/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label44.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 13:57:25,183 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 13:57:25,188 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 13:57:25,247 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 13:57:25,247 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 13:57:25,256 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 13:57:25,258 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 13:57:25,263 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 13:57:25,266 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 13:57:25,274 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 13:57:25,276 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 13:57:25,277 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 13:57:25,277 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 13:57:25,281 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 13:57:25,285 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 13:57:25,287 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 13:57:25,289 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 13:57:25,293 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 13:57:25,301 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 13:57:25,303 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 13:57:25,307 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 13:57:25,309 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 13:57:25,311 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 13:57:25,313 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 13:57:25,317 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 13:57:25,317 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 13:57:25,318 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 13:57:25,324 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 13:57:25,324 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 13:57:25,325 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 13:57:25,325 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 13:57:25,326 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 13:57:25,327 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 13:57:25,328 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 13:57:25,329 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 13:57:25,329 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 13:57:25,330 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 13:57:25,330 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 13:57:25,330 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 13:57:25,331 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 13:57:25,332 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 13:57:25,333 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 [2020-10-28 13:57:25,360 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 13:57:25,360 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 13:57:25,361 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 13:57:25,362 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 13:57:25,362 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 13:57:25,362 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 13:57:25,362 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 13:57:25,363 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 13:57:25,363 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 13:57:25,363 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 13:57:25,363 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 13:57:25,363 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 13:57:25,364 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 13:57:25,364 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 13:57:25,364 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 13:57:25,364 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 13:57:25,364 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 13:57:25,365 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 13:57:25,365 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 13:57:25,365 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 13:57:25,365 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 13:57:25,365 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 13:57:25,366 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 13:57:25,366 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 13:57:25,366 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 13:57:25,366 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 13:57:25,366 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 13:57:25,367 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 13:57:25,367 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 13:57:25,367 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 13:57:25,787 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 13:57:25,823 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 13:57:25,827 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 13:57:25,828 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 13:57:25,829 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 13:57:25,830 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label44.c [2020-10-28 13:57:25,918 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e7e0c7da0/d7aded9f8e744a9fb1d1648c66f51419/FLAG3ef5ed06b [2020-10-28 13:57:26,905 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 13:57:26,906 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem18_label44.c [2020-10-28 13:57:26,946 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e7e0c7da0/d7aded9f8e744a9fb1d1648c66f51419/FLAG3ef5ed06b [2020-10-28 13:57:27,386 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e7e0c7da0/d7aded9f8e744a9fb1d1648c66f51419 [2020-10-28 13:57:27,391 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 13:57:27,400 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 13:57:27,404 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 13:57:27,405 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 13:57:27,409 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 13:57:27,410 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:57:27" (1/1) ... [2020-10-28 13:57:27,415 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@344291fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:57:27, skipping insertion in model container [2020-10-28 13:57:27,416 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:57:27" (1/1) ... [2020-10-28 13:57:27,427 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 13:57:27,550 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 13:57:28,730 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:57:28,748 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 13:57:29,231 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:57:29,260 INFO L208 MainTranslator]: Completed translation [2020-10-28 13:57:29,261 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:57:29 WrapperNode [2020-10-28 13:57:29,261 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 13:57:29,262 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 13:57:29,262 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 13:57:29,263 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 13:57:29,276 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:57:29" (1/1) ... [2020-10-28 13:57:29,276 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:57:29" (1/1) ... [2020-10-28 13:57:29,339 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:57:29" (1/1) ... [2020-10-28 13:57:29,339 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:57:29" (1/1) ... [2020-10-28 13:57:29,491 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:57:29" (1/1) ... [2020-10-28 13:57:29,529 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:57:29" (1/1) ... [2020-10-28 13:57:29,565 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:57:29" (1/1) ... [2020-10-28 13:57:29,597 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 13:57:29,598 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 13:57:29,598 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 13:57:29,598 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 13:57:29,599 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:57:29" (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 [2020-10-28 13:57:29,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 13:57:29,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 13:57:29,681 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 13:57:29,681 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 13:57:29,682 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 13:57:29,682 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-28 13:57:29,682 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 13:57:29,682 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 13:57:29,682 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 13:57:29,683 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-28 13:57:29,683 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 13:57:29,683 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 13:57:29,683 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 13:57:29,683 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 13:57:29,684 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 13:57:29,684 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 13:57:29,684 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 13:57:29,684 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 13:57:29,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 13:57:29,684 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 13:57:29,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 13:57:29,685 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 13:57:29,685 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 13:57:35,280 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 13:57:35,281 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 13:57:35,284 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:57:35 BoogieIcfgContainer [2020-10-28 13:57:35,284 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 13:57:35,287 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 13:57:35,287 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 13:57:35,290 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 13:57:35,291 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 01:57:27" (1/3) ... [2020-10-28 13:57:35,292 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@520c0506 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:57:35, skipping insertion in model container [2020-10-28 13:57:35,292 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:57:29" (2/3) ... [2020-10-28 13:57:35,292 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@520c0506 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:57:35, skipping insertion in model container [2020-10-28 13:57:35,293 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:57:35" (3/3) ... [2020-10-28 13:57:35,294 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem18_label44.c [2020-10-28 13:57:35,342 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 13:57:35,348 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 13:57:35,363 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 13:57:35,397 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 13:57:35,398 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 13:57:35,398 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 13:57:35,398 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 13:57:35,398 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 13:57:35,398 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 13:57:35,399 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 13:57:35,399 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 13:57:35,437 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states. [2020-10-28 13:57:35,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-28 13:57:35,446 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:57:35,447 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] [2020-10-28 13:57:35,447 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:57:35,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:57:35,454 INFO L82 PathProgramCache]: Analyzing trace with hash 600700568, now seen corresponding path program 1 times [2020-10-28 13:57:35,465 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:57:35,465 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2029938510] [2020-10-28 13:57:35,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:57:35,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:57:35,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:57:36,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:57:36,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-28 13:57:36,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:57:36,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 542 [2020-10-28 13:57:36,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:57:36,191 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:57:36,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:57:36,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:57:36,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-28 13:57:36,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 13:57:36,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:57:36,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:57:36,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:57:36,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:57:36,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:57:36,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:57:36,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 13:57:36,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:57:36,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:57:36,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:57:36,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:57:36,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:57:36,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:57:36,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:57:36,465 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2029938510] [2020-10-28 13:57:36,467 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:57:36,467 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 13:57:36,468 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010951799] [2020-10-28 13:57:36,474 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:57:36,474 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:57:36,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:57:36,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:57:36,492 INFO L87 Difference]: Start difference. First operand 778 states. Second operand 5 states. [2020-10-28 13:57:51,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:57:51,408 INFO L93 Difference]: Finished difference Result 2989 states and 5775 transitions. [2020-10-28 13:57:51,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 13:57:51,413 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 39 [2020-10-28 13:57:51,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:57:51,451 INFO L225 Difference]: With dead ends: 2989 [2020-10-28 13:57:51,452 INFO L226 Difference]: Without dead ends: 2143 [2020-10-28 13:57:51,463 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:57:51,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2143 states. [2020-10-28 13:57:51,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2143 to 2136. [2020-10-28 13:57:51,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2136 states. [2020-10-28 13:57:51,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2136 states to 2136 states and 3572 transitions. [2020-10-28 13:57:51,675 INFO L78 Accepts]: Start accepts. Automaton has 2136 states and 3572 transitions. Word has length 39 [2020-10-28 13:57:51,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:57:51,676 INFO L481 AbstractCegarLoop]: Abstraction has 2136 states and 3572 transitions. [2020-10-28 13:57:51,676 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:57:51,677 INFO L276 IsEmpty]: Start isEmpty. Operand 2136 states and 3572 transitions. [2020-10-28 13:57:51,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-28 13:57:51,694 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:57:51,694 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:57:51,695 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 13:57:51,695 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:57:51,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:57:51,697 INFO L82 PathProgramCache]: Analyzing trace with hash 633685717, now seen corresponding path program 1 times [2020-10-28 13:57:51,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:57:51,698 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [128180211] [2020-10-28 13:57:51,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:57:51,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:57:51,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:57:52,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:57:52,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:57:53,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:57:53,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-28 13:57:53,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:57:53,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1564 [2020-10-28 13:57:53,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:57:53,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:57:53,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:57:53,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:57:53,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-28 13:57:53,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:57:53,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:57:53,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:57:53,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:57:53,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:57:53,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:57:53,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:57:53,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 13:57:53,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:57:53,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:57:53,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:57:53,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:57:53,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:57:53,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-28 13:57:53,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:57:53,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:57:53,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:57:53,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:57:53,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-28 13:57:53,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:57:53,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-10-28 13:57:53,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:57:53,727 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:57:53,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:57:53,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:57:53,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-28 13:57:53,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:57:53,928 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:57:53,928 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [128180211] [2020-10-28 13:57:53,929 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:57:53,929 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 13:57:53,929 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574113374] [2020-10-28 13:57:53,931 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:57:53,932 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:57:53,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:57:53,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:57:53,936 INFO L87 Difference]: Start difference. First operand 2136 states and 3572 transitions. Second operand 7 states. [2020-10-28 13:58:05,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:58:05,404 INFO L93 Difference]: Finished difference Result 6479 states and 10917 transitions. [2020-10-28 13:58:05,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:58:05,405 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 127 [2020-10-28 13:58:05,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:58:05,433 INFO L225 Difference]: With dead ends: 6479 [2020-10-28 13:58:05,434 INFO L226 Difference]: Without dead ends: 4349 [2020-10-28 13:58:05,441 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:58:05,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4349 states. [2020-10-28 13:58:05,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4349 to 3596. [2020-10-28 13:58:05,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3596 states. [2020-10-28 13:58:05,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3596 states to 3596 states and 5297 transitions. [2020-10-28 13:58:05,582 INFO L78 Accepts]: Start accepts. Automaton has 3596 states and 5297 transitions. Word has length 127 [2020-10-28 13:58:05,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:58:05,583 INFO L481 AbstractCegarLoop]: Abstraction has 3596 states and 5297 transitions. [2020-10-28 13:58:05,583 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:58:05,583 INFO L276 IsEmpty]: Start isEmpty. Operand 3596 states and 5297 transitions. [2020-10-28 13:58:05,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-10-28 13:58:05,587 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:58:05,587 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:58:05,588 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 13:58:05,588 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:58:05,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:58:05,589 INFO L82 PathProgramCache]: Analyzing trace with hash -1443213094, now seen corresponding path program 1 times [2020-10-28 13:58:05,589 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:58:05,589 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2086090248] [2020-10-28 13:58:05,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:58:05,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:58:05,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:58:05,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:58:06,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:58:07,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:58:08,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:58:08,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 212 [2020-10-28 13:58:08,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:58:08,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3122 [2020-10-28 13:58:08,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:58:08,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:58:08,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:58:08,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-28 13:58:08,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-28 13:58:08,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 13:58:08,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:58:08,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:58:08,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:58:08,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:58:08,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:58:08,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:58:08,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:58:08,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:58:08,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:58:08,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:58:08,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:58:08,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:58:08,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:58:08,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:58:08,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:58:08,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:58:08,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:58:08,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-28 13:58:08,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:58:08,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-28 13:58:08,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:58:08,965 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:58:08,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:58:08,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:58:08,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-28 13:58:08,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:58:08,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-28 13:58:09,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:58:09,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:58:09,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:58:09,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-28 13:58:09,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:58:09,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-28 13:58:09,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:58:09,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:58:09,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:58:09,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:58:09,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-28 13:58:09,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:58:09,274 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 130 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:58:09,275 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2086090248] [2020-10-28 13:58:09,275 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:58:09,275 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:58:09,276 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604157881] [2020-10-28 13:58:09,278 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:58:09,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:58:09,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:58:09,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:58:09,281 INFO L87 Difference]: Start difference. First operand 3596 states and 5297 transitions. Second operand 7 states. [2020-10-28 13:58:25,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:58:25,413 INFO L93 Difference]: Finished difference Result 9487 states and 13664 transitions. [2020-10-28 13:58:25,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:58:25,415 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 198 [2020-10-28 13:58:25,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:58:25,444 INFO L225 Difference]: With dead ends: 9487 [2020-10-28 13:58:25,444 INFO L226 Difference]: Without dead ends: 5143 [2020-10-28 13:58:25,456 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:58:25,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5143 states. [2020-10-28 13:58:25,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5143 to 5092. [2020-10-28 13:58:25,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5092 states. [2020-10-28 13:58:25,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5092 states to 5092 states and 5963 transitions. [2020-10-28 13:58:25,614 INFO L78 Accepts]: Start accepts. Automaton has 5092 states and 5963 transitions. Word has length 198 [2020-10-28 13:58:25,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:58:25,615 INFO L481 AbstractCegarLoop]: Abstraction has 5092 states and 5963 transitions. [2020-10-28 13:58:25,615 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:58:25,615 INFO L276 IsEmpty]: Start isEmpty. Operand 5092 states and 5963 transitions. [2020-10-28 13:58:25,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2020-10-28 13:58:25,619 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:58:25,619 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:58:25,620 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 13:58:25,620 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:58:25,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:58:25,620 INFO L82 PathProgramCache]: Analyzing trace with hash -695464344, now seen corresponding path program 1 times [2020-10-28 13:58:25,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:58:25,621 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1767771904] [2020-10-28 13:58:25,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:58:25,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:58:25,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:58:25,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:58:26,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:58:28,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:58:29,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:58:29,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-10-28 13:58:29,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:58:29,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4215 [2020-10-28 13:58:29,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:58:29,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:58:29,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:58:29,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-28 13:58:29,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-28 13:58:29,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:58:30,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:58:30,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:58:30,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:58:30,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:58:30,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:58:30,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:58:30,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-28 13:58:30,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:58:30,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:58:30,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:58:30,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:58:30,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:58:30,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:58:30,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:58:30,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:58:30,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:58:30,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:58:30,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-28 13:58:30,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:58:30,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-28 13:58:30,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:58:30,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:58:30,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:58:30,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:58:30,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-28 13:58:30,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:58:30,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-28 13:58:30,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:58:30,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:58:30,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:58:30,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:58:30,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-28 13:58:30,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:58:30,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 261 [2020-10-28 13:58:30,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:58:30,519 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:58:30,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:58:30,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:58:30,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-28 13:58:30,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:58:30,692 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 97 proven. 31 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 13:58:30,692 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1767771904] [2020-10-28 13:58:30,693 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:58:30,693 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:58:30,693 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225885876] [2020-10-28 13:58:30,695 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:58:30,695 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:58:30,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:58:30,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:58:30,696 INFO L87 Difference]: Start difference. First operand 5092 states and 5963 transitions. Second operand 7 states. [2020-10-28 13:58:39,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:58:39,728 INFO L93 Difference]: Finished difference Result 13137 states and 15883 transitions. [2020-10-28 13:58:39,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:58:39,729 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 237 [2020-10-28 13:58:39,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:58:39,771 INFO L225 Difference]: With dead ends: 13137 [2020-10-28 13:58:39,772 INFO L226 Difference]: Without dead ends: 8055 [2020-10-28 13:58:39,789 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:58:39,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8055 states. [2020-10-28 13:58:40,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8055 to 8026. [2020-10-28 13:58:40,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8026 states. [2020-10-28 13:58:40,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8026 states to 8026 states and 9441 transitions. [2020-10-28 13:58:40,078 INFO L78 Accepts]: Start accepts. Automaton has 8026 states and 9441 transitions. Word has length 237 [2020-10-28 13:58:40,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:58:40,079 INFO L481 AbstractCegarLoop]: Abstraction has 8026 states and 9441 transitions. [2020-10-28 13:58:40,079 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:58:40,079 INFO L276 IsEmpty]: Start isEmpty. Operand 8026 states and 9441 transitions. [2020-10-28 13:58:40,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2020-10-28 13:58:40,088 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:58:40,088 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-28 13:58:40,089 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 13:58:40,089 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:58:40,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:58:40,089 INFO L82 PathProgramCache]: Analyzing trace with hash -1223528581, now seen corresponding path program 1 times [2020-10-28 13:58:40,090 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:58:40,090 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [163372792] [2020-10-28 13:58:40,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:58:40,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:58:40,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:58:40,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:58:40,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:58:43,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:58:44,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:58:45,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:58:45,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 320 [2020-10-28 13:58:45,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 13:58:45,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 13:58:45,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:58:45,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:58:45,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:58:45,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-28 13:58:45,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-28 13:58:45,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:58:45,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:58:45,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:58:45,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:58:45,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:58:45,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:58:45,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:58:45,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 13:58:45,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:58:45,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:58:45,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:58:45,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:58:45,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:58:45,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:58:45,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:58:45,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:58:45,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:58:45,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:58:45,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-28 13:58:45,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:58:45,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-28 13:58:45,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:58:45,353 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:58:45,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:58:45,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:58:45,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-28 13:58:45,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:58:45,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-28 13:58:45,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:58:45,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:58:45,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:58:45,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-28 13:58:45,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:58:45,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 214 [2020-10-28 13:58:45,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:58:45,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:58:45,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:58:45,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:58:45,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-28 13:58:45,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:58:45,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-10-28 13:58:45,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:58:45,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:58:45,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:58:45,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-28 13:58:45,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:58:45,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-28 13:58:45,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:58:45,840 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:58:45,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:58:45,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-28 13:58:45,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:58:45,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:58:46,003 INFO L134 CoverageAnalysis]: Checked inductivity of 323 backedges. 165 proven. 87 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-10-28 13:58:46,004 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [163372792] [2020-10-28 13:58:46,004 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:58:46,004 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:58:46,004 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108635221] [2020-10-28 13:58:46,005 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:58:46,005 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:58:46,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:58:46,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:58:46,006 INFO L87 Difference]: Start difference. First operand 8026 states and 9441 transitions. Second operand 7 states. [2020-10-28 13:58:55,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:58:55,908 INFO L93 Difference]: Finished difference Result 17645 states and 21184 transitions. [2020-10-28 13:58:55,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:58:55,909 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 304 [2020-10-28 13:58:55,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:58:55,951 INFO L225 Difference]: With dead ends: 17645 [2020-10-28 13:58:55,951 INFO L226 Difference]: Without dead ends: 9629 [2020-10-28 13:58:55,975 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:58:55,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9629 states. [2020-10-28 13:58:56,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9629 to 9556. [2020-10-28 13:58:56,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9556 states. [2020-10-28 13:58:56,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9556 states to 9556 states and 11259 transitions. [2020-10-28 13:58:56,338 INFO L78 Accepts]: Start accepts. Automaton has 9556 states and 11259 transitions. Word has length 304 [2020-10-28 13:58:56,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:58:56,339 INFO L481 AbstractCegarLoop]: Abstraction has 9556 states and 11259 transitions. [2020-10-28 13:58:56,339 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:58:56,339 INFO L276 IsEmpty]: Start isEmpty. Operand 9556 states and 11259 transitions. [2020-10-28 13:58:56,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2020-10-28 13:58:56,350 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:58:56,351 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:58:56,351 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 13:58:56,351 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:58:56,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:58:56,352 INFO L82 PathProgramCache]: Analyzing trace with hash 503501033, now seen corresponding path program 1 times [2020-10-28 13:58:56,352 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:58:56,353 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1900168989] [2020-10-28 13:58:56,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:58:56,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:58:56,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:58:56,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:58:56,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:58:59,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:58:59,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 326 [2020-10-28 13:58:59,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:58:59,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3233 [2020-10-28 13:58:59,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:58:59,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:58:59,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:58:59,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 156 [2020-10-28 13:58:59,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-28 13:58:59,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:58:59,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:58:59,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:58:59,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:58:59,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:58:59,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:58:59,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:58:59,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 13:58:59,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:58:59,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:58:59,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:58:59,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:58:59,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:58:59,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:58:59,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:58:59,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:58:59,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:58:59,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:58:59,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-28 13:58:59,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:58:59,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 13:58:59,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:58:59,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:58:59,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:58:59,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:58:59,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:58:59,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:58:59,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-28 13:58:59,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:58:59,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:58:59,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:58:59,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 13:58:59,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:58:59,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-28 13:58:59,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:58:59,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:58:59,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:58:59,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:58:59,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-28 13:58:59,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 13:58:59,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-28 13:58:59,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:58:59,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:00,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:00,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:59:00,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-28 13:59:00,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:59:00,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 262 [2020-10-28 13:59:00,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:59:00,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:59:00,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:59:00,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:59:00,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-28 13:59:00,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:59:00,374 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 99 proven. 3 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked. [2020-10-28 13:59:00,375 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1900168989] [2020-10-28 13:59:00,376 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:59:00,377 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:59:00,377 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015196251] [2020-10-28 13:59:00,378 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:59:00,378 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:59:00,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:59:00,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:59:00,379 INFO L87 Difference]: Start difference. First operand 9556 states and 11259 transitions. Second operand 5 states. [2020-10-28 13:59:07,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:59:07,733 INFO L93 Difference]: Finished difference Result 19118 states and 22536 transitions. [2020-10-28 13:59:07,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:59:07,735 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 310 [2020-10-28 13:59:07,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:59:07,765 INFO L225 Difference]: With dead ends: 19118 [2020-10-28 13:59:07,766 INFO L226 Difference]: Without dead ends: 9572 [2020-10-28 13:59:07,795 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:59:07,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9572 states. [2020-10-28 13:59:07,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9572 to 9548. [2020-10-28 13:59:07,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9548 states. [2020-10-28 13:59:08,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9548 states to 9548 states and 10565 transitions. [2020-10-28 13:59:08,020 INFO L78 Accepts]: Start accepts. Automaton has 9548 states and 10565 transitions. Word has length 310 [2020-10-28 13:59:08,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:59:08,021 INFO L481 AbstractCegarLoop]: Abstraction has 9548 states and 10565 transitions. [2020-10-28 13:59:08,021 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:59:08,021 INFO L276 IsEmpty]: Start isEmpty. Operand 9548 states and 10565 transitions. [2020-10-28 13:59:08,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2020-10-28 13:59:08,033 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:59:08,034 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:59:08,034 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 13:59:08,034 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:59:08,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:59:08,035 INFO L82 PathProgramCache]: Analyzing trace with hash -1616538485, now seen corresponding path program 1 times [2020-10-28 13:59:08,035 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:59:08,036 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1706271628] [2020-10-28 13:59:08,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:59:08,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:59:08,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:08,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:09,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:09,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:13,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:59:13,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 357 [2020-10-28 13:59:13,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:59:13,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-28 13:59:13,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:59:13,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:59:13,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:59:13,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-28 13:59:13,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-28 13:59:13,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:59:13,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:59:13,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:59:13,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:13,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:59:13,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:59:13,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:59:13,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:59:13,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:59:13,200 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:59:13,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:59:13,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:59:13,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:59:13,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:59:13,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:59:13,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:59:13,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:13,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:59:13,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-28 13:59:13,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:59:13,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-28 13:59:13,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:59:13,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:59:13,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:59:13,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:59:13,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-28 13:59:13,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:59:13,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-28 13:59:13,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:59:13,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:13,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:59:13,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-28 13:59:13,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:59:13,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-28 13:59:13,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:59:13,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:59:13,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:59:13,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:59:13,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-28 13:59:13,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:59:13,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2020-10-28 13:59:13,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:59:13,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:13,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:59:13,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-28 13:59:13,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:59:13,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-28 13:59:13,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:59:13,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:59:13,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:59:13,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 133 [2020-10-28 13:59:13,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:59:13,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:59:13,736 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 165 proven. 95 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-10-28 13:59:13,738 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1706271628] [2020-10-28 13:59:13,739 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:59:13,739 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:59:13,739 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849640286] [2020-10-28 13:59:13,740 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:59:13,740 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:59:13,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:59:13,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:59:13,742 INFO L87 Difference]: Start difference. First operand 9548 states and 10565 transitions. Second operand 7 states. [2020-10-28 13:59:22,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:59:22,877 INFO L93 Difference]: Finished difference Result 27649 states and 34021 transitions. [2020-10-28 13:59:22,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:59:22,879 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 341 [2020-10-28 13:59:22,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:59:22,967 INFO L225 Difference]: With dead ends: 27649 [2020-10-28 13:59:22,967 INFO L226 Difference]: Without dead ends: 18111 [2020-10-28 13:59:23,006 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:59:23,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18111 states. [2020-10-28 13:59:23,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18111 to 17594. [2020-10-28 13:59:23,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17594 states. [2020-10-28 13:59:23,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17594 states to 17594 states and 19411 transitions. [2020-10-28 13:59:23,520 INFO L78 Accepts]: Start accepts. Automaton has 17594 states and 19411 transitions. Word has length 341 [2020-10-28 13:59:23,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:59:23,521 INFO L481 AbstractCegarLoop]: Abstraction has 17594 states and 19411 transitions. [2020-10-28 13:59:23,521 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:59:23,521 INFO L276 IsEmpty]: Start isEmpty. Operand 17594 states and 19411 transitions. [2020-10-28 13:59:23,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2020-10-28 13:59:23,534 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:59:23,535 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:59:23,535 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 13:59:23,535 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:59:23,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:59:23,536 INFO L82 PathProgramCache]: Analyzing trace with hash -1263368589, now seen corresponding path program 1 times [2020-10-28 13:59:23,536 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:59:23,536 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2017262015] [2020-10-28 13:59:23,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:59:23,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:59:23,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:23,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:25,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:26,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:26,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:28,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:59:28,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 358 [2020-10-28 13:59:28,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 13:59:28,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-28 13:59:28,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:59:28,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:59:28,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:59:28,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:59:28,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-28 13:59:28,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:59:28,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:59:28,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:59:28,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:28,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:59:28,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:59:28,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:59:28,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 13:59:28,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:59:28,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:59:28,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:59:28,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:59:28,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:59:28,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:59:28,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:59:28,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:59:28,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:28,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:59:28,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-28 13:59:28,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:59:28,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-28 13:59:28,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:59:28,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:59:28,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:59:28,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:59:28,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-28 13:59:28,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:59:28,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-28 13:59:28,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:59:28,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:28,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:59:28,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-28 13:59:28,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:59:28,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-28 13:59:28,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:59:28,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:59:28,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:59:28,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-10-28 13:59:28,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:59:28,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:59:28,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-10-28 13:59:29,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:59:29,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:29,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:59:29,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-28 13:59:29,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:59:29,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-28 13:59:29,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:59:29,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:59:29,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:59:29,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 133 [2020-10-28 13:59:29,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:59:29,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:59:29,197 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 93 proven. 134 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2020-10-28 13:59:29,198 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2017262015] [2020-10-28 13:59:29,198 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:59:29,198 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:59:29,198 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835244551] [2020-10-28 13:59:29,199 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:59:29,200 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:59:29,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:59:29,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:59:29,201 INFO L87 Difference]: Start difference. First operand 17594 states and 19411 transitions. Second operand 7 states. [2020-10-28 13:59:38,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:59:38,205 INFO L93 Difference]: Finished difference Result 37376 states and 41357 transitions. [2020-10-28 13:59:38,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:59:38,206 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 342 [2020-10-28 13:59:38,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:59:38,271 INFO L225 Difference]: With dead ends: 37376 [2020-10-28 13:59:38,272 INFO L226 Difference]: Without dead ends: 19792 [2020-10-28 13:59:38,305 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:59:38,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19792 states. [2020-10-28 13:59:38,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19792 to 19057. [2020-10-28 13:59:38,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19057 states. [2020-10-28 13:59:38,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19057 states to 19057 states and 21023 transitions. [2020-10-28 13:59:38,732 INFO L78 Accepts]: Start accepts. Automaton has 19057 states and 21023 transitions. Word has length 342 [2020-10-28 13:59:38,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:59:38,733 INFO L481 AbstractCegarLoop]: Abstraction has 19057 states and 21023 transitions. [2020-10-28 13:59:38,733 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:59:38,733 INFO L276 IsEmpty]: Start isEmpty. Operand 19057 states and 21023 transitions. [2020-10-28 13:59:38,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2020-10-28 13:59:38,747 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:59:38,747 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:59:38,747 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 13:59:38,748 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:59:38,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:59:38,748 INFO L82 PathProgramCache]: Analyzing trace with hash 1663755127, now seen corresponding path program 1 times [2020-10-28 13:59:38,748 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:59:38,749 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [634533016] [2020-10-28 13:59:38,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:59:38,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:59:38,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:39,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:39,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:40,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:43,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:59:43,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 371 [2020-10-28 13:59:43,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:59:43,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-28 13:59:43,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:59:43,965 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:59:43,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:59:43,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:59:43,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-28 13:59:43,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:59:44,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:59:44,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:59:44,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:44,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:59:44,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:59:44,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:59:44,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 13:59:44,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:59:44,125 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:59:44,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:59:44,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:59:44,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:59:44,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:59:44,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:59:44,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:59:44,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:44,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:59:44,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-28 13:59:44,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:59:44,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-28 13:59:44,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:59:44,280 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:59:44,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:59:44,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:59:44,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-28 13:59:44,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:59:44,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-28 13:59:44,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:59:44,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:44,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:59:44,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-28 13:59:44,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:59:44,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-28 13:59:44,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:59:44,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:59:44,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:59:44,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 104 [2020-10-28 13:59:44,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:59:44,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:59:44,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2020-10-28 13:59:44,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:59:44,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:44,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:59:44,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-28 13:59:44,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:59:44,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 13:59:44,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:59:44,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:59:44,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:59:44,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-28 13:59:44,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:59:44,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:59:44,647 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 93 proven. 184 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2020-10-28 13:59:44,648 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [634533016] [2020-10-28 13:59:44,648 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:59:44,648 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 13:59:44,648 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535192227] [2020-10-28 13:59:44,649 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 13:59:44,649 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:59:44,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 13:59:44,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:59:44,650 INFO L87 Difference]: Start difference. First operand 19057 states and 21023 transitions. Second operand 8 states. [2020-10-28 13:59:54,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:59:54,263 INFO L93 Difference]: Finished difference Result 47319 states and 51898 transitions. [2020-10-28 13:59:54,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 13:59:54,270 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 355 [2020-10-28 13:59:54,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:59:54,445 INFO L225 Difference]: With dead ends: 47319 [2020-10-28 13:59:54,445 INFO L226 Difference]: Without dead ends: 28272 [2020-10-28 13:59:54,470 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2020-10-28 13:59:54,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28272 states. [2020-10-28 13:59:54,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28272 to 27500. [2020-10-28 13:59:54,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27500 states. [2020-10-28 13:59:54,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27500 states to 27500 states and 29353 transitions. [2020-10-28 13:59:54,933 INFO L78 Accepts]: Start accepts. Automaton has 27500 states and 29353 transitions. Word has length 355 [2020-10-28 13:59:54,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:59:54,934 INFO L481 AbstractCegarLoop]: Abstraction has 27500 states and 29353 transitions. [2020-10-28 13:59:54,934 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 13:59:54,934 INFO L276 IsEmpty]: Start isEmpty. Operand 27500 states and 29353 transitions. [2020-10-28 13:59:55,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1190 [2020-10-28 13:59:55,007 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:59:55,009 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:59:55,009 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 13:59:55,009 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:59:55,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:59:55,010 INFO L82 PathProgramCache]: Analyzing trace with hash -582780187, now seen corresponding path program 1 times [2020-10-28 13:59:55,010 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:59:55,010 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1246452768] [2020-10-28 13:59:55,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:59:55,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:59:55,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:55,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:56,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:00,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:00:00,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1215 [2020-10-28 14:00:00,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:00:00,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5120 [2020-10-28 14:00:00,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:00:00,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:00:00,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:00:00,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 849 [2020-10-28 14:00:00,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-28 14:00:00,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:00:00,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:00:00,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:00:00,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:00,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:00:00,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:00:00,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:00:00,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 14:00:00,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:00:00,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:00:00,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:00:00,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:00:00,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:00:00,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:00:00,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 14:00:00,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:00:00,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:00,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:00:00,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-28 14:00:00,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:00:00,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-28 14:00:00,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:00:00,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:00:00,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:00:00,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:00:00,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:00:00,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:00:00,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 14:00:00,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:00:00,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:00,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:00:00,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-28 14:00:00,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:00:00,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-28 14:00:00,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:00:00,930 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:00:00,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:00:00,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:00:00,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:00:00,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:00:00,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-28 14:00:00,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:00:00,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:00,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:00:00,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-28 14:00:00,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:00:00,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:00:00,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:00:00,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:00:00,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:00:00,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:00:00,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:00:00,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:00:01,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-28 14:00:01,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:00:01,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:01,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:00:01,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-28 14:00:01,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:00:01,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-10-28 14:00:01,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:00:01,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:00:01,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:00:01,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:00:01,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-28 14:00:01,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:00:01,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 14:00:01,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:00:01,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:01,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:00:01,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 14:00:01,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:00:01,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 14:00:01,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:00:01,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:00:01,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:00:01,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:00:01,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 14:00:01,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:00:01,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-28 14:00:01,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:00:01,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:01,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:00:01,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-28 14:00:01,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:00:01,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-28 14:00:01,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:00:01,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:00:01,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:00:01,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:00:01,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-28 14:00:01,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:00:01,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 964 [2020-10-28 14:00:01,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:00:01,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:01,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:00:01,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-28 14:00:01,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:00:01,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-28 14:00:01,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:00:01,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:00:01,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:00:01,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 104 [2020-10-28 14:00:01,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:00:01,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:00:01,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1070 [2020-10-28 14:00:01,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:00:01,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:01,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:00:01,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-28 14:00:01,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:00:01,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-28 14:00:01,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:00:01,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:00:01,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:00:01,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-28 14:00:01,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:00:01,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:00:02,542 INFO L134 CoverageAnalysis]: Checked inductivity of 1376 backedges. 417 proven. 190 refuted. 0 times theorem prover too weak. 769 trivial. 0 not checked. [2020-10-28 14:00:02,543 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1246452768] [2020-10-28 14:00:02,543 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:00:02,543 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 14:00:02,543 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578116459] [2020-10-28 14:00:02,545 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 14:00:02,545 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:00:02,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 14:00:02,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 14:00:02,546 INFO L87 Difference]: Start difference. First operand 27500 states and 29353 transitions. Second operand 7 states. [2020-10-28 14:00:17,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:00:17,399 INFO L93 Difference]: Finished difference Result 66589 states and 72162 transitions. [2020-10-28 14:00:17,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 14:00:17,400 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1189 [2020-10-28 14:00:17,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:00:17,496 INFO L225 Difference]: With dead ends: 66589 [2020-10-28 14:00:17,496 INFO L226 Difference]: Without dead ends: 39797 [2020-10-28 14:00:17,540 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 14:00:17,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39797 states. [2020-10-28 14:00:18,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39797 to 37621. [2020-10-28 14:00:18,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37621 states. [2020-10-28 14:00:18,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37621 states to 37621 states and 40035 transitions. [2020-10-28 14:00:18,229 INFO L78 Accepts]: Start accepts. Automaton has 37621 states and 40035 transitions. Word has length 1189 [2020-10-28 14:00:18,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:00:18,231 INFO L481 AbstractCegarLoop]: Abstraction has 37621 states and 40035 transitions. [2020-10-28 14:00:18,231 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 14:00:18,231 INFO L276 IsEmpty]: Start isEmpty. Operand 37621 states and 40035 transitions. [2020-10-28 14:00:18,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1266 [2020-10-28 14:00:18,260 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:00:18,261 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:00:18,261 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 14:00:18,262 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:00:18,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:00:18,262 INFO L82 PathProgramCache]: Analyzing trace with hash -283712630, now seen corresponding path program 1 times [2020-10-28 14:00:18,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:00:18,263 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1593383474] [2020-10-28 14:00:18,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:00:18,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:00:18,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:19,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:19,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:23,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:00:23,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1293 [2020-10-28 14:00:23,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:00:23,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5083 [2020-10-28 14:00:23,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:00:23,569 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:00:23,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:00:23,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 930 [2020-10-28 14:00:23,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-28 14:00:23,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:00:23,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:00:23,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:00:23,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:23,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:00:23,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:00:23,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:00:23,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:00:23,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:00:23,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:00:23,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:00:23,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:00:23,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:00:23,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:00:23,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 14:00:23,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:00:23,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:23,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:00:23,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-28 14:00:23,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:00:23,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-28 14:00:23,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:00:23,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:00:23,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:00:23,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:00:23,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:00:23,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:00:24,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 14:00:24,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:00:24,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:24,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:00:24,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-28 14:00:24,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:00:24,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-28 14:00:24,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:00:24,143 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:00:24,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:00:24,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:00:24,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:00:24,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:00:24,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-28 14:00:24,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:00:24,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:24,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:00:24,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-28 14:00:24,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:00:24,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:00:24,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:00:24,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:00:24,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:00:24,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:00:24,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:00:24,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:00:24,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-28 14:00:24,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:00:24,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:24,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:00:24,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-28 14:00:24,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:00:24,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-28 14:00:24,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:00:24,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:00:24,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:00:24,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:00:24,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:00:24,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:00:24,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 14:00:24,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:00:24,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:24,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:00:24,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 14:00:24,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:00:24,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 14:00:24,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:00:24,536 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:00:24,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:00:24,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:00:24,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:00:24,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:00:24,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-28 14:00:24,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:00:24,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:24,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:00:24,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 14:00:24,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:00:24,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 14:00:24,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:00:24,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:00:24,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:00:24,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:00:24,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-28 14:00:24,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:00:24,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 918 [2020-10-28 14:00:24,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:00:24,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:24,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:00:24,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-28 14:00:24,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:00:24,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-28 14:00:24,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:00:24,742 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:00:24,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:00:24,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:00:24,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-28 14:00:24,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:00:24,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1040 [2020-10-28 14:00:24,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:00:24,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:24,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:00:24,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-28 14:00:24,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:00:24,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-28 14:00:24,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:00:24,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:00:24,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:00:24,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 104 [2020-10-28 14:00:24,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:00:24,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:00:24,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1146 [2020-10-28 14:00:24,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:00:24,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:24,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:00:24,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-28 14:00:24,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:00:24,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-28 14:00:24,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:00:24,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:00:24,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:00:24,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-28 14:00:24,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:00:24,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:00:25,739 INFO L134 CoverageAnalysis]: Checked inductivity of 1787 backedges. 531 proven. 190 refuted. 0 times theorem prover too weak. 1066 trivial. 0 not checked. [2020-10-28 14:00:25,740 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1593383474] [2020-10-28 14:00:25,740 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:00:25,740 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 14:00:25,740 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002292517] [2020-10-28 14:00:25,741 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 14:00:25,741 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:00:25,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 14:00:25,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 14:00:25,742 INFO L87 Difference]: Start difference. First operand 37621 states and 40035 transitions. Second operand 7 states. [2020-10-28 14:00:35,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:00:35,949 INFO L93 Difference]: Finished difference Result 80975 states and 86144 transitions. [2020-10-28 14:00:35,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 14:00:35,951 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1265 [2020-10-28 14:00:35,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:00:36,023 INFO L225 Difference]: With dead ends: 80975 [2020-10-28 14:00:36,023 INFO L226 Difference]: Without dead ends: 44062 [2020-10-28 14:00:36,074 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 14:00:36,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44062 states. [2020-10-28 14:00:36,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44062 to 41896. [2020-10-28 14:00:36,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41896 states. [2020-10-28 14:00:36,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41896 states to 41896 states and 44400 transitions. [2020-10-28 14:00:36,879 INFO L78 Accepts]: Start accepts. Automaton has 41896 states and 44400 transitions. Word has length 1265 [2020-10-28 14:00:36,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:00:36,881 INFO L481 AbstractCegarLoop]: Abstraction has 41896 states and 44400 transitions. [2020-10-28 14:00:36,881 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 14:00:36,881 INFO L276 IsEmpty]: Start isEmpty. Operand 41896 states and 44400 transitions. [2020-10-28 14:00:36,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1370 [2020-10-28 14:00:36,916 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:00:36,917 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:00:36,918 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 14:00:36,918 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:00:36,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:00:36,918 INFO L82 PathProgramCache]: Analyzing trace with hash -572570744, now seen corresponding path program 1 times [2020-10-28 14:00:36,919 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:00:36,919 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1483744683] [2020-10-28 14:00:36,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:00:37,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:00:37,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:37,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:40,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:41,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:42,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:00:42,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1397 [2020-10-28 14:00:42,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 14:00:42,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-28 14:00:42,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:00:42,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:00:42,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:00:42,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 997 [2020-10-28 14:00:42,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-28 14:00:42,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:00:42,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:00:42,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:00:42,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:42,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:00:42,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:00:42,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:00:42,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:00:42,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:00:42,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:00:42,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:00:42,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:00:42,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:00:42,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:00:42,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 14:00:42,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:00:42,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:42,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:00:42,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-28 14:00:42,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:00:42,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-28 14:00:42,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:00:42,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:00:42,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:00:42,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:00:42,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:00:42,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:00:42,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 14:00:42,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:00:42,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:42,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:00:42,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-28 14:00:42,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:00:42,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-28 14:00:42,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:00:42,842 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:00:42,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:00:42,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:00:42,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:00:42,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:00:42,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-28 14:00:42,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:00:42,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:42,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:00:42,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-28 14:00:42,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:00:42,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:00:42,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:00:42,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:00:42,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:00:42,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:00:42,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:00:42,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:00:43,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-28 14:00:43,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:00:43,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:43,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:00:43,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-28 14:00:43,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:00:43,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-28 14:00:43,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:00:43,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:00:43,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:00:43,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:00:43,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:00:43,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:00:43,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 14:00:43,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:00:43,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:43,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:00:43,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 14:00:43,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:00:43,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 14:00:43,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:00:43,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:00:43,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:00:43,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:00:43,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:00:43,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:00:43,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-28 14:00:43,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:00:43,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:43,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:00:43,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-28 14:00:43,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:00:43,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-28 14:00:43,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:00:43,343 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:00:43,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:00:43,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:00:43,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-28 14:00:43,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:00:43,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 985 [2020-10-28 14:00:43,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:00:43,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:43,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:00:43,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-28 14:00:43,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:00:43,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-28 14:00:43,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:00:43,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:00:43,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:00:43,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:00:43,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-28 14:00:43,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:00:43,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1107 [2020-10-28 14:00:43,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:00:43,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:43,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:00:43,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-28 14:00:43,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:00:43,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 14:00:43,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:00:43,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:00:43,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:00:43,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-10-28 14:00:43,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:00:43,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:00:43,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1203 [2020-10-28 14:00:43,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:00:43,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:43,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:00:43,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-28 14:00:43,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:00:43,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-28 14:00:43,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:00:43,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:00:43,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:00:43,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 133 [2020-10-28 14:00:43,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:00:43,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:00:44,616 INFO L134 CoverageAnalysis]: Checked inductivity of 2152 backedges. 577 proven. 214 refuted. 0 times theorem prover too weak. 1361 trivial. 0 not checked. [2020-10-28 14:00:44,616 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1483744683] [2020-10-28 14:00:44,616 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:00:44,617 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 14:00:44,617 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224251978] [2020-10-28 14:00:44,618 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 14:00:44,618 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:00:44,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 14:00:44,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 14:00:44,618 INFO L87 Difference]: Start difference. First operand 41896 states and 44400 transitions. Second operand 7 states. [2020-10-28 14:00:57,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:00:57,573 INFO L93 Difference]: Finished difference Result 97971 states and 104841 transitions. [2020-10-28 14:00:57,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 14:00:57,575 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1369 [2020-10-28 14:00:57,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:00:57,684 INFO L225 Difference]: With dead ends: 97971 [2020-10-28 14:00:57,684 INFO L226 Difference]: Without dead ends: 56783 [2020-10-28 14:00:57,732 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-28 14:00:57,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56783 states. [2020-10-28 14:00:58,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56783 to 56051. [2020-10-28 14:00:58,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56051 states. [2020-10-28 14:00:58,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56051 states to 56051 states and 59258 transitions. [2020-10-28 14:00:58,970 INFO L78 Accepts]: Start accepts. Automaton has 56051 states and 59258 transitions. Word has length 1369 [2020-10-28 14:00:58,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:00:58,971 INFO L481 AbstractCegarLoop]: Abstraction has 56051 states and 59258 transitions. [2020-10-28 14:00:58,971 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 14:00:58,971 INFO L276 IsEmpty]: Start isEmpty. Operand 56051 states and 59258 transitions. [2020-10-28 14:00:59,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1431 [2020-10-28 14:00:59,006 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:00:59,008 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:00:59,008 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 14:00:59,008 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:00:59,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:00:59,009 INFO L82 PathProgramCache]: Analyzing trace with hash -597774939, now seen corresponding path program 1 times [2020-10-28 14:00:59,009 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:00:59,009 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [633445606] [2020-10-28 14:00:59,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY