/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/loop-new/count_by_k.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 09:45:22,149 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 09:45:22,153 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 09:45:22,212 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 09:45:22,213 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 09:45:22,221 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 09:45:22,224 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 09:45:22,228 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 09:45:22,232 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 09:45:22,239 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 09:45:22,241 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 09:45:22,242 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 09:45:22,243 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 09:45:22,246 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 09:45:22,248 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 09:45:22,250 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 09:45:22,251 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 09:45:22,255 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 09:45:22,264 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 09:45:22,270 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 09:45:22,272 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 09:45:22,276 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 09:45:22,278 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 09:45:22,279 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 09:45:22,296 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 09:45:22,297 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 09:45:22,297 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 09:45:22,299 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 09:45:22,300 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 09:45:22,301 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 09:45:22,302 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 09:45:22,303 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 09:45:22,305 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 09:45:22,305 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 09:45:22,306 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 09:45:22,307 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 09:45:22,307 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 09:45:22,307 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 09:45:22,308 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 09:45:22,309 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 09:45:22,309 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 09:45:22,311 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 09:45:22,359 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 09:45:22,360 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 09:45:22,365 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 09:45:22,365 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 09:45:22,365 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 09:45:22,365 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 09:45:22,366 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 09:45:22,366 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 09:45:22,366 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 09:45:22,366 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 09:45:22,367 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 09:45:22,368 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 09:45:22,368 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 09:45:22,368 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 09:45:22,368 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 09:45:22,368 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 09:45:22,369 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 09:45:22,369 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 09:45:22,369 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 09:45:22,369 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 09:45:22,369 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 09:45:22,369 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 09:45:22,370 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 09:45:22,370 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 09:45:22,370 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 09:45:22,370 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 09:45:22,371 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 09:45:22,371 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 09:45:22,371 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 09:45:22,371 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 09:45:22,750 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 09:45:22,777 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 09:45:22,780 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 09:45:22,782 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 09:45:22,782 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 09:45:22,783 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-new/count_by_k.i [2020-10-29 09:45:22,867 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d14c8396e/e740bf3747054a4ca35afeee6280aa33/FLAGfdc78cd11 [2020-10-29 09:45:23,451 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 09:45:23,452 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-new/count_by_k.i [2020-10-29 09:45:23,459 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d14c8396e/e740bf3747054a4ca35afeee6280aa33/FLAGfdc78cd11 [2020-10-29 09:45:23,829 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d14c8396e/e740bf3747054a4ca35afeee6280aa33 [2020-10-29 09:45:23,832 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 09:45:23,840 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 09:45:23,845 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 09:45:23,845 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 09:45:23,850 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 09:45:23,851 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:45:23" (1/1) ... [2020-10-29 09:45:23,855 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ae8570d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:45:23, skipping insertion in model container [2020-10-29 09:45:23,855 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:45:23" (1/1) ... [2020-10-29 09:45:23,865 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 09:45:23,888 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 09:45:24,091 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:45:24,103 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 09:45:24,125 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:45:24,144 INFO L208 MainTranslator]: Completed translation [2020-10-29 09:45:24,145 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:45:24 WrapperNode [2020-10-29 09:45:24,145 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 09:45:24,146 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 09:45:24,146 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 09:45:24,147 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 09:45:24,161 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:45:24" (1/1) ... [2020-10-29 09:45:24,161 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:45:24" (1/1) ... [2020-10-29 09:45:24,169 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:45:24" (1/1) ... [2020-10-29 09:45:24,170 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:45:24" (1/1) ... [2020-10-29 09:45:24,176 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:45:24" (1/1) ... [2020-10-29 09:45:24,181 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:45:24" (1/1) ... [2020-10-29 09:45:24,183 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:45:24" (1/1) ... [2020-10-29 09:45:24,185 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 09:45:24,186 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 09:45:24,186 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 09:45:24,186 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 09:45:24,187 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:45:24" (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 09:45:24,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 09:45:24,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 09:45:24,276 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 09:45:24,276 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 09:45:24,276 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-29 09:45:24,276 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 09:45:24,276 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 09:45:24,277 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 09:45:24,277 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-29 09:45:24,277 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-29 09:45:24,277 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 09:45:24,277 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 09:45:24,278 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 09:45:24,278 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-29 09:45:24,278 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 09:45:24,278 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 09:45:24,279 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 09:45:24,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 09:45:24,279 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 09:45:24,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 09:45:24,279 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 09:45:24,279 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 09:45:24,594 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 09:45:24,595 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 09:45:24,596 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:45:24 BoogieIcfgContainer [2020-10-29 09:45:24,597 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 09:45:24,600 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 09:45:24,600 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 09:45:24,604 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 09:45:24,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 09:45:23" (1/3) ... [2020-10-29 09:45:24,606 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4942328c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:45:24, skipping insertion in model container [2020-10-29 09:45:24,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:45:24" (2/3) ... [2020-10-29 09:45:24,607 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4942328c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:45:24, skipping insertion in model container [2020-10-29 09:45:24,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:45:24" (3/3) ... [2020-10-29 09:45:24,609 INFO L111 eAbstractionObserver]: Analyzing ICFG count_by_k.i [2020-10-29 09:45:24,624 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 09:45:24,639 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 09:45:24,654 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 09:45:24,686 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 09:45:24,686 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 09:45:24,687 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 09:45:24,687 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 09:45:24,687 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 09:45:24,687 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 09:45:24,687 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 09:45:24,688 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 09:45:24,720 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2020-10-29 09:45:24,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-29 09:45:24,730 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:45:24,731 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:45:24,732 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:45:24,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:45:24,750 INFO L82 PathProgramCache]: Analyzing trace with hash 1673345896, now seen corresponding path program 1 times [2020-10-29 09:45:24,764 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:45:24,765 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1308484031] [2020-10-29 09:45:24,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:45:24,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:45:25,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:45:25,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:45:25,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-29 09:45:25,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:45:25,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-29 09:45:25,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:45:25,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:45:25,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:45:25,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 09:45:25,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:45:25,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 09:45:25,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:45:25,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:45:25,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:45:25,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:45:25,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:45:25,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:45:25,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 09:45:25,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:45:25,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:45:25,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:45:25,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:45:25,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:45:25,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:45:25,251 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 09:45:25,252 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1308484031] [2020-10-29 09:45:25,254 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:45:25,254 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 09:45:25,255 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110810577] [2020-10-29 09:45:25,261 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-29 09:45:25,261 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:45:25,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-29 09:45:25,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-29 09:45:25,281 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 3 states. [2020-10-29 09:45:25,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:45:25,373 INFO L93 Difference]: Finished difference Result 40 states and 47 transitions. [2020-10-29 09:45:25,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-29 09:45:25,376 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-10-29 09:45:25,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:45:25,384 INFO L225 Difference]: With dead ends: 40 [2020-10-29 09:45:25,385 INFO L226 Difference]: Without dead ends: 16 [2020-10-29 09:45:25,389 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-29 09:45:25,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-10-29 09:45:25,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-10-29 09:45:25,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-10-29 09:45:25,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2020-10-29 09:45:25,436 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 14 [2020-10-29 09:45:25,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:45:25,436 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2020-10-29 09:45:25,437 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-29 09:45:25,437 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2020-10-29 09:45:25,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-29 09:45:25,438 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:45:25,438 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:45:25,439 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 09:45:25,439 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:45:25,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:45:25,440 INFO L82 PathProgramCache]: Analyzing trace with hash 643291106, now seen corresponding path program 1 times [2020-10-29 09:45:25,440 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:45:25,441 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1391203908] [2020-10-29 09:45:25,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:45:25,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:45:25,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:45:25,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:45:25,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-29 09:45:25,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:45:25,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 246 [2020-10-29 09:45:25,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:45:25,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:45:25,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 09:45:25,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 09:45:25,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 09:45:25,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:45:25,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:45:25,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:45:25,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:45:25,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:45:25,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:45:25,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:45:25,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 09:45:25,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:45:25,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:45:25,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:45:25,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:45:25,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:45:25,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:45:25,864 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 09:45:25,864 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1391203908] [2020-10-29 09:45:25,865 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:45:25,865 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-29 09:45:25,865 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617213209] [2020-10-29 09:45:25,867 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 09:45:25,867 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:45:25,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 09:45:25,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-29 09:45:25,869 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 7 states. [2020-10-29 09:45:26,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:45:26,058 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2020-10-29 09:45:26,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 09:45:26,059 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2020-10-29 09:45:26,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:45:26,060 INFO L225 Difference]: With dead ends: 24 [2020-10-29 09:45:26,060 INFO L226 Difference]: Without dead ends: 17 [2020-10-29 09:45:26,061 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2020-10-29 09:45:26,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-10-29 09:45:26,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-10-29 09:45:26,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-10-29 09:45:26,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2020-10-29 09:45:26,069 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 14 [2020-10-29 09:45:26,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:45:26,070 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2020-10-29 09:45:26,070 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 09:45:26,070 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2020-10-29 09:45:26,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-29 09:45:26,071 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:45:26,071 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:45:26,071 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 09:45:26,072 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:45:26,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:45:26,074 INFO L82 PathProgramCache]: Analyzing trace with hash -2122930880, now seen corresponding path program 1 times [2020-10-29 09:45:26,075 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:45:26,075 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [912670740] [2020-10-29 09:45:26,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:45:26,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:45:26,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:45:26,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:45:26,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:45:26,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-29 09:45:26,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:45:26,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 290 [2020-10-29 09:45:26,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:45:26,394 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:45:26,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:45:26,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 09:45:26,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 09:45:26,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:45:26,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:45:26,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:45:26,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:45:26,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:45:26,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:45:26,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:45:26,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 09:45:26,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:45:26,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:45:26,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:45:26,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:45:26,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:45:26,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:45:26,526 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:45:26,527 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [912670740] [2020-10-29 09:45:26,527 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:45:26,527 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 09:45:26,527 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602538905] [2020-10-29 09:45:26,528 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 09:45:26,528 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:45:26,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 09:45:26,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-29 09:45:26,530 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 8 states. [2020-10-29 09:45:26,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:45:26,747 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2020-10-29 09:45:26,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 09:45:26,748 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 16 [2020-10-29 09:45:26,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:45:26,749 INFO L225 Difference]: With dead ends: 26 [2020-10-29 09:45:26,749 INFO L226 Difference]: Without dead ends: 19 [2020-10-29 09:45:26,750 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2020-10-29 09:45:26,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-10-29 09:45:26,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-10-29 09:45:26,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-10-29 09:45:26,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2020-10-29 09:45:26,756 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 16 [2020-10-29 09:45:26,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:45:26,757 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2020-10-29 09:45:26,757 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 09:45:26,757 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2020-10-29 09:45:26,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-29 09:45:26,758 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:45:26,758 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:45:26,758 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 09:45:26,758 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:45:26,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:45:26,759 INFO L82 PathProgramCache]: Analyzing trace with hash -1877503202, now seen corresponding path program 2 times [2020-10-29 09:45:26,759 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:45:26,760 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [710823530] [2020-10-29 09:45:26,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:45:26,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:45:26,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:45:26,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:45:26,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:45:27,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:45:27,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-29 09:45:27,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 09:45:27,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 235 [2020-10-29 09:45:27,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:45:27,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:45:27,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:45:27,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 09:45:27,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 09:45:27,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:45:27,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:45:27,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:45:27,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:45:27,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:45:27,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:45:27,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:45:27,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:45:27,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:45:27,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:45:27,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:45:27,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:45:27,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:45:27,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:45:27,128 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:45:27,129 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [710823530] [2020-10-29 09:45:27,129 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:45:27,129 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 09:45:27,130 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960644478] [2020-10-29 09:45:27,130 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 09:45:27,130 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:45:27,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 09:45:27,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-29 09:45:27,132 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 9 states. [2020-10-29 09:45:27,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:45:27,438 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2020-10-29 09:45:27,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 09:45:27,438 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 18 [2020-10-29 09:45:27,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:45:27,439 INFO L225 Difference]: With dead ends: 28 [2020-10-29 09:45:27,440 INFO L226 Difference]: Without dead ends: 21 [2020-10-29 09:45:27,440 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2020-10-29 09:45:27,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-10-29 09:45:27,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-10-29 09:45:27,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-10-29 09:45:27,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2020-10-29 09:45:27,447 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 18 [2020-10-29 09:45:27,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:45:27,447 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2020-10-29 09:45:27,447 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 09:45:27,448 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2020-10-29 09:45:27,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-29 09:45:27,448 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:45:27,449 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:45:27,449 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 09:45:27,449 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:45:27,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:45:27,450 INFO L82 PathProgramCache]: Analyzing trace with hash 2050261372, now seen corresponding path program 3 times [2020-10-29 09:45:27,450 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:45:27,450 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [614013663] [2020-10-29 09:45:27,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:45:27,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:45:27,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:45:27,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:45:27,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:45:27,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:45:27,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:45:27,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 09:45:27,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 09:45:27,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 397 [2020-10-29 09:45:27,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:45:27,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:45:27,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 09:45:27,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 09:45:27,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 09:45:27,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:45:28,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:45:28,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:45:28,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:45:28,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:45:28,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:45:28,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:45:28,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 09:45:28,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:45:28,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:45:28,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:45:28,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:45:28,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:45:28,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:45:28,018 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:45:28,019 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [614013663] [2020-10-29 09:45:28,019 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:45:28,019 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 09:45:28,019 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188266545] [2020-10-29 09:45:28,020 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 09:45:28,020 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:45:28,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 09:45:28,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-29 09:45:28,021 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 10 states. [2020-10-29 09:45:28,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:45:28,546 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2020-10-29 09:45:28,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 09:45:28,547 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 20 [2020-10-29 09:45:28,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:45:28,548 INFO L225 Difference]: With dead ends: 30 [2020-10-29 09:45:28,548 INFO L226 Difference]: Without dead ends: 23 [2020-10-29 09:45:28,549 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2020-10-29 09:45:28,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-10-29 09:45:28,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-10-29 09:45:28,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-10-29 09:45:28,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2020-10-29 09:45:28,556 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 20 [2020-10-29 09:45:28,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:45:28,556 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2020-10-29 09:45:28,556 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 09:45:28,556 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2020-10-29 09:45:28,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-29 09:45:28,557 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:45:28,557 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:45:28,558 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 09:45:28,558 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:45:28,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:45:28,558 INFO L82 PathProgramCache]: Analyzing trace with hash 1355763802, now seen corresponding path program 4 times [2020-10-29 09:45:28,558 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:45:28,559 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1663365303] [2020-10-29 09:45:28,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:45:28,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:45:28,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:45:28,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:45:28,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:45:28,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:45:28,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:45:28,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:45:28,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-29 09:45:28,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 09:45:28,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 397 [2020-10-29 09:45:28,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:45:28,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:45:28,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 09:45:28,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 09:45:28,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-29 09:45:28,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:45:29,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:45:29,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:45:29,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:45:29,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:45:29,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:45:29,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:45:29,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:45:29,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:45:29,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:45:29,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:45:29,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:45:29,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:45:29,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 09:45:29,146 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:45:29,147 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1663365303] [2020-10-29 09:45:29,148 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:45:29,148 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 09:45:29,149 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923200466] [2020-10-29 09:45:29,149 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 09:45:29,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:45:29,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 09:45:29,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-10-29 09:45:29,151 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 11 states. [2020-10-29 09:45:29,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:45:29,639 INFO L93 Difference]: Finished difference Result 32 states and 32 transitions. [2020-10-29 09:45:29,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 09:45:29,640 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 22 [2020-10-29 09:45:29,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:45:29,641 INFO L225 Difference]: With dead ends: 32 [2020-10-29 09:45:29,642 INFO L226 Difference]: Without dead ends: 25 [2020-10-29 09:45:29,642 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2020-10-29 09:45:29,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-10-29 09:45:29,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-10-29 09:45:29,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-10-29 09:45:29,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2020-10-29 09:45:29,649 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 22 [2020-10-29 09:45:29,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:45:29,649 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2020-10-29 09:45:29,649 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 09:45:29,649 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2020-10-29 09:45:29,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-29 09:45:29,650 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:45:29,650 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:45:29,650 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 09:45:29,651 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:45:29,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:45:29,651 INFO L82 PathProgramCache]: Analyzing trace with hash -336470088, now seen corresponding path program 5 times [2020-10-29 09:45:29,651 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:45:29,652 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [255207161] [2020-10-29 09:45:29,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:45:29,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:45:29,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:45:29,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:45:29,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:45:29,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:45:29,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:45:29,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:45:30,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:45:30,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-29 09:45:30,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 09:45:30,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 461 [2020-10-29 09:45:30,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:45:30,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:45:30,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 09:45:30,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 09:45:30,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 09:45:30,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:45:30,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:45:30,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:45:30,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:45:30,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:45:30,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:45:30,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:45:30,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:45:30,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:45:30,236 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:45:30,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:45:30,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:45:30,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:45:30,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:45:30,240 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:45:30,241 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [255207161] [2020-10-29 09:45:30,241 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:45:30,241 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 09:45:30,241 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713771210] [2020-10-29 09:45:30,242 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 09:45:30,242 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:45:30,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 09:45:30,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-29 09:45:30,243 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 10 states. [2020-10-29 09:45:30,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:45:30,822 INFO L93 Difference]: Finished difference Result 36 states and 37 transitions. [2020-10-29 09:45:30,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 09:45:30,822 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 24 [2020-10-29 09:45:30,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:45:30,823 INFO L225 Difference]: With dead ends: 36 [2020-10-29 09:45:30,823 INFO L226 Difference]: Without dead ends: 29 [2020-10-29 09:45:30,825 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=96, Invalid=210, Unknown=0, NotChecked=0, Total=306 [2020-10-29 09:45:30,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-29 09:45:30,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-10-29 09:45:30,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-29 09:45:30,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2020-10-29 09:45:30,838 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 24 [2020-10-29 09:45:30,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:45:30,838 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2020-10-29 09:45:30,838 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 09:45:30,839 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2020-10-29 09:45:30,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-29 09:45:30,839 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:45:30,839 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:45:30,840 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 09:45:30,840 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:45:30,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:45:30,842 INFO L82 PathProgramCache]: Analyzing trace with hash 1730002932, now seen corresponding path program 6 times [2020-10-29 09:45:30,842 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:45:30,843 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [303553007] [2020-10-29 09:45:30,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:45:30,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:45:30,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:45:30,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:45:30,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:45:30,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:45:30,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:45:31,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:45:31,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:45:31,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:45:32,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:45:32,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-29 09:45:32,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 09:45:32,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1448 [2020-10-29 09:45:32,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:45:32,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:45:32,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 09:45:32,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 09:45:32,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 09:45:32,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:45:32,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:45:32,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:45:32,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:45:32,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:45:32,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:45:32,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:45:32,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:45:32,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:45:32,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:45:32,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:45:32,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:45:32,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:45:32,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:45:32,480 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:45:32,480 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [303553007] [2020-10-29 09:45:32,480 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:45:32,481 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 09:45:32,481 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56708455] [2020-10-29 09:45:32,481 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 09:45:32,481 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:45:32,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 09:45:32,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-10-29 09:45:32,482 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 12 states. [2020-10-29 09:45:33,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:45:33,328 INFO L93 Difference]: Finished difference Result 40 states and 41 transitions. [2020-10-29 09:45:33,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 09:45:33,329 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 28 [2020-10-29 09:45:33,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:45:33,330 INFO L225 Difference]: With dead ends: 40 [2020-10-29 09:45:33,331 INFO L226 Difference]: Without dead ends: 33 [2020-10-29 09:45:33,331 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=138, Invalid=324, Unknown=0, NotChecked=0, Total=462 [2020-10-29 09:45:33,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-29 09:45:33,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-10-29 09:45:33,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-29 09:45:33,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2020-10-29 09:45:33,340 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 28 [2020-10-29 09:45:33,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:45:33,341 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2020-10-29 09:45:33,341 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 09:45:33,341 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2020-10-29 09:45:33,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-29 09:45:33,342 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:45:33,342 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:45:33,342 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 09:45:33,342 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:45:33,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:45:33,343 INFO L82 PathProgramCache]: Analyzing trace with hash -1398332880, now seen corresponding path program 7 times [2020-10-29 09:45:33,343 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:45:33,343 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [601291916] [2020-10-29 09:45:33,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:45:33,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:45:33,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:45:33,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:45:33,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:45:33,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:45:33,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:45:33,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:45:33,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:45:33,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:45:33,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:45:33,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:45:34,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:45:34,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-29 09:45:34,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-29 09:45:34,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1168 [2020-10-29 09:45:34,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:45:34,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:45:34,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 09:45:34,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 09:45:34,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 09:45:34,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:45:34,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:45:34,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:45:34,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:45:34,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:45:34,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:45:34,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:45:34,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 09:45:34,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:45:34,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:45:34,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:45:34,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:45:34,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:45:34,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:45:34,752 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:45:34,752 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [601291916] [2020-10-29 09:45:34,752 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:45:34,752 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 09:45:34,754 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484434818] [2020-10-29 09:45:34,754 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 09:45:34,758 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:45:34,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 09:45:34,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-10-29 09:45:34,760 INFO L87 Difference]: Start difference. First operand 33 states and 33 transitions. Second operand 14 states. [2020-10-29 09:45:35,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:45:35,754 INFO L93 Difference]: Finished difference Result 44 states and 45 transitions. [2020-10-29 09:45:35,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 09:45:35,754 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 32 [2020-10-29 09:45:35,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:45:35,755 INFO L225 Difference]: With dead ends: 44 [2020-10-29 09:45:35,755 INFO L226 Difference]: Without dead ends: 37 [2020-10-29 09:45:35,758 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=187, Invalid=463, Unknown=0, NotChecked=0, Total=650 [2020-10-29 09:45:35,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-10-29 09:45:35,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-10-29 09:45:35,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-29 09:45:35,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2020-10-29 09:45:35,773 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 32 [2020-10-29 09:45:35,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:45:35,773 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2020-10-29 09:45:35,773 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 09:45:35,774 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2020-10-29 09:45:35,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-29 09:45:35,774 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:45:35,775 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:45:35,775 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 09:45:35,775 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:45:35,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:45:35,775 INFO L82 PathProgramCache]: Analyzing trace with hash 1845298796, now seen corresponding path program 8 times [2020-10-29 09:45:35,776 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:45:35,777 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1038639644] [2020-10-29 09:45:35,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:45:35,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:45:35,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:45:35,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:45:35,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:45:35,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:45:35,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:45:35,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:45:35,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:45:35,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:45:35,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:45:36,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:45:36,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:45:36,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:45:37,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:45:37,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-29 09:45:37,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 09:45:37,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1608 [2020-10-29 09:45:37,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:45:37,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:45:37,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 09:45:37,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 09:45:37,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 09:45:37,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:45:37,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:45:37,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:45:37,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:45:37,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:45:37,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:45:37,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:45:37,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 09:45:37,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:45:37,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:45:37,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:45:37,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:45:37,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:45:37,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:45:37,667 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:45:37,668 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1038639644] [2020-10-29 09:45:37,668 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:45:37,669 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 09:45:37,669 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499752463] [2020-10-29 09:45:37,669 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 09:45:37,670 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:45:37,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 09:45:37,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2020-10-29 09:45:37,671 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand 16 states. [2020-10-29 09:45:38,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:45:38,906 INFO L93 Difference]: Finished difference Result 48 states and 49 transitions. [2020-10-29 09:45:38,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 09:45:38,907 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 36 [2020-10-29 09:45:38,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:45:38,908 INFO L225 Difference]: With dead ends: 48 [2020-10-29 09:45:38,908 INFO L226 Difference]: Without dead ends: 41 [2020-10-29 09:45:38,909 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=247, Invalid=623, Unknown=0, NotChecked=0, Total=870 [2020-10-29 09:45:38,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-29 09:45:38,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-10-29 09:45:38,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-29 09:45:38,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2020-10-29 09:45:38,925 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 36 [2020-10-29 09:45:38,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:45:38,926 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2020-10-29 09:45:38,926 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 09:45:38,928 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2020-10-29 09:45:38,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-29 09:45:38,930 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:45:38,930 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:45:38,930 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 09:45:38,930 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:45:38,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:45:38,931 INFO L82 PathProgramCache]: Analyzing trace with hash 219049128, now seen corresponding path program 9 times [2020-10-29 09:45:38,931 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:45:38,933 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [799209011] [2020-10-29 09:45:38,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:45:38,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:45:38,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:45:39,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:45:39,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:45:39,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:45:39,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:45:39,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:45:39,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:45:39,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:45:39,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:45:39,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:45:39,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:45:39,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:45:39,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:45:40,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:45:42,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:45:42,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 09:45:42,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-29 09:45:42,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3106 [2020-10-29 09:45:42,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:45:42,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:45:42,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 09:45:42,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 09:45:42,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 09:45:42,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:45:42,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:45:42,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:45:42,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:45:42,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:45:42,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:45:42,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:45:42,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:45:42,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:45:42,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:45:42,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:45:42,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:45:42,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:45:42,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:45:42,542 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:45:42,542 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [799209011] [2020-10-29 09:45:42,542 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:45:42,542 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-29 09:45:42,543 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455220329] [2020-10-29 09:45:42,544 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-29 09:45:42,544 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:45:42,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-29 09:45:42,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2020-10-29 09:45:42,545 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand 18 states. [2020-10-29 09:45:43,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:45:43,365 INFO L93 Difference]: Finished difference Result 51 states and 51 transitions. [2020-10-29 09:45:43,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 09:45:43,365 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 40 [2020-10-29 09:45:43,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:45:43,366 INFO L225 Difference]: With dead ends: 51 [2020-10-29 09:45:43,366 INFO L226 Difference]: Without dead ends: 44 [2020-10-29 09:45:43,367 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=345, Invalid=711, Unknown=0, NotChecked=0, Total=1056 [2020-10-29 09:45:43,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-29 09:45:43,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2020-10-29 09:45:43,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-29 09:45:43,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2020-10-29 09:45:43,381 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 40 [2020-10-29 09:45:43,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:45:43,381 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2020-10-29 09:45:43,381 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-29 09:45:43,381 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2020-10-29 09:45:43,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-29 09:45:43,384 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:45:43,384 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:45:43,385 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 09:45:43,385 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:45:43,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:45:43,385 INFO L82 PathProgramCache]: Analyzing trace with hash -1797578618, now seen corresponding path program 10 times [2020-10-29 09:45:43,386 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:45:43,386 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [208581363] [2020-10-29 09:45:43,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:45:43,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:45:43,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:45:43,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:45:43,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:45:43,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:45:43,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:45:43,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:45:43,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:45:43,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:45:43,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:45:43,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:45:43,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:45:43,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:45:43,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:45:43,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:45:44,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:45:46,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:45:46,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-29 09:45:46,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-29 09:45:46,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3353 [2020-10-29 09:45:46,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:45:46,755 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:45:46,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 09:45:46,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 09:45:46,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-29 09:45:46,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:45:47,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:45:47,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:45:47,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:45:47,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:45:47,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:45:47,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:45:47,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 09:45:47,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:45:47,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:45:47,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:45:47,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:45:47,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:45:47,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:45:47,064 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:45:47,065 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [208581363] [2020-10-29 09:45:47,065 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:45:47,065 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-29 09:45:47,065 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52766851] [2020-10-29 09:45:47,066 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-29 09:45:47,067 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:45:47,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-29 09:45:47,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2020-10-29 09:45:47,068 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand 19 states. [2020-10-29 09:45:48,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:45:48,801 INFO L93 Difference]: Finished difference Result 54 states and 55 transitions. [2020-10-29 09:45:48,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-29 09:45:48,801 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 42 [2020-10-29 09:45:48,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:45:48,803 INFO L225 Difference]: With dead ends: 54 [2020-10-29 09:45:48,803 INFO L226 Difference]: Without dead ends: 47 [2020-10-29 09:45:48,804 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=353, Invalid=907, Unknown=0, NotChecked=0, Total=1260 [2020-10-29 09:45:48,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-29 09:45:48,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-10-29 09:45:48,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-29 09:45:48,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2020-10-29 09:45:48,813 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 42 [2020-10-29 09:45:48,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:45:48,813 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2020-10-29 09:45:48,813 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-29 09:45:48,813 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2020-10-29 09:45:48,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-29 09:45:48,814 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:45:48,814 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:45:48,815 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 09:45:48,815 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:45:48,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:45:48,815 INFO L82 PathProgramCache]: Analyzing trace with hash 79555010, now seen corresponding path program 11 times [2020-10-29 09:45:48,815 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:45:48,816 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1880551898] [2020-10-29 09:45:48,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:45:48,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:45:48,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:45:48,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:45:48,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:45:49,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:45:49,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:45:49,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:45:49,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:45:49,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:45:49,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:45:49,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:45:49,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:45:49,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:45:49,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:45:49,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:45:49,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:45:49,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:45:49,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:45:51,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:45:51,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-29 09:45:51,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-29 09:45:51,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2779 [2020-10-29 09:45:51,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:45:51,610 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:45:51,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 09:45:51,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 09:45:51,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-29 09:45:51,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:45:51,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:45:51,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:45:51,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:45:51,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:45:51,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:45:51,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:45:51,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 09:45:51,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:45:51,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:45:51,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:45:51,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:45:51,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:45:51,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:45:51,996 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 0 proven. 256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:45:51,997 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1880551898] [2020-10-29 09:45:51,997 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:45:51,997 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-29 09:45:51,997 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655846930] [2020-10-29 09:45:51,998 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-29 09:45:51,998 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:45:51,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-29 09:45:51,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=381, Unknown=0, NotChecked=0, Total=420 [2020-10-29 09:45:52,000 INFO L87 Difference]: Start difference. First operand 47 states and 47 transitions. Second operand 21 states. [2020-10-29 09:45:52,450 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 35 [2020-10-29 09:45:54,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:45:54,075 INFO L93 Difference]: Finished difference Result 58 states and 59 transitions. [2020-10-29 09:45:54,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-29 09:45:54,076 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 46 [2020-10-29 09:45:54,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:45:54,077 INFO L225 Difference]: With dead ends: 58 [2020-10-29 09:45:54,077 INFO L226 Difference]: Without dead ends: 51 [2020-10-29 09:45:54,079 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=431, Invalid=1129, Unknown=0, NotChecked=0, Total=1560 [2020-10-29 09:45:54,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-29 09:45:54,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2020-10-29 09:45:54,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-29 09:45:54,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2020-10-29 09:45:54,098 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 46 [2020-10-29 09:45:54,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:45:54,099 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2020-10-29 09:45:54,100 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-29 09:45:54,100 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2020-10-29 09:45:54,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-29 09:45:54,103 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:45:54,103 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:45:54,103 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 09:45:54,103 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:45:54,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:45:54,109 INFO L82 PathProgramCache]: Analyzing trace with hash -949897986, now seen corresponding path program 12 times [2020-10-29 09:45:54,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:45:54,110 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1665842569] [2020-10-29 09:45:54,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:45:54,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:45:54,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:45:54,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:45:54,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:45:54,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:45:54,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:45:54,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:45:54,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:45:54,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:45:54,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:45:54,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:45:54,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:45:54,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:45:54,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:45:54,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:45:54,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:45:54,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:45:54,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:45:54,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:45:55,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:45:56,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:45:56,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-29 09:45:56,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-29 09:45:56,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2747 [2020-10-29 09:45:56,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:45:56,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:45:56,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-29 09:45:56,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 09:45:56,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 09:45:56,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:45:57,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:45:57,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:45:57,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:45:57,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:45:57,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:45:57,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:45:57,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:45:57,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:45:57,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:45:57,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:45:57,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:45:57,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:45:57,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:45:57,379 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 0 proven. 324 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:45:57,379 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1665842569] [2020-10-29 09:45:57,379 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:45:57,379 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-29 09:45:57,380 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139599753] [2020-10-29 09:45:57,380 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-29 09:45:57,380 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:45:57,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-29 09:45:57,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=463, Unknown=0, NotChecked=0, Total=506 [2020-10-29 09:45:57,381 INFO L87 Difference]: Start difference. First operand 51 states and 51 transitions. Second operand 23 states. [2020-10-29 09:45:57,614 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 34 [2020-10-29 09:45:57,731 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 35 [2020-10-29 09:45:59,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:45:59,753 INFO L93 Difference]: Finished difference Result 62 states and 63 transitions. [2020-10-29 09:45:59,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-29 09:45:59,754 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 50 [2020-10-29 09:45:59,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:45:59,755 INFO L225 Difference]: With dead ends: 62 [2020-10-29 09:45:59,755 INFO L226 Difference]: Without dead ends: 55 [2020-10-29 09:45:59,757 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=508, Invalid=1384, Unknown=0, NotChecked=0, Total=1892 [2020-10-29 09:45:59,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-29 09:45:59,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-10-29 09:45:59,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-29 09:45:59,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 55 transitions. [2020-10-29 09:45:59,773 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 55 transitions. Word has length 50 [2020-10-29 09:45:59,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:45:59,774 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 55 transitions. [2020-10-29 09:45:59,775 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-29 09:45:59,775 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 55 transitions. [2020-10-29 09:45:59,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-29 09:45:59,776 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:45:59,776 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:45:59,776 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 09:45:59,776 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:45:59,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:45:59,777 INFO L82 PathProgramCache]: Analyzing trace with hash -1334476230, now seen corresponding path program 13 times [2020-10-29 09:45:59,777 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:45:59,778 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [417723530] [2020-10-29 09:45:59,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:45:59,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:45:59,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:00,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:00,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:00,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:00,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:00,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:00,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:00,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:00,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:00,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:00,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:00,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:00,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:00,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:00,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:00,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:00,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:00,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:00,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:00,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:00,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:02,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:46:02,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-29 09:46:02,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 21 [2020-10-29 09:46:02,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2495 [2020-10-29 09:46:02,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:46:02,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:46:02,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-29 09:46:02,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 09:46:02,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-29 09:46:02,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:46:02,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:46:02,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:46:02,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:02,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:46:02,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:46:02,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:46:02,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:46:02,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:46:02,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:46:02,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:46:02,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:46:02,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:46:02,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:46:02,865 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 0 proven. 400 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:46:02,866 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [417723530] [2020-10-29 09:46:02,866 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:46:02,866 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-29 09:46:02,866 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308275346] [2020-10-29 09:46:02,866 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-29 09:46:02,866 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:46:02,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-29 09:46:02,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=553, Unknown=0, NotChecked=0, Total=600 [2020-10-29 09:46:02,867 INFO L87 Difference]: Start difference. First operand 55 states and 55 transitions. Second operand 25 states. [2020-10-29 09:46:03,153 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 34 [2020-10-29 09:46:03,285 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 33 [2020-10-29 09:46:03,415 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 35 [2020-10-29 09:46:05,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:46:05,670 INFO L93 Difference]: Finished difference Result 66 states and 67 transitions. [2020-10-29 09:46:05,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-29 09:46:05,670 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 54 [2020-10-29 09:46:05,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:46:05,671 INFO L225 Difference]: With dead ends: 66 [2020-10-29 09:46:05,671 INFO L226 Difference]: Without dead ends: 59 [2020-10-29 09:46:05,673 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=605, Invalid=1651, Unknown=0, NotChecked=0, Total=2256 [2020-10-29 09:46:05,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-29 09:46:05,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2020-10-29 09:46:05,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-29 09:46:05,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 59 transitions. [2020-10-29 09:46:05,683 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 59 transitions. Word has length 54 [2020-10-29 09:46:05,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:46:05,683 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 59 transitions. [2020-10-29 09:46:05,683 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-29 09:46:05,683 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 59 transitions. [2020-10-29 09:46:05,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-29 09:46:05,684 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:46:05,684 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:46:05,684 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 09:46:05,684 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:46:05,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:46:05,685 INFO L82 PathProgramCache]: Analyzing trace with hash 606622070, now seen corresponding path program 14 times [2020-10-29 09:46:05,685 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:46:05,685 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [116975263] [2020-10-29 09:46:05,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:46:05,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:46:05,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:05,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:05,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:05,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:05,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:05,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:06,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:06,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:06,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:06,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:06,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:06,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:06,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:06,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:06,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:06,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:06,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:06,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:06,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:06,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:06,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:06,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:07,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:09,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:46:09,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-29 09:46:09,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 23 [2020-10-29 09:46:09,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4254 [2020-10-29 09:46:09,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:46:09,955 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:46:09,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-29 09:46:09,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 09:46:09,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-29 09:46:09,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:46:10,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:46:10,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:46:10,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:10,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:46:10,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:46:10,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:46:10,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:46:10,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:46:10,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:46:10,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:46:10,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:46:10,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:46:10,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:46:10,617 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:46:10,617 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [116975263] [2020-10-29 09:46:10,617 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:46:10,617 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-29 09:46:10,618 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432797185] [2020-10-29 09:46:10,618 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-29 09:46:10,618 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:46:10,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-29 09:46:10,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=651, Unknown=0, NotChecked=0, Total=702 [2020-10-29 09:46:10,619 INFO L87 Difference]: Start difference. First operand 59 states and 59 transitions. Second operand 27 states. [2020-10-29 09:46:10,889 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 34 [2020-10-29 09:46:11,015 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 33 [2020-10-29 09:46:11,148 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 35 [2020-10-29 09:46:11,276 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 35 [2020-10-29 09:46:11,424 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 35 [2020-10-29 09:46:11,558 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 35 [2020-10-29 09:46:13,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:46:13,888 INFO L93 Difference]: Finished difference Result 70 states and 71 transitions. [2020-10-29 09:46:13,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-29 09:46:13,889 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 58 [2020-10-29 09:46:13,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:46:13,890 INFO L225 Difference]: With dead ends: 70 [2020-10-29 09:46:13,890 INFO L226 Difference]: Without dead ends: 63 [2020-10-29 09:46:13,892 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 299 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=706, Invalid=1946, Unknown=0, NotChecked=0, Total=2652 [2020-10-29 09:46:13,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-10-29 09:46:13,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2020-10-29 09:46:13,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-29 09:46:13,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 63 transitions. [2020-10-29 09:46:13,901 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 63 transitions. Word has length 58 [2020-10-29 09:46:13,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:46:13,901 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 63 transitions. [2020-10-29 09:46:13,901 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-29 09:46:13,901 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 63 transitions. [2020-10-29 09:46:13,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-29 09:46:13,902 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:46:13,902 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:46:13,902 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 09:46:13,902 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:46:13,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:46:13,903 INFO L82 PathProgramCache]: Analyzing trace with hash -685169998, now seen corresponding path program 15 times [2020-10-29 09:46:13,903 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:46:13,903 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [477979710] [2020-10-29 09:46:13,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:46:13,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:46:13,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:14,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:14,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:14,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:14,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:14,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:14,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:14,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:14,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:14,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:14,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:14,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:14,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:14,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:14,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:14,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:14,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:14,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:14,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:14,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:14,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:14,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:14,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:14,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:15,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:17,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:46:17,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 09:46:17,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 25 [2020-10-29 09:46:17,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3673 [2020-10-29 09:46:17,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:46:17,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:46:17,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-29 09:46:17,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 09:46:17,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-29 09:46:17,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:46:18,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:46:18,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:46:18,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:18,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:46:18,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:46:18,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:46:18,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:46:18,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:46:18,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:46:18,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:46:18,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:46:18,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:46:18,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:46:18,389 INFO L134 CoverageAnalysis]: Checked inductivity of 576 backedges. 0 proven. 576 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:46:18,389 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [477979710] [2020-10-29 09:46:18,389 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:46:18,389 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-29 09:46:18,390 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593321313] [2020-10-29 09:46:18,392 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-29 09:46:18,392 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:46:18,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-29 09:46:18,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=757, Unknown=0, NotChecked=0, Total=812 [2020-10-29 09:46:18,398 INFO L87 Difference]: Start difference. First operand 63 states and 63 transitions. Second operand 29 states. [2020-10-29 09:46:18,722 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 34 [2020-10-29 09:46:18,868 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 33 [2020-10-29 09:46:19,013 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 35 [2020-10-29 09:46:19,151 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 35 [2020-10-29 09:46:19,416 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 35 [2020-10-29 09:46:22,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:46:22,114 INFO L93 Difference]: Finished difference Result 74 states and 75 transitions. [2020-10-29 09:46:22,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-29 09:46:22,115 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 62 [2020-10-29 09:46:22,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:46:22,116 INFO L225 Difference]: With dead ends: 74 [2020-10-29 09:46:22,116 INFO L226 Difference]: Without dead ends: 67 [2020-10-29 09:46:22,118 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=833, Invalid=2247, Unknown=0, NotChecked=0, Total=3080 [2020-10-29 09:46:22,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-10-29 09:46:22,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2020-10-29 09:46:22,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-29 09:46:22,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 67 transitions. [2020-10-29 09:46:22,127 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 67 transitions. Word has length 62 [2020-10-29 09:46:22,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:46:22,127 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 67 transitions. [2020-10-29 09:46:22,127 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-29 09:46:22,127 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 67 transitions. [2020-10-29 09:46:22,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-29 09:46:22,128 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:46:22,128 INFO L422 BasicCegarLoop]: trace histogram [26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:46:22,128 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-29 09:46:22,129 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:46:22,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:46:22,129 INFO L82 PathProgramCache]: Analyzing trace with hash -1901660690, now seen corresponding path program 16 times [2020-10-29 09:46:22,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:46:22,130 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [582216389] [2020-10-29 09:46:22,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:46:22,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:46:22,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:22,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:22,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:22,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:22,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:22,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:22,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:22,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:22,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:22,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:22,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:22,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:22,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:22,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:22,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:22,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:22,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:22,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:22,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:22,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:22,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:22,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:22,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:22,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:22,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:22,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:23,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:25,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:46:25,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 09:46:25,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 27 [2020-10-29 09:46:25,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3811 [2020-10-29 09:46:25,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:46:25,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:46:25,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-29 09:46:25,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 09:46:25,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-29 09:46:25,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:46:27,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:46:27,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:46:27,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:27,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:46:27,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:46:27,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:46:27,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:46:27,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:46:27,055 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:46:27,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:46:27,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:46:27,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:46:27,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:46:27,073 INFO L134 CoverageAnalysis]: Checked inductivity of 676 backedges. 0 proven. 676 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:46:27,073 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [582216389] [2020-10-29 09:46:27,073 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:46:27,073 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-29 09:46:27,074 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751392660] [2020-10-29 09:46:27,074 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-29 09:46:27,074 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:46:27,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-29 09:46:27,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=251, Invalid=679, Unknown=0, NotChecked=0, Total=930 [2020-10-29 09:46:27,075 INFO L87 Difference]: Start difference. First operand 67 states and 67 transitions. Second operand 31 states. [2020-10-29 09:46:29,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:46:29,302 INFO L93 Difference]: Finished difference Result 77 states and 77 transitions. [2020-10-29 09:46:29,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-29 09:46:29,302 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 66 [2020-10-29 09:46:29,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:46:29,303 INFO L225 Difference]: With dead ends: 77 [2020-10-29 09:46:29,304 INFO L226 Difference]: Without dead ends: 70 [2020-10-29 09:46:29,306 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 606 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1087, Invalid=2335, Unknown=0, NotChecked=0, Total=3422 [2020-10-29 09:46:29,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-29 09:46:29,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 69. [2020-10-29 09:46:29,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-29 09:46:29,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 69 transitions. [2020-10-29 09:46:29,314 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 69 transitions. Word has length 66 [2020-10-29 09:46:29,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:46:29,314 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 69 transitions. [2020-10-29 09:46:29,315 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-29 09:46:29,315 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 69 transitions. [2020-10-29 09:46:29,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-29 09:46:29,315 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:46:29,315 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:46:29,316 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-29 09:46:29,316 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:46:29,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:46:29,316 INFO L82 PathProgramCache]: Analyzing trace with hash 309751884, now seen corresponding path program 17 times [2020-10-29 09:46:29,316 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:46:29,317 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1390091083] [2020-10-29 09:46:29,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:46:29,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:46:29,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:29,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:29,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:29,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:29,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:29,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:29,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:29,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:29,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:29,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:29,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:29,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:29,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:29,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:29,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:29,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:29,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:30,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:30,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:30,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:30,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:30,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:30,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:30,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:30,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:30,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:30,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:31,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:34,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:46:34,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-29 09:46:34,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 28 [2020-10-29 09:46:34,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 09:46:34,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:46:34,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:46:34,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-29 09:46:34,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 09:46:34,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-29 09:46:34,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:46:35,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:46:35,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:46:35,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:35,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:46:35,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:46:35,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:46:35,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:46:35,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:46:35,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:46:35,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:46:35,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:46:35,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:46:35,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:46:35,387 INFO L134 CoverageAnalysis]: Checked inductivity of 729 backedges. 0 proven. 729 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:46:35,389 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1390091083] [2020-10-29 09:46:35,390 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:46:35,390 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-29 09:46:35,390 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177323014] [2020-10-29 09:46:35,392 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-29 09:46:35,392 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:46:35,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-29 09:46:35,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=931, Unknown=0, NotChecked=0, Total=992 [2020-10-29 09:46:35,393 INFO L87 Difference]: Start difference. First operand 69 states and 69 transitions. Second operand 32 states. [2020-10-29 09:46:35,723 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 34 [2020-10-29 09:46:35,873 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 33 [2020-10-29 09:46:36,021 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 35 [2020-10-29 09:46:36,176 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 35 [2020-10-29 09:46:36,323 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 35 [2020-10-29 09:46:36,470 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 35 [2020-10-29 09:46:36,618 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 35 [2020-10-29 09:46:36,764 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 35 [2020-10-29 09:46:36,913 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 35 [2020-10-29 09:46:37,062 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 35 [2020-10-29 09:46:37,228 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 35 [2020-10-29 09:46:37,393 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 35 [2020-10-29 09:46:39,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:46:39,843 INFO L93 Difference]: Finished difference Result 80 states and 81 transitions. [2020-10-29 09:46:39,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-29 09:46:39,844 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 68 [2020-10-29 09:46:39,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:46:39,845 INFO L225 Difference]: With dead ends: 80 [2020-10-29 09:46:39,845 INFO L226 Difference]: Without dead ends: 73 [2020-10-29 09:46:39,847 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 434 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=1012, Invalid=2770, Unknown=0, NotChecked=0, Total=3782 [2020-10-29 09:46:39,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-10-29 09:46:39,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2020-10-29 09:46:39,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-29 09:46:39,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 73 transitions. [2020-10-29 09:46:39,856 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 73 transitions. Word has length 68 [2020-10-29 09:46:39,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:46:39,857 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 73 transitions. [2020-10-29 09:46:39,857 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-29 09:46:39,857 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 73 transitions. [2020-10-29 09:46:39,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-29 09:46:39,857 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:46:39,858 INFO L422 BasicCegarLoop]: trace histogram [29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:46:39,858 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-29 09:46:39,858 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:46:39,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:46:39,858 INFO L82 PathProgramCache]: Analyzing trace with hash -1593842040, now seen corresponding path program 18 times [2020-10-29 09:46:39,859 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:46:39,859 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [166319451] [2020-10-29 09:46:39,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:46:39,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:46:39,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:40,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:40,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:40,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:40,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:40,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:40,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:40,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:40,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:40,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:40,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:40,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:40,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:40,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:40,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:40,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:40,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:40,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:40,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:40,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:40,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:40,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:40,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:40,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:40,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:40,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:40,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:40,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:40,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:41,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:44,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:46:44,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-29 09:46:44,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 30 [2020-10-29 09:46:44,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 09:46:44,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:46:44,881 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:46:44,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-29 09:46:44,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 09:46:44,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-29 09:46:44,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:46:45,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:46:45,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:46:45,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:45,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:46:45,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:46:45,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:46:45,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:46:45,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:46:45,831 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:46:45,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:46:45,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:46:45,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:46:45,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:46:45,842 INFO L134 CoverageAnalysis]: Checked inductivity of 841 backedges. 0 proven. 841 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:46:45,843 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [166319451] [2020-10-29 09:46:45,843 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:46:45,843 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-29 09:46:45,843 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734523424] [2020-10-29 09:46:45,843 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-29 09:46:45,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:46:45,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-29 09:46:45,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=1057, Unknown=0, NotChecked=0, Total=1122 [2020-10-29 09:46:45,845 INFO L87 Difference]: Start difference. First operand 73 states and 73 transitions. Second operand 34 states. [2020-10-29 09:46:46,196 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 34 [2020-10-29 09:46:46,360 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 33 [2020-10-29 09:46:46,533 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 35 [2020-10-29 09:46:46,707 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 35 [2020-10-29 09:46:46,857 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 35 [2020-10-29 09:46:47,021 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 35 [2020-10-29 09:46:47,193 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 35 [2020-10-29 09:46:47,358 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 35 [2020-10-29 09:46:47,526 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 35 [2020-10-29 09:46:47,697 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 35 [2020-10-29 09:46:47,875 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 35 [2020-10-29 09:46:48,047 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 35 [2020-10-29 09:46:48,217 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 35 [2020-10-29 09:46:50,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:46:50,907 INFO L93 Difference]: Finished difference Result 84 states and 85 transitions. [2020-10-29 09:46:50,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-29 09:46:50,907 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 72 [2020-10-29 09:46:50,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:46:50,909 INFO L225 Difference]: With dead ends: 84 [2020-10-29 09:46:50,909 INFO L226 Difference]: Without dead ends: 77 [2020-10-29 09:46:50,911 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 495 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=1137, Invalid=3153, Unknown=0, NotChecked=0, Total=4290 [2020-10-29 09:46:50,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-10-29 09:46:50,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2020-10-29 09:46:50,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-29 09:46:50,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 77 transitions. [2020-10-29 09:46:50,920 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 77 transitions. Word has length 72 [2020-10-29 09:46:50,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:46:50,920 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 77 transitions. [2020-10-29 09:46:50,920 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-29 09:46:50,920 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 77 transitions. [2020-10-29 09:46:50,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-29 09:46:50,921 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:46:50,921 INFO L422 BasicCegarLoop]: trace histogram [31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:46:50,921 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-29 09:46:50,921 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:46:50,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:46:50,922 INFO L82 PathProgramCache]: Analyzing trace with hash 1160502980, now seen corresponding path program 19 times [2020-10-29 09:46:50,922 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:46:50,922 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [677941453] [2020-10-29 09:46:50,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:46:50,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:46:50,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:51,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:51,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:51,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:51,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:51,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:51,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:51,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:51,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:51,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:51,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:51,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:51,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:51,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:51,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:51,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:51,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:51,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:51,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:51,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:51,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:51,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:51,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:51,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:51,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:51,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:51,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:52,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:52,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:52,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:52,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:55,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:46:55,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-29 09:46:55,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 31 [2020-10-29 09:46:55,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 09:46:55,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:46:55,947 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:46:55,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-29 09:46:55,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 09:46:55,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-29 09:46:55,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:46:57,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:46:57,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:46:57,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:57,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:46:57,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:46:57,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:46:57,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:46:57,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:46:57,123 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:46:57,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:46:57,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:46:57,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:46:57,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:46:57,134 INFO L134 CoverageAnalysis]: Checked inductivity of 961 backedges. 0 proven. 961 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:46:57,134 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [677941453] [2020-10-29 09:46:57,134 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:46:57,134 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-10-29 09:46:57,134 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505286477] [2020-10-29 09:46:57,135 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-10-29 09:46:57,135 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:46:57,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-10-29 09:46:57,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=1191, Unknown=0, NotChecked=0, Total=1260 [2020-10-29 09:46:57,136 INFO L87 Difference]: Start difference. First operand 77 states and 77 transitions. Second operand 36 states. [2020-10-29 09:46:57,563 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 34 [2020-10-29 09:46:57,760 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 33 [2020-10-29 09:46:57,946 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 35 [2020-10-29 09:46:58,116 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 35 [2020-10-29 09:46:58,288 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 35 [2020-10-29 09:46:58,464 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 35 [2020-10-29 09:46:58,641 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 35 [2020-10-29 09:46:58,807 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 35 [2020-10-29 09:46:58,978 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 35 [2020-10-29 09:46:59,150 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 35 [2020-10-29 09:46:59,318 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 35 [2020-10-29 09:46:59,492 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 35 [2020-10-29 09:46:59,653 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 35 [2020-10-29 09:47:02,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:47:02,888 INFO L93 Difference]: Finished difference Result 88 states and 89 transitions. [2020-10-29 09:47:02,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-29 09:47:02,889 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 76 [2020-10-29 09:47:02,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:47:02,890 INFO L225 Difference]: With dead ends: 88 [2020-10-29 09:47:02,890 INFO L226 Difference]: Without dead ends: 81 [2020-10-29 09:47:02,893 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 560 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=1272, Invalid=3558, Unknown=0, NotChecked=0, Total=4830 [2020-10-29 09:47:02,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-10-29 09:47:02,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2020-10-29 09:47:02,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-29 09:47:02,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 81 transitions. [2020-10-29 09:47:02,900 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 81 transitions. Word has length 76 [2020-10-29 09:47:02,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:47:02,900 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 81 transitions. [2020-10-29 09:47:02,901 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-10-29 09:47:02,901 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 81 transitions. [2020-10-29 09:47:02,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-29 09:47:02,901 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:47:02,901 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:47:02,902 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-29 09:47:02,902 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:47:02,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:47:02,902 INFO L82 PathProgramCache]: Analyzing trace with hash -2048304896, now seen corresponding path program 20 times [2020-10-29 09:47:02,902 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:47:02,903 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1124856676] [2020-10-29 09:47:02,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:47:02,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:47:02,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:03,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:03,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:03,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:03,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:03,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:03,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:03,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:03,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:03,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:03,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:03,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:03,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:03,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:03,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:03,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:03,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:03,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:03,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:03,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:03,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:03,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:03,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:03,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:03,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:03,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:03,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:03,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:04,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:04,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:04,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:04,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:04,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:05,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:07,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:47:07,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-29 09:47:07,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 34 [2020-10-29 09:47:07,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-29 09:47:07,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:47:07,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:47:07,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-29 09:47:07,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 09:47:07,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-29 09:47:07,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:47:09,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:47:09,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:47:09,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:09,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:47:09,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:47:09,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:47:09,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:47:09,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:47:09,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:47:09,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:47:09,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:47:09,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:47:09,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:47:09,131 INFO L134 CoverageAnalysis]: Checked inductivity of 1089 backedges. 0 proven. 1089 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:47:09,131 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1124856676] [2020-10-29 09:47:09,131 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:47:09,131 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2020-10-29 09:47:09,132 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147417018] [2020-10-29 09:47:09,132 INFO L461 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-10-29 09:47:09,132 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:47:09,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-10-29 09:47:09,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=1333, Unknown=0, NotChecked=0, Total=1406 [2020-10-29 09:47:09,134 INFO L87 Difference]: Start difference. First operand 81 states and 81 transitions. Second operand 38 states. [2020-10-29 09:47:09,524 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 34 [2020-10-29 09:47:09,713 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 33 [2020-10-29 09:47:09,892 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 35 [2020-10-29 09:47:10,072 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 35 [2020-10-29 09:47:10,254 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 35 [2020-10-29 09:47:10,428 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 35 [2020-10-29 09:47:10,611 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 35 [2020-10-29 09:47:10,794 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 35 [2020-10-29 09:47:10,973 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 35 [2020-10-29 09:47:11,150 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 35 [2020-10-29 09:47:11,329 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 35 [2020-10-29 09:47:11,508 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 35 [2020-10-29 09:47:11,689 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 35 [2020-10-29 09:47:11,863 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 35 [2020-10-29 09:47:12,039 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 35 [2020-10-29 09:47:15,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:47:15,456 INFO L93 Difference]: Finished difference Result 92 states and 93 transitions. [2020-10-29 09:47:15,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-29 09:47:15,458 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 80 [2020-10-29 09:47:15,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:47:15,459 INFO L225 Difference]: With dead ends: 92 [2020-10-29 09:47:15,459 INFO L226 Difference]: Without dead ends: 85 [2020-10-29 09:47:15,462 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 629 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=1413, Invalid=3989, Unknown=0, NotChecked=0, Total=5402 [2020-10-29 09:47:15,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-10-29 09:47:15,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2020-10-29 09:47:15,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-29 09:47:15,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 85 transitions. [2020-10-29 09:47:15,471 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 85 transitions. Word has length 80 [2020-10-29 09:47:15,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:47:15,472 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 85 transitions. [2020-10-29 09:47:15,472 INFO L482 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-10-29 09:47:15,472 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 85 transitions. [2020-10-29 09:47:15,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-29 09:47:15,473 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:47:15,473 INFO L422 BasicCegarLoop]: trace histogram [35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:47:15,473 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-29 09:47:15,473 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:47:15,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:47:15,473 INFO L82 PathProgramCache]: Analyzing trace with hash -626567876, now seen corresponding path program 21 times [2020-10-29 09:47:15,474 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:47:15,474 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1681774090] [2020-10-29 09:47:15,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:47:15,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:47:15,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:15,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:15,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:15,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:15,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:15,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:15,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:15,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:15,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:15,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:15,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:15,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:16,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:16,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:16,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:16,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:16,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:16,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:16,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:16,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:16,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:16,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:16,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:16,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:16,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:16,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:16,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:16,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:16,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:16,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:16,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:16,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:16,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:16,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:16,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:17,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:20,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:47:20,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-29 09:47:20,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 36 [2020-10-29 09:47:20,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 09:47:20,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:47:20,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:47:20,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-10-29 09:47:20,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 09:47:20,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-29 09:47:20,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:47:21,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:47:21,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:47:21,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:21,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:47:21,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:47:21,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:47:21,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:47:21,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:47:21,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:47:21,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:47:21,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:47:21,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:47:21,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:47:21,936 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:47:21,937 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1681774090] [2020-10-29 09:47:21,937 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:47:21,937 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2020-10-29 09:47:21,937 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993803692] [2020-10-29 09:47:21,937 INFO L461 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-10-29 09:47:21,937 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:47:21,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-10-29 09:47:21,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=1483, Unknown=0, NotChecked=0, Total=1560 [2020-10-29 09:47:21,939 INFO L87 Difference]: Start difference. First operand 85 states and 85 transitions. Second operand 40 states. [2020-10-29 09:47:22,204 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 32 [2020-10-29 09:47:22,399 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 34 [2020-10-29 09:47:22,610 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 33 [2020-10-29 09:47:22,801 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 35 [2020-10-29 09:47:22,993 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 35 [2020-10-29 09:47:23,189 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 35 [2020-10-29 09:47:23,381 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 35 [2020-10-29 09:47:23,575 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 35 [2020-10-29 09:47:23,774 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 35 [2020-10-29 09:47:23,960 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 35 [2020-10-29 09:47:24,169 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 35 [2020-10-29 09:47:24,367 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 35 [2020-10-29 09:47:24,569 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 35 [2020-10-29 09:47:24,759 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 35 [2020-10-29 09:47:24,951 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 35 [2020-10-29 09:47:25,148 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 35 [2020-10-29 09:47:25,335 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 35 [2020-10-29 09:47:25,526 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 35 [2020-10-29 09:47:25,714 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 35 [2020-10-29 09:47:25,906 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 35 [2020-10-29 09:47:26,480 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 35 [2020-10-29 09:47:29,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:47:29,140 INFO L93 Difference]: Finished difference Result 96 states and 97 transitions. [2020-10-29 09:47:29,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-29 09:47:29,141 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 84 [2020-10-29 09:47:29,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:47:29,142 INFO L225 Difference]: With dead ends: 96 [2020-10-29 09:47:29,142 INFO L226 Difference]: Without dead ends: 89 [2020-10-29 09:47:29,145 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 702 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=1591, Invalid=4415, Unknown=0, NotChecked=0, Total=6006 [2020-10-29 09:47:29,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-10-29 09:47:29,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2020-10-29 09:47:29,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-29 09:47:29,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 89 transitions. [2020-10-29 09:47:29,153 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 89 transitions. Word has length 84 [2020-10-29 09:47:29,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:47:29,153 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 89 transitions. [2020-10-29 09:47:29,153 INFO L482 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-10-29 09:47:29,153 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 89 transitions. [2020-10-29 09:47:29,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-29 09:47:29,154 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:47:29,154 INFO L422 BasicCegarLoop]: trace histogram [37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:47:29,154 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-29 09:47:29,154 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:47:29,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:47:29,155 INFO L82 PathProgramCache]: Analyzing trace with hash 1800721272, now seen corresponding path program 22 times [2020-10-29 09:47:29,155 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:47:29,155 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1856408371] [2020-10-29 09:47:29,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:47:29,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:47:29,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:29,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:29,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:29,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:29,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:29,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:29,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:29,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:29,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:29,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:29,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:29,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:29,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:29,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:29,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:29,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:30,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:30,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:30,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:30,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:30,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:30,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:30,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:30,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:30,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:30,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:30,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:30,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:30,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:30,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:30,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:30,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:31,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:31,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:31,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:32,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:32,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:34,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:47:34,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-29 09:47:34,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 37 [2020-10-29 09:47:34,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 09:47:34,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:47:34,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:47:34,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 40 [2020-10-29 09:47:34,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 09:47:34,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 09:47:34,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:47:36,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:47:36,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:47:36,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:36,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:47:36,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:47:36,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:47:36,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 09:47:36,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:47:36,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:47:36,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:47:36,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:47:36,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:47:36,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:47:36,376 INFO L134 CoverageAnalysis]: Checked inductivity of 1369 backedges. 0 proven. 1369 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:47:36,376 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1856408371] [2020-10-29 09:47:36,376 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:47:36,376 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2020-10-29 09:47:36,376 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550172236] [2020-10-29 09:47:36,377 INFO L461 AbstractCegarLoop]: Interpolant automaton has 42 states [2020-10-29 09:47:36,377 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:47:36,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2020-10-29 09:47:36,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=553, Invalid=1169, Unknown=0, NotChecked=0, Total=1722 [2020-10-29 09:47:36,378 INFO L87 Difference]: Start difference. First operand 89 states and 89 transitions. Second operand 42 states. [2020-10-29 09:47:39,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:47:39,939 INFO L93 Difference]: Finished difference Result 99 states and 99 transitions. [2020-10-29 09:47:39,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-10-29 09:47:39,940 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 88 [2020-10-29 09:47:39,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:47:39,941 INFO L225 Difference]: With dead ends: 99 [2020-10-29 09:47:39,941 INFO L226 Difference]: Without dead ends: 92 [2020-10-29 09:47:39,944 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1076 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=2133, Invalid=4347, Unknown=0, NotChecked=0, Total=6480 [2020-10-29 09:47:39,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-29 09:47:39,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 91. [2020-10-29 09:47:39,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-29 09:47:39,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 91 transitions. [2020-10-29 09:47:39,953 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 91 transitions. Word has length 88 [2020-10-29 09:47:39,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:47:39,953 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 91 transitions. [2020-10-29 09:47:39,953 INFO L482 AbstractCegarLoop]: Interpolant automaton has 42 states. [2020-10-29 09:47:39,953 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 91 transitions. [2020-10-29 09:47:39,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-29 09:47:39,954 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:47:39,954 INFO L422 BasicCegarLoop]: trace histogram [38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:47:39,954 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-29 09:47:39,955 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:47:39,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:47:39,955 INFO L82 PathProgramCache]: Analyzing trace with hash 2065896278, now seen corresponding path program 23 times [2020-10-29 09:47:39,955 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:47:39,955 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [18465570] [2020-10-29 09:47:39,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:47:39,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:47:40,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:40,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:40,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:40,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:40,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:40,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:40,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:40,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:40,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:40,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:40,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:40,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:40,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:40,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:40,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:40,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:40,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:40,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:40,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:40,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:40,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:40,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:40,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:40,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:41,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:41,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:41,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:41,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:41,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:41,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:41,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:41,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:42,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:42,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:42,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:42,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:42,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:42,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:43,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:44,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:47:44,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-29 09:47:44,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 39 [2020-10-29 09:47:44,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 09:47:44,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:47:44,986 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:47:44,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 41 [2020-10-29 09:47:44,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 09:47:44,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-29 09:47:44,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:47:47,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:47:47,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:47:47,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:47,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:47:47,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:47:47,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:47:47,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 09:47:47,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:47:47,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:47:47,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:47:47,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:47:47,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:47:47,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:47:47,208 INFO L134 CoverageAnalysis]: Checked inductivity of 1444 backedges. 0 proven. 1444 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:47:47,208 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [18465570] [2020-10-29 09:47:47,208 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:47:47,209 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2020-10-29 09:47:47,209 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202153111] [2020-10-29 09:47:47,209 INFO L461 AbstractCegarLoop]: Interpolant automaton has 43 states [2020-10-29 09:47:47,209 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:47:47,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2020-10-29 09:47:47,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=585, Invalid=1221, Unknown=0, NotChecked=0, Total=1806 [2020-10-29 09:47:47,210 INFO L87 Difference]: Start difference. First operand 91 states and 91 transitions. Second operand 43 states. [2020-10-29 09:47:51,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:47:51,197 INFO L93 Difference]: Finished difference Result 101 states and 101 transitions. [2020-10-29 09:47:51,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-10-29 09:47:51,198 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 90 [2020-10-29 09:47:51,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:47:51,200 INFO L225 Difference]: With dead ends: 101 [2020-10-29 09:47:51,200 INFO L226 Difference]: Without dead ends: 94 [2020-10-29 09:47:51,202 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1126 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=2245, Invalid=4561, Unknown=0, NotChecked=0, Total=6806 [2020-10-29 09:47:51,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-29 09:47:51,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 93. [2020-10-29 09:47:51,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-29 09:47:51,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 93 transitions. [2020-10-29 09:47:51,218 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 93 transitions. Word has length 90 [2020-10-29 09:47:51,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:47:51,219 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 93 transitions. [2020-10-29 09:47:51,219 INFO L482 AbstractCegarLoop]: Interpolant automaton has 43 states. [2020-10-29 09:47:51,219 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 93 transitions. [2020-10-29 09:47:51,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-29 09:47:51,221 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:47:51,221 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:47:51,221 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-29 09:47:51,221 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:47:51,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:47:51,221 INFO L82 PathProgramCache]: Analyzing trace with hash -798960716, now seen corresponding path program 24 times [2020-10-29 09:47:51,222 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:47:51,222 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1919669926] [2020-10-29 09:47:51,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:47:51,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:47:51,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:51,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:51,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:51,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:52,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:52,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:52,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:52,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:52,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:52,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:52,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:52,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:52,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:52,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:52,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:52,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:52,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:52,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:52,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:52,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:52,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:52,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:52,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:52,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:53,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:53,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:53,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:53,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:54,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:54,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:54,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:54,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:55,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:55,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:55,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:55,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:56,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:56,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:47:56,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-29 09:47:56,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 37 [2020-10-29 09:47:56,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5056 [2020-10-29 09:47:56,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:47:56,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:47:56,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 42 [2020-10-29 09:47:56,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 09:47:56,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-29 09:47:56,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:47:58,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:47:58,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:47:58,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:47:58,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:47:58,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:47:58,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:47:58,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:47:58,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:47:58,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:47:58,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:47:58,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:47:58,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:47:58,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:47:58,132 INFO L134 CoverageAnalysis]: Checked inductivity of 1521 backedges. 0 proven. 1521 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:47:58,132 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1919669926] [2020-10-29 09:47:58,132 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:47:58,132 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2020-10-29 09:47:58,132 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328247313] [2020-10-29 09:47:58,133 INFO L461 AbstractCegarLoop]: Interpolant automaton has 44 states [2020-10-29 09:47:58,133 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:47:58,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2020-10-29 09:47:58,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=1807, Unknown=0, NotChecked=0, Total=1892 [2020-10-29 09:47:58,133 INFO L87 Difference]: Start difference. First operand 93 states and 93 transitions. Second operand 44 states. [2020-10-29 09:47:58,413 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 32 [2020-10-29 09:47:58,647 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 34 [2020-10-29 09:47:58,869 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 33 [2020-10-29 09:47:59,084 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 35 [2020-10-29 09:47:59,301 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 35 [2020-10-29 09:47:59,521 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 35 [2020-10-29 09:47:59,736 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 35 [2020-10-29 09:47:59,964 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 35 [2020-10-29 09:48:00,180 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 35 [2020-10-29 09:48:00,405 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 35 [2020-10-29 09:48:00,630 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 35 [2020-10-29 09:48:00,847 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 35 [2020-10-29 09:48:01,088 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 35 [2020-10-29 09:48:01,309 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 35 [2020-10-29 09:48:01,528 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 35 [2020-10-29 09:48:01,747 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 35 [2020-10-29 09:48:01,968 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 35 [2020-10-29 09:48:02,192 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 35 [2020-10-29 09:48:02,410 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 35 [2020-10-29 09:48:02,626 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 35 [2020-10-29 09:48:02,848 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 35 [2020-10-29 09:48:03,062 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 35 [2020-10-29 09:48:03,283 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 35 [2020-10-29 09:48:03,510 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 35 [2020-10-29 09:48:03,732 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 35 [2020-10-29 09:48:07,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:48:07,145 INFO L93 Difference]: Finished difference Result 104 states and 105 transitions. [2020-10-29 09:48:07,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-10-29 09:48:07,146 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 92 [2020-10-29 09:48:07,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:48:07,148 INFO L225 Difference]: With dead ends: 104 [2020-10-29 09:48:07,148 INFO L226 Difference]: Without dead ends: 97 [2020-10-29 09:48:07,149 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 860 ImplicationChecksByTransitivity, 10.1s TimeCoverageRelationStatistics Valid=1923, Invalid=5387, Unknown=0, NotChecked=0, Total=7310 [2020-10-29 09:48:07,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-10-29 09:48:07,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2020-10-29 09:48:07,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-29 09:48:07,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 97 transitions. [2020-10-29 09:48:07,159 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 97 transitions. Word has length 92 [2020-10-29 09:48:07,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:48:07,159 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 97 transitions. [2020-10-29 09:48:07,159 INFO L482 AbstractCegarLoop]: Interpolant automaton has 44 states. [2020-10-29 09:48:07,159 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 97 transitions. [2020-10-29 09:48:07,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-29 09:48:07,160 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:48:07,160 INFO L422 BasicCegarLoop]: trace histogram [41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:48:07,160 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-29 09:48:07,160 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:48:07,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:48:07,161 INFO L82 PathProgramCache]: Analyzing trace with hash -759540240, now seen corresponding path program 25 times [2020-10-29 09:48:07,161 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:48:07,161 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1030528458] [2020-10-29 09:48:07,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:48:07,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:48:07,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:07,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:07,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:07,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:07,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:07,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:07,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:07,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:07,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:07,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:07,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:07,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:08,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:08,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:08,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:08,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:08,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:08,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:08,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:08,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:08,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:08,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:08,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:08,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:08,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:08,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:08,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:08,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:08,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:09,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:09,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:09,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:09,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:09,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:09,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:09,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:09,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:09,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:09,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:09,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:09,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:10,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:12,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:48:12,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-29 09:48:12,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 42 [2020-10-29 09:48:12,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 09:48:12,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:48:12,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:48:12,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 44 [2020-10-29 09:48:12,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 09:48:12,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-29 09:48:12,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:48:14,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:48:14,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:48:14,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:14,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:48:14,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:48:14,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:48:14,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:48:14,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:48:14,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:48:14,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:48:14,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:48:14,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:48:14,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:48:14,244 INFO L134 CoverageAnalysis]: Checked inductivity of 1681 backedges. 0 proven. 1681 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:48:14,244 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1030528458] [2020-10-29 09:48:14,244 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:48:14,244 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2020-10-29 09:48:14,244 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637556200] [2020-10-29 09:48:14,245 INFO L461 AbstractCegarLoop]: Interpolant automaton has 46 states [2020-10-29 09:48:14,245 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:48:14,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2020-10-29 09:48:14,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=1981, Unknown=0, NotChecked=0, Total=2070 [2020-10-29 09:48:14,246 INFO L87 Difference]: Start difference. First operand 97 states and 97 transitions. Second operand 46 states. [2020-10-29 09:48:14,518 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 32 [2020-10-29 09:48:14,784 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 34 [2020-10-29 09:48:15,027 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 33 [2020-10-29 09:48:15,261 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 35 [2020-10-29 09:48:15,500 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 35 [2020-10-29 09:48:15,735 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 35 [2020-10-29 09:48:15,975 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 35 [2020-10-29 09:48:16,221 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 35 [2020-10-29 09:48:16,453 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 35 [2020-10-29 09:48:16,689 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 35 [2020-10-29 09:48:16,931 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 35 [2020-10-29 09:48:17,164 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 35 [2020-10-29 09:48:17,397 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 35 [2020-10-29 09:48:17,631 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 35 [2020-10-29 09:48:17,869 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 35 [2020-10-29 09:48:18,102 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 35 [2020-10-29 09:48:18,333 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 35 [2020-10-29 09:48:18,570 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 35 [2020-10-29 09:48:18,805 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 35 [2020-10-29 09:48:19,042 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 35 [2020-10-29 09:48:19,275 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 35 [2020-10-29 09:48:19,499 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 35 [2020-10-29 09:48:19,725 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 35 [2020-10-29 09:48:19,946 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 35 [2020-10-29 09:48:20,166 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 35 [2020-10-29 09:48:20,388 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 35 [2020-10-29 09:48:20,610 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 35 [2020-10-29 09:48:20,841 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 35 [2020-10-29 09:48:21,070 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 35 [2020-10-29 09:48:24,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:48:24,230 INFO L93 Difference]: Finished difference Result 108 states and 109 transitions. [2020-10-29 09:48:24,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-10-29 09:48:24,231 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 96 [2020-10-29 09:48:24,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:48:24,232 INFO L225 Difference]: With dead ends: 108 [2020-10-29 09:48:24,232 INFO L226 Difference]: Without dead ends: 101 [2020-10-29 09:48:24,233 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 945 ImplicationChecksByTransitivity, 11.3s TimeCoverageRelationStatistics Valid=2091, Invalid=5919, Unknown=0, NotChecked=0, Total=8010 [2020-10-29 09:48:24,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-10-29 09:48:24,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2020-10-29 09:48:24,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-29 09:48:24,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 101 transitions. [2020-10-29 09:48:24,244 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 101 transitions. Word has length 96 [2020-10-29 09:48:24,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:48:24,245 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 101 transitions. [2020-10-29 09:48:24,245 INFO L482 AbstractCegarLoop]: Interpolant automaton has 46 states. [2020-10-29 09:48:24,245 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 101 transitions. [2020-10-29 09:48:24,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-29 09:48:24,246 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:48:24,246 INFO L422 BasicCegarLoop]: trace histogram [43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:48:24,246 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-29 09:48:24,246 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:48:24,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:48:24,246 INFO L82 PathProgramCache]: Analyzing trace with hash 735074860, now seen corresponding path program 26 times [2020-10-29 09:48:24,247 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:48:24,247 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [546133098] [2020-10-29 09:48:24,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:48:24,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:48:24,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:24,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:25,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:25,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:25,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:25,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:25,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:25,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:25,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:25,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:25,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:25,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:25,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:25,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:25,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:25,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:25,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:25,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:25,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:25,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:25,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:25,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:25,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:25,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:25,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:25,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:25,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:25,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:25,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:25,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:25,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:25,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:25,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:25,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:25,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:25,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:25,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:25,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:26,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:26,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:26,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:26,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:26,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:26,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:27,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:48:27,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 09:48:27,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 44 [2020-10-29 09:48:27,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3453 [2020-10-29 09:48:27,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:48:27,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:48:27,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 46 [2020-10-29 09:48:27,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 09:48:27,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-29 09:48:27,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:48:30,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:48:30,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:48:30,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:30,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:48:30,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:48:30,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:48:30,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 09:48:30,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:48:30,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:48:30,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:48:30,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:48:30,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:48:30,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:48:30,693 INFO L134 CoverageAnalysis]: Checked inductivity of 1849 backedges. 0 proven. 1849 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:48:30,693 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [546133098] [2020-10-29 09:48:30,693 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:48:30,693 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2020-10-29 09:48:30,694 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848114126] [2020-10-29 09:48:30,694 INFO L461 AbstractCegarLoop]: Interpolant automaton has 48 states [2020-10-29 09:48:30,694 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:48:30,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2020-10-29 09:48:30,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=710, Invalid=1546, Unknown=0, NotChecked=0, Total=2256 [2020-10-29 09:48:30,695 INFO L87 Difference]: Start difference. First operand 101 states and 101 transitions. Second operand 48 states. [2020-10-29 09:48:35,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:48:35,587 INFO L93 Difference]: Finished difference Result 111 states and 111 transitions. [2020-10-29 09:48:35,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-10-29 09:48:35,588 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 100 [2020-10-29 09:48:35,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:48:35,589 INFO L225 Difference]: With dead ends: 111 [2020-10-29 09:48:35,589 INFO L226 Difference]: Without dead ends: 104 [2020-10-29 09:48:35,591 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1439 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=2804, Invalid=5752, Unknown=0, NotChecked=0, Total=8556 [2020-10-29 09:48:35,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-29 09:48:35,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 103. [2020-10-29 09:48:35,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-29 09:48:35,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 103 transitions. [2020-10-29 09:48:35,603 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 103 transitions. Word has length 100 [2020-10-29 09:48:35,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:48:35,603 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 103 transitions. [2020-10-29 09:48:35,603 INFO L482 AbstractCegarLoop]: Interpolant automaton has 48 states. [2020-10-29 09:48:35,603 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 103 transitions. [2020-10-29 09:48:35,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-29 09:48:35,604 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:48:35,604 INFO L422 BasicCegarLoop]: trace histogram [44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:48:35,605 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-29 09:48:35,605 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:48:35,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:48:35,605 INFO L82 PathProgramCache]: Analyzing trace with hash 181910794, now seen corresponding path program 27 times [2020-10-29 09:48:35,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:48:35,605 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2137216319] [2020-10-29 09:48:35,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:48:35,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:48:35,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:36,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:36,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:36,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:36,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:36,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:36,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:36,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:36,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:36,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:36,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:36,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:36,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:37,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:37,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:37,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:37,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:37,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:37,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:37,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:37,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:37,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:37,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:37,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:37,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:38,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:38,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:38,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:38,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:38,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:38,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:38,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:38,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:38,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:38,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:38,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:38,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:39,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:39,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:39,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:39,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:39,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:39,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:39,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:39,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:40,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:48:40,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 09:48:40,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 45 [2020-10-29 09:48:40,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 09:48:40,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:48:40,647 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:48:40,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 47 [2020-10-29 09:48:40,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 09:48:40,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-29 09:48:40,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:48:43,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:48:43,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:48:43,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:43,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:48:43,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:48:43,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:48:43,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 09:48:43,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:48:43,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:48:43,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:48:43,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:48:43,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:48:43,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:48:43,055 INFO L134 CoverageAnalysis]: Checked inductivity of 1936 backedges. 0 proven. 1936 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:48:43,055 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2137216319] [2020-10-29 09:48:43,056 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:48:43,056 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49] total 49 [2020-10-29 09:48:43,056 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019469154] [2020-10-29 09:48:43,056 INFO L461 AbstractCegarLoop]: Interpolant automaton has 49 states [2020-10-29 09:48:43,056 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:48:43,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2020-10-29 09:48:43,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=2257, Unknown=0, NotChecked=0, Total=2352 [2020-10-29 09:48:43,057 INFO L87 Difference]: Start difference. First operand 103 states and 103 transitions. Second operand 49 states. [2020-10-29 09:48:43,623 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 34 [2020-10-29 09:48:43,879 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 33 [2020-10-29 09:48:44,139 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 35 [2020-10-29 09:48:44,406 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 35 [2020-10-29 09:48:44,665 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 35 [2020-10-29 09:48:44,930 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 35 [2020-10-29 09:48:45,197 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 35 [2020-10-29 09:48:45,487 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 35 [2020-10-29 09:48:45,777 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 35 [2020-10-29 09:48:46,060 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 35 [2020-10-29 09:48:46,323 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 35 [2020-10-29 09:48:46,585 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 35 [2020-10-29 09:48:46,849 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 35 [2020-10-29 09:48:47,112 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 35 [2020-10-29 09:48:47,367 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 35 [2020-10-29 09:48:47,622 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 35 [2020-10-29 09:48:47,877 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 35 [2020-10-29 09:48:48,132 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 35 [2020-10-29 09:48:48,383 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 35 [2020-10-29 09:48:48,635 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 35 [2020-10-29 09:48:48,887 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 35 [2020-10-29 09:48:49,144 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 35 [2020-10-29 09:48:49,386 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 35 [2020-10-29 09:48:49,651 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 35 [2020-10-29 09:48:49,909 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 35 [2020-10-29 09:48:50,167 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 35 [2020-10-29 09:48:50,413 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 35 [2020-10-29 09:48:50,665 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 35 [2020-10-29 09:48:50,920 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 35 [2020-10-29 09:48:51,178 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 35 [2020-10-29 09:48:51,430 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 35 [2020-10-29 09:48:51,667 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 35 [2020-10-29 09:48:54,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:48:54,820 INFO L93 Difference]: Finished difference Result 114 states and 115 transitions. [2020-10-29 09:48:54,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-10-29 09:48:54,821 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 102 [2020-10-29 09:48:54,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:48:54,822 INFO L225 Difference]: With dead ends: 114 [2020-10-29 09:48:54,823 INFO L226 Difference]: Without dead ends: 107 [2020-10-29 09:48:54,825 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1080 ImplicationChecksByTransitivity, 13.3s TimeCoverageRelationStatistics Valid=2368, Invalid=6752, Unknown=0, NotChecked=0, Total=9120 [2020-10-29 09:48:54,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-10-29 09:48:54,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2020-10-29 09:48:54,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-29 09:48:54,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 107 transitions. [2020-10-29 09:48:54,837 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 107 transitions. Word has length 102 [2020-10-29 09:48:54,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:48:54,837 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 107 transitions. [2020-10-29 09:48:54,837 INFO L482 AbstractCegarLoop]: Interpolant automaton has 49 states. [2020-10-29 09:48:54,837 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 107 transitions. [2020-10-29 09:48:54,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-29 09:48:54,839 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:48:54,839 INFO L422 BasicCegarLoop]: trace histogram [46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:48:54,839 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-29 09:48:54,839 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:48:54,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:48:54,839 INFO L82 PathProgramCache]: Analyzing trace with hash -1169120186, now seen corresponding path program 28 times [2020-10-29 09:48:54,839 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:48:54,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1360271522] [2020-10-29 09:48:54,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:48:54,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:48:54,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:55,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:55,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:55,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:55,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:55,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:55,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:55,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:55,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:55,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:55,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:55,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:55,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:55,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:55,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:55,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:55,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:55,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:55,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:55,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:56,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:56,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:56,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:56,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:56,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:56,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:56,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:56,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:56,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:56,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:56,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:56,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:56,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:56,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:56,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:56,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:56,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:56,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:56,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:56,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:56,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:56,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:56,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:56,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:56,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:56,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:57,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:48:58,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:48:58,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-29 09:48:58,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 47 [2020-10-29 09:48:58,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3743 [2020-10-29 09:48:58,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:48:58,627 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:48:58,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 49 [2020-10-29 09:48:58,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 09:48:58,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-29 09:48:58,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:49:01,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:49:01,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:49:01,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:49:01,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:49:01,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:49:01,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:49:01,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:49:01,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:49:01,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:49:01,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:49:01,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:49:01,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:49:01,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:49:01,237 INFO L134 CoverageAnalysis]: Checked inductivity of 2116 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:49:01,237 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1360271522] [2020-10-29 09:49:01,237 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:49:01,237 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51] total 51 [2020-10-29 09:49:01,237 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007192178] [2020-10-29 09:49:01,238 INFO L461 AbstractCegarLoop]: Interpolant automaton has 51 states [2020-10-29 09:49:01,238 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:49:01,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2020-10-29 09:49:01,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=2451, Unknown=0, NotChecked=0, Total=2550 [2020-10-29 09:49:01,238 INFO L87 Difference]: Start difference. First operand 107 states and 107 transitions. Second operand 51 states. [2020-10-29 09:49:01,623 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 32 [2020-10-29 09:49:01,922 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 34 [2020-10-29 09:49:02,215 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 33 [2020-10-29 09:49:02,509 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 35 [2020-10-29 09:49:02,807 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 35 [2020-10-29 09:49:03,106 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 35 [2020-10-29 09:49:03,405 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 35 [2020-10-29 09:49:03,695 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 35 [2020-10-29 09:49:03,980 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 35 [2020-10-29 09:49:04,263 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 35 [2020-10-29 09:49:04,553 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 35 [2020-10-29 09:49:04,832 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 35 [2020-10-29 09:49:05,112 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 35 [2020-10-29 09:49:05,389 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 35 [2020-10-29 09:49:05,678 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 35 [2020-10-29 09:49:05,967 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 35 [2020-10-29 09:49:06,259 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 35 [2020-10-29 09:49:06,540 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 35 [2020-10-29 09:49:06,813 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 35 [2020-10-29 09:49:07,100 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 35 [2020-10-29 09:49:07,387 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 35 [2020-10-29 09:49:07,674 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 35 [2020-10-29 09:49:07,951 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 35 [2020-10-29 09:49:08,228 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 35 [2020-10-29 09:49:08,501 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 35 [2020-10-29 09:49:08,773 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 35 [2020-10-29 09:49:09,046 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 35 [2020-10-29 09:49:09,316 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 35 [2020-10-29 09:49:09,612 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 35 [2020-10-29 09:49:09,879 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 35 [2020-10-29 09:49:10,148 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 35 [2020-10-29 09:49:10,419 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 35 [2020-10-29 09:49:10,690 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 35 [2020-10-29 09:49:10,956 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 35 [2020-10-29 09:49:11,220 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 35 [2020-10-29 09:49:11,487 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 35