalid=877, Unknown=0, NotChecked=0, Total=1190 [2020-10-26 23:49:17,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1812 states. [2020-10-26 23:49:17,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1812 to 1669. [2020-10-26 23:49:17,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1669 states. [2020-10-26 23:49:17,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1669 states to 1669 states and 2320 transitions. [2020-10-26 23:49:17,139 INFO L78 Accepts]: Start accepts. Automaton has 1669 states and 2320 transitions. Word has length 228 [2020-10-26 23:49:17,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:49:17,142 INFO L481 AbstractCegarLoop]: Abstraction has 1669 states and 2320 transitions. [2020-10-26 23:49:17,142 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-26 23:49:17,142 INFO L276 IsEmpty]: Start isEmpty. Operand 1669 states and 2320 transitions. [2020-10-26 23:49:17,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2020-10-26 23:49:17,150 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:49:17,150 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-26 23:49:17,151 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 23:49:17,151 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:49:17,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:49:17,152 INFO L82 PathProgramCache]: Analyzing trace with hash -371326493, now seen corresponding path program 1 times [2020-10-26 23:49:17,152 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:49:17,152 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2058801300] [2020-10-26 23:49:17,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:49:17,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:49:17,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:17,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:17,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:17,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:18,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:19,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:22,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:49:22,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 286 [2020-10-26 23:49:22,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-26 23:49:22,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-26 23:49:22,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:49:22,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 23:49:22,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:49:22,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 224 [2020-10-26 23:49:22,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:49:22,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:49:22,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:49:22,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:22,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:49:22,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:49:22,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:49:22,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-26 23:49:22,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:49:22,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:49:22,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:49:22,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:49:22,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 23:49:22,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:49:22,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:49:22,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:22,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:49:22,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-26 23:49:22,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:49:22,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-10-26 23:49:22,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:49:22,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:49:22,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:49:22,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-26 23:49:22,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-26 23:49:22,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-26 23:49:22,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:49:22,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:23,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:49:23,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-26 23:49:23,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:49:23,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 271 [2020-10-26 23:49:23,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:49:23,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:49:23,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:49:23,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-26 23:49:23,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:49:23,293 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 93 proven. 2 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-10-26 23:49:23,294 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2058801300] [2020-10-26 23:49:23,294 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:49:23,294 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-26 23:49:23,294 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774641030] [2020-10-26 23:49:23,295 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:49:23,296 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:49:23,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:49:23,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:49:23,297 INFO L87 Difference]: Start difference. First operand 1669 states and 2320 transitions. Second operand 7 states. [2020-10-26 23:49:36,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:49:36,980 INFO L93 Difference]: Finished difference Result 4690 states and 6757 transitions. [2020-10-26 23:49:36,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:49:36,987 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 272 [2020-10-26 23:49:36,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:49:37,006 INFO L225 Difference]: With dead ends: 4690 [2020-10-26 23:49:37,007 INFO L226 Difference]: Without dead ends: 3027 [2020-10-26 23:49:37,013 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:49:37,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3027 states. [2020-10-26 23:49:37,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3027 to 2935. [2020-10-26 23:49:37,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2935 states. [2020-10-26 23:49:37,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2935 states to 2935 states and 3796 transitions. [2020-10-26 23:49:37,130 INFO L78 Accepts]: Start accepts. Automaton has 2935 states and 3796 transitions. Word has length 272 [2020-10-26 23:49:37,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:49:37,131 INFO L481 AbstractCegarLoop]: Abstraction has 2935 states and 3796 transitions. [2020-10-26 23:49:37,131 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:49:37,131 INFO L276 IsEmpty]: Start isEmpty. Operand 2935 states and 3796 transitions. [2020-10-26 23:49:37,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2020-10-26 23:49:37,139 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:49:37,139 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-26 23:49:37,139 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 23:49:37,140 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:49:37,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:49:37,140 INFO L82 PathProgramCache]: Analyzing trace with hash 513550589, now seen corresponding path program 1 times [2020-10-26 23:49:37,141 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:49:37,141 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [850259460] [2020-10-26 23:49:37,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:49:37,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:49:37,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:37,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:39,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:40,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:42,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:49:42,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 364 [2020-10-26 23:49:42,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:49:42,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5052 [2020-10-26 23:49:42,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:49:42,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:49:42,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:49:42,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-26 23:49:42,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:49:42,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:49:42,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:49:42,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:42,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:49:42,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:49:42,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:49:42,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 23:49:42,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:49:42,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:49:42,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:49:42,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:49:42,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:49:42,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:49:42,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:49:42,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:43,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:49:43,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-26 23:49:43,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:49:43,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 567 [2020-10-26 23:49:43,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:49:43,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:49:43,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:49:43,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-26 23:49:43,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:49:43,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-26 23:49:43,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:49:43,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:43,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:49:43,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-26 23:49:43,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:49:43,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-26 23:49:43,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:49:43,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:49:43,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-10-26 23:49:43,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:49:43,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:49:44,072 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 92 proven. 91 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-26 23:49:44,073 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [850259460] [2020-10-26 23:49:44,073 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:49:44,073 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:49:44,073 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722387139] [2020-10-26 23:49:44,074 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:49:44,075 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:49:44,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:49:44,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:49:44,075 INFO L87 Difference]: Start difference. First operand 2935 states and 3796 transitions. Second operand 7 states. [2020-10-26 23:49:55,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:49:55,365 INFO L93 Difference]: Finished difference Result 6240 states and 8014 transitions. [2020-10-26 23:49:55,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 23:49:55,373 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 350 [2020-10-26 23:49:55,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:49:55,392 INFO L225 Difference]: With dead ends: 6240 [2020-10-26 23:49:55,392 INFO L226 Difference]: Without dead ends: 3311 [2020-10-26 23:49:55,401 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:49:55,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3311 states. [2020-10-26 23:49:55,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3311 to 3251. [2020-10-26 23:49:55,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3251 states. [2020-10-26 23:49:55,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3251 states to 3251 states and 4122 transitions. [2020-10-26 23:49:55,518 INFO L78 Accepts]: Start accepts. Automaton has 3251 states and 4122 transitions. Word has length 350 [2020-10-26 23:49:55,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:49:55,519 INFO L481 AbstractCegarLoop]: Abstraction has 3251 states and 4122 transitions. [2020-10-26 23:49:55,520 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:49:55,520 INFO L276 IsEmpty]: Start isEmpty. Operand 3251 states and 4122 transitions. [2020-10-26 23:49:55,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2020-10-26 23:49:55,529 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:49:55,530 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-26 23:49:55,530 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 23:49:55,531 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:49:55,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:49:55,531 INFO L82 PathProgramCache]: Analyzing trace with hash 1920699988, now seen corresponding path program 1 times [2020-10-26 23:49:55,532 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:49:55,533 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [424874933] [2020-10-26 23:49:55,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:49:55,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:49:55,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:56,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:57,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:58,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:49:58,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 438 [2020-10-26 23:49:58,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:49:58,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2693 [2020-10-26 23:49:58,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:49:58,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:49:58,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-26 23:49:58,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-26 23:49:58,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:49:58,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:49:58,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:49:58,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:58,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:49:58,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:49:58,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:49:58,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 23:49:58,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:49:58,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:49:58,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:49:58,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:49:58,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:49:58,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:49:58,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:49:58,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:58,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:49:58,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-26 23:49:58,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:49:58,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 299 [2020-10-26 23:49:58,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:49:58,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:49:58,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:49:58,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-26 23:49:58,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:49:59,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-26 23:49:59,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:49:59,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:59,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:49:59,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-26 23:49:59,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:49:59,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-26 23:49:59,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:49:59,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:49:59,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:49:59,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-26 23:49:59,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:49:59,604 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 185 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 23:49:59,605 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [424874933] [2020-10-26 23:49:59,606 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:49:59,606 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:49:59,607 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700230176] [2020-10-26 23:49:59,608 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:49:59,609 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:49:59,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:49:59,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:49:59,610 INFO L87 Difference]: Start difference. First operand 3251 states and 4122 transitions. Second operand 7 states. [2020-10-26 23:50:12,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:50:12,916 INFO L93 Difference]: Finished difference Result 8168 states and 10836 transitions. [2020-10-26 23:50:12,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:50:12,921 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 424 [2020-10-26 23:50:12,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:50:12,948 INFO L225 Difference]: With dead ends: 8168 [2020-10-26 23:50:12,949 INFO L226 Difference]: Without dead ends: 5230 [2020-10-26 23:50:12,959 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:50:12,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5230 states. [2020-10-26 23:50:13,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5230 to 4543. [2020-10-26 23:50:13,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4543 states. [2020-10-26 23:50:13,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4543 states to 4543 states and 5582 transitions. [2020-10-26 23:50:13,112 INFO L78 Accepts]: Start accepts. Automaton has 4543 states and 5582 transitions. Word has length 424 [2020-10-26 23:50:13,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:50:13,113 INFO L481 AbstractCegarLoop]: Abstraction has 4543 states and 5582 transitions. [2020-10-26 23:50:13,113 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:50:13,113 INFO L276 IsEmpty]: Start isEmpty. Operand 4543 states and 5582 transitions. [2020-10-26 23:50:13,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 446 [2020-10-26 23:50:13,125 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:50:13,126 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-26 23:50:13,126 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 23:50:13,126 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:50:13,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:50:13,127 INFO L82 PathProgramCache]: Analyzing trace with hash 342500976, now seen corresponding path program 1 times [2020-10-26 23:50:13,127 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:50:13,127 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [954588789] [2020-10-26 23:50:13,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:50:13,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:50:13,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:50:13,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:50:13,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:50:14,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:50:17,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:50:17,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:50:18,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:50:18,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 461 [2020-10-26 23:50:18,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-26 23:50:18,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5042 [2020-10-26 23:50:18,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:50:18,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:50:18,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-26 23:50:18,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-26 23:50:18,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:50:18,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:50:18,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:50:18,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:50:18,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:50:18,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:50:18,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:50:18,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:50:18,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:50:18,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:50:18,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:50:18,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:50:18,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:50:18,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:50:18,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:50:18,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:50:18,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:50:18,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-26 23:50:18,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:50:18,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-26 23:50:18,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:50:18,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:50:18,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:50:18,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-26 23:50:18,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:50:18,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-26 23:50:18,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:50:18,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:50:18,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:50:19,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:50:19,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-26 23:50:19,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:50:19,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 727 [2020-10-26 23:50:19,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:50:19,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:50:19,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:50:19,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-26 23:50:19,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:50:19,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2020-10-26 23:50:19,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:50:19,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:50:19,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:50:19,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-26 23:50:19,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:50:19,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-26 23:50:19,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:50:19,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:50:19,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:50:19,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-26 23:50:19,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:50:19,939 INFO L134 CoverageAnalysis]: Checked inductivity of 424 backedges. 322 proven. 6 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2020-10-26 23:50:19,939 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [954588789] [2020-10-26 23:50:19,939 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:50:19,940 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:50:19,940 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640332519] [2020-10-26 23:50:19,941 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:50:19,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:50:19,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:50:19,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:50:19,942 INFO L87 Difference]: Start difference. First operand 4543 states and 5582 transitions. Second operand 7 states. [2020-10-26 23:50:36,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:50:36,136 INFO L93 Difference]: Finished difference Result 11358 states and 14208 transitions. [2020-10-26 23:50:36,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:50:36,137 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 445 [2020-10-26 23:50:36,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:50:36,170 INFO L225 Difference]: With dead ends: 11358 [2020-10-26 23:50:36,170 INFO L226 Difference]: Without dead ends: 6791 [2020-10-26 23:50:36,184 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:50:36,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6791 states. [2020-10-26 23:50:36,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6791 to 5835. [2020-10-26 23:50:36,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5835 states. [2020-10-26 23:50:36,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5835 states to 5835 states and 6838 transitions. [2020-10-26 23:50:36,354 INFO L78 Accepts]: Start accepts. Automaton has 5835 states and 6838 transitions. Word has length 445 [2020-10-26 23:50:36,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:50:36,355 INFO L481 AbstractCegarLoop]: Abstraction has 5835 states and 6838 transitions. [2020-10-26 23:50:36,355 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:50:36,355 INFO L276 IsEmpty]: Start isEmpty. Operand 5835 states and 6838 transitions. [2020-10-26 23:50:36,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 533 [2020-10-26 23:50:36,370 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:50:36,371 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:50:36,371 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 23:50:36,372 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:50:36,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:50:36,372 INFO L82 PathProgramCache]: Analyzing trace with hash 12747649, now seen corresponding path program 1 times [2020-10-26 23:50:36,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:50:36,373 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [11791703] [2020-10-26 23:50:36,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:50:36,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:50:36,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:50:36,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:50:38,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:50:38,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:50:41,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:50:41,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 548 [2020-10-26 23:50:41,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:50:41,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-26 23:50:41,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:50:41,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:50:41,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-26 23:50:41,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-26 23:50:41,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:50:41,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:50:41,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:50:41,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:50:41,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:50:41,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:50:41,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:50:41,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 23:50:41,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:50:41,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:50:41,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:50:41,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:50:41,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:50:41,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:50:41,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:50:41,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:50:42,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:50:42,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-26 23:50:42,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:50:42,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 198 [2020-10-26 23:50:42,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:50:42,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:50:42,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:50:42,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-26 23:50:42,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:50:42,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-26 23:50:42,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:50:42,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:50:42,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:50:42,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-26 23:50:42,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:50:42,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 202 [2020-10-26 23:50:42,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:50:42,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:50:42,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:50:42,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-26 23:50:42,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:50:42,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-10-26 23:50:42,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:50:42,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:50:42,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:50:42,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-26 23:50:42,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:50:42,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-26 23:50:42,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:50:42,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:50:42,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-10-26 23:50:42,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:50:42,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:50:42,966 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 250 proven. 92 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2020-10-26 23:50:42,966 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [11791703] [2020-10-26 23:50:42,967 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:50:42,967 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:50:42,967 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229106616] [2020-10-26 23:50:42,968 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:50:42,969 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:50:42,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:50:42,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:50:42,970 INFO L87 Difference]: Start difference. First operand 5835 states and 6838 transitions. Second operand 7 states. [2020-10-26 23:50:55,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:50:55,922 INFO L93 Difference]: Finished difference Result 13635 states and 15967 transitions. [2020-10-26 23:50:55,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:50:55,925 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 532 [2020-10-26 23:50:55,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:50:55,970 INFO L225 Difference]: With dead ends: 13635 [2020-10-26 23:50:55,970 INFO L226 Difference]: Without dead ends: 8113 [2020-10-26 23:50:55,986 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-26 23:50:55,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8113 states. [2020-10-26 23:50:56,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8113 to 8042. [2020-10-26 23:50:56,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8042 states. [2020-10-26 23:50:56,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8042 states to 8042 states and 9192 transitions. [2020-10-26 23:50:56,213 INFO L78 Accepts]: Start accepts. Automaton has 8042 states and 9192 transitions. Word has length 532 [2020-10-26 23:50:56,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:50:56,215 INFO L481 AbstractCegarLoop]: Abstraction has 8042 states and 9192 transitions. [2020-10-26 23:50:56,215 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:50:56,215 INFO L276 IsEmpty]: Start isEmpty. Operand 8042 states and 9192 transitions. [2020-10-26 23:50:56,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 545 [2020-10-26 23:50:56,225 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:50:56,225 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:50:56,225 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-26 23:50:56,226 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:50:56,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:50:56,226 INFO L82 PathProgramCache]: Analyzing trace with hash -914947319, now seen corresponding path program 1 times [2020-10-26 23:50:56,227 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:50:56,227 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [416871054] [2020-10-26 23:50:56,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:50:56,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:50:56,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:50:56,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:50:58,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:50:58,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:50:58,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 560 [2020-10-26 23:50:58,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:50:58,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2517 [2020-10-26 23:50:58,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:50:58,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:50:58,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-26 23:50:58,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 147 [2020-10-26 23:50:58,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:50:59,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:50:59,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:50:59,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:50:59,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:50:59,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:50:59,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:50:59,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:50:59,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:50:59,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:50:59,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:50:59,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:50:59,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:50:59,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:50:59,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:50:59,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:50:59,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:50:59,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-26 23:50:59,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:50:59,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-26 23:50:59,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:50:59,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:50:59,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:50:59,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:50:59,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:50:59,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-26 23:50:59,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:50:59,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:50:59,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:50:59,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-26 23:50:59,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:50:59,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-26 23:50:59,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:50:59,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:50:59,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:50:59,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-26 23:50:59,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:50:59,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-26 23:50:59,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:50:59,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:50:59,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:50:59,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:50:59,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-26 23:50:59,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:50:59,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 238 [2020-10-26 23:50:59,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:50:59,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:50:59,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:50:59,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-26 23:50:59,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:51:00,031 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 274 proven. 47 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2020-10-26 23:51:00,032 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [416871054] [2020-10-26 23:51:00,032 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:51:00,032 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:51:00,032 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171096567] [2020-10-26 23:51:00,033 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:51:00,034 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:51:00,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:51:00,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:51:00,035 INFO L87 Difference]: Start difference. First operand 8042 states and 9192 transitions. Second operand 7 states. [2020-10-26 23:51:10,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:51:10,498 INFO L93 Difference]: Finished difference Result 17166 states and 20726 transitions. [2020-10-26 23:51:10,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:51:10,500 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 544 [2020-10-26 23:51:10,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:51:10,538 INFO L225 Difference]: With dead ends: 17166 [2020-10-26 23:51:10,538 INFO L226 Difference]: Without dead ends: 9126 [2020-10-26 23:51:10,558 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:51:10,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9126 states. [2020-10-26 23:51:10,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9126 to 8386. [2020-10-26 23:51:10,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8386 states. [2020-10-26 23:51:10,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8386 states to 8386 states and 9640 transitions. [2020-10-26 23:51:10,800 INFO L78 Accepts]: Start accepts. Automaton has 8386 states and 9640 transitions. Word has length 544 [2020-10-26 23:51:10,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:51:10,801 INFO L481 AbstractCegarLoop]: Abstraction has 8386 states and 9640 transitions. [2020-10-26 23:51:10,801 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:51:10,801 INFO L276 IsEmpty]: Start isEmpty. Operand 8386 states and 9640 transitions. [2020-10-26 23:51:10,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 558 [2020-10-26 23:51:10,811 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:51:10,814 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:51:10,814 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-26 23:51:10,814 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:51:10,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:51:10,815 INFO L82 PathProgramCache]: Analyzing trace with hash -838588086, now seen corresponding path program 1 times [2020-10-26 23:51:10,816 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:51:10,816 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1910148057] [2020-10-26 23:51:10,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:51:10,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:51:11,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:11,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:13,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:51:13,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 573 [2020-10-26 23:51:13,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:51:13,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2207 [2020-10-26 23:51:13,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:51:13,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:51:13,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-26 23:51:13,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-26 23:51:13,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:51:13,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:51:13,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:51:13,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:13,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:51:13,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:51:13,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:51:13,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:51:13,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:51:13,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:51:13,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:51:13,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:51:13,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:51:13,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:51:13,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:51:13,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:13,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:51:13,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-26 23:51:13,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:51:13,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-26 23:51:13,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:51:13,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:51:13,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:51:13,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:51:13,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:51:13,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-26 23:51:13,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:51:13,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:13,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:51:13,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-26 23:51:13,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:51:13,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-26 23:51:13,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:51:13,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:51:13,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:51:13,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-26 23:51:13,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:51:13,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-26 23:51:13,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:51:13,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:13,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:51:13,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-26 23:51:13,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:51:13,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-26 23:51:13,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:51:13,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:51:13,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:51:13,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-26 23:51:13,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:51:14,101 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 349 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-26 23:51:14,102 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1910148057] [2020-10-26 23:51:14,102 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:51:14,102 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:51:14,102 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588258952] [2020-10-26 23:51:14,103 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:51:14,103 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:51:14,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:51:14,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:51:14,104 INFO L87 Difference]: Start difference. First operand 8386 states and 9640 transitions. Second operand 7 states. [2020-10-26 23:51:28,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:51:28,330 INFO L93 Difference]: Finished difference Result 19358 states and 23036 transitions. [2020-10-26 23:51:28,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:51:28,338 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 557 [2020-10-26 23:51:28,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:51:28,373 INFO L225 Difference]: With dead ends: 19358 [2020-10-26 23:51:28,373 INFO L226 Difference]: Without dead ends: 10641 [2020-10-26 23:51:28,394 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:51:28,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10641 states. [2020-10-26 23:51:28,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10641 to 9968. [2020-10-26 23:51:28,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9968 states. [2020-10-26 23:51:28,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9968 states to 9968 states and 11381 transitions. [2020-10-26 23:51:28,653 INFO L78 Accepts]: Start accepts. Automaton has 9968 states and 11381 transitions. Word has length 557 [2020-10-26 23:51:28,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:51:28,657 INFO L481 AbstractCegarLoop]: Abstraction has 9968 states and 11381 transitions. [2020-10-26 23:51:28,657 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:51:28,657 INFO L276 IsEmpty]: Start isEmpty. Operand 9968 states and 11381 transitions. [2020-10-26 23:51:28,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 580 [2020-10-26 23:51:28,668 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:51:28,669 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:51:28,669 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-26 23:51:28,669 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:51:28,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:51:28,670 INFO L82 PathProgramCache]: Analyzing trace with hash -64900030, now seen corresponding path program 1 times [2020-10-26 23:51:28,670 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:51:28,670 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [872489482] [2020-10-26 23:51:28,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:51:28,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:51:28,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:29,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:30,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:32,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:51:32,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 595 [2020-10-26 23:51:32,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:51:32,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3337 [2020-10-26 23:51:32,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:51:32,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:51:32,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-26 23:51:32,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-26 23:51:32,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:51:32,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:51:32,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:51:32,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:32,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:51:32,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:51:32,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:51:32,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:51:32,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:51:32,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:51:32,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:51:32,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:51:32,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:51:32,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:51:32,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:51:32,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:32,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:51:32,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-26 23:51:32,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:51:32,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-26 23:51:32,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:51:32,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:51:32,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:51:32,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:51:32,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:51:32,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-26 23:51:32,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:51:32,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:32,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:51:32,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-26 23:51:32,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:51:32,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-26 23:51:32,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:51:32,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:51:32,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:51:32,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-26 23:51:32,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:51:32,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-26 23:51:32,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:51:32,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:33,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:51:33,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-26 23:51:33,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:51:33,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 195 [2020-10-26 23:51:33,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:51:33,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:51:33,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:51:33,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-26 23:51:33,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:51:33,307 INFO L134 CoverageAnalysis]: Checked inductivity of 488 backedges. 376 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-26 23:51:33,308 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [872489482] [2020-10-26 23:51:33,308 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:51:33,308 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:51:33,308 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502825640] [2020-10-26 23:51:33,309 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:51:33,309 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:51:33,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:51:33,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:51:33,310 INFO L87 Difference]: Start difference. First operand 9968 states and 11381 transitions. Second operand 7 states.