/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label53.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 07:52:59,165 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 07:52:59,170 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 07:52:59,209 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 07:52:59,209 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 07:52:59,211 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 07:52:59,213 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 07:52:59,215 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 07:52:59,217 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 07:52:59,219 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 07:52:59,220 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 07:52:59,222 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 07:52:59,224 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 07:52:59,228 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 07:52:59,229 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 07:52:59,230 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 07:52:59,234 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 07:52:59,235 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 07:52:59,244 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 07:52:59,249 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 07:52:59,254 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 07:52:59,257 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 07:52:59,264 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 07:52:59,266 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 07:52:59,275 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 07:52:59,276 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 07:52:59,280 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 07:52:59,283 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 07:52:59,284 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 07:52:59,285 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-10-29 07:52:59,294 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 07:52:59,296 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 07:52:59,297 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 07:52:59,298 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 07:52:59,360 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 07:52:59,361 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 07:52:59,364 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 07:52:59,365 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 07:52:59,365 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 07:52:59,366 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 07:52:59,366 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 07:52:59,366 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 07:52:59,366 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 07:52:59,366 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 07:52:59,367 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 07:52:59,367 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 07:52:59,400 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 07:52:59,401 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 07:52:59,401 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 07:52:59,401 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 07:52:59,402 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 07:52:59,402 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 07:52:59,403 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 07:52:59,403 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 07:52:59,403 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 07:52:59,403 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 07:52:59,404 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 07:52:59,404 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 07:52:59,404 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 07:52:59,405 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 07:52:59,405 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 07:52:59,405 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 07:52:59,405 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 07:52:59,406 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 07:52:59,824 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 07:52:59,868 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 07:52:59,871 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 07:52:59,873 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 07:52:59,874 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 07:52:59,875 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label53.c [2020-10-29 07:52:59,962 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e8a4f716a/84dafedf44a147d0b120cc73d64ac336/FLAGbe6b59fc7 [2020-10-29 07:53:00,814 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 07:53:00,814 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label53.c [2020-10-29 07:53:00,842 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e8a4f716a/84dafedf44a147d0b120cc73d64ac336/FLAGbe6b59fc7 [2020-10-29 07:53:00,969 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e8a4f716a/84dafedf44a147d0b120cc73d64ac336 [2020-10-29 07:53:00,974 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 07:53:00,981 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 07:53:00,985 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 07:53:00,985 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 07:53:00,989 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 07:53:00,990 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:53:00" (1/1) ... [2020-10-29 07:53:00,994 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@608a81e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:53:00, skipping insertion in model container [2020-10-29 07:53:00,995 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:53:00" (1/1) ... [2020-10-29 07:53:01,003 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 07:53:01,113 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 07:53:02,008 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:53:02,018 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 07:53:02,260 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:53:02,289 INFO L208 MainTranslator]: Completed translation [2020-10-29 07:53:02,291 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:53:02 WrapperNode [2020-10-29 07:53:02,291 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 07:53:02,293 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 07:53:02,293 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 07:53:02,293 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 07:53:02,310 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:53:02" (1/1) ... [2020-10-29 07:53:02,313 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:53:02" (1/1) ... [2020-10-29 07:53:02,378 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:53:02" (1/1) ... [2020-10-29 07:53:02,378 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:53:02" (1/1) ... [2020-10-29 07:53:02,460 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:53:02" (1/1) ... [2020-10-29 07:53:02,480 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:53:02" (1/1) ... [2020-10-29 07:53:02,542 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:53:02" (1/1) ... [2020-10-29 07:53:02,568 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 07:53:02,569 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 07:53:02,570 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 07:53:02,570 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 07:53:02,571 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:53:02" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 07:53:02,647 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 07:53:02,647 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 07:53:02,647 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 07:53:02,647 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 07:53:02,648 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 07:53:02,648 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 07:53:02,648 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 07:53:02,648 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 07:53:02,648 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 07:53:02,649 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 07:53:02,649 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 07:53:02,649 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 07:53:02,649 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 07:53:02,649 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 07:53:02,649 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 07:53:02,650 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 07:53:02,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 07:53:02,650 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 07:53:02,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 07:53:02,650 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 07:53:02,650 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 07:53:06,497 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 07:53:06,497 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 07:53:06,500 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:53:06 BoogieIcfgContainer [2020-10-29 07:53:06,500 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 07:53:06,506 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 07:53:06,506 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 07:53:06,511 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 07:53:06,512 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 07:53:00" (1/3) ... [2020-10-29 07:53:06,513 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50939087 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:53:06, skipping insertion in model container [2020-10-29 07:53:06,513 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:53:02" (2/3) ... [2020-10-29 07:53:06,514 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50939087 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:53:06, skipping insertion in model container [2020-10-29 07:53:06,514 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:53:06" (3/3) ... [2020-10-29 07:53:06,516 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem15_label53.c [2020-10-29 07:53:06,530 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 07:53:06,538 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 07:53:06,555 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 07:53:06,615 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 07:53:06,615 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 07:53:06,615 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 07:53:06,615 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 07:53:06,616 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 07:53:06,616 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 07:53:06,616 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 07:53:06,616 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 07:53:06,668 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states. [2020-10-29 07:53:06,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-29 07:53:06,680 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:53:06,681 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] [2020-10-29 07:53:06,682 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:53:06,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:53:06,693 INFO L82 PathProgramCache]: Analyzing trace with hash 1338382857, now seen corresponding path program 1 times [2020-10-29 07:53:06,706 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:53:06,707 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1286641701] [2020-10-29 07:53:06,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:53:07,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:53:07,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:07,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:53:07,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-29 07:53:07,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:53:07,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 680 [2020-10-29 07:53:07,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:53:07,704 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:53:07,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:53:07,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:53:07,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-29 07:53:07,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 07:53:07,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:53:07,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:53:07,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:07,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:53:07,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:53:07,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:53:07,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-29 07:53:07,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:53:07,989 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:53:07,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:53:07,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:53:07,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:53:07,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:53:08,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:53:08,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1286641701] [2020-10-29 07:53:08,030 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:53:08,031 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 07:53:08,032 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84393167] [2020-10-29 07:53:08,039 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 07:53:08,039 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:53:08,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 07:53:08,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 07:53:08,065 INFO L87 Difference]: Start difference. First operand 441 states. Second operand 4 states. [2020-10-29 07:53:16,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:53:16,618 INFO L93 Difference]: Finished difference Result 1204 states and 2170 transitions. [2020-10-29 07:53:16,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:53:16,624 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2020-10-29 07:53:16,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:53:16,645 INFO L225 Difference]: With dead ends: 1204 [2020-10-29 07:53:16,646 INFO L226 Difference]: Without dead ends: 698 [2020-10-29 07:53:16,657 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:53:16,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 698 states. [2020-10-29 07:53:16,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 698 to 692. [2020-10-29 07:53:16,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 692 states. [2020-10-29 07:53:16,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 1013 transitions. [2020-10-29 07:53:16,820 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 1013 transitions. Word has length 54 [2020-10-29 07:53:16,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:53:16,823 INFO L481 AbstractCegarLoop]: Abstraction has 692 states and 1013 transitions. [2020-10-29 07:53:16,823 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 07:53:16,823 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 1013 transitions. [2020-10-29 07:53:16,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-29 07:53:16,841 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:53:16,842 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] [2020-10-29 07:53:16,842 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 07:53:16,843 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:53:16,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:53:16,845 INFO L82 PathProgramCache]: Analyzing trace with hash -1181195362, now seen corresponding path program 1 times [2020-10-29 07:53:16,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:53:16,846 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1376548314] [2020-10-29 07:53:16,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:53:16,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:53:16,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:17,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:18,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:20,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:53:20,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-29 07:53:20,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:53:20,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3165 [2020-10-29 07:53:20,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:53:20,094 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:53:20,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:53:20,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:53:20,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-29 07:53:20,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 07:53:20,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:53:20,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:53:20,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:20,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:53:20,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:53:20,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:53:20,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 07:53:20,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:53:20,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:53:20,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:53:20,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:53:20,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:53:20,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-29 07:53:20,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:53:20,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:53:20,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:20,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:53:20,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 07:53:20,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:53:20,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-10-29 07:53:20,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:53:20,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:53:20,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:53:20,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:53:20,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 07:53:20,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:53:20,654 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:53:20,654 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1376548314] [2020-10-29 07:53:20,655 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:53:20,655 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:53:20,655 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963946052] [2020-10-29 07:53:20,657 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:53:20,658 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:53:20,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:53:20,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:53:20,661 INFO L87 Difference]: Start difference. First operand 692 states and 1013 transitions. Second operand 7 states. [2020-10-29 07:53:31,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:53:31,266 INFO L93 Difference]: Finished difference Result 1712 states and 2419 transitions. [2020-10-29 07:53:31,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 07:53:31,269 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 123 [2020-10-29 07:53:31,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:53:31,278 INFO L225 Difference]: With dead ends: 1712 [2020-10-29 07:53:31,278 INFO L226 Difference]: Without dead ends: 1026 [2020-10-29 07:53:31,281 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 [2020-10-29 07:53:31,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1026 states. [2020-10-29 07:53:31,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1026 to 1015. [2020-10-29 07:53:31,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1015 states. [2020-10-29 07:53:31,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1015 states to 1015 states and 1368 transitions. [2020-10-29 07:53:31,331 INFO L78 Accepts]: Start accepts. Automaton has 1015 states and 1368 transitions. Word has length 123 [2020-10-29 07:53:31,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:53:31,332 INFO L481 AbstractCegarLoop]: Abstraction has 1015 states and 1368 transitions. [2020-10-29 07:53:31,332 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:53:31,332 INFO L276 IsEmpty]: Start isEmpty. Operand 1015 states and 1368 transitions. [2020-10-29 07:53:31,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-29 07:53:31,335 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:53:31,335 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] [2020-10-29 07:53:31,335 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 07:53:31,336 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:53:31,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:53:31,337 INFO L82 PathProgramCache]: Analyzing trace with hash -143146406, now seen corresponding path program 1 times [2020-10-29 07:53:31,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:53:31,337 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [769866291] [2020-10-29 07:53:31,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:53:31,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:53:31,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:31,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:32,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:32,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:53:32,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-29 07:53:32,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:53:32,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1493 [2020-10-29 07:53:32,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:53:32,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:53:32,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:53:32,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:53:32,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-29 07:53:32,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 07:53:33,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:53:33,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:53:33,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:33,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:53:33,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:53:33,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:53:33,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 07:53:33,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:53:33,035 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:53:33,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:53:33,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:53:33,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:53:33,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:53:33,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:53:33,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:53:33,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:33,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:53:33,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-29 07:53:33,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:53:33,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-10-29 07:53:33,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:53:33,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:53:33,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:53:33,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:53:33,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-29 07:53:33,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:53:33,359 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:53:33,360 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [769866291] [2020-10-29 07:53:33,360 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:53:33,360 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:53:33,361 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753801707] [2020-10-29 07:53:33,363 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:53:33,363 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:53:33,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:53:33,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:53:33,367 INFO L87 Difference]: Start difference. First operand 1015 states and 1368 transitions. Second operand 7 states. [2020-10-29 07:53:41,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:53:41,886 INFO L93 Difference]: Finished difference Result 2388 states and 3398 transitions. [2020-10-29 07:53:41,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:53:41,888 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 128 [2020-10-29 07:53:41,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:53:41,899 INFO L225 Difference]: With dead ends: 2388 [2020-10-29 07:53:41,899 INFO L226 Difference]: Without dead ends: 1686 [2020-10-29 07:53:41,903 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 [2020-10-29 07:53:41,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1686 states. [2020-10-29 07:53:41,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1686 to 1336. [2020-10-29 07:53:41,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1336 states. [2020-10-29 07:53:41,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1336 states to 1336 states and 1730 transitions. [2020-10-29 07:53:41,965 INFO L78 Accepts]: Start accepts. Automaton has 1336 states and 1730 transitions. Word has length 128 [2020-10-29 07:53:41,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:53:41,966 INFO L481 AbstractCegarLoop]: Abstraction has 1336 states and 1730 transitions. [2020-10-29 07:53:41,966 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:53:41,966 INFO L276 IsEmpty]: Start isEmpty. Operand 1336 states and 1730 transitions. [2020-10-29 07:53:41,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2020-10-29 07:53:41,971 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:53:41,971 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] [2020-10-29 07:53:41,971 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 07:53:41,972 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:53:41,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:53:41,972 INFO L82 PathProgramCache]: Analyzing trace with hash -1776441136, now seen corresponding path program 1 times [2020-10-29 07:53:41,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:53:41,973 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [370432279] [2020-10-29 07:53:41,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:53:42,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:53:42,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:42,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:42,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:43,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:43,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:44,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:47,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:53:47,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 242 [2020-10-29 07:53:47,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 07:53:47,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-29 07:53:47,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:53:47,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:53:47,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 07:53:47,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:53:47,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 182 [2020-10-29 07:53:47,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:53:47,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:53:47,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:53:47,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:47,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:53:47,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:53:47,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:53:47,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 07:53:47,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:53:47,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:53:47,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:53:47,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:53:47,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:53:47,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:53:47,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:53:47,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:53:47,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:47,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:53:47,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-29 07:53:47,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:53:47,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-10-29 07:53:47,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:53:47,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:53:47,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:53:47,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:53:47,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-29 07:53:47,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:53:47,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-29 07:53:47,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:53:47,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:47,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:53:47,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-29 07:53:47,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:53:47,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-10-29 07:53:47,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:53:47,755 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:53:47,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:53:47,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:53:47,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-29 07:53:47,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:53:47,914 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 93 proven. 74 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 07:53:47,915 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [370432279] [2020-10-29 07:53:47,915 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:53:47,915 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:53:47,915 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866435569] [2020-10-29 07:53:47,916 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 07:53:47,917 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:53:47,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 07:53:47,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:53:47,918 INFO L87 Difference]: Start difference. First operand 1336 states and 1730 transitions. Second operand 8 states. [2020-10-29 07:53:59,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:53:59,104 INFO L93 Difference]: Finished difference Result 3978 states and 5161 transitions. [2020-10-29 07:53:59,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:53:59,111 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 228 [2020-10-29 07:53:59,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:53:59,131 INFO L225 Difference]: With dead ends: 3978 [2020-10-29 07:53:59,131 INFO L226 Difference]: Without dead ends: 2648 [2020-10-29 07:53:59,137 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-29 07:53:59,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2648 states. [2020-10-29 07:53:59,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2648 to 2587. [2020-10-29 07:53:59,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2587 states. [2020-10-29 07:53:59,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2587 states to 2587 states and 3129 transitions. [2020-10-29 07:53:59,276 INFO L78 Accepts]: Start accepts. Automaton has 2587 states and 3129 transitions. Word has length 228 [2020-10-29 07:53:59,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:53:59,279 INFO L481 AbstractCegarLoop]: Abstraction has 2587 states and 3129 transitions. [2020-10-29 07:53:59,279 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 07:53:59,279 INFO L276 IsEmpty]: Start isEmpty. Operand 2587 states and 3129 transitions. [2020-10-29 07:53:59,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2020-10-29 07:53:59,287 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:53:59,287 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:53:59,287 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 07:53:59,288 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:53:59,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:53:59,288 INFO L82 PathProgramCache]: Analyzing trace with hash 1047799236, now seen corresponding path program 1 times [2020-10-29 07:53:59,289 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:53:59,290 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2100636319] [2020-10-29 07:53:59,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:53:59,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:53:59,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:59,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:54:00,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:54:04,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:54:04,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 348 [2020-10-29 07:54:04,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:54:04,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5057 [2020-10-29 07:54:04,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:54:04,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:54:04,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:54:04,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:54:04,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-29 07:54:04,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:54:04,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:54:04,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:54:04,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:54:04,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:54:04,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:54:04,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:54:04,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 07:54:04,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:54:04,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:54:04,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:54:04,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:54:04,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:54:04,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:54:04,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:54:04,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:54:04,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:54:05,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:54:05,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-29 07:54:05,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:54:05,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 332 [2020-10-29 07:54:05,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:54:05,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:54:05,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:54:05,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:54:05,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-29 07:54:05,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:54:05,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-29 07:54:05,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:54:05,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:54:05,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:54:05,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 07:54:05,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:54:05,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-29 07:54:05,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:54:05,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:54:05,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:54:05,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-29 07:54:05,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:54:05,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:54:05,927 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 92 proven. 75 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 07:54:05,927 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2100636319] [2020-10-29 07:54:05,928 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:54:05,928 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:54:05,928 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800644330] [2020-10-29 07:54:05,929 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:54:05,929 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:54:05,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:54:05,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:54:05,930 INFO L87 Difference]: Start difference. First operand 2587 states and 3129 transitions. Second operand 7 states. [2020-10-29 07:54:17,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:54:17,268 INFO L93 Difference]: Finished difference Result 5565 states and 6742 transitions. [2020-10-29 07:54:17,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:54:17,269 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 334 [2020-10-29 07:54:17,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:54:17,292 INFO L225 Difference]: With dead ends: 5565 [2020-10-29 07:54:17,292 INFO L226 Difference]: Without dead ends: 3291 [2020-10-29 07:54:17,299 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:54:17,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3291 states. [2020-10-29 07:54:17,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3291 to 3227. [2020-10-29 07:54:17,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3227 states. [2020-10-29 07:54:17,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3227 states to 3227 states and 3807 transitions. [2020-10-29 07:54:17,425 INFO L78 Accepts]: Start accepts. Automaton has 3227 states and 3807 transitions. Word has length 334 [2020-10-29 07:54:17,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:54:17,426 INFO L481 AbstractCegarLoop]: Abstraction has 3227 states and 3807 transitions. [2020-10-29 07:54:17,426 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:54:17,426 INFO L276 IsEmpty]: Start isEmpty. Operand 3227 states and 3807 transitions. [2020-10-29 07:54:17,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2020-10-29 07:54:17,438 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:54:17,439 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:54:17,439 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 07:54:17,439 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:54:17,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:54:17,440 INFO L82 PathProgramCache]: Analyzing trace with hash -18933477, now seen corresponding path program 1 times [2020-10-29 07:54:17,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:54:17,441 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2007317253] [2020-10-29 07:54:17,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:54:17,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:54:17,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:54:17,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:54:21,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:54:21,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 422 [2020-10-29 07:54:21,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:54:21,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3483 [2020-10-29 07:54:21,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:54:21,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:54:21,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:54:21,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-29 07:54:21,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-29 07:54:21,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:54:21,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:54:21,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:54:21,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:54:21,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:54:21,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:54:21,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:54:21,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 07:54:21,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:54:21,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:54:21,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:54:21,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:54:21,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:54:21,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:54:21,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:54:21,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:54:21,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:54:21,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:54:21,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-29 07:54:21,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:54:21,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 490 [2020-10-29 07:54:21,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:54:21,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:54:21,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:54:21,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:54:21,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-29 07:54:21,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:54:22,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 07:54:22,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:54:22,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:54:22,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:54:22,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 07:54:22,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:54:22,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-29 07:54:22,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:54:22,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:54:22,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:54:22,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:54:22,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 07:54:22,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:54:22,436 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 169 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 07:54:22,436 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2007317253] [2020-10-29 07:54:22,438 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:54:22,438 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:54:22,439 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559355076] [2020-10-29 07:54:22,439 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:54:22,440 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:54:22,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:54:22,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:54:22,441 INFO L87 Difference]: Start difference. First operand 3227 states and 3807 transitions. Second operand 7 states. [2020-10-29 07:54:34,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:54:34,877 INFO L93 Difference]: Finished difference Result 7483 states and 9148 transitions. [2020-10-29 07:54:34,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:54:34,879 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 408 [2020-10-29 07:54:34,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:54:34,908 INFO L225 Difference]: With dead ends: 7483 [2020-10-29 07:54:34,908 INFO L226 Difference]: Without dead ends: 4569 [2020-10-29 07:54:34,918 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:54:34,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4569 states. [2020-10-29 07:54:35,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4569 to 4506. [2020-10-29 07:54:35,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4506 states. [2020-10-29 07:54:35,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4506 states to 4506 states and 5298 transitions. [2020-10-29 07:54:35,061 INFO L78 Accepts]: Start accepts. Automaton has 4506 states and 5298 transitions. Word has length 408 [2020-10-29 07:54:35,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:54:35,062 INFO L481 AbstractCegarLoop]: Abstraction has 4506 states and 5298 transitions. [2020-10-29 07:54:35,062 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:54:35,062 INFO L276 IsEmpty]: Start isEmpty. Operand 4506 states and 5298 transitions. [2020-10-29 07:54:35,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 440 [2020-10-29 07:54:35,073 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:54:35,073 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, 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] [2020-10-29 07:54:35,073 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 07:54:35,074 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:54:35,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:54:35,074 INFO L82 PathProgramCache]: Analyzing trace with hash -670479736, now seen corresponding path program 1 times [2020-10-29 07:54:35,075 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:54:35,075 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1400590282] [2020-10-29 07:54:35,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:54:35,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:54:35,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:54:35,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:54:38,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:54:38,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 453 [2020-10-29 07:54:38,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:54:38,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2957 [2020-10-29 07:54:38,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:54:38,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:54:38,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:54:38,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-29 07:54:38,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-29 07:54:38,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:54:38,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:54:38,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:54:38,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:54:38,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:54:38,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:54:38,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:54:38,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 07:54:38,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:54:38,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:54:38,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:54:38,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:54:38,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:54:38,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:54:38,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:54:38,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:54:38,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:54:38,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:54:38,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-29 07:54:38,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:54:38,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 333 [2020-10-29 07:54:38,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:54:38,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:54:38,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:54:38,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:54:38,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-29 07:54:38,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:54:38,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 07:54:39,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:54:39,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:54:39,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:54:39,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:54:39,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:54:39,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 223 [2020-10-29 07:54:39,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:54:39,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:54:39,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:54:39,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:54:39,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-29 07:54:39,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:54:39,930 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 200 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 07:54:39,931 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1400590282] [2020-10-29 07:54:39,931 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:54:39,931 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:54:39,931 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557507255] [2020-10-29 07:54:39,932 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:54:39,932 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:54:39,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:54:39,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:54:39,933 INFO L87 Difference]: Start difference. First operand 4506 states and 5298 transitions. Second operand 7 states. [2020-10-29 07:54:49,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:54:49,869 INFO L93 Difference]: Finished difference Result 10013 states and 11842 transitions. [2020-10-29 07:54:49,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 07:54:49,871 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 439 [2020-10-29 07:54:49,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:54:49,900 INFO L225 Difference]: With dead ends: 10013 [2020-10-29 07:54:49,901 INFO L226 Difference]: Without dead ends: 5820 [2020-10-29 07:54:49,913 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-29 07:54:49,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5820 states. [2020-10-29 07:54:50,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5820 to 5773. [2020-10-29 07:54:50,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5773 states. [2020-10-29 07:54:50,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5773 states to 5773 states and 6647 transitions. [2020-10-29 07:54:50,084 INFO L78 Accepts]: Start accepts. Automaton has 5773 states and 6647 transitions. Word has length 439 [2020-10-29 07:54:50,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:54:50,085 INFO L481 AbstractCegarLoop]: Abstraction has 5773 states and 6647 transitions. [2020-10-29 07:54:50,085 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:54:50,086 INFO L276 IsEmpty]: Start isEmpty. Operand 5773 states and 6647 transitions. [2020-10-29 07:54:50,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 452 [2020-10-29 07:54:50,098 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:54:50,099 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, 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] [2020-10-29 07:54:50,099 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 07:54:50,099 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:54:50,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:54:50,100 INFO L82 PathProgramCache]: Analyzing trace with hash -334373376, now seen corresponding path program 1 times [2020-10-29 07:54:50,100 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:54:50,101 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1096522420] [2020-10-29 07:54:50,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:54:50,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:54:50,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:54:51,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:54:51,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 465 [2020-10-29 07:54:51,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:54:51,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 915 [2020-10-29 07:54:51,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:54:51,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:54:51,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:54:51,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-29 07:54:51,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-29 07:54:51,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:54:51,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:54:51,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:54:51,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:54:51,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:54:51,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:54:51,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:54:51,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 07:54:51,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:54:51,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:54:51,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:54:51,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:54:51,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:54:51,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:54:51,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:54:51,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:54:51,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:54:51,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:54:51,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-29 07:54:51,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:54:51,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-29 07:54:51,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:54:51,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:54:51,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:54:51,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:54:51,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:54:51,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:54:51,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-29 07:54:51,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:54:51,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:54:51,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:54:51,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:54:51,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:54:51,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-29 07:54:51,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:54:51,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:54:51,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:54:51,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:54:51,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-29 07:54:51,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:54:51,912 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 93 proven. 2 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2020-10-29 07:54:51,913 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1096522420] [2020-10-29 07:54:51,913 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:54:51,913 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 07:54:51,913 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307758361] [2020-10-29 07:54:51,914 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 07:54:51,914 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:54:51,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 07:54:51,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:54:51,915 INFO L87 Difference]: Start difference. First operand 5773 states and 6647 transitions. Second operand 5 states. [2020-10-29 07:55:00,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:55:00,587 INFO L93 Difference]: Finished difference Result 12497 states and 14788 transitions. [2020-10-29 07:55:00,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:55:00,589 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 451 [2020-10-29 07:55:00,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:55:00,616 INFO L225 Difference]: With dead ends: 12497 [2020-10-29 07:55:00,616 INFO L226 Difference]: Without dead ends: 7037 [2020-10-29 07:55:00,628 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 07:55:00,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7037 states. [2020-10-29 07:55:00,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7037 to 7029. [2020-10-29 07:55:00,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7029 states. [2020-10-29 07:55:00,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7029 states to 7029 states and 8070 transitions. [2020-10-29 07:55:00,791 INFO L78 Accepts]: Start accepts. Automaton has 7029 states and 8070 transitions. Word has length 451 [2020-10-29 07:55:00,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:55:00,792 INFO L481 AbstractCegarLoop]: Abstraction has 7029 states and 8070 transitions. [2020-10-29 07:55:00,792 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 07:55:00,792 INFO L276 IsEmpty]: Start isEmpty. Operand 7029 states and 8070 transitions. [2020-10-29 07:55:00,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 553 [2020-10-29 07:55:00,802 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:55:00,803 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, 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] [2020-10-29 07:55:00,804 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 07:55:00,804 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:55:00,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:55:00,805 INFO L82 PathProgramCache]: Analyzing trace with hash -1323272238, now seen corresponding path program 1 times [2020-10-29 07:55:00,805 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:55:00,805 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1539123883] [2020-10-29 07:55:00,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:55:00,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:55:01,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:01,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:02,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:03,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:03,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:55:03,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 568 [2020-10-29 07:55:03,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:55:03,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2772 [2020-10-29 07:55:03,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:55:03,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:55:03,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:55:03,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-29 07:55:03,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 155 [2020-10-29 07:55:03,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:55:03,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:55:03,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:55:03,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:03,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:55:03,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:55:03,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:55:03,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 07:55:03,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:55:03,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:55:03,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:55:03,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:55:03,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:55:03,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:55:03,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:55:03,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:55:03,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:04,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:55:04,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-29 07:55:04,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:55:04,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-29 07:55:04,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:55:04,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:55:04,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:55:04,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:55:04,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:55:04,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:55:04,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-29 07:55:04,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:55:04,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:04,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:55:04,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:55:04,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:55:04,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-29 07:55:04,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:55:04,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:55:04,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:55:04,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:55:04,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-29 07:55:04,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:55:04,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-29 07:55:04,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:55:04,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:04,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:04,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:55:04,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-29 07:55:04,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:55:04,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 222 [2020-10-29 07:55:04,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:55:04,626 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:55:04,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:55:04,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:55:04,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-29 07:55:04,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:55:04,886 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 290 proven. 47 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2020-10-29 07:55:04,887 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1539123883] [2020-10-29 07:55:04,887 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:55:04,887 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 07:55:04,887 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921750721] [2020-10-29 07:55:04,888 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 07:55:04,888 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:55:04,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 07:55:04,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 07:55:04,889 INFO L87 Difference]: Start difference. First operand 7029 states and 8070 transitions. Second operand 6 states. [2020-10-29 07:55:17,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:55:17,177 INFO L93 Difference]: Finished difference Result 14804 states and 17579 transitions. [2020-10-29 07:55:17,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 07:55:17,180 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 552 [2020-10-29 07:55:17,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:55:17,226 INFO L225 Difference]: With dead ends: 14804 [2020-10-29 07:55:17,226 INFO L226 Difference]: Without dead ends: 8698 [2020-10-29 07:55:17,241 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:55:17,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8698 states. [2020-10-29 07:55:17,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8698 to 8665. [2020-10-29 07:55:17,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8665 states. [2020-10-29 07:55:17,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8665 states to 8665 states and 9994 transitions. [2020-10-29 07:55:17,454 INFO L78 Accepts]: Start accepts. Automaton has 8665 states and 9994 transitions. Word has length 552 [2020-10-29 07:55:17,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:55:17,455 INFO L481 AbstractCegarLoop]: Abstraction has 8665 states and 9994 transitions. [2020-10-29 07:55:17,455 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 07:55:17,456 INFO L276 IsEmpty]: Start isEmpty. Operand 8665 states and 9994 transitions. [2020-10-29 07:55:17,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 580 [2020-10-29 07:55:17,465 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:55:17,467 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-10-29 07:55:17,467 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 07:55:17,467 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:55:17,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:55:17,468 INFO L82 PathProgramCache]: Analyzing trace with hash -64900030, now seen corresponding path program 1 times [2020-10-29 07:55:17,468 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:55:17,469 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [390810002] [2020-10-29 07:55:17,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:55:17,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:55:17,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:18,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:18,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:21,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:55:21,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 595 [2020-10-29 07:55:21,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:55:21,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3381 [2020-10-29 07:55:21,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:55:21,029 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:55:21,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:55:21,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-29 07:55:21,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-29 07:55:21,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:55:21,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:55:21,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:55:21,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:21,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:55:21,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:55:21,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:55:21,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 07:55:21,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:55:21,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:55:21,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:55:21,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:55:21,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:55:21,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:55:21,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:55:21,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:55:21,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:21,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:55:21,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-29 07:55:21,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:55:21,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-29 07:55:21,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:55:21,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:55:21,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:55:21,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:55:21,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:55:21,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:55:21,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-29 07:55:21,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:55:21,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:21,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:55:21,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:55:21,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:55:21,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-29 07:55:21,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:55:21,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:55:21,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:55:21,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:55:21,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-29 07:55:21,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:55:21,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-29 07:55:21,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:55:21,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:21,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:55:21,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-29 07:55:21,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:55:21,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 212 [2020-10-29 07:55:21,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:55:21,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:55:21,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:55:21,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:55:21,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-29 07:55:21,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:55:22,221 INFO L134 CoverageAnalysis]: Checked inductivity of 488 backedges. 376 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-29 07:55:22,222 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [390810002] [2020-10-29 07:55:22,222 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:55:22,222 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:55:22,223 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27988495] [2020-10-29 07:55:22,223 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:55:22,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:55:22,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:55:22,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:55:22,224 INFO L87 Difference]: Start difference. First operand 8665 states and 9994 transitions. Second operand 7 states. [2020-10-29 07:55:37,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:55:37,703 INFO L93 Difference]: Finished difference Result 17068 states and 20768 transitions. [2020-10-29 07:55:37,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:55:37,706 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 579 [2020-10-29 07:55:37,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:55:37,747 INFO L225 Difference]: With dead ends: 17068 [2020-10-29 07:55:37,747 INFO L226 Difference]: Without dead ends: 11824 [2020-10-29 07:55:37,761 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:55:37,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11824 states. [2020-10-29 07:55:38,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11824 to 11818. [2020-10-29 07:55:38,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11818 states. [2020-10-29 07:55:38,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11818 states to 11818 states and 13968 transitions. [2020-10-29 07:55:38,032 INFO L78 Accepts]: Start accepts. Automaton has 11818 states and 13968 transitions. Word has length 579 [2020-10-29 07:55:38,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:55:38,034 INFO L481 AbstractCegarLoop]: Abstraction has 11818 states and 13968 transitions. [2020-10-29 07:55:38,034 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:55:38,034 INFO L276 IsEmpty]: Start isEmpty. Operand 11818 states and 13968 transitions. [2020-10-29 07:55:38,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 702 [2020-10-29 07:55:38,055 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:55:38,056 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 07:55:38,056 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 07:55:38,057 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:55:38,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:55:38,058 INFO L82 PathProgramCache]: Analyzing trace with hash -1194363218, now seen corresponding path program 1 times [2020-10-29 07:55:38,058 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:55:38,058 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1094948215] [2020-10-29 07:55:38,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:55:38,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:55:38,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:38,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:39,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:42,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:43,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:55:43,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 719 [2020-10-29 07:55:43,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:55:43,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5075 [2020-10-29 07:55:43,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:55:43,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:55:43,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 07:55:43,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 296 [2020-10-29 07:55:43,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 265 [2020-10-29 07:55:43,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:55:43,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:55:43,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:55:43,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:43,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:55:43,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:55:43,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:55:43,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 07:55:43,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:55:43,600 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:55:43,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:55:43,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:55:43,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:55:43,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:55:43,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:55:43,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:55:43,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:44,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:55:44,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-29 07:55:44,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:55:44,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 217 [2020-10-29 07:55:44,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:55:44,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:55:44,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:55:44,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:55:44,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 281 [2020-10-29 07:55:44,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:55:44,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-29 07:55:44,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:55:44,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:44,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:55:44,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:55:44,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:55:44,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 224 [2020-10-29 07:55:44,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:55:44,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:55:44,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 07:55:44,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:55:44,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-29 07:55:44,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:55:44,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-29 07:55:44,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:55:44,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:44,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:55:44,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-29 07:55:44,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:55:44,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-10-29 07:55:44,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:55:44,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:55:44,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:55:44,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:55:44,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-10-29 07:55:44,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:55:44,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 554 [2020-10-29 07:55:44,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:55:44,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:55:44,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:55:44,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-29 07:55:44,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:55:44,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-29 07:55:44,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:55:44,986 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:55:44,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:55:44,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-10-29 07:55:44,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:55:44,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:55:45,571 INFO L134 CoverageAnalysis]: Checked inductivity of 858 backedges. 554 proven. 200 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2020-10-29 07:55:45,571 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1094948215] [2020-10-29 07:55:45,572 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:55:45,572 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 07:55:45,572 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860691902] [2020-10-29 07:55:45,573 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 07:55:45,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:55:45,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 07:55:45,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-29 07:55:45,574 INFO L87 Difference]: Start difference. First operand 11818 states and 13968 transitions. Second operand 10 states. [2020-10-29 07:55:52,568 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 66 [2020-10-29 07:56:09,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:56:09,577 INFO L93 Difference]: Finished difference Result 30576 states and 36979 transitions. [2020-10-29 07:56:09,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-29 07:56:09,580 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 701 [2020-10-29 07:56:09,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:56:09,648 INFO L225 Difference]: With dead ends: 30576 [2020-10-29 07:56:09,648 INFO L226 Difference]: Without dead ends: 19071 [2020-10-29 07:56:09,679 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=123, Invalid=383, Unknown=0, NotChecked=0, Total=506 [2020-10-29 07:56:09,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19071 states. [2020-10-29 07:56:10,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19071 to 18722. [2020-10-29 07:56:10,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18722 states. [2020-10-29 07:56:10,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18722 states to 18722 states and 22014 transitions. [2020-10-29 07:56:10,169 INFO L78 Accepts]: Start accepts. Automaton has 18722 states and 22014 transitions. Word has length 701 [2020-10-29 07:56:10,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:56:10,170 INFO L481 AbstractCegarLoop]: Abstraction has 18722 states and 22014 transitions. [2020-10-29 07:56:10,170 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 07:56:10,170 INFO L276 IsEmpty]: Start isEmpty. Operand 18722 states and 22014 transitions. [2020-10-29 07:56:10,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 729 [2020-10-29 07:56:10,192 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:56:10,193 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 07:56:10,193 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 07:56:10,193 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:56:10,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:56:10,194 INFO L82 PathProgramCache]: Analyzing trace with hash -1708280335, now seen corresponding path program 1 times [2020-10-29 07:56:10,194 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:56:10,194 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1851547026] [2020-10-29 07:56:10,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:56:10,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:56:10,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:11,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:12,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:14,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:56:14,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 746 [2020-10-29 07:56:14,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:56:14,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4302 [2020-10-29 07:56:14,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:56:14,689 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:56:14,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:56:14,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 491 [2020-10-29 07:56:14,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-29 07:56:14,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:56:14,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:56:14,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:56:14,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:14,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:56:14,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:56:14,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:56:14,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 07:56:14,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:56:14,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:56:14,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:56:14,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:56:14,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:56:14,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:56:14,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:56:14,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:56:14,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:14,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:56:14,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-29 07:56:14,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:56:14,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-29 07:56:14,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:56:14,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:56:14,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:56:14,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:56:14,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:56:14,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:56:15,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-29 07:56:15,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:56:15,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:15,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:56:15,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-29 07:56:15,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:56:15,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-29 07:56:15,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:56:15,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:56:15,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:56:15,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:56:15,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 188 [2020-10-29 07:56:15,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:56:15,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2020-10-29 07:56:15,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:56:15,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:15,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:56:15,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 07:56:15,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:56:15,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-29 07:56:15,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:56:15,367 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:56:15,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:56:15,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:56:15,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 07:56:15,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:56:15,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 567 [2020-10-29 07:56:15,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:56:15,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:15,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:56:15,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-29 07:56:15,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:56:15,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-29 07:56:15,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:56:15,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:56:15,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:56:15,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-29 07:56:15,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:56:15,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:56:15,862 INFO L134 CoverageAnalysis]: Checked inductivity of 847 backedges. 351 proven. 79 refuted. 0 times theorem prover too weak. 417 trivial. 0 not checked. [2020-10-29 07:56:15,863 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1851547026] [2020-10-29 07:56:15,863 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:56:15,863 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:56:15,863 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275831606] [2020-10-29 07:56:15,864 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:56:15,864 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:56:15,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:56:15,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:56:15,866 INFO L87 Difference]: Start difference. First operand 18722 states and 22014 transitions. Second operand 7 states. [2020-10-29 07:56:20,234 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-29 07:56:36,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:56:36,115 INFO L93 Difference]: Finished difference Result 43107 states and 51993 transitions. [2020-10-29 07:56:36,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:56:36,119 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 728 [2020-10-29 07:56:36,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:56:36,216 INFO L225 Difference]: With dead ends: 43107 [2020-10-29 07:56:36,216 INFO L226 Difference]: Without dead ends: 24698 [2020-10-29 07:56:36,256 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:56:36,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24698 states. [2020-10-29 07:56:36,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24698 to 24651. [2020-10-29 07:56:36,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24651 states. [2020-10-29 07:56:36,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24651 states to 24651 states and 29124 transitions. [2020-10-29 07:56:36,787 INFO L78 Accepts]: Start accepts. Automaton has 24651 states and 29124 transitions. Word has length 728 [2020-10-29 07:56:36,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:56:36,788 INFO L481 AbstractCegarLoop]: Abstraction has 24651 states and 29124 transitions. [2020-10-29 07:56:36,789 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:56:36,789 INFO L276 IsEmpty]: Start isEmpty. Operand 24651 states and 29124 transitions. [2020-10-29 07:56:36,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 734 [2020-10-29 07:56:36,811 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:56:36,811 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:56:36,812 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 07:56:36,812 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:56:36,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:56:36,813 INFO L82 PathProgramCache]: Analyzing trace with hash 228860508, now seen corresponding path program 1 times [2020-10-29 07:56:36,813 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:56:36,813 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1347058611] [2020-10-29 07:56:36,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:56:36,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:56:37,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:37,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:37,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:56:37,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking...