/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label44.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 04:58:46,056 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 04:58:46,062 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 04:58:46,126 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 04:58:46,127 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 04:58:46,135 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 04:58:46,137 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 04:58:46,143 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 04:58:46,146 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 04:58:46,153 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 04:58:46,154 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 04:58:46,156 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 04:58:46,156 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 04:58:46,160 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 04:58:46,162 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 04:58:46,164 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 04:58:46,166 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 04:58:46,169 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 04:58:46,177 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 04:58:46,186 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 04:58:46,188 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 04:58:46,190 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 04:58:46,192 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 04:58:46,195 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 04:58:46,220 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 04:58:46,220 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 04:58:46,221 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 04:58:46,223 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 04:58:46,224 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 04:58:46,225 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 04:58:46,226 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 04:58:46,226 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 04:58:46,229 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 04:58:46,230 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 04:58:46,231 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 04:58:46,231 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 04:58:46,232 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 04:58:46,232 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 04:58:46,233 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 04:58:46,234 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 04:58:46,235 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 04:58:46,243 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 04:58:46,302 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 04:58:46,302 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 04:58:46,307 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 04:58:46,308 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 04:58:46,308 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 04:58:46,308 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 04:58:46,309 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 04:58:46,309 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 04:58:46,309 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 04:58:46,309 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 04:58:46,311 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 04:58:46,311 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 04:58:46,311 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 04:58:46,311 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 04:58:46,312 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 04:58:46,312 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 04:58:46,312 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 04:58:46,313 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 04:58:46,313 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 04:58:46,313 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 04:58:46,313 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 04:58:46,314 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 04:58:46,314 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 04:58:46,314 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 04:58:46,315 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 04:58:46,315 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 04:58:46,315 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 04:58:46,315 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 04:58:46,316 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 04:58:46,316 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 04:58:46,808 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 04:58:46,841 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 04:58:46,844 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 04:58:46,846 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 04:58:46,847 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 04:58:46,848 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label44.c [2020-10-29 04:58:46,922 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bc72a2d9d/80098c2e486149d8bd1dd4105c8c50b4/FLAG11cb8033d [2020-10-29 04:58:47,760 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 04:58:47,761 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem03_label44.c [2020-10-29 04:58:47,778 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bc72a2d9d/80098c2e486149d8bd1dd4105c8c50b4/FLAG11cb8033d [2020-10-29 04:58:47,924 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bc72a2d9d/80098c2e486149d8bd1dd4105c8c50b4 [2020-10-29 04:58:47,927 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 04:58:47,934 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 04:58:47,937 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 04:58:47,938 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 04:58:47,941 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 04:58:47,943 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:58:47" (1/1) ... [2020-10-29 04:58:47,948 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72a9b7fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:58:47, skipping insertion in model container [2020-10-29 04:58:47,948 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:58:47" (1/1) ... [2020-10-29 04:58:47,958 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 04:58:48,034 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 04:58:48,777 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 04:58:48,796 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 04:58:49,159 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 04:58:49,181 INFO L208 MainTranslator]: Completed translation [2020-10-29 04:58:49,182 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:58:49 WrapperNode [2020-10-29 04:58:49,182 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 04:58:49,183 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 04:58:49,183 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 04:58:49,184 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 04:58:49,197 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:58:49" (1/1) ... [2020-10-29 04:58:49,198 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:58:49" (1/1) ... [2020-10-29 04:58:49,245 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:58:49" (1/1) ... [2020-10-29 04:58:49,245 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:58:49" (1/1) ... [2020-10-29 04:58:49,380 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:58:49" (1/1) ... [2020-10-29 04:58:49,414 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:58:49" (1/1) ... [2020-10-29 04:58:49,431 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:58:49" (1/1) ... [2020-10-29 04:58:49,445 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 04:58:49,447 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 04:58:49,448 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 04:58:49,448 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 04:58:49,449 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:58:49" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 04:58:49,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 04:58:49,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 04:58:49,540 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 04:58:49,540 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 04:58:49,540 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 04:58:49,540 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 04:58:49,541 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 04:58:49,541 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 04:58:49,541 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 04:58:49,541 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 04:58:49,541 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 04:58:49,541 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 04:58:49,541 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 04:58:49,542 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 04:58:49,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 04:58:49,542 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 04:58:49,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 04:58:49,542 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 04:58:49,542 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 04:58:51,640 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 04:58:51,641 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 04:58:51,643 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:58:51 BoogieIcfgContainer [2020-10-29 04:58:51,643 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 04:58:51,645 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 04:58:51,645 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 04:58:51,649 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 04:58:51,649 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 04:58:47" (1/3) ... [2020-10-29 04:58:51,650 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51dea64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:58:51, skipping insertion in model container [2020-10-29 04:58:51,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:58:49" (2/3) ... [2020-10-29 04:58:51,651 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51dea64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:58:51, skipping insertion in model container [2020-10-29 04:58:51,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:58:51" (3/3) ... [2020-10-29 04:58:51,653 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem03_label44.c [2020-10-29 04:58:51,667 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 04:58:51,673 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 04:58:51,688 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 04:58:51,723 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 04:58:51,724 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 04:58:51,724 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 04:58:51,724 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 04:58:51,724 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 04:58:51,724 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 04:58:51,725 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 04:58:51,725 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 04:58:51,752 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states. [2020-10-29 04:58:51,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-10-29 04:58:51,771 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:58:51,772 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:58:51,773 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:58:51,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:58:51,780 INFO L82 PathProgramCache]: Analyzing trace with hash -764952528, now seen corresponding path program 1 times [2020-10-29 04:58:51,791 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:58:51,791 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1850783279] [2020-10-29 04:58:51,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:58:52,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:58:52,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:53,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:56,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:58:56,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-29 04:58:56,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:58:56,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3919 [2020-10-29 04:58:56,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:58:56,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:58:56,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 04:58:56,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 04:58:56,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 185 [2020-10-29 04:58:56,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 04:58:56,636 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:58:56,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:58:56,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:58:56,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:56,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:58:56,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:58:56,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:58:56,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-29 04:58:56,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:58:56,707 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:58:56,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:58:56,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:58:56,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 04:58:56,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:58:56,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:58:56,806 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1850783279] [2020-10-29 04:58:56,809 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 04:58:56,810 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 04:58:56,811 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604486672] [2020-10-29 04:58:56,818 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 04:58:56,819 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:58:56,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 04:58:56,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 04:58:56,844 INFO L87 Difference]: Start difference. First operand 315 states. Second operand 4 states. [2020-10-29 04:58:57,162 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:59:00,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:59:00,896 INFO L93 Difference]: Finished difference Result 889 states and 1542 transitions. [2020-10-29 04:59:00,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 04:59:00,898 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 184 [2020-10-29 04:59:00,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:59:00,918 INFO L225 Difference]: With dead ends: 889 [2020-10-29 04:59:00,918 INFO L226 Difference]: Without dead ends: 481 [2020-10-29 04:59:00,927 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:59:00,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2020-10-29 04:59:01,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 476. [2020-10-29 04:59:01,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 476 states. [2020-10-29 04:59:01,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 729 transitions. [2020-10-29 04:59:01,032 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 729 transitions. Word has length 184 [2020-10-29 04:59:01,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:59:01,034 INFO L481 AbstractCegarLoop]: Abstraction has 476 states and 729 transitions. [2020-10-29 04:59:01,034 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 04:59:01,034 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 729 transitions. [2020-10-29 04:59:01,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-10-29 04:59:01,043 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:59:01,043 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 04:59:01,044 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 04:59:01,044 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:59:01,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:59:01,045 INFO L82 PathProgramCache]: Analyzing trace with hash -77976735, now seen corresponding path program 1 times [2020-10-29 04:59:01,045 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:59:01,046 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [289401113] [2020-10-29 04:59:01,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:59:01,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:01,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:01,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:03,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:03,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 205 [2020-10-29 04:59:03,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:59:03,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2828 [2020-10-29 04:59:03,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:03,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:03,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:59:03,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-29 04:59:03,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 182 [2020-10-29 04:59:03,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:59:04,333 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:59:04,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:59:04,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:04,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:04,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:04,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:59:04,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:59:04,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 04:59:04,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:04,353 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:04,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:59:04,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:59:04,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:59:04,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:59:04,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:59:04,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:04,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:04,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:04,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 04:59:04,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:59:04,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 04:59:04,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:04,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:04,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:59:04,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:59:04,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 04:59:04,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:59:04,567 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:59:04,567 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [289401113] [2020-10-29 04:59:04,568 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:59:04,568 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 04:59:04,568 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669687702] [2020-10-29 04:59:04,570 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 04:59:04,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:59:04,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 04:59:04,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:59:04,572 INFO L87 Difference]: Start difference. First operand 476 states and 729 transitions. Second operand 5 states. [2020-10-29 04:59:04,970 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:59:08,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:59:08,665 INFO L93 Difference]: Finished difference Result 1396 states and 2172 transitions. [2020-10-29 04:59:08,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 04:59:08,669 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 193 [2020-10-29 04:59:08,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:59:08,679 INFO L225 Difference]: With dead ends: 1396 [2020-10-29 04:59:08,679 INFO L226 Difference]: Without dead ends: 926 [2020-10-29 04:59:08,682 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 04:59:08,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2020-10-29 04:59:08,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 904. [2020-10-29 04:59:08,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 904 states. [2020-10-29 04:59:08,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 1372 transitions. [2020-10-29 04:59:08,752 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 1372 transitions. Word has length 193 [2020-10-29 04:59:08,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:59:08,753 INFO L481 AbstractCegarLoop]: Abstraction has 904 states and 1372 transitions. [2020-10-29 04:59:08,754 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 04:59:08,754 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 1372 transitions. [2020-10-29 04:59:08,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-10-29 04:59:08,760 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:59:08,761 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 04:59:08,761 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 04:59:08,761 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:59:08,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:59:08,762 INFO L82 PathProgramCache]: Analyzing trace with hash 392601999, now seen corresponding path program 1 times [2020-10-29 04:59:08,763 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:59:08,763 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1976961370] [2020-10-29 04:59:08,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:59:08,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:08,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:09,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:10,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:11,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:11,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 208 [2020-10-29 04:59:11,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 04:59:11,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2930 [2020-10-29 04:59:11,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:11,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:11,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:59:11,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-29 04:59:11,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 182 [2020-10-29 04:59:11,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 04:59:12,169 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:59:12,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:59:12,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:12,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:12,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:12,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:59:12,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:59:12,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 04:59:12,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:12,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:12,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:59:12,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:59:12,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:59:12,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:59:12,341 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-29 04:59:12,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:59:12,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:12,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:12,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:12,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 04:59:12,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:59:12,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-29 04:59:12,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:12,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:12,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:59:12,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:59:12,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 04:59:12,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:59:12,566 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:59:12,567 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1976961370] [2020-10-29 04:59:12,567 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:59:12,567 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 04:59:12,568 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768694159] [2020-10-29 04:59:12,569 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 04:59:12,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:59:12,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 04:59:12,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:59:12,571 INFO L87 Difference]: Start difference. First operand 904 states and 1372 transitions. Second operand 5 states. [2020-10-29 04:59:13,021 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:59:16,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:59:16,374 INFO L93 Difference]: Finished difference Result 2645 states and 4087 transitions. [2020-10-29 04:59:16,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 04:59:16,375 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 196 [2020-10-29 04:59:16,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:59:16,388 INFO L225 Difference]: With dead ends: 2645 [2020-10-29 04:59:16,388 INFO L226 Difference]: Without dead ends: 1747 [2020-10-29 04:59:16,392 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 04:59:16,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1747 states. [2020-10-29 04:59:16,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1747 to 1740. [2020-10-29 04:59:16,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1740 states. [2020-10-29 04:59:16,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1740 states to 1740 states and 2376 transitions. [2020-10-29 04:59:16,472 INFO L78 Accepts]: Start accepts. Automaton has 1740 states and 2376 transitions. Word has length 196 [2020-10-29 04:59:16,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:59:16,473 INFO L481 AbstractCegarLoop]: Abstraction has 1740 states and 2376 transitions. [2020-10-29 04:59:16,473 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 04:59:16,473 INFO L276 IsEmpty]: Start isEmpty. Operand 1740 states and 2376 transitions. [2020-10-29 04:59:16,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-10-29 04:59:16,481 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:59:16,481 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 04:59:16,481 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 04:59:16,481 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:59:16,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:59:16,482 INFO L82 PathProgramCache]: Analyzing trace with hash 1805555469, now seen corresponding path program 1 times [2020-10-29 04:59:16,482 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:59:16,483 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [304063572] [2020-10-29 04:59:16,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:59:16,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:16,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:17,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:18,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:18,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 215 [2020-10-29 04:59:18,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:59:18,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2401 [2020-10-29 04:59:18,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:18,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:18,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:59:18,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-29 04:59:18,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 182 [2020-10-29 04:59:18,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:59:19,325 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:59:19,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:59:19,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:19,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:19,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:19,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:59:19,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:59:19,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 04:59:19,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:19,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:19,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:59:19,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:59:19,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:59:19,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:59:19,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:59:19,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:19,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:19,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:19,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 04:59:19,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:59:19,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-29 04:59:19,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:19,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:19,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:59:19,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:59:19,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 04:59:19,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:19,623 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:59:19,623 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [304063572] [2020-10-29 04:59:19,624 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:59:19,625 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 04:59:19,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636380343] [2020-10-29 04:59:19,626 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 04:59:19,626 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:59:19,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 04:59:19,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:59:19,637 INFO L87 Difference]: Start difference. First operand 1740 states and 2376 transitions. Second operand 5 states. [2020-10-29 04:59:20,066 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:59:23,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:59:23,795 INFO L93 Difference]: Finished difference Result 4751 states and 6663 transitions. [2020-10-29 04:59:23,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 04:59:23,797 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 203 [2020-10-29 04:59:23,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:59:23,816 INFO L225 Difference]: With dead ends: 4751 [2020-10-29 04:59:23,816 INFO L226 Difference]: Without dead ends: 3017 [2020-10-29 04:59:23,821 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 04:59:23,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3017 states. [2020-10-29 04:59:23,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3017 to 2579. [2020-10-29 04:59:23,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2579 states. [2020-10-29 04:59:23,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2579 states to 2579 states and 3662 transitions. [2020-10-29 04:59:23,930 INFO L78 Accepts]: Start accepts. Automaton has 2579 states and 3662 transitions. Word has length 203 [2020-10-29 04:59:23,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:59:23,930 INFO L481 AbstractCegarLoop]: Abstraction has 2579 states and 3662 transitions. [2020-10-29 04:59:23,931 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 04:59:23,931 INFO L276 IsEmpty]: Start isEmpty. Operand 2579 states and 3662 transitions. [2020-10-29 04:59:23,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-10-29 04:59:23,940 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:59:23,940 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:59:23,940 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 04:59:23,941 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:59:23,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:59:23,941 INFO L82 PathProgramCache]: Analyzing trace with hash 933002735, now seen corresponding path program 1 times [2020-10-29 04:59:23,941 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:59:23,942 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1330063911] [2020-10-29 04:59:23,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:59:23,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:24,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:24,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:24,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:24,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:25,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:25,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:27,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:27,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:29,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:29,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-29 04:59:29,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 04:59:29,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-10-29 04:59:29,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:29,035 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:29,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:59:29,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-29 04:59:29,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 183 [2020-10-29 04:59:29,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:29,426 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:59:29,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:59:29,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:29,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:29,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:29,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:59:29,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:59:29,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 04:59:29,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:29,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:29,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:59:29,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:59:29,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:59:29,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:59:29,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:59:29,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:29,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:29,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:29,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-29 04:59:29,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:59:29,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 04:59:29,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:29,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:29,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:59:29,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:59:29,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:59:29,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:59:29,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-29 04:59:29,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:29,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:29,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:29,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:29,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 04:59:29,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:59:29,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 04:59:29,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:29,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:29,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:59:29,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:59:29,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 04:59:29,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:29,742 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 21 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 04:59:29,742 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1330063911] [2020-10-29 04:59:29,742 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:59:29,742 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 04:59:29,743 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602636438] [2020-10-29 04:59:29,744 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 04:59:29,744 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:59:29,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 04:59:29,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:59:29,745 INFO L87 Difference]: Start difference. First operand 2579 states and 3662 transitions. Second operand 5 states. [2020-10-29 04:59:30,383 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 04:59:33,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:59:33,587 INFO L93 Difference]: Finished difference Result 7672 states and 10984 transitions. [2020-10-29 04:59:33,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 04:59:33,587 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 212 [2020-10-29 04:59:33,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:59:33,604 INFO L225 Difference]: With dead ends: 7672 [2020-10-29 04:59:33,604 INFO L226 Difference]: Without dead ends: 2582 [2020-10-29 04:59:33,617 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 04:59:33,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2582 states. [2020-10-29 04:59:33,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2582 to 2578. [2020-10-29 04:59:33,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2578 states. [2020-10-29 04:59:33,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2578 states to 2578 states and 3660 transitions. [2020-10-29 04:59:33,719 INFO L78 Accepts]: Start accepts. Automaton has 2578 states and 3660 transitions. Word has length 212 [2020-10-29 04:59:33,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:59:33,719 INFO L481 AbstractCegarLoop]: Abstraction has 2578 states and 3660 transitions. [2020-10-29 04:59:33,719 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 04:59:33,720 INFO L276 IsEmpty]: Start isEmpty. Operand 2578 states and 3660 transitions. [2020-10-29 04:59:33,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2020-10-29 04:59:33,729 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:59:33,731 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:59:33,731 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 04:59:33,731 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:59:33,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:59:33,732 INFO L82 PathProgramCache]: Analyzing trace with hash 2080803544, now seen corresponding path program 1 times [2020-10-29 04:59:33,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:59:33,732 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1963157963] [2020-10-29 04:59:33,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:59:33,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:33,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:33,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:35,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:37,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:37,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 232 [2020-10-29 04:59:37,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 04:59:37,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3437 [2020-10-29 04:59:37,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:37,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:37,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:59:37,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-29 04:59:37,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 182 [2020-10-29 04:59:37,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:37,699 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:59:37,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:59:37,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:37,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:37,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:37,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:59:37,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:59:37,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 04:59:37,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:37,718 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:37,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:59:37,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:59:37,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:59:37,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:37,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:59:37,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:37,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:37,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:37,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-29 04:59:37,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:59:37,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-29 04:59:37,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:37,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:37,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:59:37,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:59:37,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-29 04:59:37,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:38,099 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 32 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:59:38,100 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1963157963] [2020-10-29 04:59:38,101 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:59:38,101 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 04:59:38,101 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313972693] [2020-10-29 04:59:38,102 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 04:59:38,102 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:59:38,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 04:59:38,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:59:38,103 INFO L87 Difference]: Start difference. First operand 2578 states and 3660 transitions. Second operand 5 states. [2020-10-29 04:59:38,521 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 04:59:41,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:59:41,932 INFO L93 Difference]: Finished difference Result 7684 states and 11185 transitions. [2020-10-29 04:59:41,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 04:59:41,934 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 220 [2020-10-29 04:59:41,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:59:41,964 INFO L225 Difference]: With dead ends: 7684 [2020-10-29 04:59:41,965 INFO L226 Difference]: Without dead ends: 5112 [2020-10-29 04:59:41,974 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 04:59:41,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5112 states. [2020-10-29 04:59:42,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5112 to 4676. [2020-10-29 04:59:42,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4676 states. [2020-10-29 04:59:42,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4676 states to 4676 states and 6745 transitions. [2020-10-29 04:59:42,163 INFO L78 Accepts]: Start accepts. Automaton has 4676 states and 6745 transitions. Word has length 220 [2020-10-29 04:59:42,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:59:42,164 INFO L481 AbstractCegarLoop]: Abstraction has 4676 states and 6745 transitions. [2020-10-29 04:59:42,164 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 04:59:42,164 INFO L276 IsEmpty]: Start isEmpty. Operand 4676 states and 6745 transitions. [2020-10-29 04:59:42,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-10-29 04:59:42,181 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:59:42,181 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:59:42,182 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 04:59:42,182 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:59:42,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:59:42,182 INFO L82 PathProgramCache]: Analyzing trace with hash 757458375, now seen corresponding path program 1 times [2020-10-29 04:59:42,183 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:59:42,183 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1148080732] [2020-10-29 04:59:42,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:59:42,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:42,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:42,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:44,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:47,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:47,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 254 [2020-10-29 04:59:47,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 04:59:47,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5111 [2020-10-29 04:59:47,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:47,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:47,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 04:59:47,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-29 04:59:47,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 222 [2020-10-29 04:59:47,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:47,777 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:59:47,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:59:47,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:47,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:47,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:47,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:59:47,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:59:47,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 04:59:47,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:47,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:47,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:59:47,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:59:47,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:59:47,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:47,955 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-29 04:59:47,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:59:47,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:47,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:47,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:47,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-29 04:59:47,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:59:47,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-29 04:59:47,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:47,998 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:47,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:59:47,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:59:47,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 04:59:47,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:48,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-29 04:59:48,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:48,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:48,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:48,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:48,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-29 04:59:48,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:59:48,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-29 04:59:48,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:48,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:48,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:59:48,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:59:48,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-29 04:59:48,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:48,367 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 59 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 04:59:48,368 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1148080732] [2020-10-29 04:59:48,368 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:59:48,368 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 04:59:48,368 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498910774] [2020-10-29 04:59:48,369 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 04:59:48,369 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:59:48,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 04:59:48,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 04:59:48,370 INFO L87 Difference]: Start difference. First operand 4676 states and 6745 transitions. Second operand 6 states. [2020-10-29 04:59:48,741 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:59:52,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:59:52,299 INFO L93 Difference]: Finished difference Result 13451 states and 20849 transitions. [2020-10-29 04:59:52,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 04:59:52,300 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 240 [2020-10-29 04:59:52,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:59:52,361 INFO L225 Difference]: With dead ends: 13451 [2020-10-29 04:59:52,361 INFO L226 Difference]: Without dead ends: 8781 [2020-10-29 04:59:52,376 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-10-29 04:59:52,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8781 states. [2020-10-29 04:59:52,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8781 to 8485. [2020-10-29 04:59:52,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8485 states. [2020-10-29 04:59:52,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8485 states to 8485 states and 12438 transitions. [2020-10-29 04:59:52,798 INFO L78 Accepts]: Start accepts. Automaton has 8485 states and 12438 transitions. Word has length 240 [2020-10-29 04:59:52,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:59:52,799 INFO L481 AbstractCegarLoop]: Abstraction has 8485 states and 12438 transitions. [2020-10-29 04:59:52,799 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 04:59:52,799 INFO L276 IsEmpty]: Start isEmpty. Operand 8485 states and 12438 transitions. [2020-10-29 04:59:52,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-10-29 04:59:52,831 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:59:52,832 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:59:52,832 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 04:59:52,832 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:59:52,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:59:52,833 INFO L82 PathProgramCache]: Analyzing trace with hash 1570965649, now seen corresponding path program 1 times [2020-10-29 04:59:52,833 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:59:52,834 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1151710413] [2020-10-29 04:59:52,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:59:52,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:52,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:53,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:54,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:57,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:57,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 255 [2020-10-29 04:59:57,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 04:59:57,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-29 04:59:57,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:57,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:57,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 04:59:57,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-29 04:59:57,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 222 [2020-10-29 04:59:57,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:58,332 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:59:58,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:59:58,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:58,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:58,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:58,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:59:58,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:59:58,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 04:59:58,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:58,349 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:58,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:59:58,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:59:58,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:59:58,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:58,474 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-29 04:59:58,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:59:58,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:58,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:58,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:58,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 04:59:58,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:59:58,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-29 04:59:58,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:58,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:58,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:59:58,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:59:58,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 04:59:58,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:59:58,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-29 04:59:58,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:58,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:58,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:58,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-29 04:59:58,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:59:58,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-29 04:59:58,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:58,726 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:58,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:59:58,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:59:58,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-29 04:59:58,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:58,906 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 30 proven. 39 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 04:59:58,912 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1151710413] [2020-10-29 04:59:58,912 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:59:58,912 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 04:59:58,912 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181157610] [2020-10-29 04:59:58,913 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 04:59:58,913 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:59:58,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 04:59:58,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 04:59:58,914 INFO L87 Difference]: Start difference. First operand 8485 states and 12438 transitions. Second operand 7 states. [2020-10-29 04:59:59,324 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 04:59:59,601 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:00:04,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:00:04,968 INFO L93 Difference]: Finished difference Result 21216 states and 34389 transitions. [2020-10-29 05:00:04,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 05:00:04,969 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 241 [2020-10-29 05:00:04,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:00:05,084 INFO L225 Difference]: With dead ends: 21216 [2020-10-29 05:00:05,084 INFO L226 Difference]: Without dead ends: 12737 [2020-10-29 05:00:05,118 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-10-29 05:00:05,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12737 states. [2020-10-29 05:00:05,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12737 to 12325. [2020-10-29 05:00:05,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12325 states. [2020-10-29 05:00:05,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12325 states to 12325 states and 18461 transitions. [2020-10-29 05:00:05,774 INFO L78 Accepts]: Start accepts. Automaton has 12325 states and 18461 transitions. Word has length 241 [2020-10-29 05:00:05,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:00:05,775 INFO L481 AbstractCegarLoop]: Abstraction has 12325 states and 18461 transitions. [2020-10-29 05:00:05,775 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 05:00:05,775 INFO L276 IsEmpty]: Start isEmpty. Operand 12325 states and 18461 transitions. [2020-10-29 05:00:05,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2020-10-29 05:00:05,925 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:00:05,925 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:00:05,926 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 05:00:05,926 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:00:05,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:00:05,929 INFO L82 PathProgramCache]: Analyzing trace with hash -469778570, now seen corresponding path program 1 times [2020-10-29 05:00:05,930 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:00:05,931 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1809922143] [2020-10-29 05:00:05,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:00:06,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:06,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:06,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:06,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:07,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:10,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:11,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:11,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 279 [2020-10-29 05:00:11,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 05:00:11,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-29 05:00:11,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:11,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:11,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 05:00:11,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-29 05:00:11,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-29 05:00:11,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:11,315 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:00:11,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:00:11,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:11,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:11,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:11,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:00:11,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:00:11,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 05:00:11,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:11,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:11,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:00:11,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:00:11,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:00:11,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:11,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:00:11,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:11,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:11,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:11,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-29 05:00:11,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:00:11,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-29 05:00:11,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:11,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:11,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:00:11,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:00:11,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 05:00:11,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:11,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-29 05:00:11,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:11,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:11,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:11,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:11,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-29 05:00:11,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:00:11,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-29 05:00:11,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:11,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:11,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:00:11,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:00:11,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 05:00:11,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:11,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-29 05:00:11,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:11,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:11,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:11,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-29 05:00:11,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:00:11,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-29 05:00:11,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:11,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:11,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:00:11,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:00:11,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-29 05:00:11,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:12,148 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 100 proven. 22 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-29 05:00:12,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1809922143] [2020-10-29 05:00:12,149 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:00:12,149 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 05:00:12,149 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460629816] [2020-10-29 05:00:12,150 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 05:00:12,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:00:12,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 05:00:12,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-29 05:00:12,151 INFO L87 Difference]: Start difference. First operand 12325 states and 18461 transitions. Second operand 8 states. [2020-10-29 05:00:12,556 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:00:13,141 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-29 05:00:19,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:00:19,323 INFO L93 Difference]: Finished difference Result 48681 states and 84024 transitions. [2020-10-29 05:00:19,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 05:00:19,324 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 263 [2020-10-29 05:00:19,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:00:19,637 INFO L225 Difference]: With dead ends: 48681 [2020-10-29 05:00:19,637 INFO L226 Difference]: Without dead ends: 36362 [2020-10-29 05:00:19,700 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-29 05:00:19,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36362 states. [2020-10-29 05:00:21,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36362 to 35256. [2020-10-29 05:00:21,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35256 states. [2020-10-29 05:00:21,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35256 states to 35256 states and 54735 transitions. [2020-10-29 05:00:21,538 INFO L78 Accepts]: Start accepts. Automaton has 35256 states and 54735 transitions. Word has length 263 [2020-10-29 05:00:21,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:00:21,538 INFO L481 AbstractCegarLoop]: Abstraction has 35256 states and 54735 transitions. [2020-10-29 05:00:21,538 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 05:00:21,538 INFO L276 IsEmpty]: Start isEmpty. Operand 35256 states and 54735 transitions. [2020-10-29 05:00:21,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2020-10-29 05:00:21,704 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:00:21,705 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:00:21,705 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 05:00:21,705 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:00:21,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:00:21,706 INFO L82 PathProgramCache]: Analyzing trace with hash -2062083732, now seen corresponding path program 1 times [2020-10-29 05:00:21,706 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:00:21,706 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1471437268] [2020-10-29 05:00:21,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:00:21,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:21,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:21,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:22,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:23,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:26,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:26,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 280 [2020-10-29 05:00:26,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 05:00:26,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-29 05:00:26,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:26,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:26,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 05:00:26,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-29 05:00:26,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-29 05:00:26,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:27,070 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:00:27,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:00:27,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:27,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:27,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:27,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:00:27,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:00:27,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 05:00:27,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:27,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:27,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:00:27,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:00:27,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:00:27,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:27,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:00:27,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:27,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:27,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:27,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 05:00:27,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:00:27,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-29 05:00:27,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:27,233 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:27,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:00:27,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:00:27,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 05:00:27,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:00:27,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-29 05:00:27,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:27,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:27,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:27,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-29 05:00:27,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:00:27,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-29 05:00:27,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:27,373 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:27,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:00:27,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:00:27,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 05:00:27,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:27,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-29 05:00:27,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:27,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:27,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:27,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-29 05:00:27,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:00:27,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-29 05:00:27,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:27,570 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:27,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:00:27,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:00:27,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-29 05:00:27,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:27,749 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 103 proven. 6 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-10-29 05:00:27,749 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1471437268] [2020-10-29 05:00:27,751 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:00:27,752 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 05:00:27,752 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740597315] [2020-10-29 05:00:27,753 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 05:00:27,753 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:00:27,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 05:00:27,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 05:00:27,754 INFO L87 Difference]: Start difference. First operand 35256 states and 54735 transitions. Second operand 8 states. [2020-10-29 05:00:28,024 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-29 05:00:28,834 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-29 05:00:29,807 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-29 05:00:34,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:00:34,303 INFO L93 Difference]: Finished difference Result 108513 states and 173683 transitions. [2020-10-29 05:00:34,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 05:00:34,303 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 264 [2020-10-29 05:00:34,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:00:34,726 INFO L225 Difference]: With dead ends: 108513 [2020-10-29 05:00:34,726 INFO L226 Difference]: Without dead ends: 73263 [2020-10-29 05:00:34,827 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-10-29 05:00:34,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73263 states. [2020-10-29 05:00:38,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73263 to 71298. [2020-10-29 05:00:38,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71298 states. [2020-10-29 05:00:38,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71298 states to 71298 states and 104060 transitions. [2020-10-29 05:00:38,639 INFO L78 Accepts]: Start accepts. Automaton has 71298 states and 104060 transitions. Word has length 264 [2020-10-29 05:00:38,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:00:38,639 INFO L481 AbstractCegarLoop]: Abstraction has 71298 states and 104060 transitions. [2020-10-29 05:00:38,639 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 05:00:38,639 INFO L276 IsEmpty]: Start isEmpty. Operand 71298 states and 104060 transitions. [2020-10-29 05:00:38,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2020-10-29 05:00:38,938 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:00:38,938 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:00:38,939 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 05:00:38,939 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:00:38,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:00:38,942 INFO L82 PathProgramCache]: Analyzing trace with hash -2027112063, now seen corresponding path program 1 times [2020-10-29 05:00:38,942 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:00:38,943 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [229029260] [2020-10-29 05:00:38,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:00:38,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:39,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:39,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:39,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:39,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:39,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:41,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:44,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:44,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 299 [2020-10-29 05:00:44,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 05:00:44,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5051 [2020-10-29 05:00:44,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:44,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:44,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:00:44,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-29 05:00:44,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-29 05:00:44,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:44,348 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:00:44,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:00:44,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:44,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:44,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:44,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:00:44,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:00:44,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 05:00:44,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:44,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:44,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:00:44,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:00:44,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:00:44,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:44,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:00:44,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:44,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:44,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:44,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 05:00:44,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:00:44,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 05:00:44,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:44,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:44,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:00:44,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:00:44,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:00:44,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:44,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 05:00:44,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:44,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:44,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:44,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 05:00:44,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:00:44,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 05:00:44,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:44,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:44,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:00:44,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:00:44,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:00:44,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:44,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-29 05:00:44,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:44,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:44,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:44,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-29 05:00:44,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:00:44,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-29 05:00:44,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:44,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:44,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:00:44,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:00:44,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 05:00:44,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:44,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-29 05:00:44,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:44,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:44,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:44,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-29 05:00:44,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:00:44,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-29 05:00:44,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:44,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:44,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:00:44,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:00:44,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-29 05:00:44,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:44,874 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 141 proven. 2 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2020-10-29 05:00:44,875 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [229029260] [2020-10-29 05:00:44,875 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:00:44,875 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 05:00:44,875 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444004199] [2020-10-29 05:00:44,876 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 05:00:44,876 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:00:44,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 05:00:44,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 05:00:44,877 INFO L87 Difference]: Start difference. First operand 71298 states and 104060 transitions. Second operand 7 states. [2020-10-29 05:00:45,457 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:00:45,959 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:00:53,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:00:53,714 INFO L93 Difference]: Finished difference Result 198949 states and 355796 transitions. [2020-10-29 05:00:53,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 05:00:53,715 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 281 [2020-10-29 05:00:53,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:00:55,349 INFO L225 Difference]: With dead ends: 198949 [2020-10-29 05:00:55,349 INFO L226 Difference]: Without dead ends: 128291 [2020-10-29 05:00:55,502 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 05:00:55,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128291 states. [2020-10-29 05:01:01,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128291 to 122220. [2020-10-29 05:01:01,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122220 states. [2020-10-29 05:01:02,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122220 states to 122220 states and 173965 transitions. [2020-10-29 05:01:02,154 INFO L78 Accepts]: Start accepts. Automaton has 122220 states and 173965 transitions. Word has length 281 [2020-10-29 05:01:02,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:01:02,155 INFO L481 AbstractCegarLoop]: Abstraction has 122220 states and 173965 transitions. [2020-10-29 05:01:02,155 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 05:01:02,155 INFO L276 IsEmpty]: Start isEmpty. Operand 122220 states and 173965 transitions. [2020-10-29 05:01:02,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2020-10-29 05:01:02,499 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:01:02,499 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:01:02,500 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 05:01:02,500 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:01:02,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:01:02,501 INFO L82 PathProgramCache]: Analyzing trace with hash 539169782, now seen corresponding path program 1 times [2020-10-29 05:01:02,501 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:01:02,501 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2042802266] [2020-10-29 05:01:02,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:01:02,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:02,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:02,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:03,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:03,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:03,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:04,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:05,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:07,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:07,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 315 [2020-10-29 05:01:07,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 05:01:07,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-10-29 05:01:07,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:07,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:07,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 05:01:07,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-29 05:01:07,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-29 05:01:07,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:07,915 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:01:07,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:01:07,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:07,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:07,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:07,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:01:07,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:01:07,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 05:01:07,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:07,941 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:07,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:01:07,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:01:07,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:01:07,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:08,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:01:08,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:08,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:08,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:08,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 05:01:08,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:01:08,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 05:01:08,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:08,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:08,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:01:08,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:01:08,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:01:08,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:08,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 05:01:08,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:08,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:08,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:08,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 05:01:08,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:01:08,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-29 05:01:08,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:08,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:08,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:01:08,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:01:08,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 05:01:08,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:08,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-29 05:01:08,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:08,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:08,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:08,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:08,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 05:01:08,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:01:08,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 05:01:08,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:08,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:08,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:01:08,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:01:08,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 05:01:08,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:08,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 05:01:08,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:08,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:08,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:08,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-29 05:01:08,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:01:08,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-29 05:01:08,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:08,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:08,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 05:01:08,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:01:08,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 05:01:08,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:08,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-29 05:01:08,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:08,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:08,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:08,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-29 05:01:08,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:01:08,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-29 05:01:08,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:08,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:08,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:01:08,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:01:08,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-29 05:01:08,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:08,703 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 184 proven. 35 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-10-29 05:01:08,704 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2042802266] [2020-10-29 05:01:08,704 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:01:08,704 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 05:01:08,704 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760771274] [2020-10-29 05:01:08,705 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 05:01:08,705 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:01:08,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 05:01:08,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-10-29 05:01:08,706 INFO L87 Difference]: Start difference. First operand 122220 states and 173965 transitions. Second operand 11 states. [2020-10-29 05:01:09,232 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-29 05:01:09,476 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-29 05:01:10,277 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 05:01:10,893 WARN L193 SmtUtils]: Spent 461.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 162 [2020-10-29 05:01:11,871 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:01:12,800 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-29 05:01:16,253 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-29 05:01:39,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:01:39,594 INFO L93 Difference]: Finished difference Result 469141 states and 875564 transitions. [2020-10-29 05:01:39,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-29 05:01:39,595 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 295 [2020-10-29 05:01:39,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:01:44,991 INFO L225 Difference]: With dead ends: 469141 [2020-10-29 05:01:44,991 INFO L226 Difference]: Without dead ends: 347987 [2020-10-29 05:01:45,350 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 382 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=324, Invalid=1158, Unknown=0, NotChecked=0, Total=1482 [2020-10-29 05:01:45,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347987 states.