/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label36.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 13:39:52,101 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 13:39:52,105 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 13:39:52,169 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 13:39:52,170 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 13:39:52,178 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 13:39:52,181 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 13:39:52,186 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 13:39:52,190 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 13:39:52,196 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 13:39:52,198 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 13:39:52,201 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 13:39:52,202 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 13:39:52,202 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 13:39:52,207 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 13:39:52,209 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 13:39:52,213 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 13:39:52,218 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 13:39:52,223 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 13:39:52,231 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 13:39:52,233 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 13:39:52,241 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 13:39:52,243 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 13:39:52,244 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 13:39:52,248 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 13:39:52,253 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 13:39:52,253 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 13:39:52,256 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 13:39:52,257 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 13:39:52,258 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 13:39:52,259 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 13:39:52,260 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 13:39:52,263 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 13:39:52,264 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 13:39:52,266 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 13:39:52,266 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 13:39:52,267 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 13:39:52,267 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 13:39:52,267 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 13:39:52,268 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 13:39:52,269 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 13:39:52,278 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 13:39:52,340 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 13:39:52,340 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 13:39:52,347 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 13:39:52,347 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 13:39:52,347 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 13:39:52,348 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 13:39:52,348 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 13:39:52,348 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 13:39:52,348 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 13:39:52,349 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 13:39:52,350 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 13:39:52,351 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 13:39:52,351 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 13:39:52,351 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 13:39:52,351 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 13:39:52,352 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 13:39:52,352 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 13:39:52,352 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 13:39:52,352 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 13:39:52,353 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 13:39:52,353 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 13:39:52,353 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 13:39:52,354 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 13:39:52,354 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 13:39:52,354 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 13:39:52,354 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 13:39:52,354 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 13:39:52,355 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 13:39:52,355 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 13:39:52,355 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 13:39:52,846 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 13:39:52,886 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 13:39:52,890 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 13:39:52,891 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 13:39:52,892 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 13:39:52,894 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label36.c [2020-10-28 13:39:52,993 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ae5808521/9f8f794b6a414deca0b30d7bfa2bf4fc/FLAGe5674a223 [2020-10-28 13:39:54,078 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 13:39:54,079 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label36.c [2020-10-28 13:39:54,111 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ae5808521/9f8f794b6a414deca0b30d7bfa2bf4fc/FLAGe5674a223 [2020-10-28 13:39:54,557 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ae5808521/9f8f794b6a414deca0b30d7bfa2bf4fc [2020-10-28 13:39:54,561 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 13:39:54,572 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 13:39:54,577 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 13:39:54,577 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 13:39:54,583 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 13:39:54,585 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:39:54" (1/1) ... [2020-10-28 13:39:54,591 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3387b0c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:39:54, skipping insertion in model container [2020-10-28 13:39:54,592 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:39:54" (1/1) ... [2020-10-28 13:39:54,601 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 13:39:54,716 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 13:39:55,775 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:39:55,795 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 13:39:56,249 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:39:56,278 INFO L208 MainTranslator]: Completed translation [2020-10-28 13:39:56,279 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:39:56 WrapperNode [2020-10-28 13:39:56,279 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 13:39:56,281 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 13:39:56,281 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 13:39:56,282 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 13:39:56,297 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:39:56" (1/1) ... [2020-10-28 13:39:56,299 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:39:56" (1/1) ... [2020-10-28 13:39:56,384 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:39:56" (1/1) ... [2020-10-28 13:39:56,385 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:39:56" (1/1) ... [2020-10-28 13:39:56,560 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:39:56" (1/1) ... [2020-10-28 13:39:56,602 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:39:56" (1/1) ... [2020-10-28 13:39:56,643 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:39:56" (1/1) ... [2020-10-28 13:39:56,684 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 13:39:56,686 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 13:39:56,686 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 13:39:56,686 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 13:39:56,687 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:39:56" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 13:39:56,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 13:39:56,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 13:39:56,785 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 13:39:56,785 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 13:39:56,786 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 13:39:56,786 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 13:39:56,786 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 13:39:56,786 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 13:39:56,787 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 13:39:56,787 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 13:39:56,788 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 13:39:56,788 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 13:39:56,788 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 13:39:56,788 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 13:39:56,788 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 13:39:56,789 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 13:39:56,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 13:39:56,790 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 13:39:56,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 13:39:56,790 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 13:39:56,790 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 13:40:07,296 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 13:40:07,297 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 13:40:07,302 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:40:07 BoogieIcfgContainer [2020-10-28 13:40:07,302 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 13:40:07,305 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 13:40:07,305 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 13:40:07,310 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 13:40:07,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 01:39:54" (1/3) ... [2020-10-28 13:40:07,312 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28959558 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:40:07, skipping insertion in model container [2020-10-28 13:40:07,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:39:56" (2/3) ... [2020-10-28 13:40:07,313 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28959558 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:40:07, skipping insertion in model container [2020-10-28 13:40:07,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:40:07" (3/3) ... [2020-10-28 13:40:07,315 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem17_label36.c [2020-10-28 13:40:07,326 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 13:40:07,333 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 13:40:07,348 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 13:40:07,406 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 13:40:07,406 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 13:40:07,406 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 13:40:07,406 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 13:40:07,407 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 13:40:07,407 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 13:40:07,407 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 13:40:07,407 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 13:40:07,462 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states. [2020-10-28 13:40:07,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-28 13:40:07,479 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:40:07,480 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:40:07,481 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:40:07,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:40:07,493 INFO L82 PathProgramCache]: Analyzing trace with hash -1179845790, now seen corresponding path program 1 times [2020-10-28 13:40:07,508 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:40:07,508 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [906768462] [2020-10-28 13:40:07,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:40:07,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:40:07,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:40:08,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:40:08,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 13:40:08,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:40:08,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 675 [2020-10-28 13:40:08,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:40:08,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:40:08,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:40:08,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:40:08,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-28 13:40:08,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 13:40:08,795 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-28 13:40:08,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:40:08,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:40:08,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:40:08,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:40:08,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:40:08,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:40:08,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-28 13:40:08,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:40:08,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:40:08,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:40:08,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:40:08,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:40:08,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:40:08,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:40:08,872 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [906768462] [2020-10-28 13:40:08,876 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:40:08,876 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 13:40:08,877 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959181489] [2020-10-28 13:40:08,884 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 13:40:08,884 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:40:08,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 13:40:08,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 13:40:08,912 INFO L87 Difference]: Start difference. First operand 607 states. Second operand 4 states. [2020-10-28 13:40:09,133 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-28 13:40:28,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:40:28,133 INFO L93 Difference]: Finished difference Result 1697 states and 3097 transitions. [2020-10-28 13:40:28,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:40:28,136 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 64 [2020-10-28 13:40:28,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:40:28,196 INFO L225 Difference]: With dead ends: 1697 [2020-10-28 13:40:28,197 INFO L226 Difference]: Without dead ends: 1013 [2020-10-28 13:40:28,221 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:40:28,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1013 states. [2020-10-28 13:40:28,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1013 to 1003. [2020-10-28 13:40:28,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1003 states. [2020-10-28 13:40:28,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1003 states to 1003 states and 1543 transitions. [2020-10-28 13:40:28,381 INFO L78 Accepts]: Start accepts. Automaton has 1003 states and 1543 transitions. Word has length 64 [2020-10-28 13:40:28,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:40:28,382 INFO L481 AbstractCegarLoop]: Abstraction has 1003 states and 1543 transitions. [2020-10-28 13:40:28,382 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 13:40:28,382 INFO L276 IsEmpty]: Start isEmpty. Operand 1003 states and 1543 transitions. [2020-10-28 13:40:28,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-10-28 13:40:28,390 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:40:28,390 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:40:28,391 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 13:40:28,391 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:40:28,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:40:28,392 INFO L82 PathProgramCache]: Analyzing trace with hash 1332526658, now seen corresponding path program 1 times [2020-10-28 13:40:28,392 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:40:28,393 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1071912494] [2020-10-28 13:40:28,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:40:28,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:40:28,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:40:29,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:40:29,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:40:30,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:40:31,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:40:31,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-28 13:40:31,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:40:31,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3125 [2020-10-28 13:40:31,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:40:31,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:40:31,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:40:31,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:40:31,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-28 13:40:31,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 13:40:31,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:40:31,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:40:31,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:40:31,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:40:31,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:40:31,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:40:31,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 13:40:31,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:40:31,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:40:31,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:40:31,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:40:31,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:40:31,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-28 13:40:31,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:40:31,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:40:31,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:40:32,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:40:32,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-28 13:40:32,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:40:32,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-10-28 13:40:32,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:40:32,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:40:32,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:40:32,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:40:32,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-28 13:40:32,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:40:32,225 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:40:32,226 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1071912494] [2020-10-28 13:40:32,226 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:40:32,227 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 13:40:32,227 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488051276] [2020-10-28 13:40:32,231 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:40:32,232 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:40:32,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:40:32,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:40:32,236 INFO L87 Difference]: Start difference. First operand 1003 states and 1543 transitions. Second operand 7 states. [2020-10-28 13:40:49,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:40:49,177 INFO L93 Difference]: Finished difference Result 2930 states and 4534 transitions. [2020-10-28 13:40:49,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:40:49,179 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 135 [2020-10-28 13:40:49,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:40:49,193 INFO L225 Difference]: With dead ends: 2930 [2020-10-28 13:40:49,193 INFO L226 Difference]: Without dead ends: 1933 [2020-10-28 13:40:49,198 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:40:49,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1933 states. [2020-10-28 13:40:49,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1933 to 1902. [2020-10-28 13:40:49,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1902 states. [2020-10-28 13:40:49,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1902 states to 1902 states and 2466 transitions. [2020-10-28 13:40:49,312 INFO L78 Accepts]: Start accepts. Automaton has 1902 states and 2466 transitions. Word has length 135 [2020-10-28 13:40:49,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:40:49,316 INFO L481 AbstractCegarLoop]: Abstraction has 1902 states and 2466 transitions. [2020-10-28 13:40:49,316 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:40:49,316 INFO L276 IsEmpty]: Start isEmpty. Operand 1902 states and 2466 transitions. [2020-10-28 13:40:49,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-10-28 13:40:49,331 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:40:49,332 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:40:49,336 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 13:40:49,337 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:40:49,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:40:49,337 INFO L82 PathProgramCache]: Analyzing trace with hash 645369871, now seen corresponding path program 1 times [2020-10-28 13:40:49,338 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:40:49,338 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1624276944] [2020-10-28 13:40:49,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:40:49,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:40:49,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:40:49,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:40:50,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:40:54,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:40:54,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-28 13:40:54,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:40:54,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 13:40:54,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:40:54,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:40:54,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:40:54,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-28 13:40:54,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-28 13:40:54,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:40:54,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:40:54,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:40:54,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:40:54,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:40:54,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:40:54,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:40:54,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 13:40:54,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:40:54,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:40:54,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:40:54,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:40:54,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:40:54,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:40:54,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:40:54,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:40:54,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:40:54,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:40:54,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-28 13:40:54,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:40:54,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-28 13:40:54,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:40:54,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:40:54,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:40:54,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:40:54,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-28 13:40:54,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:40:54,899 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 55 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:40:54,899 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1624276944] [2020-10-28 13:40:54,900 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:40:54,900 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:40:54,900 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641371563] [2020-10-28 13:40:54,903 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:40:54,904 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:40:54,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:40:54,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:40:54,907 INFO L87 Difference]: Start difference. First operand 1902 states and 2466 transitions. Second operand 5 states. [2020-10-28 13:41:11,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:41:11,629 INFO L93 Difference]: Finished difference Result 4705 states and 6250 transitions. [2020-10-28 13:41:11,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:41:11,630 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 138 [2020-10-28 13:41:11,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:41:11,648 INFO L225 Difference]: With dead ends: 4705 [2020-10-28 13:41:11,649 INFO L226 Difference]: Without dead ends: 2363 [2020-10-28 13:41:11,656 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:41:11,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2363 states. [2020-10-28 13:41:11,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2363 to 2352. [2020-10-28 13:41:11,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2352 states. [2020-10-28 13:41:11,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2352 states to 2352 states and 2889 transitions. [2020-10-28 13:41:11,743 INFO L78 Accepts]: Start accepts. Automaton has 2352 states and 2889 transitions. Word has length 138 [2020-10-28 13:41:11,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:41:11,748 INFO L481 AbstractCegarLoop]: Abstraction has 2352 states and 2889 transitions. [2020-10-28 13:41:11,748 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:41:11,749 INFO L276 IsEmpty]: Start isEmpty. Operand 2352 states and 2889 transitions. [2020-10-28 13:41:11,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2020-10-28 13:41:11,755 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:41:11,755 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:41:11,756 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 13:41:11,756 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:41:11,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:41:11,758 INFO L82 PathProgramCache]: Analyzing trace with hash -1431634274, now seen corresponding path program 1 times [2020-10-28 13:41:11,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:41:11,759 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [611661349] [2020-10-28 13:41:11,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:41:11,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:41:11,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:41:12,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:41:12,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:41:12,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-28 13:41:12,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:41:12,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 978 [2020-10-28 13:41:12,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:41:12,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:41:12,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:41:12,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-28 13:41:12,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-28 13:41:12,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:41:12,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:41:12,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:41:12,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:41:12,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:41:12,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:41:12,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:41:12,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 13:41:12,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:41:12,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:41:12,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:41:12,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:41:12,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:41:12,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:41:12,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:41:12,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:41:12,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:41:13,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:41:13,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:41:13,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:41:13,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-28 13:41:13,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:41:13,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:41:13,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:41:13,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:41:13,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-28 13:41:13,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-28 13:41:13,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:41:13,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:41:13,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:41:13,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:41:13,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 13:41:13,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:41:13,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-10-28 13:41:13,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:41:13,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:41:13,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:41:13,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:41:13,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-28 13:41:13,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:41:13,428 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 182 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:41:13,428 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [611661349] [2020-10-28 13:41:13,429 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:41:13,429 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:41:13,429 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529543755] [2020-10-28 13:41:13,430 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:41:13,430 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:41:13,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:41:13,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:41:13,431 INFO L87 Difference]: Start difference. First operand 2352 states and 2889 transitions. Second operand 7 states. [2020-10-28 13:41:29,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:41:29,124 INFO L93 Difference]: Finished difference Result 6514 states and 8172 transitions. [2020-10-28 13:41:29,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:41:29,126 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 224 [2020-10-28 13:41:29,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:41:29,152 INFO L225 Difference]: With dead ends: 6514 [2020-10-28 13:41:29,152 INFO L226 Difference]: Without dead ends: 4168 [2020-10-28 13:41:29,161 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:41:29,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4168 states. [2020-10-28 13:41:29,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4168 to 3722. [2020-10-28 13:41:29,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3722 states. [2020-10-28 13:41:29,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3722 states to 3722 states and 4570 transitions. [2020-10-28 13:41:29,292 INFO L78 Accepts]: Start accepts. Automaton has 3722 states and 4570 transitions. Word has length 224 [2020-10-28 13:41:29,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:41:29,294 INFO L481 AbstractCegarLoop]: Abstraction has 3722 states and 4570 transitions. [2020-10-28 13:41:29,294 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:41:29,294 INFO L276 IsEmpty]: Start isEmpty. Operand 3722 states and 4570 transitions. [2020-10-28 13:41:29,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2020-10-28 13:41:29,298 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:41:29,299 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:41:29,299 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 13:41:29,299 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:41:29,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:41:29,300 INFO L82 PathProgramCache]: Analyzing trace with hash -995265734, now seen corresponding path program 1 times [2020-10-28 13:41:29,300 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:41:29,300 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [207667694] [2020-10-28 13:41:29,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:41:29,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:41:29,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:41:29,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:41:31,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:41:32,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:41:33,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:41:33,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:41:33,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:41:33,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4429 [2020-10-28 13:41:33,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:41:33,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:41:33,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:41:33,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 174 [2020-10-28 13:41:33,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-28 13:41:33,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:41:33,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:41:33,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:41:33,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:41:33,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:41:33,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:41:33,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:41:33,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 13:41:33,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:41:33,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:41:33,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:41:33,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:41:33,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:41:33,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:41:33,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:41:33,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:41:33,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:41:34,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:41:34,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:41:34,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:41:34,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-28 13:41:34,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:41:34,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:41:34,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:41:34,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:41:34,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:41:34,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:41:34,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:41:34,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:41:34,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:41:34,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:41:34,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 13:41:34,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:41:34,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-28 13:41:34,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:41:34,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:41:34,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:41:34,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:41:34,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 13:41:34,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:41:34,260 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 113 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-28 13:41:34,261 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [207667694] [2020-10-28 13:41:34,261 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:41:34,261 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:41:34,261 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555879600] [2020-10-28 13:41:34,262 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:41:34,262 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:41:34,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:41:34,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:41:34,263 INFO L87 Difference]: Start difference. First operand 3722 states and 4570 transitions. Second operand 5 states. [2020-10-28 13:41:48,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:41:48,801 INFO L93 Difference]: Finished difference Result 10517 states and 13099 transitions. [2020-10-28 13:41:48,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:41:48,806 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 226 [2020-10-28 13:41:48,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:41:48,845 INFO L225 Difference]: With dead ends: 10517 [2020-10-28 13:41:48,845 INFO L226 Difference]: Without dead ends: 6800 [2020-10-28 13:41:48,855 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:41:48,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6800 states. [2020-10-28 13:41:49,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6800 to 5930. [2020-10-28 13:41:49,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5930 states. [2020-10-28 13:41:49,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5930 states to 5930 states and 7137 transitions. [2020-10-28 13:41:49,026 INFO L78 Accepts]: Start accepts. Automaton has 5930 states and 7137 transitions. Word has length 226 [2020-10-28 13:41:49,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:41:49,028 INFO L481 AbstractCegarLoop]: Abstraction has 5930 states and 7137 transitions. [2020-10-28 13:41:49,028 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:41:49,028 INFO L276 IsEmpty]: Start isEmpty. Operand 5930 states and 7137 transitions. [2020-10-28 13:41:49,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2020-10-28 13:41:49,033 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:41:49,034 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:41:49,034 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 13:41:49,034 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:41:49,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:41:49,035 INFO L82 PathProgramCache]: Analyzing trace with hash 648045424, now seen corresponding path program 1 times [2020-10-28 13:41:49,035 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:41:49,035 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [144850342] [2020-10-28 13:41:49,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:41:49,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:41:49,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:41:49,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:41:49,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:41:54,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:41:54,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-10-28 13:41:54,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:41:54,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-28 13:41:54,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:41:54,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:41:54,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:41:54,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-28 13:41:54,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-10-28 13:41:54,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:41:54,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:41:54,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:41:54,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:41:54,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:41:54,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:41:54,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:41:54,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:41:54,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:41:54,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:41:54,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:41:54,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:41:54,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:41:54,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:41:54,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:41:54,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:41:54,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:41:54,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:41:54,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:41:54,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:41:54,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-28 13:41:54,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:41:54,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:41:54,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:41:54,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:41:54,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-28 13:41:54,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:41:54,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:41:54,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:41:54,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:41:54,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:41:54,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:41:54,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 13:41:54,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:41:54,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 247 [2020-10-28 13:41:54,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:41:54,811 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:41:54,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:41:54,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:41:54,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 13:41:54,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:41:54,904 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 110 proven. 2 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-28 13:41:54,905 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [144850342] [2020-10-28 13:41:54,906 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:41:54,906 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:41:54,907 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082361170] [2020-10-28 13:41:54,907 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:41:54,907 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:41:54,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:41:54,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:41:54,908 INFO L87 Difference]: Start difference. First operand 5930 states and 7137 transitions. Second operand 5 states. [2020-10-28 13:42:07,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:42:07,022 INFO L93 Difference]: Finished difference Result 12291 states and 15034 transitions. [2020-10-28 13:42:07,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:42:07,025 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 237 [2020-10-28 13:42:07,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:42:07,056 INFO L225 Difference]: With dead ends: 12291 [2020-10-28 13:42:07,056 INFO L226 Difference]: Without dead ends: 6367 [2020-10-28 13:42:07,070 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:42:07,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6367 states. [2020-10-28 13:42:07,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6367 to 6363. [2020-10-28 13:42:07,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6363 states. [2020-10-28 13:42:07,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6363 states to 6363 states and 7694 transitions. [2020-10-28 13:42:07,243 INFO L78 Accepts]: Start accepts. Automaton has 6363 states and 7694 transitions. Word has length 237 [2020-10-28 13:42:07,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:42:07,244 INFO L481 AbstractCegarLoop]: Abstraction has 6363 states and 7694 transitions. [2020-10-28 13:42:07,244 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:42:07,244 INFO L276 IsEmpty]: Start isEmpty. Operand 6363 states and 7694 transitions. [2020-10-28 13:42:07,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2020-10-28 13:42:07,251 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:42:07,252 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:42:07,252 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 13:42:07,253 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:42:07,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:42:07,253 INFO L82 PathProgramCache]: Analyzing trace with hash -1935000972, now seen corresponding path program 1 times [2020-10-28 13:42:07,254 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:42:07,254 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1917108959] [2020-10-28 13:42:07,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:42:07,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:42:07,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:42:07,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:42:07,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:42:09,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:42:10,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:42:12,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:42:12,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 324 [2020-10-28 13:42:12,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 13:42:12,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5070 [2020-10-28 13:42:12,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:42:12,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:42:12,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:42:12,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 185 [2020-10-28 13:42:12,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-28 13:42:12,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:42:12,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:42:12,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:42:12,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:42:12,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:42:12,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:42:12,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:42:12,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 13:42:12,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:42:12,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:42:12,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:42:12,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:42:12,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:42:12,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 13:42:12,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:42:12,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:42:12,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:42:12,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:42:12,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:42:12,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:42:12,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-28 13:42:12,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:42:12,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:42:12,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:42:12,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:42:12,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:42:12,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:42:12,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:42:12,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:42:12,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:42:12,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:42:12,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 13:42:12,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:42:12,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-28 13:42:12,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:42:12,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:42:12,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:42:12,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:42:12,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 13:42:12,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:42:12,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-28 13:42:13,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:42:13,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:42:13,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:42:13,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:42:13,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-28 13:42:13,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:42:13,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 317 [2020-10-28 13:42:13,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:42:13,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:42:13,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:42:13,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:42:13,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-28 13:42:13,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:42:13,532 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 174 proven. 3 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2020-10-28 13:42:13,533 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1917108959] [2020-10-28 13:42:13,533 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:42:13,533 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:42:13,533 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764030259] [2020-10-28 13:42:13,534 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:42:13,534 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:42:13,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:42:13,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:42:13,536 INFO L87 Difference]: Start difference. First operand 6363 states and 7694 transitions. Second operand 5 states. [2020-10-28 13:42:27,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:42:27,165 INFO L93 Difference]: Finished difference Result 15797 states and 19396 transitions. [2020-10-28 13:42:27,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:42:27,166 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 308 [2020-10-28 13:42:27,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:42:27,213 INFO L225 Difference]: With dead ends: 15797 [2020-10-28 13:42:27,213 INFO L226 Difference]: Without dead ends: 8555 [2020-10-28 13:42:27,232 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:42:27,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8555 states. [2020-10-28 13:42:27,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8555 to 8548. [2020-10-28 13:42:27,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8548 states. [2020-10-28 13:42:27,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8548 states to 8548 states and 9914 transitions. [2020-10-28 13:42:27,492 INFO L78 Accepts]: Start accepts. Automaton has 8548 states and 9914 transitions. Word has length 308 [2020-10-28 13:42:27,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:42:27,493 INFO L481 AbstractCegarLoop]: Abstraction has 8548 states and 9914 transitions. [2020-10-28 13:42:27,493 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:42:27,493 INFO L276 IsEmpty]: Start isEmpty. Operand 8548 states and 9914 transitions. [2020-10-28 13:42:27,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2020-10-28 13:42:27,503 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:42:27,503 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:42:27,504 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 13:42:27,504 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:42:27,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:42:27,505 INFO L82 PathProgramCache]: Analyzing trace with hash -807998279, now seen corresponding path program 1 times [2020-10-28 13:42:27,505 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:42:27,507 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [78552348] [2020-10-28 13:42:27,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:42:27,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:42:27,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:42:27,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:42:28,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:42:31,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:42:31,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 364 [2020-10-28 13:42:31,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:42:31,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3663 [2020-10-28 13:42:31,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:42:31,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:42:31,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:42:31,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-28 13:42:31,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-28 13:42:31,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:42:31,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:42:31,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:42:31,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:42:31,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:42:31,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:42:31,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:42:31,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:42:31,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:42:31,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:42:31,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:42:31,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:42:31,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:42:31,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:42:31,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:42:31,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:42:31,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:42:31,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:42:31,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:42:31,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:42:31,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-28 13:42:31,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:42:31,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:42:31,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:42:31,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:42:31,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-28 13:42:31,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:42:31,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:42:31,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:42:31,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:42:31,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:42:31,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 13:42:31,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:42:31,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 289 [2020-10-28 13:42:31,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:42:31,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:42:31,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:42:31,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:42:31,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-28 13:42:31,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:42:32,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-28 13:42:32,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:42:32,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:42:32,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:42:32,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-28 13:42:32,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:42:32,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-28 13:42:32,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:42:32,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:42:32,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:42:32,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-28 13:42:32,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:42:32,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:42:32,487 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 256 proven. 87 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2020-10-28 13:42:32,488 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [78552348] [2020-10-28 13:42:32,488 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:42:32,488 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:42:32,488 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481599344] [2020-10-28 13:42:32,489 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:42:32,489 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:42:32,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:42:32,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:42:32,490 INFO L87 Difference]: Start difference. First operand 8548 states and 9914 transitions. Second operand 7 states. [2020-10-28 13:42:47,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:42:47,527 INFO L93 Difference]: Finished difference Result 18515 states and 21493 transitions. [2020-10-28 13:42:47,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:42:47,530 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 348 [2020-10-28 13:42:47,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:42:47,565 INFO L225 Difference]: With dead ends: 18515 [2020-10-28 13:42:47,566 INFO L226 Difference]: Without dead ends: 9973 [2020-10-28 13:42:47,585 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:42:47,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9973 states. [2020-10-28 13:42:47,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9973 to 9961. [2020-10-28 13:42:47,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9961 states. [2020-10-28 13:42:47,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9961 states to 9961 states and 11547 transitions. [2020-10-28 13:42:47,810 INFO L78 Accepts]: Start accepts. Automaton has 9961 states and 11547 transitions. Word has length 348 [2020-10-28 13:42:47,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:42:47,811 INFO L481 AbstractCegarLoop]: Abstraction has 9961 states and 11547 transitions. [2020-10-28 13:42:47,811 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:42:47,812 INFO L276 IsEmpty]: Start isEmpty. Operand 9961 states and 11547 transitions. [2020-10-28 13:42:47,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2020-10-28 13:42:47,822 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:42:47,822 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:42:47,822 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 13:42:47,823 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:42:47,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:42:47,823 INFO L82 PathProgramCache]: Analyzing trace with hash -903104960, now seen corresponding path program 1 times [2020-10-28 13:42:47,824 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:42:47,824 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [645482261] [2020-10-28 13:42:47,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:42:47,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:42:47,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:42:48,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:42:51,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:42:52,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:42:52,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 375 [2020-10-28 13:42:52,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:42:52,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-28 13:42:52,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:42:52,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:42:52,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:42:52,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 309 [2020-10-28 13:42:52,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-28 13:42:52,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:42:53,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:42:53,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:42:53,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:42:53,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:42:53,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:42:53,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:42:53,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:42:53,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:42:53,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:42:53,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:42:53,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:42:53,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:42:53,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:42:53,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:42:53,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:42:53,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:42:53,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:42:53,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:42:53,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:42:53,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-28 13:42:53,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:42:53,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:42:53,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:42:53,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:42:53,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:42:53,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:42:53,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:42:53,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:42:53,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:42:53,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:42:53,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 211 [2020-10-28 13:42:53,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:42:53,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-28 13:42:53,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:42:53,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:42:53,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:42:53,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:42:53,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 205 [2020-10-28 13:42:53,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:42:53,672 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 113 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-28 13:42:53,674 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [645482261] [2020-10-28 13:42:53,674 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:42:53,674 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:42:53,674 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61725639] [2020-10-28 13:42:53,675 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:42:53,676 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:42:53,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:42:53,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:42:53,677 INFO L87 Difference]: Start difference. First operand 9961 states and 11547 transitions. Second operand 5 states. [2020-10-28 13:42:53,823 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-28 13:43:10,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:43:10,363 INFO L93 Difference]: Finished difference Result 23073 states and 27275 transitions. [2020-10-28 13:43:10,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:43:10,370 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 361 [2020-10-28 13:43:10,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:43:10,414 INFO L225 Difference]: With dead ends: 23073 [2020-10-28 13:43:10,415 INFO L226 Difference]: Without dead ends: 13118 [2020-10-28 13:43:10,438 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:43:10,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13118 states. [2020-10-28 13:43:10,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13118 to 12223. [2020-10-28 13:43:10,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12223 states. [2020-10-28 13:43:10,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12223 states to 12223 states and 14379 transitions. [2020-10-28 13:43:10,732 INFO L78 Accepts]: Start accepts. Automaton has 12223 states and 14379 transitions. Word has length 361 [2020-10-28 13:43:10,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:43:10,734 INFO L481 AbstractCegarLoop]: Abstraction has 12223 states and 14379 transitions. [2020-10-28 13:43:10,734 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:43:10,734 INFO L276 IsEmpty]: Start isEmpty. Operand 12223 states and 14379 transitions. [2020-10-28 13:43:10,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2020-10-28 13:43:10,746 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:43:10,747 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:43:10,747 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 13:43:10,747 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:43:10,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:43:10,748 INFO L82 PathProgramCache]: Analyzing trace with hash -670657346, now seen corresponding path program 1 times [2020-10-28 13:43:10,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:43:10,750 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [553394744] [2020-10-28 13:43:10,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:43:10,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:43:10,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:43:11,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:43:11,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:43:11,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:43:12,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:43:12,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:43:15,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:43:15,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:43:15,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:43:15,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 390 [2020-10-28 13:43:15,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 13:43:15,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5068 [2020-10-28 13:43:15,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:43:15,906 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:43:15,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:43:15,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:43:15,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 229 [2020-10-28 13:43:15,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:43:16,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:43:16,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:43:16,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:43:16,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:43:16,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:43:16,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:43:16,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 13:43:16,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:43:16,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:43:16,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:43:16,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:43:16,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:43:16,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:43:16,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:43:16,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:43:16,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:43:16,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:43:16,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:43:16,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:43:16,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-28 13:43:16,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:43:16,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:43:16,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:43:16,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:43:16,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-28 13:43:16,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:43:16,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:43:16,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:43:16,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:43:16,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:43:16,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:43:16,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-28 13:43:16,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:43:16,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 229 [2020-10-28 13:43:16,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:43:16,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:43:16,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:43:16,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 129 [2020-10-28 13:43:16,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 13:43:16,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:43:16,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-10-28 13:43:16,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:43:16,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:43:16,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:43:16,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-28 13:43:16,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:43:16,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-28 13:43:16,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:43:16,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:43:16,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:43:16,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-28 13:43:16,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:43:16,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:43:16,772 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 175 proven. 2 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2020-10-28 13:43:16,772 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [553394744] [2020-10-28 13:43:16,772 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:43:16,773 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 13:43:16,773 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022924112] [2020-10-28 13:43:16,776 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 13:43:16,776 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:43:16,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 13:43:16,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:43:16,778 INFO L87 Difference]: Start difference. First operand 12223 states and 14379 transitions. Second operand 6 states. [2020-10-28 13:43:27,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:43:27,503 INFO L93 Difference]: Finished difference Result 24420 states and 28776 transitions. [2020-10-28 13:43:27,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:43:27,511 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 374 [2020-10-28 13:43:27,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:43:27,559 INFO L225 Difference]: With dead ends: 24420 [2020-10-28 13:43:27,559 INFO L226 Difference]: Without dead ends: 12203 [2020-10-28 13:43:27,591 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:43:27,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12203 states. [2020-10-28 13:43:27,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12203 to 12192. [2020-10-28 13:43:27,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12192 states. [2020-10-28 13:43:27,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12192 states to 12192 states and 14311 transitions. [2020-10-28 13:43:27,898 INFO L78 Accepts]: Start accepts. Automaton has 12192 states and 14311 transitions. Word has length 374 [2020-10-28 13:43:27,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:43:27,899 INFO L481 AbstractCegarLoop]: Abstraction has 12192 states and 14311 transitions. [2020-10-28 13:43:27,899 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 13:43:27,900 INFO L276 IsEmpty]: Start isEmpty. Operand 12192 states and 14311 transitions. [2020-10-28 13:43:27,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2020-10-28 13:43:27,917 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:43:27,917 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:43:27,918 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 13:43:27,918 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:43:27,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:43:27,919 INFO L82 PathProgramCache]: Analyzing trace with hash -1011962996, now seen corresponding path program 1 times [2020-10-28 13:43:27,919 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:43:27,920 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1143392454] [2020-10-28 13:43:27,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:43:28,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:43:28,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:43:28,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:43:28,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:43:30,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking...