/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=DEEPEST --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/seq-mthreaded/pals_lcr.3_overflow.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 22:54:35,054 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 22:54:35,058 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 22:54:35,117 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 22:54:35,118 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 22:54:35,126 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 22:54:35,128 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 22:54:35,133 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 22:54:35,136 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 22:54:35,144 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 22:54:35,146 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 22:54:35,147 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 22:54:35,147 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 22:54:35,151 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 22:54:35,153 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 22:54:35,155 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 22:54:35,156 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 22:54:35,160 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 22:54:35,180 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 22:54:35,185 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 22:54:35,189 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 22:54:35,191 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 22:54:35,193 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 22:54:35,195 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 22:54:35,202 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 22:54:35,202 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 22:54:35,203 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 22:54:35,204 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 22:54:35,206 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 22:54:35,208 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 22:54:35,208 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 22:54:35,209 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 22:54:35,211 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 22:54:35,212 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 22:54:35,213 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 22:54:35,213 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 22:54:35,214 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 22:54:35,214 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 22:54:35,214 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 22:54:35,215 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 22:54:35,216 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 22:54:35,217 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 [2020-10-27 22:54:35,269 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 22:54:35,270 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 22:54:35,274 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 22:54:35,274 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 22:54:35,275 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 22:54:35,275 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 22:54:35,275 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 22:54:35,275 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 22:54:35,275 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 22:54:35,276 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 22:54:35,277 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 22:54:35,277 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 22:54:35,277 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 22:54:35,277 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 22:54:35,278 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 22:54:35,278 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 22:54:35,278 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 22:54:35,278 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 22:54:35,278 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 22:54:35,279 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 22:54:35,279 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 22:54:35,279 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 22:54:35,279 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 22:54:35,279 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 22:54:35,280 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 22:54:35,280 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 22:54:35,280 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 22:54:35,280 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 22:54:35,280 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 22:54:35,281 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 22:54:35,708 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 22:54:35,740 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 22:54:35,743 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 22:54:35,745 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 22:54:35,746 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 22:54:35,747 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr.3_overflow.ufo.UNBOUNDED.pals.c [2020-10-27 22:54:35,830 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/02a32fe90/bce570f2935744078d0b19112035488c/FLAG38910c8fc [2020-10-27 22:54:36,537 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 22:54:36,538 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded/pals_lcr.3_overflow.ufo.UNBOUNDED.pals.c [2020-10-27 22:54:36,553 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/02a32fe90/bce570f2935744078d0b19112035488c/FLAG38910c8fc [2020-10-27 22:54:36,819 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/02a32fe90/bce570f2935744078d0b19112035488c [2020-10-27 22:54:36,823 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 22:54:36,830 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 22:54:36,832 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 22:54:36,832 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 22:54:36,836 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 22:54:36,837 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 10:54:36" (1/1) ... [2020-10-27 22:54:36,841 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19787aa5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:54:36, skipping insertion in model container [2020-10-27 22:54:36,841 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 10:54:36" (1/1) ... [2020-10-27 22:54:36,850 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 22:54:36,880 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 22:54:37,078 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 22:54:37,090 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 22:54:37,135 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 22:54:37,164 INFO L208 MainTranslator]: Completed translation [2020-10-27 22:54:37,165 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:54:37 WrapperNode [2020-10-27 22:54:37,165 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 22:54:37,166 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 22:54:37,166 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 22:54:37,167 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 22:54:37,179 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:54:37" (1/1) ... [2020-10-27 22:54:37,180 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:54:37" (1/1) ... [2020-10-27 22:54:37,190 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:54:37" (1/1) ... [2020-10-27 22:54:37,190 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:54:37" (1/1) ... [2020-10-27 22:54:37,202 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:54:37" (1/1) ... [2020-10-27 22:54:37,211 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:54:37" (1/1) ... [2020-10-27 22:54:37,214 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:54:37" (1/1) ... [2020-10-27 22:54:37,219 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 22:54:37,220 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 22:54:37,220 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 22:54:37,221 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 22:54:37,222 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:54:37" (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 [2020-10-27 22:54:37,317 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 22:54:37,318 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 22:54:37,318 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 22:54:37,318 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 22:54:37,318 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2020-10-27 22:54:37,319 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2020-10-27 22:54:37,319 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2020-10-27 22:54:37,319 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-10-27 22:54:37,319 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-27 22:54:37,319 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 22:54:37,319 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2020-10-27 22:54:37,320 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 22:54:37,320 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 22:54:37,320 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 22:54:37,320 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 22:54:37,320 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 22:54:37,320 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 22:54:37,321 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-27 22:54:37,321 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 22:54:37,321 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 22:54:37,321 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 22:54:37,321 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 22:54:37,321 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 22:54:37,321 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 22:54:37,322 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 22:54:37,322 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 22:54:37,322 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 22:54:37,322 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 22:54:37,322 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 22:54:37,322 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 22:54:37,322 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 22:54:37,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 22:54:37,323 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 22:54:37,323 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 22:54:38,039 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 22:54:38,039 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 22:54:38,041 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 10:54:38 BoogieIcfgContainer [2020-10-27 22:54:38,042 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 22:54:38,044 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 22:54:38,044 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 22:54:38,048 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 22:54:38,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 10:54:36" (1/3) ... [2020-10-27 22:54:38,049 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f3579a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 10:54:38, skipping insertion in model container [2020-10-27 22:54:38,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:54:37" (2/3) ... [2020-10-27 22:54:38,050 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f3579a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 10:54:38, skipping insertion in model container [2020-10-27 22:54:38,050 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 10:54:38" (3/3) ... [2020-10-27 22:54:38,052 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.3_overflow.ufo.UNBOUNDED.pals.c [2020-10-27 22:54:38,065 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 22:54:38,072 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 22:54:38,086 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 22:54:38,115 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 22:54:38,116 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 22:54:38,116 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 22:54:38,116 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 22:54:38,116 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 22:54:38,116 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 22:54:38,116 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 22:54:38,117 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 22:54:38,139 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states. [2020-10-27 22:54:38,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-27 22:54:38,151 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:54:38,152 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:54:38,153 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:54:38,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:54:38,167 INFO L82 PathProgramCache]: Analyzing trace with hash 192143731, now seen corresponding path program 1 times [2020-10-27 22:54:38,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:54:38,178 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1744024054] [2020-10-27 22:54:38,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:54:38,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:54:38,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:54:38,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:54:38,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-27 22:54:38,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:54:38,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 404 [2020-10-27 22:54:38,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:54:38,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:54:38,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-27 22:54:38,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:54:38,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-27 22:54:39,133 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-27 22:54:39,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:54:39,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:54:39,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:54:39,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:54:39,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:54:39,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:54:39,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 22:54:39,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:54:39,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:54:39,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:54:39,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:54:39,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:54:39,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:54:39,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:54:39,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:54:39,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:54:39,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:54:39,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:54:39,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:54:39,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:54:39,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:54:39,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:54:39,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:54:39,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:54:39,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 22:54:39,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:54:39,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:54:39,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:54:39,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:54:39,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:54:39,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:54:39,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:54:39,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:54:39,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 22:54:39,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:54:39,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:54:39,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-27 22:54:39,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:54:39,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:54:39,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:54:39,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:54:39,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:54:39,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 22:54:39,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:54:39,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:54:39,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 22:54:39,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:54:39,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:54:39,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-27 22:54:39,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:54:39,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:54:39,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:54:39,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:54:39,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:54:39,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 22:54:39,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:54:39,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:54:39,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 22:54:39,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:54:39,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:54:39,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-27 22:54:39,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:54:39,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:54:39,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:54:39,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:54:39,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:54:39,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 22:54:39,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:54:39,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:54:39,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 22:54:39,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:54:39,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:54:39,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-27 22:54:39,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:54:39,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:54:39,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:54:39,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:54:39,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:54:39,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 22:54:39,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:54:39,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:54:39,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:54:39,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:54:39,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:54:39,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 22:54:39,489 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1744024054] [2020-10-27 22:54:39,492 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:54:39,493 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 22:54:39,494 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346695012] [2020-10-27 22:54:39,501 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 22:54:39,502 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:54:39,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 22:54:39,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-27 22:54:39,521 INFO L87 Difference]: Start difference. First operand 96 states. Second operand 6 states. [2020-10-27 22:54:40,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:54:40,157 INFO L93 Difference]: Finished difference Result 153 states and 217 transitions. [2020-10-27 22:54:40,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 22:54:40,159 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 54 [2020-10-27 22:54:40,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:54:40,171 INFO L225 Difference]: With dead ends: 153 [2020-10-27 22:54:40,171 INFO L226 Difference]: Without dead ends: 88 [2020-10-27 22:54:40,175 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-27 22:54:40,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-10-27 22:54:40,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2020-10-27 22:54:40,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-27 22:54:40,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 124 transitions. [2020-10-27 22:54:40,238 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 124 transitions. Word has length 54 [2020-10-27 22:54:40,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:54:40,239 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 124 transitions. [2020-10-27 22:54:40,239 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 22:54:40,239 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 124 transitions. [2020-10-27 22:54:40,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-27 22:54:40,242 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:54:40,242 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:54:40,242 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 22:54:40,242 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:54:40,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:54:40,243 INFO L82 PathProgramCache]: Analyzing trace with hash -1653223435, now seen corresponding path program 1 times [2020-10-27 22:54:40,243 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:54:40,244 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1191053682] [2020-10-27 22:54:40,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:54:40,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:54:40,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:54:40,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:54:40,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-27 22:54:40,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:54:40,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 651 [2020-10-27 22:54:40,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:54:40,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 22:54:40,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 22:54:40,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:54:40,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:54:41,113 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-27 22:54:41,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:54:41,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:54:41,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:54:41,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:54:41,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:54:41,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:54:41,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 22:54:41,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:54:41,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:54:41,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:54:41,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:54:41,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:54:41,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:54:41,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:54:41,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:54:41,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:54:41,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:54:41,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:54:41,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 22:54:41,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:54:41,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:54:41,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:54:41,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:54:41,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:54:41,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 22:54:41,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:54:41,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:54:41,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:54:41,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:54:41,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:54:41,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 22:54:41,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:54:41,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:54:41,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:54:41,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:54:41,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:54:41,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-27 22:54:41,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:54:41,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:54:41,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:54:41,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:54:41,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:54:41,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 22:54:41,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:54:41,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:54:41,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 22:54:41,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:54:41,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-27 22:54:41,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-27 22:54:41,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:54:41,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:54:41,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:54:41,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:54:41,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:54:41,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 22:54:41,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:54:41,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:54:41,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 22:54:41,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:54:41,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 22:54:41,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-27 22:54:41,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:54:41,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:54:41,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:54:41,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:54:41,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:54:41,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 22:54:41,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:54:41,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:54:41,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 22:54:41,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:54:41,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:54:41,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-27 22:54:41,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:54:41,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:54:41,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:54:41,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:54:41,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:54:41,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:54:41,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:54:41,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:54:41,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:54:41,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:54:41,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:54:41,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 22:54:41,460 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1191053682] [2020-10-27 22:54:41,461 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:54:41,461 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-27 22:54:41,461 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622931660] [2020-10-27 22:54:41,464 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 22:54:41,465 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:54:41,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 22:54:41,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-27 22:54:41,467 INFO L87 Difference]: Start difference. First operand 88 states and 124 transitions. Second operand 12 states. [2020-10-27 22:54:41,644 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-27 22:54:41,799 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-27 22:54:42,048 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 22:54:42,215 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-27 22:54:43,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:54:43,190 INFO L93 Difference]: Finished difference Result 148 states and 205 transitions. [2020-10-27 22:54:43,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 22:54:43,191 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 54 [2020-10-27 22:54:43,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:54:43,194 INFO L225 Difference]: With dead ends: 148 [2020-10-27 22:54:43,195 INFO L226 Difference]: Without dead ends: 88 [2020-10-27 22:54:43,196 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2020-10-27 22:54:43,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-10-27 22:54:43,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2020-10-27 22:54:43,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-27 22:54:43,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 108 transitions. [2020-10-27 22:54:43,216 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 108 transitions. Word has length 54 [2020-10-27 22:54:43,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:54:43,217 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 108 transitions. [2020-10-27 22:54:43,217 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 22:54:43,217 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 108 transitions. [2020-10-27 22:54:43,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-27 22:54:43,220 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:54:43,220 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:54:43,220 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 22:54:43,220 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:54:43,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:54:43,221 INFO L82 PathProgramCache]: Analyzing trace with hash 771533291, now seen corresponding path program 1 times [2020-10-27 22:54:43,221 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:54:43,222 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [666871225] [2020-10-27 22:54:43,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:54:43,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:54:43,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:54:43,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:54:44,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:54:44,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-27 22:54:44,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:54:44,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1225 [2020-10-27 22:54:44,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:54:44,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:54:44,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-27 22:54:44,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 22:54:44,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:54:44,694 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-27 22:54:44,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:54:44,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:54:44,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:54:44,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:54:44,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:54:44,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:54:44,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 22:54:44,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:54:44,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:54:44,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:54:44,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:54:44,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:54:44,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:54:44,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:54:44,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:54:44,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:54:44,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 22:54:44,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:54:44,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 22:54:44,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:54:44,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:54:44,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:54:44,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:54:44,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:54:44,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 22:54:44,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:54:44,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:54:44,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:54:44,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:54:44,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:54:44,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:54:44,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:54:44,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:54:44,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:54:44,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:54:44,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:54:44,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-27 22:54:44,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:54:44,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:54:44,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:54:44,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:54:44,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:54:44,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 22:54:44,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:54:44,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:54:44,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:54:44,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 22:54:44,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:54:44,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-27 22:54:44,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:54:44,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:54:44,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:54:44,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:54:44,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:54:44,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:54:44,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:54:44,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:54:44,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 22:54:44,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:54:44,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 19 [2020-10-27 22:54:44,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-27 22:54:44,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:54:44,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:54:44,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:54:44,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:54:44,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:54:44,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:54:44,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:54:44,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:54:44,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 22:54:44,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:54:44,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:54:44,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-27 22:54:44,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:54:44,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:54:44,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:54:44,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:54:44,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:54:44,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:54:44,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:54:44,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:54:44,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:54:44,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:54:44,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:54:44,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 22:54:44,969 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [666871225] [2020-10-27 22:54:44,970 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:54:44,970 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 22:54:44,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021571303] [2020-10-27 22:54:44,972 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 22:54:44,972 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:54:44,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 22:54:44,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-27 22:54:44,973 INFO L87 Difference]: Start difference. First operand 88 states and 108 transitions. Second operand 9 states. [2020-10-27 22:54:45,163 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-27 22:54:46,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:54:46,358 INFO L93 Difference]: Finished difference Result 190 states and 248 transitions. [2020-10-27 22:54:46,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 22:54:46,359 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 69 [2020-10-27 22:54:46,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:54:46,363 INFO L225 Difference]: With dead ends: 190 [2020-10-27 22:54:46,363 INFO L226 Difference]: Without dead ends: 136 [2020-10-27 22:54:46,364 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2020-10-27 22:54:46,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-10-27 22:54:46,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 133. [2020-10-27 22:54:46,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-10-27 22:54:46,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 170 transitions. [2020-10-27 22:54:46,391 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 170 transitions. Word has length 69 [2020-10-27 22:54:46,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:54:46,392 INFO L481 AbstractCegarLoop]: Abstraction has 133 states and 170 transitions. [2020-10-27 22:54:46,392 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 22:54:46,392 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 170 transitions. [2020-10-27 22:54:46,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-27 22:54:46,395 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:54:46,395 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:54:46,395 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 22:54:46,395 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:54:46,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:54:46,396 INFO L82 PathProgramCache]: Analyzing trace with hash 1781606837, now seen corresponding path program 1 times [2020-10-27 22:54:46,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:54:46,396 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1318680165] [2020-10-27 22:54:46,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:54:46,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:54:46,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:54:47,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:54:47,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-27 22:54:47,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:54:47,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 567 [2020-10-27 22:54:47,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:54:47,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 22:54:47,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-27 22:54:47,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-27 22:54:47,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:54:47,198 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-27 22:54:47,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:54:47,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:54:47,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:54:47,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:54:47,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:54:47,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:54:47,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 22:54:47,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:54:47,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:54:47,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:54:47,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:54:47,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:54:47,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:54:47,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:54:47,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:54:47,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:54:47,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 22:54:47,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:54:47,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 22:54:47,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:54:47,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:54:47,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:54:47,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 22:54:47,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:54:47,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 22:54:47,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:54:47,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:54:47,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:54:47,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:54:47,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:54:47,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:54:47,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:54:47,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:54:47,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:54:47,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:54:47,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:54:47,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-27 22:54:47,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:54:47,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:54:47,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:54:47,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:54:47,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:54:47,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 22:54:47,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:54:47,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:54:47,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:54:47,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 22:54:47,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:54:47,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-27 22:54:47,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:54:47,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:54:47,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:54:47,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:54:47,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:54:47,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 22:54:47,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:54:47,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:54:47,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:54:47,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 22:54:47,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:54:47,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-27 22:54:47,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:54:47,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:54:47,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:54:47,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:54:47,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:54:47,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 22:54:47,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:54:47,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:54:47,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:54:47,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 22:54:47,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:54:47,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-27 22:54:47,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:54:47,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:54:47,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:54:47,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:54:47,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:54:47,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 22:54:47,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:54:47,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:54:47,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 22:54:47,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 22:54:47,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:54:47,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 22:54:47,606 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1318680165] [2020-10-27 22:54:47,606 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:54:47,607 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-27 22:54:47,607 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456830353] [2020-10-27 22:54:47,607 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 22:54:47,608 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:54:47,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 22:54:47,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2020-10-27 22:54:47,609 INFO L87 Difference]: Start difference. First operand 133 states and 170 transitions. Second operand 13 states. [2020-10-27 22:54:47,826 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-27 22:54:48,013 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-10-27 22:54:48,195 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 22:54:49,194 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-27 22:54:49,340 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-27 22:54:49,554 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-27 22:54:50,955 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 22:54:53,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:54:53,035 INFO L93 Difference]: Finished difference Result 943 states and 1302 transitions. [2020-10-27 22:54:53,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2020-10-27 22:54:53,036 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 69 [2020-10-27 22:54:53,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:54:53,046 INFO L225 Difference]: With dead ends: 943 [2020-10-27 22:54:53,046 INFO L226 Difference]: Without dead ends: 844 [2020-10-27 22:54:53,050 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 928 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=646, Invalid=2324, Unknown=0, NotChecked=0, Total=2970 [2020-10-27 22:54:53,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 844 states. [2020-10-27 22:54:53,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 844 to 823. [2020-10-27 22:54:53,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 823 states. [2020-10-27 22:54:53,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 823 states to 823 states and 1124 transitions. [2020-10-27 22:54:53,194 INFO L78 Accepts]: Start accepts. Automaton has 823 states and 1124 transitions. Word has length 69 [2020-10-27 22:54:53,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:54:53,195 INFO L481 AbstractCegarLoop]: Abstraction has 823 states and 1124 transitions. [2020-10-27 22:54:53,195 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 22:54:53,195 INFO L276 IsEmpty]: Start isEmpty. Operand 823 states and 1124 transitions. [2020-10-27 22:54:53,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-27 22:54:53,197 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:54:53,198 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:54:53,198 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 22:54:53,198 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:54:53,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:54:53,199 INFO L82 PathProgramCache]: Analyzing trace with hash -2089262979, now seen corresponding path program 1 times [2020-10-27 22:54:53,199 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:54:53,199 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1777337581] [2020-10-27 22:54:53,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:54:53,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:54:53,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:54:53,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:54:53,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-27 22:54:53,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:54:53,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 602 [2020-10-27 22:54:53,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:54:53,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 22:54:53,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-27 22:54:53,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-27 22:54:53,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:54:54,001 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-27 22:54:54,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:54:54,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:54:54,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:54:54,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:54:54,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:54:54,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:54:54,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-27 22:54:54,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:54:54,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:54:54,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:54:54,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:54:54,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:54:54,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:54:54,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:54:54,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:54:54,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:54:54,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 22:54:54,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:54:54,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 22:54:54,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:54:54,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:54:54,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:54:54,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 22:54:54,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:54:54,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 22:54:54,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:54:54,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:54:54,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:54:54,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:54:54,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:54:54,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:54:54,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:54:54,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:54:54,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:54:54,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:54:54,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:54:54,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-27 22:54:54,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:54:54,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:54:54,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:54:54,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:54:54,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:54:54,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 22:54:54,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:54:54,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:54:54,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:54:54,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 22:54:54,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:54:54,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-27 22:54:54,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:54:54,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:54:54,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:54:54,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:54:54,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:54:54,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 22:54:54,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:54:54,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:54:54,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:54:54,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 22:54:54,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:54:54,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-27 22:54:54,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:54:54,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:54:54,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:54:54,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:54:54,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:54:54,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 22:54:54,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:54:54,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:54:54,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:54:54,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 22:54:54,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:54:54,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-27 22:54:54,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:54:54,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:54:54,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:54:54,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 22:54:54,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:54:54,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 22:54:54,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:54:54,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:54:54,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 22:54:54,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 22:54:54,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:54:54,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 22:54:54,485 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1777337581] [2020-10-27 22:54:54,485 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:54:54,486 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-27 22:54:54,486 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229871259] [2020-10-27 22:54:54,488 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 22:54:54,488 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:54:54,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 22:54:54,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2020-10-27 22:54:54,489 INFO L87 Difference]: Start difference. First operand 823 states and 1124 transitions. Second operand 13 states. [2020-10-27 22:54:54,659 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-27 22:54:54,828 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-10-27 22:54:55,003 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 22:54:55,691 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-27 22:54:56,264 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-27 22:54:57,418 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-27 22:55:00,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:55:00,326 INFO L93 Difference]: Finished difference Result 2212 states and 3248 transitions. [2020-10-27 22:55:00,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-10-27 22:55:00,327 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 71 [2020-10-27 22:55:00,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:55:00,352 INFO L225 Difference]: With dead ends: 2212 [2020-10-27 22:55:00,352 INFO L226 Difference]: Without dead ends: 1423 [2020-10-27 22:55:00,365 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 917 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=655, Invalid=2101, Unknown=0, NotChecked=0, Total=2756 [2020-10-27 22:55:00,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1423 states. [2020-10-27 22:55:00,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1423 to 1120. [2020-10-27 22:55:00,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1120 states. [2020-10-27 22:55:00,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1120 states to 1120 states and 1541 transitions. [2020-10-27 22:55:00,576 INFO L78 Accepts]: Start accepts. Automaton has 1120 states and 1541 transitions. Word has length 71 [2020-10-27 22:55:00,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:55:00,578 INFO L481 AbstractCegarLoop]: Abstraction has 1120 states and 1541 transitions. [2020-10-27 22:55:00,578 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 22:55:00,578 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states and 1541 transitions. [2020-10-27 22:55:00,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-27 22:55:00,589 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:55:00,589 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:55:00,590 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 22:55:00,590 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:55:00,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:55:00,590 INFO L82 PathProgramCache]: Analyzing trace with hash -825192507, now seen corresponding path program 1 times [2020-10-27 22:55:00,591 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:55:00,591 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [634400705] [2020-10-27 22:55:00,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:55:00,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:00,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:00,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:00,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:01,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:01,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-27 22:55:01,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 22:55:01,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 696 [2020-10-27 22:55:01,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:01,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 22:55:01,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-27 22:55:01,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:55:01,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:01,610 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-27 22:55:01,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:55:01,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:01,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:01,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:01,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:55:01,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:01,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 22:55:01,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:01,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:55:01,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:01,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:55:01,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:01,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:55:01,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:01,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:01,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:01,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 22:55:01,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:01,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:55:01,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:01,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:55:01,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:01,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:55:01,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:01,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 22:55:01,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:01,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:01,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:01,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:55:01,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:01,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 22:55:01,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:01,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:55:01,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:01,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:55:01,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:01,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-27 22:55:01,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:01,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:01,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:01,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:55:01,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:01,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:55:01,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:01,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:55:01,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:01,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:55:01,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:01,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-27 22:55:01,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:01,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:01,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:01,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:55:01,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:01,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:55:01,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:01,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:55:01,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:01,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:55:01,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:01,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-27 22:55:01,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:01,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:01,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:01,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:55:01,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:01,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:55:01,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:01,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:55:01,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:01,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:55:01,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:01,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-27 22:55:01,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:01,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:01,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:01,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:01,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 22:55:01,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:55:01,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 22:55:01,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:01,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:55:01,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-27 22:55:01,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 22:55:01,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:01,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 22:55:01,792 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [634400705] [2020-10-27 22:55:01,792 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:55:01,792 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 22:55:01,792 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143499232] [2020-10-27 22:55:01,793 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 22:55:01,793 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:55:01,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 22:55:01,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-27 22:55:01,794 INFO L87 Difference]: Start difference. First operand 1120 states and 1541 transitions. Second operand 11 states. [2020-10-27 22:55:02,493 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-27 22:55:03,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:55:03,377 INFO L93 Difference]: Finished difference Result 2780 states and 3872 transitions. [2020-10-27 22:55:03,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 22:55:03,378 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 71 [2020-10-27 22:55:03,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:55:03,389 INFO L225 Difference]: With dead ends: 2780 [2020-10-27 22:55:03,389 INFO L226 Difference]: Without dead ends: 1694 [2020-10-27 22:55:03,393 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-10-27 22:55:03,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1694 states. [2020-10-27 22:55:03,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1694 to 1691. [2020-10-27 22:55:03,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1691 states. [2020-10-27 22:55:03,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1691 states to 1691 states and 2311 transitions. [2020-10-27 22:55:03,573 INFO L78 Accepts]: Start accepts. Automaton has 1691 states and 2311 transitions. Word has length 71 [2020-10-27 22:55:03,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:55:03,573 INFO L481 AbstractCegarLoop]: Abstraction has 1691 states and 2311 transitions. [2020-10-27 22:55:03,573 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 22:55:03,574 INFO L276 IsEmpty]: Start isEmpty. Operand 1691 states and 2311 transitions. [2020-10-27 22:55:03,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-27 22:55:03,575 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:55:03,575 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:55:03,575 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 22:55:03,575 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:55:03,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:55:03,576 INFO L82 PathProgramCache]: Analyzing trace with hash 1338113601, now seen corresponding path program 1 times [2020-10-27 22:55:03,576 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:55:03,576 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [981239934] [2020-10-27 22:55:03,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:55:03,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:03,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:03,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:03,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:03,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:06,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:06,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-27 22:55:06,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 22:55:06,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2639 [2020-10-27 22:55:06,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:06,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 22:55:06,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-27 22:55:06,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 22:55:06,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:06,379 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-27 22:55:06,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:55:06,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:06,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:06,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:06,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:55:06,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:06,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 22:55:06,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:06,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:55:06,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:06,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:55:06,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:06,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:55:06,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:06,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:06,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:06,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 22:55:06,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:06,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:55:06,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:06,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:55:06,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:06,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:55:06,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:06,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 22:55:06,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:06,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:06,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:06,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:55:06,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:06,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 22:55:06,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:06,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:55:06,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:06,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:55:06,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:06,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-27 22:55:06,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:06,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:06,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:06,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:55:06,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:06,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 22:55:06,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:06,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:55:06,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:06,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:55:06,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:06,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-27 22:55:06,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:06,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:06,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:06,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:55:06,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:06,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 22:55:06,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:06,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:55:06,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:06,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:55:06,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:06,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-27 22:55:06,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:06,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:06,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:06,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:55:06,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:06,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 22:55:06,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:06,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 22:55:06,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:55:06,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 22:55:06,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:06,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-27 22:55:06,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:06,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:06,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:06,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:55:06,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:06,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:55:06,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:06,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:55:06,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:55:06,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:55:06,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:06,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 22:55:06,582 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [981239934] [2020-10-27 22:55:06,582 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:55:06,582 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 22:55:06,582 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11594066] [2020-10-27 22:55:06,583 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 22:55:06,583 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:55:06,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 22:55:06,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-27 22:55:06,584 INFO L87 Difference]: Start difference. First operand 1691 states and 2311 transitions. Second operand 10 states. [2020-10-27 22:55:06,903 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2020-10-27 22:55:07,256 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 22:55:08,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:55:08,128 INFO L93 Difference]: Finished difference Result 3582 states and 4840 transitions. [2020-10-27 22:55:08,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 22:55:08,129 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 71 [2020-10-27 22:55:08,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:55:08,142 INFO L225 Difference]: With dead ends: 3582 [2020-10-27 22:55:08,142 INFO L226 Difference]: Without dead ends: 1925 [2020-10-27 22:55:08,148 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2020-10-27 22:55:08,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1925 states. [2020-10-27 22:55:08,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1925 to 1731. [2020-10-27 22:55:08,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1731 states. [2020-10-27 22:55:08,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1731 states to 1731 states and 2363 transitions. [2020-10-27 22:55:08,336 INFO L78 Accepts]: Start accepts. Automaton has 1731 states and 2363 transitions. Word has length 71 [2020-10-27 22:55:08,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:55:08,336 INFO L481 AbstractCegarLoop]: Abstraction has 1731 states and 2363 transitions. [2020-10-27 22:55:08,337 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 22:55:08,337 INFO L276 IsEmpty]: Start isEmpty. Operand 1731 states and 2363 transitions. [2020-10-27 22:55:08,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-27 22:55:08,338 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:55:08,338 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:55:08,338 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 22:55:08,338 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:55:08,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:55:08,339 INFO L82 PathProgramCache]: Analyzing trace with hash -916829943, now seen corresponding path program 1 times [2020-10-27 22:55:08,339 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:55:08,339 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1663241342] [2020-10-27 22:55:08,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:55:08,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:08,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:08,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:08,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:08,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:11,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:11,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-27 22:55:11,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 22:55:11,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2654 [2020-10-27 22:55:11,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:11,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 22:55:11,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-27 22:55:11,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-27 22:55:11,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:11,174 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-27 22:55:11,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:55:11,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:11,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:11,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:11,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:55:11,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:11,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 22:55:11,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:11,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:55:11,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:11,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:55:11,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-27 22:55:11,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:55:11,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:11,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:11,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:11,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 22:55:11,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:11,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 22:55:11,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:11,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:55:11,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:11,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:55:11,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:11,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 22:55:11,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:11,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:11,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:11,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:55:11,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:11,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:55:11,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:11,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:55:11,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:11,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:55:11,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:11,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-27 22:55:11,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:11,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:11,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:11,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:55:11,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:11,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 22:55:11,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:11,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:55:11,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:11,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:55:11,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:11,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-27 22:55:11,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:11,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:11,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:11,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:55:11,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:11,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 22:55:11,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:11,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 22:55:11,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:55:11,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 22:55:11,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:11,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-27 22:55:11,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:11,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:11,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:11,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:55:11,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:11,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:55:11,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:11,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:55:11,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 22:55:11,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:55:11,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:11,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-27 22:55:11,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:11,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:11,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:11,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:55:11,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:11,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:55:11,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:11,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:55:11,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:55:11,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:55:11,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:11,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 22:55:11,413 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1663241342] [2020-10-27 22:55:11,413 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:55:11,413 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 22:55:11,413 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168861091] [2020-10-27 22:55:11,414 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 22:55:11,414 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:55:11,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 22:55:11,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-27 22:55:11,415 INFO L87 Difference]: Start difference. First operand 1731 states and 2363 transitions. Second operand 10 states. [2020-10-27 22:55:11,693 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2020-10-27 22:55:11,894 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 22:55:12,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:55:12,824 INFO L93 Difference]: Finished difference Result 3981 states and 5419 transitions. [2020-10-27 22:55:12,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 22:55:12,825 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 71 [2020-10-27 22:55:12,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:55:12,840 INFO L225 Difference]: With dead ends: 3981 [2020-10-27 22:55:12,841 INFO L226 Difference]: Without dead ends: 2298 [2020-10-27 22:55:12,848 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2020-10-27 22:55:12,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2298 states. [2020-10-27 22:55:13,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2298 to 1814. [2020-10-27 22:55:13,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1814 states. [2020-10-27 22:55:13,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1814 states to 1814 states and 2480 transitions. [2020-10-27 22:55:13,050 INFO L78 Accepts]: Start accepts. Automaton has 1814 states and 2480 transitions. Word has length 71 [2020-10-27 22:55:13,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:55:13,051 INFO L481 AbstractCegarLoop]: Abstraction has 1814 states and 2480 transitions. [2020-10-27 22:55:13,052 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 22:55:13,052 INFO L276 IsEmpty]: Start isEmpty. Operand 1814 states and 2480 transitions. [2020-10-27 22:55:13,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-27 22:55:13,052 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:55:13,053 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:55:13,053 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 22:55:13,053 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:55:13,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:55:13,054 INFO L82 PathProgramCache]: Analyzing trace with hash 1482103816, now seen corresponding path program 1 times [2020-10-27 22:55:13,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:55:13,054 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [204579856] [2020-10-27 22:55:13,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:55:13,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:13,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:13,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:13,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-27 22:55:13,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:13,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 306 [2020-10-27 22:55:13,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:13,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 22:55:13,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-27 22:55:13,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:55:13,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:13,616 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-27 22:55:13,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:55:13,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:13,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:13,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:13,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:55:13,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:13,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 22:55:13,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:13,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:55:13,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:13,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:55:13,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:13,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:55:13,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:13,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:13,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:13,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 22:55:13,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:13,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:55:13,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:13,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:55:13,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:13,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:55:13,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:13,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 22:55:13,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:13,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:13,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:13,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:55:13,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:13,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 22:55:13,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:13,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:55:13,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:13,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:55:13,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:13,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-27 22:55:13,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:13,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:13,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:13,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:55:13,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:13,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:55:13,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:13,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:55:13,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:13,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:55:13,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:13,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-27 22:55:13,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:13,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:13,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:13,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:55:13,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:13,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:55:13,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:13,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:55:13,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:13,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:55:13,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:13,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-27 22:55:13,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:13,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:13,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:13,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:55:13,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:13,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:55:13,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:13,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:55:13,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:13,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:55:13,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:13,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-27 22:55:13,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:13,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:13,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:13,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:55:13,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:13,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 22:55:13,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:13,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:55:13,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:13,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 22:55:13,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:13,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 22:55:13,849 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [204579856] [2020-10-27 22:55:13,849 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:55:13,849 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-27 22:55:13,850 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290704171] [2020-10-27 22:55:13,850 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 22:55:13,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:55:13,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 22:55:13,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-27 22:55:13,851 INFO L87 Difference]: Start difference. First operand 1814 states and 2480 transitions. Second operand 12 states. [2020-10-27 22:55:14,640 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 22:55:14,791 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-27 22:55:14,963 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-27 22:55:15,140 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2020-10-27 22:55:15,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:55:15,614 INFO L93 Difference]: Finished difference Result 1984 states and 2782 transitions. [2020-10-27 22:55:15,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 22:55:15,614 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 72 [2020-10-27 22:55:15,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:55:15,629 INFO L225 Difference]: With dead ends: 1984 [2020-10-27 22:55:15,630 INFO L226 Difference]: Without dead ends: 1981 [2020-10-27 22:55:15,631 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2020-10-27 22:55:15,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1981 states. [2020-10-27 22:55:15,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1981 to 1868. [2020-10-27 22:55:15,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1868 states. [2020-10-27 22:55:15,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1868 states to 1868 states and 2531 transitions. [2020-10-27 22:55:15,838 INFO L78 Accepts]: Start accepts. Automaton has 1868 states and 2531 transitions. Word has length 72 [2020-10-27 22:55:15,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:55:15,839 INFO L481 AbstractCegarLoop]: Abstraction has 1868 states and 2531 transitions. [2020-10-27 22:55:15,839 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 22:55:15,839 INFO L276 IsEmpty]: Start isEmpty. Operand 1868 states and 2531 transitions. [2020-10-27 22:55:15,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-27 22:55:15,839 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:55:15,840 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:55:15,840 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 22:55:15,840 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:55:15,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:55:15,840 INFO L82 PathProgramCache]: Analyzing trace with hash 1951537577, now seen corresponding path program 1 times [2020-10-27 22:55:15,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:55:15,841 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1795593059] [2020-10-27 22:55:15,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:55:15,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:15,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:16,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:16,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:16,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-27 22:55:16,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:55:16,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 261 [2020-10-27 22:55:16,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:16,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:55:16,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 22:55:16,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-27 22:55:16,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:16,293 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-27 22:55:16,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:55:16,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:16,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:16,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:16,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:55:16,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:16,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 22:55:16,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:16,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:55:16,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:16,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:55:16,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:16,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:55:16,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:16,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:16,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:16,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 22:55:16,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:16,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 22:55:16,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:16,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:55:16,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:16,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 22:55:16,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:16,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 22:55:16,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:16,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:16,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:16,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:55:16,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:16,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:55:16,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:16,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:55:16,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:16,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:55:16,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:16,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-27 22:55:16,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:16,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:16,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:16,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:55:16,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:16,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 22:55:16,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:16,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:55:16,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:55:16,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 22:55:16,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:16,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-27 22:55:16,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:16,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:16,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:16,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:55:16,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:16,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 22:55:16,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:16,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:55:16,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:16,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:55:16,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:16,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-27 22:55:16,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:16,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:16,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:16,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:55:16,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:16,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 22:55:16,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:16,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:55:16,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:16,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:55:16,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:16,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-27 22:55:16,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:16,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:16,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:16,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:16,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:55:16,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:55:16,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 22:55:16,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:16,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:55:16,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 22:55:16,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:55:16,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:16,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 22:55:16,559 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1795593059] [2020-10-27 22:55:16,559 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:55:16,559 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 22:55:16,560 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862459410] [2020-10-27 22:55:16,560 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 22:55:16,560 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:55:16,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 22:55:16,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-27 22:55:16,561 INFO L87 Difference]: Start difference. First operand 1868 states and 2531 transitions. Second operand 9 states. [2020-10-27 22:55:16,722 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-27 22:55:17,699 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-27 22:55:18,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:55:18,540 INFO L93 Difference]: Finished difference Result 4130 states and 5635 transitions. [2020-10-27 22:55:18,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-27 22:55:18,541 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 72 [2020-10-27 22:55:18,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:55:18,557 INFO L225 Difference]: With dead ends: 4130 [2020-10-27 22:55:18,558 INFO L226 Difference]: Without dead ends: 2319 [2020-10-27 22:55:18,565 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=118, Invalid=302, Unknown=0, NotChecked=0, Total=420 [2020-10-27 22:55:18,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2319 states. [2020-10-27 22:55:18,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2319 to 2268. [2020-10-27 22:55:18,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2268 states. [2020-10-27 22:55:18,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2268 states to 2268 states and 3083 transitions. [2020-10-27 22:55:18,784 INFO L78 Accepts]: Start accepts. Automaton has 2268 states and 3083 transitions. Word has length 72 [2020-10-27 22:55:18,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:55:18,785 INFO L481 AbstractCegarLoop]: Abstraction has 2268 states and 3083 transitions. [2020-10-27 22:55:18,785 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 22:55:18,785 INFO L276 IsEmpty]: Start isEmpty. Operand 2268 states and 3083 transitions. [2020-10-27 22:55:18,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-27 22:55:18,787 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:55:18,788 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:55:18,788 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 22:55:18,788 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:55:18,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:55:18,789 INFO L82 PathProgramCache]: Analyzing trace with hash -7575546, now seen corresponding path program 1 times [2020-10-27 22:55:18,789 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:55:18,789 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [102422452] [2020-10-27 22:55:18,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:55:18,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:18,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:18,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:18,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:20,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:20,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:23,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:23,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-27 22:55:23,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 22:55:23,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-27 22:55:23,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:23,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:55:23,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-27 22:55:23,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-27 22:55:23,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:23,996 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-27 22:55:23,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:55:24,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:24,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:24,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:24,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:55:24,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:24,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 22:55:24,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:24,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:55:24,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:24,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:55:24,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:24,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:55:24,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:24,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:24,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:24,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 22:55:24,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:24,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 22:55:24,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:24,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:55:24,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:24,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:55:24,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:24,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 22:55:24,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:24,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:24,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:24,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:55:24,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:24,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 22:55:24,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:24,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:55:24,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:24,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:55:24,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:24,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-27 22:55:24,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:24,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:24,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:24,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:55:24,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:24,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:55:24,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:24,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:55:24,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:24,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:55:24,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:24,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-27 22:55:24,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:24,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:24,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:24,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:55:24,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:24,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 22:55:24,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:24,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:55:24,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:24,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 22:55:24,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:24,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-27 22:55:24,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:24,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:24,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:24,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:55:24,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:24,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 22:55:24,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:24,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:55:24,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:24,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:55:24,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:24,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-27 22:55:24,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:24,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:24,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:24,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:55:24,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:24,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:55:24,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:24,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:55:24,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:24,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:55:24,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:24,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-27 22:55:24,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:24,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:24,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:24,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:55:24,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:24,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:55:24,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:24,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:55:24,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:24,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:55:24,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:24,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-27 22:55:24,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:24,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:24,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:24,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:55:24,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:24,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 22:55:24,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:24,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:55:24,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:24,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:55:24,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:24,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-27 22:55:24,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:24,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:24,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:24,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:55:24,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:24,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 22:55:24,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:24,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:55:24,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:55:24,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 22:55:24,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:24,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-27 22:55:24,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:24,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:24,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:24,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:55:24,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:24,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:55:24,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:24,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:55:24,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-27 22:55:24,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:55:24,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:24,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-27 22:55:24,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:24,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:24,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:24,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:55:24,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:24,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:55:24,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:24,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:55:24,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:55:24,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:55:24,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:24,301 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-27 22:55:24,305 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [102422452] [2020-10-27 22:55:24,305 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:55:24,305 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 22:55:24,306 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019097397] [2020-10-27 22:55:24,306 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 22:55:24,306 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:55:24,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 22:55:24,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-27 22:55:24,307 INFO L87 Difference]: Start difference. First operand 2268 states and 3083 transitions. Second operand 9 states. [2020-10-27 22:55:24,529 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 22:55:24,984 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-10-27 22:55:25,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:55:25,841 INFO L93 Difference]: Finished difference Result 6264 states and 8615 transitions. [2020-10-27 22:55:25,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 22:55:25,842 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 109 [2020-10-27 22:55:25,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:55:25,868 INFO L225 Difference]: With dead ends: 6264 [2020-10-27 22:55:25,868 INFO L226 Difference]: Without dead ends: 4053 [2020-10-27 22:55:25,877 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2020-10-27 22:55:25,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4053 states. [2020-10-27 22:55:26,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4053 to 3879. [2020-10-27 22:55:26,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3879 states. [2020-10-27 22:55:26,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3879 states to 3879 states and 5227 transitions. [2020-10-27 22:55:26,246 INFO L78 Accepts]: Start accepts. Automaton has 3879 states and 5227 transitions. Word has length 109 [2020-10-27 22:55:26,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:55:26,247 INFO L481 AbstractCegarLoop]: Abstraction has 3879 states and 5227 transitions. [2020-10-27 22:55:26,247 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 22:55:26,247 INFO L276 IsEmpty]: Start isEmpty. Operand 3879 states and 5227 transitions. [2020-10-27 22:55:26,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-27 22:55:26,250 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:55:26,250 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:55:26,250 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 22:55:26,250 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:55:26,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:55:26,251 INFO L82 PathProgramCache]: Analyzing trace with hash -762110448, now seen corresponding path program 1 times [2020-10-27 22:55:26,251 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:55:26,251 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1721801043] [2020-10-27 22:55:26,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:55:26,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:26,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:26,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:26,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:28,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:28,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:31,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:31,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-27 22:55:31,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 22:55:31,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-27 22:55:31,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:31,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 22:55:31,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-27 22:55:31,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-27 22:55:31,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:31,470 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-27 22:55:31,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:55:31,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:31,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:31,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:31,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:55:31,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:31,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:55:31,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:31,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:55:31,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:31,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:55:31,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:31,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:55:31,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:31,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:31,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:31,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 22:55:31,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:31,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 22:55:31,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:31,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:55:31,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:31,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 22:55:31,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:31,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 22:55:31,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:31,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:31,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:31,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:55:31,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:31,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 22:55:31,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:31,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:55:31,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:31,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:55:31,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:31,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-27 22:55:31,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:31,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:31,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:31,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:55:31,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:31,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:55:31,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:31,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:55:31,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:31,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:55:31,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:31,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-27 22:55:31,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:31,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:31,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:31,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:55:31,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:31,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:55:31,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:31,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:55:31,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:31,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:55:31,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:31,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-27 22:55:31,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:31,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:31,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:31,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:55:31,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:31,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 22:55:31,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:31,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:55:31,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:55:31,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 22:55:31,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:31,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-27 22:55:31,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:31,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:31,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:31,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:55:31,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:31,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:55:31,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:31,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 22:55:31,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:31,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:55:31,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:31,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-27 22:55:31,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:31,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:31,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:31,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:55:31,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:31,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:55:31,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:31,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:55:31,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:31,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:55:31,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:31,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-27 22:55:31,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:31,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:31,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:31,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:55:31,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:31,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 22:55:31,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:31,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:55:31,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:55:31,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 22:55:31,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:31,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-27 22:55:31,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:31,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:31,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:31,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:55:31,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:31,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 22:55:31,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:31,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:55:31,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:55:31,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 22:55:31,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:31,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-27 22:55:31,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:31,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:31,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:31,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:55:31,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:31,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 22:55:31,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:31,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 22:55:31,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:31,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:55:31,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:31,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-27 22:55:31,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:31,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:31,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:31,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:55:31,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:31,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:55:31,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:31,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:55:31,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 22:55:31,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 22:55:31,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:31,868 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 10 proven. 12 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-27 22:55:31,869 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1721801043] [2020-10-27 22:55:31,869 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:55:31,869 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-27 22:55:31,869 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39682988] [2020-10-27 22:55:31,870 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-27 22:55:31,870 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:55:31,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-27 22:55:31,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2020-10-27 22:55:31,871 INFO L87 Difference]: Start difference. First operand 3879 states and 5227 transitions. Second operand 15 states. [2020-10-27 22:55:32,203 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 112 [2020-10-27 22:55:32,402 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-27 22:55:33,024 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-27 22:55:34,226 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 112 [2020-10-27 22:55:34,417 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-27 22:55:36,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:55:36,686 INFO L93 Difference]: Finished difference Result 8937 states and 12384 transitions. [2020-10-27 22:55:36,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-27 22:55:36,687 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 109 [2020-10-27 22:55:36,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:55:36,725 INFO L225 Difference]: With dead ends: 8937 [2020-10-27 22:55:36,725 INFO L226 Difference]: Without dead ends: 5525 [2020-10-27 22:55:36,741 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 439 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=490, Invalid=1490, Unknown=0, NotChecked=0, Total=1980 [2020-10-27 22:55:36,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5525 states. [2020-10-27 22:55:37,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5525 to 5395. [2020-10-27 22:55:37,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5395 states. [2020-10-27 22:55:37,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5395 states to 5395 states and 7333 transitions. [2020-10-27 22:55:37,361 INFO L78 Accepts]: Start accepts. Automaton has 5395 states and 7333 transitions. Word has length 109 [2020-10-27 22:55:37,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:55:37,362 INFO L481 AbstractCegarLoop]: Abstraction has 5395 states and 7333 transitions. [2020-10-27 22:55:37,362 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-27 22:55:37,362 INFO L276 IsEmpty]: Start isEmpty. Operand 5395 states and 7333 transitions. [2020-10-27 22:55:37,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-27 22:55:37,365 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:55:37,365 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:55:37,365 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 22:55:37,366 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:55:37,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:55:37,366 INFO L82 PathProgramCache]: Analyzing trace with hash 2032448206, now seen corresponding path program 1 times [2020-10-27 22:55:37,366 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:55:37,367 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [247221509] [2020-10-27 22:55:37,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:55:37,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:37,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:37,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:37,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:37,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:42,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:42,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-27 22:55:42,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 22:55:42,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 22:55:42,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:42,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 22:55:42,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-27 22:55:42,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-27 22:55:42,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:42,560 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-27 22:55:42,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:55:42,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:42,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:42,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:42,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:55:42,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:42,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 22:55:42,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:42,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:55:42,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:42,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:55:42,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:42,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:55:42,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:42,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:42,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:42,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 22:55:42,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:42,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 22:55:42,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:42,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:55:42,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:42,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 22:55:42,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:42,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 22:55:42,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:42,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:42,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:42,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:55:42,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:42,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:55:42,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:42,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:55:42,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:42,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:55:42,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:42,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-27 22:55:42,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:42,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:42,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:42,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:55:42,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:42,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:55:42,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:42,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:55:42,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:42,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:55:42,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:42,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-27 22:55:42,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:42,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:42,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:42,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:55:42,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:42,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 22:55:42,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:42,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:55:42,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:55:42,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 22:55:42,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:42,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-27 22:55:42,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:42,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:42,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:42,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:55:42,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:42,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:55:42,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:42,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:55:42,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:42,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:55:42,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:42,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-27 22:55:42,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:42,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:42,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:42,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:55:42,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:42,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:55:42,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:42,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 22:55:42,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:42,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:55:42,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:42,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-27 22:55:42,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:42,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:42,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:42,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:55:42,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:42,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:55:42,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:42,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:55:42,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:42,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:55:42,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:42,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-27 22:55:42,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:42,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:42,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:42,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:55:42,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:42,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 22:55:42,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:42,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:55:42,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:55:42,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 22:55:42,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:42,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-27 22:55:42,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:42,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:42,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:42,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:55:42,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:42,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:55:42,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:42,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 22:55:42,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:42,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:55:42,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:42,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-27 22:55:42,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:42,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:42,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:42,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:55:42,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:42,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 22:55:42,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:42,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:55:42,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:55:42,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 22:55:42,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:42,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-27 22:55:42,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:42,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:42,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:42,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:55:42,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:42,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:55:42,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:42,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:55:42,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 22:55:42,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 22:55:42,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:42,896 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 12 proven. 12 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-27 22:55:42,896 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [247221509] [2020-10-27 22:55:42,896 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:55:42,896 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-27 22:55:42,897 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205351340] [2020-10-27 22:55:42,897 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-27 22:55:42,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:55:42,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-27 22:55:42,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2020-10-27 22:55:42,898 INFO L87 Difference]: Start difference. First operand 5395 states and 7333 transitions. Second operand 15 states. [2020-10-27 22:55:43,265 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 112 [2020-10-27 22:55:43,486 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-27 22:55:44,205 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-27 22:55:45,402 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 112 [2020-10-27 22:55:45,978 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-27 22:55:48,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:55:48,233 INFO L93 Difference]: Finished difference Result 10616 states and 14498 transitions. [2020-10-27 22:55:48,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-27 22:55:48,234 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 109 [2020-10-27 22:55:48,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:55:48,277 INFO L225 Difference]: With dead ends: 10616 [2020-10-27 22:55:48,278 INFO L226 Difference]: Without dead ends: 6478 [2020-10-27 22:55:48,295 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 439 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=490, Invalid=1490, Unknown=0, NotChecked=0, Total=1980 [2020-10-27 22:55:48,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6478 states. [2020-10-27 22:55:49,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6478 to 6228. [2020-10-27 22:55:49,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6228 states. [2020-10-27 22:55:49,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6228 states to 6228 states and 8464 transitions. [2020-10-27 22:55:49,027 INFO L78 Accepts]: Start accepts. Automaton has 6228 states and 8464 transitions. Word has length 109 [2020-10-27 22:55:49,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:55:49,027 INFO L481 AbstractCegarLoop]: Abstraction has 6228 states and 8464 transitions. [2020-10-27 22:55:49,028 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-27 22:55:49,028 INFO L276 IsEmpty]: Start isEmpty. Operand 6228 states and 8464 transitions. [2020-10-27 22:55:49,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-27 22:55:49,031 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:55:49,032 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:55:49,032 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 22:55:49,032 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:55:49,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:55:49,033 INFO L82 PathProgramCache]: Analyzing trace with hash 1237599514, now seen corresponding path program 1 times [2020-10-27 22:55:49,033 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:55:49,033 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1192768358] [2020-10-27 22:55:49,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:55:49,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:49,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:49,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:49,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:49,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:49,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:50,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:54,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:54,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-27 22:55:54,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 22:55:54,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 22:55:54,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:54,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:55:54,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-27 22:55:54,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-27 22:55:54,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:54,225 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-27 22:55:54,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:55:54,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:54,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:54,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:54,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:55:54,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:54,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:55:54,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:54,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:55:54,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:54,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:55:54,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:54,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:55:54,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:54,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:54,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:54,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 22:55:54,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:54,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:55:54,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:54,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:55:54,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:54,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:55:54,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:54,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 22:55:54,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:54,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:54,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:54,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:55:54,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:54,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 22:55:54,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:54,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:55:54,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:54,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:55:54,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:54,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-27 22:55:54,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:54,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:54,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:54,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:55:54,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:54,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:55:54,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:54,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:55:54,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:54,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:55:54,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:54,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-27 22:55:54,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:54,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:54,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:54,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:55:54,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:54,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:55:54,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:54,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:55:54,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:54,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:55:54,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:54,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-27 22:55:54,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:54,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:54,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:54,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:55:54,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:54,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 22:55:54,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:54,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:55:54,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:54,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 22:55:54,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:54,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-27 22:55:54,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:54,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:54,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:54,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:55:54,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:54,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:55:54,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:54,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:55:54,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:54,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:55:54,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:54,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-27 22:55:54,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:54,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:54,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:54,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:55:54,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:54,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:55:54,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:54,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:55:54,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:54,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:55:54,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:54,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-27 22:55:54,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:54,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:54,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:54,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:55:54,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:54,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 22:55:54,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:54,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:55:54,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:54,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:55:54,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:54,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-27 22:55:54,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:54,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:54,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:54,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:55:54,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:54,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:55:54,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:54,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:55:54,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:54,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:55:54,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:54,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-27 22:55:54,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:54,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:54,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:54,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:55:54,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:54,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 22:55:54,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:54,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:55:54,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:55:54,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 22:55:54,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:54,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-27 22:55:54,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:54,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:54,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:54,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:55:54,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:54,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:55:54,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:54,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:55:54,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:55:54,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:55:54,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:54,530 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-27 22:55:54,530 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1192768358] [2020-10-27 22:55:54,531 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:55:54,531 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 22:55:54,531 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589733628] [2020-10-27 22:55:54,531 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 22:55:54,532 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:55:54,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 22:55:54,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-27 22:55:54,532 INFO L87 Difference]: Start difference. First operand 6228 states and 8464 transitions. Second operand 9 states. [2020-10-27 22:55:54,837 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-27 22:55:55,367 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-10-27 22:55:56,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:55:56,707 INFO L93 Difference]: Finished difference Result 18056 states and 24811 transitions. [2020-10-27 22:55:56,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 22:55:56,707 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 109 [2020-10-27 22:55:56,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:55:56,768 INFO L225 Difference]: With dead ends: 18056 [2020-10-27 22:55:56,769 INFO L226 Difference]: Without dead ends: 11899 [2020-10-27 22:55:56,791 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-10-27 22:55:56,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11899 states. [2020-10-27 22:55:58,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11899 to 11296. [2020-10-27 22:55:58,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11296 states. [2020-10-27 22:55:58,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11296 states to 11296 states and 15118 transitions. [2020-10-27 22:55:58,195 INFO L78 Accepts]: Start accepts. Automaton has 11296 states and 15118 transitions. Word has length 109 [2020-10-27 22:55:58,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:55:58,196 INFO L481 AbstractCegarLoop]: Abstraction has 11296 states and 15118 transitions. [2020-10-27 22:55:58,196 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 22:55:58,196 INFO L276 IsEmpty]: Start isEmpty. Operand 11296 states and 15118 transitions. [2020-10-27 22:55:58,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-27 22:55:58,199 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:55:58,200 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:55:58,200 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 22:55:58,200 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:55:58,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:55:58,201 INFO L82 PathProgramCache]: Analyzing trace with hash -879182896, now seen corresponding path program 1 times [2020-10-27 22:55:58,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:55:58,201 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1019290897] [2020-10-27 22:55:58,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:55:58,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:58,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:58,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:58,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:59,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:59,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:00,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:03,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:03,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-27 22:56:03,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 22:56:03,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-27 22:56:03,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:03,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 22:56:03,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-27 22:56:03,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-27 22:56:03,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:03,421 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-27 22:56:03,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:56:03,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:03,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:03,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:03,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:56:03,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:03,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 22:56:03,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:03,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:56:03,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:56:03,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:56:03,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:03,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:56:03,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:03,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:03,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:03,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 22:56:03,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:03,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 22:56:03,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:03,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 22:56:03,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:56:03,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 22:56:03,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:03,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 22:56:03,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:03,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:03,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:03,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:56:03,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:03,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:56:03,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:03,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:56:03,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:56:03,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:56:03,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:03,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-27 22:56:03,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:03,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:03,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:03,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:56:03,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:03,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 22:56:03,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:03,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:56:03,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:56:03,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:56:03,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:03,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-27 22:56:03,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:03,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:03,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:03,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:56:03,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:03,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 22:56:03,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:03,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:56:03,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:56:03,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 22:56:03,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:03,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-27 22:56:03,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:03,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:03,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:03,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:56:03,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:03,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 22:56:03,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:03,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:56:03,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:56:03,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 22:56:03,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:03,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-27 22:56:03,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:03,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:03,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:03,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:56:03,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:03,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:56:03,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:03,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:56:03,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:56:03,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:56:03,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:03,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-27 22:56:03,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:03,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:03,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:03,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:56:03,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:03,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:56:03,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:03,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:56:03,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:56:03,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:56:03,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:03,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-27 22:56:03,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:03,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:03,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:03,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:56:03,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:03,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 22:56:03,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:03,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 22:56:03,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:56:03,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:56:03,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:03,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-27 22:56:03,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:03,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:03,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:03,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:56:03,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:03,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 22:56:03,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:03,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:56:03,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:56:03,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 22:56:03,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:03,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-27 22:56:03,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:03,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:03,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:03,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:56:03,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:03,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 22:56:03,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:03,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:56:03,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:56:03,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 22:56:03,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:03,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-27 22:56:03,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:03,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:03,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:03,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:56:03,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:03,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:56:03,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:03,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:56:03,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 22:56:03,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 22:56:03,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:03,897 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 14 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-27 22:56:03,898 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1019290897] [2020-10-27 22:56:03,898 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:56:03,898 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-27 22:56:03,898 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58539881] [2020-10-27 22:56:03,899 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-27 22:56:03,899 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:56:03,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-27 22:56:03,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2020-10-27 22:56:03,900 INFO L87 Difference]: Start difference. First operand 11296 states and 15118 transitions. Second operand 16 states. [2020-10-27 22:56:04,069 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-27 22:56:04,237 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-10-27 22:56:04,399 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-27 22:56:05,492 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-27 22:56:05,693 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-27 22:56:05,863 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-27 22:56:09,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:56:09,553 INFO L93 Difference]: Finished difference Result 21206 states and 29651 transitions. [2020-10-27 22:56:09,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-27 22:56:09,554 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 109 [2020-10-27 22:56:09,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:56:09,643 INFO L225 Difference]: With dead ends: 21206 [2020-10-27 22:56:09,643 INFO L226 Difference]: Without dead ends: 17594 [2020-10-27 22:56:09,663 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 654 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=610, Invalid=1940, Unknown=0, NotChecked=0, Total=2550 [2020-10-27 22:56:09,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17594 states. [2020-10-27 22:56:11,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17594 to 15902. [2020-10-27 22:56:11,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15902 states. [2020-10-27 22:56:11,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15902 states to 15902 states and 21264 transitions. [2020-10-27 22:56:11,525 INFO L78 Accepts]: Start accepts. Automaton has 15902 states and 21264 transitions. Word has length 109 [2020-10-27 22:56:11,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:56:11,525 INFO L481 AbstractCegarLoop]: Abstraction has 15902 states and 21264 transitions. [2020-10-27 22:56:11,526 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-27 22:56:11,526 INFO L276 IsEmpty]: Start isEmpty. Operand 15902 states and 21264 transitions. [2020-10-27 22:56:11,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-27 22:56:11,530 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:56:11,531 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:56:11,531 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 22:56:11,531 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:56:11,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:56:11,532 INFO L82 PathProgramCache]: Analyzing trace with hash -1085834940, now seen corresponding path program 1 times [2020-10-27 22:56:11,532 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:56:11,532 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1293053158] [2020-10-27 22:56:11,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:56:11,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:11,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:11,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:11,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:11,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:12,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:16,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:16,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-27 22:56:16,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 22:56:16,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 22:56:16,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:16,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 22:56:16,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 22:56:16,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-27 22:56:16,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:16,742 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-27 22:56:16,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:56:16,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:16,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:16,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:16,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:56:16,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:16,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 22:56:16,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:16,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:56:16,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:56:16,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:56:16,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:16,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:56:16,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:16,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:16,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:16,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 22:56:16,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:16,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 22:56:16,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:16,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:56:16,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:56:16,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 22:56:16,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:16,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 22:56:16,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:16,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:16,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:16,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:56:16,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:16,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:56:16,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:16,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:56:16,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:56:16,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:56:16,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:16,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-27 22:56:16,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:16,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:16,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:16,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:56:16,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:16,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 22:56:16,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:16,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:56:16,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:56:16,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 22:56:16,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:16,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-27 22:56:16,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:16,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:16,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:16,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:56:16,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:16,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 22:56:16,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:16,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:56:16,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:56:16,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:56:16,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:16,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-27 22:56:16,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:16,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:16,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:16,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:56:16,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:16,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:56:16,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:16,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:56:16,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:56:16,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:56:16,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:16,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-27 22:56:16,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:16,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:16,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:16,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:56:17,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:17,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:56:17,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:17,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:56:17,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:56:17,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:56:17,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:17,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-27 22:56:17,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:17,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:17,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:17,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:56:17,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:17,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:56:17,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:17,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:56:17,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:56:17,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:56:17,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:17,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-27 22:56:17,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:17,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:17,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:17,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:56:17,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:17,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 22:56:17,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:17,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 22:56:17,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:56:17,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 22:56:17,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:17,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-27 22:56:17,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:17,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:17,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:17,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:56:17,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:17,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:56:17,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:17,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:56:17,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:56:17,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:56:17,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:17,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-27 22:56:17,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:17,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:17,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:17,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:56:17,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:17,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:56:17,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:17,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:56:17,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:56:17,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:56:17,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:17,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-27 22:56:17,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:17,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:17,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:17,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:17,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:56:17,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:56:17,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:56:17,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:17,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:56:17,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 22:56:17,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:56:17,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:17,151 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-27 22:56:17,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1293053158] [2020-10-27 22:56:17,155 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:56:17,155 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-27 22:56:17,155 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345605595] [2020-10-27 22:56:17,156 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 22:56:17,156 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:56:17,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 22:56:17,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-27 22:56:17,156 INFO L87 Difference]: Start difference. First operand 15902 states and 21264 transitions. Second operand 11 states. [2020-10-27 22:56:17,325 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-27 22:56:18,178 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-27 22:56:19,769 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-27 22:56:21,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:56:21,503 INFO L93 Difference]: Finished difference Result 35990 states and 48375 transitions. [2020-10-27 22:56:21,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-27 22:56:21,503 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 110 [2020-10-27 22:56:21,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:56:21,585 INFO L225 Difference]: With dead ends: 35990 [2020-10-27 22:56:21,585 INFO L226 Difference]: Without dead ends: 21543 [2020-10-27 22:56:21,628 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=171, Invalid=585, Unknown=0, NotChecked=0, Total=756 [2020-10-27 22:56:21,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21543 states. [2020-10-27 22:56:23,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21543 to 21534. [2020-10-27 22:56:23,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21534 states. [2020-10-27 22:56:23,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21534 states to 21534 states and 28611 transitions. [2020-10-27 22:56:23,765 INFO L78 Accepts]: Start accepts. Automaton has 21534 states and 28611 transitions. Word has length 110 [2020-10-27 22:56:23,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:56:23,765 INFO L481 AbstractCegarLoop]: Abstraction has 21534 states and 28611 transitions. [2020-10-27 22:56:23,765 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 22:56:23,766 INFO L276 IsEmpty]: Start isEmpty. Operand 21534 states and 28611 transitions. [2020-10-27 22:56:23,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-27 22:56:23,769 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:56:23,769 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:56:23,770 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 22:56:23,770 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:56:23,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:56:23,770 INFO L82 PathProgramCache]: Analyzing trace with hash 1529784856, now seen corresponding path program 1 times [2020-10-27 22:56:23,770 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:56:23,771 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2020690843] [2020-10-27 22:56:23,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:56:23,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:23,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:23,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:24,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:24,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:28,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:28,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-27 22:56:28,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 22:56:28,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 22:56:28,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:28,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 22:56:28,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-27 22:56:28,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-27 22:56:28,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:29,042 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-27 22:56:29,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:56:29,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:29,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:29,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:29,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:56:29,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:29,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 22:56:29,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:29,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:56:29,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:56:29,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:56:29,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:29,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:56:29,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:29,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:29,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:29,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 22:56:29,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:29,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 22:56:29,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:29,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:56:29,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:56:29,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 22:56:29,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:29,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 22:56:29,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:29,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:29,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:29,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:56:29,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:29,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 22:56:29,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:29,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:56:29,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:56:29,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:56:29,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:29,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-27 22:56:29,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:29,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:29,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:29,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:56:29,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:29,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:56:29,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:29,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:56:29,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:56:29,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:56:29,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:29,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-27 22:56:29,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:29,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:29,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:29,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:56:29,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:29,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 22:56:29,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:29,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 22:56:29,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:56:29,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:56:29,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:29,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-27 22:56:29,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:29,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:29,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:29,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:56:29,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:29,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 22:56:29,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:29,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 22:56:29,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:56:29,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 22:56:29,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:29,489 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 38 [2020-10-27 22:56:29,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-27 22:56:29,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:29,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:29,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:29,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:56:29,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:29,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:56:29,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:29,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:56:29,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:56:29,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:56:29,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:29,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-27 22:56:29,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:29,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:29,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:29,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:56:29,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:29,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:56:29,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:29,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:56:29,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:56:29,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:56:29,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:29,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-27 22:56:29,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:29,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:29,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:29,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:56:29,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:29,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 22:56:29,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:29,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 22:56:29,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:56:29,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 22:56:29,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:29,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-27 22:56:29,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:29,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:29,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:29,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:56:29,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:29,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:56:29,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:29,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:56:29,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:56:29,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:56:29,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:29,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-27 22:56:29,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:29,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:29,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:29,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:56:29,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:29,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 22:56:29,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:29,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 22:56:29,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:56:29,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 22:56:29,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:29,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-27 22:56:29,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:29,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:29,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:29,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 22:56:29,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:29,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:56:29,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:29,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:56:29,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-27 22:56:29,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:56:29,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:29,780 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 9 proven. 9 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-27 22:56:29,781 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2020690843] [2020-10-27 22:56:29,781 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:56:29,781 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-27 22:56:29,781 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183300457] [2020-10-27 22:56:29,782 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-27 22:56:29,782 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:56:29,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-27 22:56:29,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=369, Unknown=0, NotChecked=0, Total=420 [2020-10-27 22:56:29,783 INFO L87 Difference]: Start difference. First operand 21534 states and 28611 transitions. Second operand 21 states. [2020-10-27 22:56:30,085 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2020-10-27 22:56:30,296 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-27 22:56:30,604 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-27 22:56:30,954 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2020-10-27 22:56:31,782 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2020-10-27 22:56:32,047 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-27 22:56:32,207 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 58 [2020-10-27 22:56:32,807 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-27 22:56:33,636 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 22:56:35,549 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-27 22:56:35,806 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-10-27 22:56:35,988 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 56 [2020-10-27 22:56:39,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:56:39,658 INFO L93 Difference]: Finished difference Result 64221 states and 85682 transitions. [2020-10-27 22:56:39,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2020-10-27 22:56:39,658 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 111 [2020-10-27 22:56:39,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:56:39,887 INFO L225 Difference]: With dead ends: 64221 [2020-10-27 22:56:39,887 INFO L226 Difference]: Without dead ends: 50786 [2020-10-27 22:56:39,938 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1205 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=658, Invalid=3898, Unknown=0, NotChecked=0, Total=4556 [2020-10-27 22:56:39,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50786 states. [2020-10-27 22:56:45,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50786 to 48277. [2020-10-27 22:56:45,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48277 states. [2020-10-27 22:56:45,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48277 states to 48277 states and 64483 transitions. [2020-10-27 22:56:45,303 INFO L78 Accepts]: Start accepts. Automaton has 48277 states and 64483 transitions. Word has length 111 [2020-10-27 22:56:45,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:56:45,304 INFO L481 AbstractCegarLoop]: Abstraction has 48277 states and 64483 transitions. [2020-10-27 22:56:45,304 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-27 22:56:45,304 INFO L276 IsEmpty]: Start isEmpty. Operand 48277 states and 64483 transitions. [2020-10-27 22:56:45,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-27 22:56:45,309 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:56:45,309 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:56:45,309 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-27 22:56:45,309 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:56:45,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:56:45,310 INFO L82 PathProgramCache]: Analyzing trace with hash 37726348, now seen corresponding path program 1 times [2020-10-27 22:56:45,310 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:56:45,310 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [339193709] [2020-10-27 22:56:45,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:56:45,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:45,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:45,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:45,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:45,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:50,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:50,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-27 22:56:50,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 22:56:50,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 22:56:50,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:50,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 22:56:50,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-27 22:56:50,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-27 22:56:50,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:50,564 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-27 22:56:50,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:56:50,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:50,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:50,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:50,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:56:50,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:50,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:56:50,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:50,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:56:50,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:56:50,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:56:50,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:50,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:56:50,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:50,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:50,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:50,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 22:56:50,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:50,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:56:50,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:50,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:56:50,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:56:50,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:56:50,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:50,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 22:56:50,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:50,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:50,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:50,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:56:50,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:50,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 22:56:50,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:50,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:56:50,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:56:50,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:56:50,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:50,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-27 22:56:50,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:50,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:50,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:50,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:56:50,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:50,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 22:56:50,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:50,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 22:56:50,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:56:50,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:56:50,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:50,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-27 22:56:50,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:50,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:50,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:50,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:56:50,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:50,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 22:56:50,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:50,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 22:56:50,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:56:50,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 22:56:50,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:50,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-27 22:56:50,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:50,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:50,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:50,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:56:50,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:50,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:56:50,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:50,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:56:50,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:56:50,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:56:50,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:50,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-27 22:56:50,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:50,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:50,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:50,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:56:50,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:50,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:56:50,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:50,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:56:50,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:56:50,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:56:50,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:50,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-27 22:56:50,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:50,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:50,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:50,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:56:50,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:50,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:56:50,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:50,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:56:50,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:56:50,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:56:50,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:50,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-27 22:56:50,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:50,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:50,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:50,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:56:50,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:50,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:56:50,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:50,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:56:50,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:56:50,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:56:50,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:50,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-27 22:56:50,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:50,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:50,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:50,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:56:50,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:50,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 22:56:50,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:50,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 22:56:50,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:56:50,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 22:56:50,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:51,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-27 22:56:51,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:51,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:51,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:51,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:56:51,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:51,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:56:51,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:51,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 22:56:51,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:56:51,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 22:56:51,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:51,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-27 22:56:51,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:51,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:51,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:51,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 22:56:51,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:51,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:56:51,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:51,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:56:51,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-27 22:56:51,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:56:51,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:51,142 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 9 proven. 9 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-27 22:56:51,142 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [339193709] [2020-10-27 22:56:51,142 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:56:51,142 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-27 22:56:51,142 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138139489] [2020-10-27 22:56:51,145 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-27 22:56:51,145 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:56:51,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-27 22:56:51,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=369, Unknown=0, NotChecked=0, Total=420 [2020-10-27 22:56:51,146 INFO L87 Difference]: Start difference. First operand 48277 states and 64483 transitions. Second operand 21 states. [2020-10-27 22:56:51,429 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-27 22:56:51,636 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-27 22:56:51,893 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-27 22:56:52,281 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2020-10-27 22:56:52,603 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-27 22:56:52,952 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-27 22:56:53,111 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 57 [2020-10-27 22:56:53,472 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 22:56:54,266 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-27 22:56:55,158 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 22:56:55,536 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-10-27 22:56:56,387 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-27 22:56:56,681 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 22:56:58,784 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-10-27 22:56:59,026 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-27 22:57:07,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:57:07,497 INFO L93 Difference]: Finished difference Result 149161 states and 200911 transitions. [2020-10-27 22:57:07,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2020-10-27 22:57:07,498 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 111 [2020-10-27 22:57:07,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:57:08,337 INFO L225 Difference]: With dead ends: 149161 [2020-10-27 22:57:08,337 INFO L226 Difference]: Without dead ends: 120612 [2020-10-27 22:57:08,423 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2180 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=987, Invalid=6153, Unknown=0, NotChecked=0, Total=7140 [2020-10-27 22:57:08,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120612 states. [2020-10-27 22:57:19,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120612 to 113848. [2020-10-27 22:57:19,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113848 states. [2020-10-27 22:57:19,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113848 states to 113848 states and 154452 transitions. [2020-10-27 22:57:19,955 INFO L78 Accepts]: Start accepts. Automaton has 113848 states and 154452 transitions. Word has length 111 [2020-10-27 22:57:19,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:57:19,956 INFO L481 AbstractCegarLoop]: Abstraction has 113848 states and 154452 transitions. [2020-10-27 22:57:19,956 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-27 22:57:19,956 INFO L276 IsEmpty]: Start isEmpty. Operand 113848 states and 154452 transitions. [2020-10-27 22:57:19,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-27 22:57:19,963 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:57:19,963 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:57:19,963 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-27 22:57:19,963 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:57:19,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:57:19,964 INFO L82 PathProgramCache]: Analyzing trace with hash -1761880986, now seen corresponding path program 1 times [2020-10-27 22:57:19,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:57:19,964 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1266706574] [2020-10-27 22:57:19,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:57:19,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:57:20,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:20,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:20,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:20,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:21,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:23,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:24,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:57:24,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-27 22:57:24,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 22:57:24,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 22:57:24,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:57:24,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 22:57:24,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-27 22:57:24,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-27 22:57:24,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:57:25,221 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-27 22:57:25,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:57:25,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:57:25,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:25,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:57:25,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:57:25,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:57:25,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 22:57:25,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:57:25,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:57:25,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:57:25,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:57:25,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:57:25,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:57:25,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:57:25,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:25,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:57:25,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 22:57:25,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:57:25,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:57:25,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:57:25,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 22:57:25,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:57:25,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-27 22:57:25,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:57:25,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 22:57:25,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:57:25,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:25,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:57:25,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:57:25,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:57:25,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 22:57:25,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:57:25,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:57:25,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:57:25,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:57:25,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:57:25,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-27 22:57:25,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:57:25,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:25,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:57:25,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:57:25,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:57:25,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:57:25,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:57:25,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:57:25,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:57:25,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:57:25,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:57:25,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-27 22:57:25,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:57:25,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:25,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:57:25,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:57:25,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:57:25,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 22:57:25,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:57:25,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 22:57:25,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:57:25,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:57:25,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:57:25,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-27 22:57:25,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:57:25,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:25,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:57:25,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:57:25,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:57:25,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 22:57:25,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:57:25,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 22:57:25,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:57:25,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 22:57:25,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:57:25,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-27 22:57:25,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:57:25,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:25,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:57:25,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:57:25,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:57:25,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:57:25,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:57:25,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:57:25,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:57:25,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:57:25,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:57:25,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-27 22:57:25,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:57:25,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:25,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:57:25,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:57:25,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:57:25,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:57:25,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:57:25,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:57:25,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:57:25,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:57:25,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:57:25,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-27 22:57:25,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:57:25,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:25,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:57:25,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:57:25,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:57:25,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 22:57:25,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:57:25,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 22:57:25,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:57:25,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 22:57:25,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:57:25,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-27 22:57:25,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:57:25,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:25,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:57:25,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:57:25,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:57:25,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:57:25,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:57:25,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:57:25,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:57:25,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:57:25,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:57:25,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-27 22:57:25,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:57:25,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:25,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:57:25,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:57:25,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:57:25,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 22:57:25,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:57:25,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 22:57:25,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:57:25,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 22:57:25,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:57:25,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-27 22:57:25,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:57:25,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:25,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:57:25,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:57:25,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:57:25,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 22:57:25,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:57:25,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:57:25,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:57:25,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:57:25,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:57:25,799 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 9 proven. 9 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-27 22:57:25,800 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1266706574] [2020-10-27 22:57:25,800 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:57:25,800 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-27 22:57:25,800 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212717284] [2020-10-27 22:57:25,800 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-27 22:57:25,801 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:57:25,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-27 22:57:25,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=407, Unknown=0, NotChecked=0, Total=462 [2020-10-27 22:57:25,802 INFO L87 Difference]: Start difference. First operand 113848 states and 154452 transitions. Second operand 22 states. [2020-10-27 22:57:26,038 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-27 22:57:26,252 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-27 22:57:26,570 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-27 22:57:26,910 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-10-27 22:57:27,537 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-27 22:57:27,979 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2020-10-27 22:57:28,188 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-27 22:57:28,375 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2020-10-27 22:57:29,065 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-27 22:57:29,985 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2020-10-27 22:57:30,777 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-27 22:57:30,974 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2020-10-27 22:57:31,166 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-27 22:57:31,674 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2020-10-27 22:57:32,143 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-10-27 22:57:32,343 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 22:57:32,639 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 60 [2020-10-27 22:57:33,312 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-27 22:57:34,361 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-10-27 22:57:34,985 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-27 22:57:35,487 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-27 22:57:35,695 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-10-27 22:57:35,876 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-27 22:57:36,054 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-27 22:57:36,214 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-10-27 22:57:37,243 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2020-10-27 22:57:37,416 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-27 22:57:47,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:57:47,333 INFO L93 Difference]: Finished difference Result 183272 states and 247573 transitions. [2020-10-27 22:57:47,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2020-10-27 22:57:47,333 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 111 [2020-10-27 22:57:47,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:57:48,450 INFO L225 Difference]: With dead ends: 183272 [2020-10-27 22:57:48,450 INFO L226 Difference]: Without dead ends: 137241 [2020-10-27 22:57:48,593 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4575 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=1785, Invalid=11555, Unknown=0, NotChecked=0, Total=13340 [2020-10-27 22:57:48,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137241 states.