/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=SHALLOWEST --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-reduced/pals_floodmax.3.2.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 04:52:31,496 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 04:52:31,499 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 04:52:31,550 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 04:52:31,551 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 04:52:31,558 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 04:52:31,560 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 04:52:31,564 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 04:52:31,576 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 04:52:31,581 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 04:52:31,583 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 04:52:31,584 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 04:52:31,584 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 04:52:31,588 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 04:52:31,590 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 04:52:31,591 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 04:52:31,592 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 04:52:31,596 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 04:52:31,604 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 04:52:31,611 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 04:52:31,615 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 04:52:31,616 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 04:52:31,618 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 04:52:31,620 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 04:52:31,625 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 04:52:31,626 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 04:52:31,628 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 04:52:31,629 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 04:52:31,630 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 04:52:31,633 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 04:52:31,633 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 04:52:31,634 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 04:52:31,635 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 04:52:31,636 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 04:52:31,637 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 04:52:31,637 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 04:52:31,638 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 04:52:31,639 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 04:52:31,639 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 04:52:31,640 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 04:52:31,640 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 04:52:31,645 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 04:52:31,698 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 04:52:31,698 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 04:52:31,702 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 04:52:31,703 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 04:52:31,703 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 04:52:31,703 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 04:52:31,703 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 04:52:31,704 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 04:52:31,704 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 04:52:31,704 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 04:52:31,705 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 04:52:31,705 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 04:52:31,706 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 04:52:31,706 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 04:52:31,706 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 04:52:31,706 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 04:52:31,706 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 04:52:31,707 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 04:52:31,707 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 04:52:31,707 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 04:52:31,707 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 04:52:31,707 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 04:52:31,708 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 04:52:31,708 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 04:52:31,708 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 04:52:31,708 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 04:52:31,708 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 04:52:31,708 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 04:52:31,709 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 04:52:31,709 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 04:52:32,106 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 04:52:32,157 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 04:52:32,161 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 04:52:32,162 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 04:52:32,163 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 04:52:32,164 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.2.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-10-27 04:52:32,237 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/852604f42/b35bdeaa16054bef9c095b90a79b673a/FLAGffe56555c [2020-10-27 04:52:32,904 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 04:52:32,905 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.2.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-10-27 04:52:32,925 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/852604f42/b35bdeaa16054bef9c095b90a79b673a/FLAGffe56555c [2020-10-27 04:52:33,190 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/852604f42/b35bdeaa16054bef9c095b90a79b673a [2020-10-27 04:52:33,193 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 04:52:33,201 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 04:52:33,206 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 04:52:33,206 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 04:52:33,211 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 04:52:33,212 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:52:33" (1/1) ... [2020-10-27 04:52:33,219 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59b6dff3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:52:33, skipping insertion in model container [2020-10-27 04:52:33,220 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:52:33" (1/1) ... [2020-10-27 04:52:33,229 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 04:52:33,308 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 04:52:33,783 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 04:52:33,800 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 04:52:33,959 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 04:52:33,985 INFO L208 MainTranslator]: Completed translation [2020-10-27 04:52:33,986 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:52:33 WrapperNode [2020-10-27 04:52:33,986 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 04:52:33,988 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 04:52:33,988 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 04:52:33,988 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 04:52:34,008 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:52:33" (1/1) ... [2020-10-27 04:52:34,009 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:52:33" (1/1) ... [2020-10-27 04:52:34,026 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:52:33" (1/1) ... [2020-10-27 04:52:34,026 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:52:33" (1/1) ... [2020-10-27 04:52:34,059 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:52:33" (1/1) ... [2020-10-27 04:52:34,088 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:52:33" (1/1) ... [2020-10-27 04:52:34,092 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:52:33" (1/1) ... [2020-10-27 04:52:34,107 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 04:52:34,108 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 04:52:34,108 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 04:52:34,108 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 04:52:34,109 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:52:33" (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 04:52:34,229 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 04:52:34,229 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 04:52:34,230 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 04:52:34,230 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 04:52:34,231 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 04:52:34,231 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 04:52:34,231 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 04:52:34,231 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 04:52:34,231 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 04:52:34,232 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 04:52:34,232 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 04:52:34,233 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 04:52:34,233 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 04:52:34,233 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 04:52:34,233 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 04:52:34,234 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 04:52:34,234 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 04:52:34,235 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 04:52:34,235 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 04:52:34,235 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 04:52:34,235 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 04:52:34,235 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 04:52:34,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 04:52:34,236 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 04:52:34,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 04:52:34,236 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 04:52:34,236 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 04:52:35,935 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 04:52:35,936 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 04:52:35,938 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:52:35 BoogieIcfgContainer [2020-10-27 04:52:35,938 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 04:52:35,941 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 04:52:35,941 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 04:52:35,945 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 04:52:35,945 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 04:52:33" (1/3) ... [2020-10-27 04:52:35,946 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e70a731 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:52:35, skipping insertion in model container [2020-10-27 04:52:35,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:52:33" (2/3) ... [2020-10-27 04:52:35,947 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e70a731 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:52:35, skipping insertion in model container [2020-10-27 04:52:35,947 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:52:35" (3/3) ... [2020-10-27 04:52:35,949 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.2.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-10-27 04:52:35,963 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 04:52:35,969 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 04:52:35,984 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 04:52:36,018 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 04:52:36,018 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 04:52:36,018 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 04:52:36,018 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 04:52:36,019 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 04:52:36,019 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 04:52:36,019 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 04:52:36,019 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 04:52:36,045 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states. [2020-10-27 04:52:36,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-27 04:52:36,060 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:52:36,061 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:52:36,061 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:52:36,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:52:36,068 INFO L82 PathProgramCache]: Analyzing trace with hash 1018272144, now seen corresponding path program 1 times [2020-10-27 04:52:36,079 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:52:36,079 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [695395946] [2020-10-27 04:52:36,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:52:36,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:52:36,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:52:37,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:52:37,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:52:37,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:52:37,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:52:37,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:52:41,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:52:41,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:52:41,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:52:41,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-27 04:52:41,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 04:52:41,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-27 04:52:41,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:52:41,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:52:41,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:52:41,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-27 04:52:41,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 04:52:42,570 WARN L193 SmtUtils]: Spent 599.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-27 04:52:42,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:52:42,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:52:42,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:52:42,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:52:42,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:52:42,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:52:42,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 04:52:42,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:52:42,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:52:42,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:52:42,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:52:42,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:52:42,707 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 04:52:42,708 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [695395946] [2020-10-27 04:52:42,710 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:52:42,711 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:52:42,712 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529241614] [2020-10-27 04:52:42,720 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:52:42,721 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:52:42,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:52:42,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:52:42,743 INFO L87 Difference]: Start difference. First operand 246 states. Second operand 5 states. [2020-10-27 04:52:45,563 WARN L193 SmtUtils]: Spent 399.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-27 04:52:46,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:52:46,594 INFO L93 Difference]: Finished difference Result 610 states and 1086 transitions. [2020-10-27 04:52:46,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 04:52:46,596 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 96 [2020-10-27 04:52:46,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:52:46,614 INFO L225 Difference]: With dead ends: 610 [2020-10-27 04:52:46,615 INFO L226 Difference]: Without dead ends: 448 [2020-10-27 04:52:46,620 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 04:52:46,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2020-10-27 04:52:46,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 425. [2020-10-27 04:52:46,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 425 states. [2020-10-27 04:52:46,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 620 transitions. [2020-10-27 04:52:46,730 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 620 transitions. Word has length 96 [2020-10-27 04:52:46,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:52:46,731 INFO L481 AbstractCegarLoop]: Abstraction has 425 states and 620 transitions. [2020-10-27 04:52:46,732 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:52:46,732 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 620 transitions. [2020-10-27 04:52:46,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-27 04:52:46,737 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:52:46,738 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:52:46,738 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 04:52:46,738 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:52:46,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:52:46,739 INFO L82 PathProgramCache]: Analyzing trace with hash 597184271, now seen corresponding path program 1 times [2020-10-27 04:52:46,740 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:52:46,740 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1563044985] [2020-10-27 04:52:46,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:52:46,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:52:46,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:52:46,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:52:46,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:52:47,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:52:47,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:52:47,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:52:48,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:52:51,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:52:51,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-27 04:52:51,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 04:52:51,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 04:52:51,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:52:51,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:52:51,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:52:51,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-27 04:52:51,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-27 04:52:52,235 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-27 04:52:52,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:52:52,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:52:52,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:52:52,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:52:52,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:52:52,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:52:52,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 04:52:52,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:52:52,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:52:52,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:52:52,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:52:52,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:52:52,299 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 04:52:52,300 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1563044985] [2020-10-27 04:52:52,300 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:52:52,300 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:52:52,302 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317275483] [2020-10-27 04:52:52,304 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:52:52,304 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:52:52,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:52:52,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:52:52,315 INFO L87 Difference]: Start difference. First operand 425 states and 620 transitions. Second operand 5 states. [2020-10-27 04:52:53,999 WARN L193 SmtUtils]: Spent 431.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-27 04:52:54,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:52:54,932 INFO L93 Difference]: Finished difference Result 1232 states and 1795 transitions. [2020-10-27 04:52:54,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 04:52:54,936 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 97 [2020-10-27 04:52:54,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:52:54,945 INFO L225 Difference]: With dead ends: 1232 [2020-10-27 04:52:54,945 INFO L226 Difference]: Without dead ends: 818 [2020-10-27 04:52:54,955 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 04:52:54,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 818 states. [2020-10-27 04:52:55,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 818 to 804. [2020-10-27 04:52:55,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 804 states. [2020-10-27 04:52:55,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 804 states to 804 states and 1163 transitions. [2020-10-27 04:52:55,075 INFO L78 Accepts]: Start accepts. Automaton has 804 states and 1163 transitions. Word has length 97 [2020-10-27 04:52:55,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:52:55,076 INFO L481 AbstractCegarLoop]: Abstraction has 804 states and 1163 transitions. [2020-10-27 04:52:55,076 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:52:55,076 INFO L276 IsEmpty]: Start isEmpty. Operand 804 states and 1163 transitions. [2020-10-27 04:52:55,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-27 04:52:55,083 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:52:55,083 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:52:55,083 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 04:52:55,083 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:52:55,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:52:55,084 INFO L82 PathProgramCache]: Analyzing trace with hash -862870317, now seen corresponding path program 1 times [2020-10-27 04:52:55,084 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:52:55,085 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2073347903] [2020-10-27 04:52:55,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:52:55,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:52:55,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:52:55,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:52:55,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:52:55,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:52:55,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:52:55,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:52:56,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:52:57,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:00,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:53:00,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-27 04:53:00,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 04:53:00,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-27 04:53:00,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:53:00,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:53:00,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:53:00,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-27 04:53:00,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:53:00,519 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-27 04:53:00,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:53:00,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:53:00,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:00,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:53:00,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:53:00,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:53:00,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 04:53:00,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:53:00,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:53:00,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:53:00,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:53:00,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:53:00,576 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 04:53:00,576 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2073347903] [2020-10-27 04:53:00,577 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:53:00,577 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:53:00,577 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107267460] [2020-10-27 04:53:00,578 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:53:00,578 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:53:00,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:53:00,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:53:00,579 INFO L87 Difference]: Start difference. First operand 804 states and 1163 transitions. Second operand 5 states. [2020-10-27 04:53:02,146 WARN L193 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-27 04:53:03,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:53:03,075 INFO L93 Difference]: Finished difference Result 2298 states and 3308 transitions. [2020-10-27 04:53:03,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 04:53:03,076 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 98 [2020-10-27 04:53:03,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:53:03,084 INFO L225 Difference]: With dead ends: 2298 [2020-10-27 04:53:03,085 INFO L226 Difference]: Without dead ends: 1523 [2020-10-27 04:53:03,087 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 04:53:03,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1523 states. [2020-10-27 04:53:03,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1523 to 1511. [2020-10-27 04:53:03,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1511 states. [2020-10-27 04:53:03,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1511 states to 1511 states and 2156 transitions. [2020-10-27 04:53:03,200 INFO L78 Accepts]: Start accepts. Automaton has 1511 states and 2156 transitions. Word has length 98 [2020-10-27 04:53:03,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:53:03,201 INFO L481 AbstractCegarLoop]: Abstraction has 1511 states and 2156 transitions. [2020-10-27 04:53:03,201 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:53:03,201 INFO L276 IsEmpty]: Start isEmpty. Operand 1511 states and 2156 transitions. [2020-10-27 04:53:03,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-27 04:53:03,206 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:53:03,206 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:53:03,206 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 04:53:03,206 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:53:03,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:53:03,207 INFO L82 PathProgramCache]: Analyzing trace with hash -1361958515, now seen corresponding path program 1 times [2020-10-27 04:53:03,207 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:53:03,208 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1975291753] [2020-10-27 04:53:03,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:53:03,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:53:03,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:03,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:03,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:03,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:03,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:03,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:04,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:05,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:05,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:07,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:07,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:08,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:08,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:53:08,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-27 04:53:08,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 04:53:08,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-27 04:53:08,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:53:08,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:53:08,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:53:08,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-27 04:53:08,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:53:08,755 WARN L193 SmtUtils]: Spent 387.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-27 04:53:08,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:53:08,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:53:08,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:08,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:53:08,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:53:08,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:53:08,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 04:53:08,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:53:08,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:53:08,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:53:08,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:53:08,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 04:53:08,822 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 04:53:08,823 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1975291753] [2020-10-27 04:53:08,823 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:53:08,823 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:53:08,824 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833115219] [2020-10-27 04:53:08,825 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:53:08,825 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:53:08,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:53:08,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:53:08,827 INFO L87 Difference]: Start difference. First operand 1511 states and 2156 transitions. Second operand 5 states. [2020-10-27 04:53:10,457 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-27 04:53:11,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:53:11,384 INFO L93 Difference]: Finished difference Result 4347 states and 6180 transitions. [2020-10-27 04:53:11,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 04:53:11,385 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 99 [2020-10-27 04:53:11,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:53:11,400 INFO L225 Difference]: With dead ends: 4347 [2020-10-27 04:53:11,401 INFO L226 Difference]: Without dead ends: 2900 [2020-10-27 04:53:11,405 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 04:53:11,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2900 states. [2020-10-27 04:53:11,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2900 to 2851. [2020-10-27 04:53:11,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2851 states. [2020-10-27 04:53:11,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2851 states to 2851 states and 4014 transitions. [2020-10-27 04:53:11,589 INFO L78 Accepts]: Start accepts. Automaton has 2851 states and 4014 transitions. Word has length 99 [2020-10-27 04:53:11,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:53:11,591 INFO L481 AbstractCegarLoop]: Abstraction has 2851 states and 4014 transitions. [2020-10-27 04:53:11,592 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:53:11,592 INFO L276 IsEmpty]: Start isEmpty. Operand 2851 states and 4014 transitions. [2020-10-27 04:53:11,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-27 04:53:11,597 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:53:11,597 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:53:11,597 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 04:53:11,598 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:53:11,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:53:11,598 INFO L82 PathProgramCache]: Analyzing trace with hash 1504069394, now seen corresponding path program 1 times [2020-10-27 04:53:11,598 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:53:11,599 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [73899916] [2020-10-27 04:53:11,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:53:11,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:53:11,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:11,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:11,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:11,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:11,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:11,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:14,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:16,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:53:16,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-27 04:53:16,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 04:53:16,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 04:53:16,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:53:16,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:53:16,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:53:16,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-27 04:53:16,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:53:17,070 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-27 04:53:17,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:53:17,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:53:17,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:17,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:53:17,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:53:17,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:53:17,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 04:53:17,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:53:17,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:53:17,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:53:17,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:53:17,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:53:17,138 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 04:53:17,139 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [73899916] [2020-10-27 04:53:17,139 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:53:17,139 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:53:17,139 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977134565] [2020-10-27 04:53:17,140 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:53:17,140 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:53:17,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:53:17,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:53:17,142 INFO L87 Difference]: Start difference. First operand 2851 states and 4014 transitions. Second operand 5 states. [2020-10-27 04:53:18,919 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-27 04:53:20,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:53:20,092 INFO L93 Difference]: Finished difference Result 7930 states and 11204 transitions. [2020-10-27 04:53:20,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 04:53:20,093 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 100 [2020-10-27 04:53:20,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:53:20,120 INFO L225 Difference]: With dead ends: 7930 [2020-10-27 04:53:20,121 INFO L226 Difference]: Without dead ends: 5521 [2020-10-27 04:53:20,128 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 04:53:20,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5521 states. [2020-10-27 04:53:20,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5521 to 5484. [2020-10-27 04:53:20,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5484 states. [2020-10-27 04:53:20,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5484 states to 5484 states and 7616 transitions. [2020-10-27 04:53:20,570 INFO L78 Accepts]: Start accepts. Automaton has 5484 states and 7616 transitions. Word has length 100 [2020-10-27 04:53:20,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:53:20,570 INFO L481 AbstractCegarLoop]: Abstraction has 5484 states and 7616 transitions. [2020-10-27 04:53:20,570 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:53:20,570 INFO L276 IsEmpty]: Start isEmpty. Operand 5484 states and 7616 transitions. [2020-10-27 04:53:20,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-27 04:53:20,580 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:53:20,581 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:53:20,581 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 04:53:20,581 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:53:20,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:53:20,582 INFO L82 PathProgramCache]: Analyzing trace with hash -568943987, now seen corresponding path program 1 times [2020-10-27 04:53:20,582 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:53:20,582 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1989110383] [2020-10-27 04:53:20,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:53:20,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:53:20,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:20,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:20,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:20,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:20,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:20,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:25,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:53:25,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-27 04:53:25,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 04:53:25,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-27 04:53:25,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:53:25,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:53:25,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:53:25,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-27 04:53:25,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:53:26,057 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-27 04:53:26,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:53:26,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:53:26,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:26,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:53:26,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:53:26,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:53:26,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 04:53:26,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:53:26,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:53:26,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:53:26,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:53:26,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:53:26,133 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 04:53:26,133 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1989110383] [2020-10-27 04:53:26,135 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:53:26,135 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:53:26,136 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618739486] [2020-10-27 04:53:26,136 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:53:26,137 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:53:26,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:53:26,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:53:26,138 INFO L87 Difference]: Start difference. First operand 5484 states and 7616 transitions. Second operand 5 states. [2020-10-27 04:53:27,959 WARN L193 SmtUtils]: Spent 375.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-27 04:53:29,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:53:29,137 INFO L93 Difference]: Finished difference Result 13848 states and 19470 transitions. [2020-10-27 04:53:29,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 04:53:29,137 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 101 [2020-10-27 04:53:29,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:53:29,181 INFO L225 Difference]: With dead ends: 13848 [2020-10-27 04:53:29,182 INFO L226 Difference]: Without dead ends: 10495 [2020-10-27 04:53:29,192 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 04:53:29,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10495 states. [2020-10-27 04:53:30,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10495 to 10466. [2020-10-27 04:53:30,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10466 states. [2020-10-27 04:53:30,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10466 states to 10466 states and 14314 transitions. [2020-10-27 04:53:30,243 INFO L78 Accepts]: Start accepts. Automaton has 10466 states and 14314 transitions. Word has length 101 [2020-10-27 04:53:30,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:53:30,244 INFO L481 AbstractCegarLoop]: Abstraction has 10466 states and 14314 transitions. [2020-10-27 04:53:30,244 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:53:30,244 INFO L276 IsEmpty]: Start isEmpty. Operand 10466 states and 14314 transitions. [2020-10-27 04:53:30,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-27 04:53:30,262 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:53:30,262 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:53:30,262 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 04:53:30,262 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:53:30,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:53:30,263 INFO L82 PathProgramCache]: Analyzing trace with hash 1446680435, now seen corresponding path program 1 times [2020-10-27 04:53:30,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:53:30,263 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1254201286] [2020-10-27 04:53:30,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:53:30,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:53:30,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:30,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:30,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:30,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:30,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:30,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:35,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:53:35,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-27 04:53:35,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 04:53:35,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-27 04:53:35,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:53:35,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:53:35,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 04:53:35,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-27 04:53:35,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:53:35,727 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-27 04:53:35,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:53:35,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:53:35,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:35,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:53:35,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:53:35,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:53:35,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 04:53:35,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:53:35,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:53:35,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:53:35,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:53:35,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:53:35,775 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 04:53:35,776 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1254201286] [2020-10-27 04:53:35,776 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:53:35,776 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:53:35,776 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233587806] [2020-10-27 04:53:35,777 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:53:35,777 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:53:35,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:53:35,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:53:35,778 INFO L87 Difference]: Start difference. First operand 10466 states and 14314 transitions. Second operand 5 states. [2020-10-27 04:53:37,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:53:37,574 INFO L93 Difference]: Finished difference Result 16910 states and 23138 transitions. [2020-10-27 04:53:37,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 04:53:37,575 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 102 [2020-10-27 04:53:37,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:53:37,605 INFO L225 Difference]: With dead ends: 16910 [2020-10-27 04:53:37,605 INFO L226 Difference]: Without dead ends: 6762 [2020-10-27 04:53:37,626 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 04:53:37,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6762 states. [2020-10-27 04:53:38,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6762 to 6762. [2020-10-27 04:53:38,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6762 states. [2020-10-27 04:53:38,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6762 states to 6762 states and 9204 transitions. [2020-10-27 04:53:38,062 INFO L78 Accepts]: Start accepts. Automaton has 6762 states and 9204 transitions. Word has length 102 [2020-10-27 04:53:38,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:53:38,062 INFO L481 AbstractCegarLoop]: Abstraction has 6762 states and 9204 transitions. [2020-10-27 04:53:38,062 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:53:38,062 INFO L276 IsEmpty]: Start isEmpty. Operand 6762 states and 9204 transitions. [2020-10-27 04:53:38,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-27 04:53:38,072 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:53:38,073 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:53:38,073 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 04:53:38,073 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:53:38,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:53:38,073 INFO L82 PathProgramCache]: Analyzing trace with hash -1161611246, now seen corresponding path program 1 times [2020-10-27 04:53:38,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:53:38,074 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [792890902] [2020-10-27 04:53:38,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:53:38,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:53:38,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:38,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:38,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:38,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:38,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:38,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:43,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:53:43,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-27 04:53:43,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 04:53:43,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-27 04:53:43,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:53:43,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:53:43,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 04:53:43,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-27 04:53:43,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:53:43,517 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-27 04:53:43,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:53:43,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:53:43,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:43,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:53:43,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:53:43,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:53:43,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 04:53:43,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:53:43,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:53:43,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:53:43,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 04:53:43,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:53:43,575 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 04:53:43,575 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [792890902] [2020-10-27 04:53:43,576 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:53:43,576 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:53:43,576 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840315258] [2020-10-27 04:53:43,576 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 04:53:43,577 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:53:43,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 04:53:43,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 04:53:43,578 INFO L87 Difference]: Start difference. First operand 6762 states and 9204 transitions. Second operand 6 states. [2020-10-27 04:53:44,003 WARN L193 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-27 04:53:45,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:53:45,585 INFO L93 Difference]: Finished difference Result 11863 states and 16520 transitions. [2020-10-27 04:53:45,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 04:53:45,586 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 105 [2020-10-27 04:53:45,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:53:45,600 INFO L225 Difference]: With dead ends: 11863 [2020-10-27 04:53:45,600 INFO L226 Difference]: Without dead ends: 6762 [2020-10-27 04:53:45,611 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:53:45,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6762 states. [2020-10-27 04:53:46,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6762 to 6762. [2020-10-27 04:53:46,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6762 states. [2020-10-27 04:53:46,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6762 states to 6762 states and 9092 transitions. [2020-10-27 04:53:46,027 INFO L78 Accepts]: Start accepts. Automaton has 6762 states and 9092 transitions. Word has length 105 [2020-10-27 04:53:46,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:53:46,027 INFO L481 AbstractCegarLoop]: Abstraction has 6762 states and 9092 transitions. [2020-10-27 04:53:46,027 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 04:53:46,027 INFO L276 IsEmpty]: Start isEmpty. Operand 6762 states and 9092 transitions. [2020-10-27 04:53:46,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-27 04:53:46,035 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:53:46,036 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:53:46,036 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 04:53:46,036 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:53:46,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:53:46,037 INFO L82 PathProgramCache]: Analyzing trace with hash 911089207, now seen corresponding path program 1 times [2020-10-27 04:53:46,037 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:53:46,037 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [412382852] [2020-10-27 04:53:46,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:53:46,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:53:46,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:46,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:46,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:46,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:46,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:48,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:48,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:48,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:51,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:53:51,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-27 04:53:51,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 04:53:51,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-27 04:53:51,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:53:51,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:53:51,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:53:51,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-27 04:53:51,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:53:51,463 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-27 04:53:51,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:53:51,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:53:51,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:51,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:53:51,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:53:51,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:53:51,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:53:51,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:53:51,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:53:51,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:53:51,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:53:51,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:53:51,500 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 04:53:51,500 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [412382852] [2020-10-27 04:53:51,500 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:53:51,500 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:53:51,500 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219997836] [2020-10-27 04:53:51,501 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:53:51,501 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:53:51,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:53:51,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:53:51,502 INFO L87 Difference]: Start difference. First operand 6762 states and 9092 transitions. Second operand 5 states. [2020-10-27 04:53:51,919 WARN L193 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-10-27 04:53:54,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:53:54,335 INFO L93 Difference]: Finished difference Result 12109 states and 16243 transitions. [2020-10-27 04:53:54,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 04:53:54,336 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 105 [2020-10-27 04:53:54,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:53:54,350 INFO L225 Difference]: With dead ends: 12109 [2020-10-27 04:53:54,351 INFO L226 Difference]: Without dead ends: 6789 [2020-10-27 04:53:54,361 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 04:53:54,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6789 states. [2020-10-27 04:53:54,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6789 to 6762. [2020-10-27 04:53:54,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6762 states. [2020-10-27 04:53:54,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6762 states to 6762 states and 9053 transitions. [2020-10-27 04:53:54,880 INFO L78 Accepts]: Start accepts. Automaton has 6762 states and 9053 transitions. Word has length 105 [2020-10-27 04:53:54,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:53:54,881 INFO L481 AbstractCegarLoop]: Abstraction has 6762 states and 9053 transitions. [2020-10-27 04:53:54,881 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:53:54,881 INFO L276 IsEmpty]: Start isEmpty. Operand 6762 states and 9053 transitions. [2020-10-27 04:53:54,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-27 04:53:54,886 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:53:54,886 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:53:54,886 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 04:53:54,886 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:53:54,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:53:54,887 INFO L82 PathProgramCache]: Analyzing trace with hash 284274822, now seen corresponding path program 1 times [2020-10-27 04:53:54,887 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:53:54,887 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [545191481] [2020-10-27 04:53:54,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:53:54,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:53:54,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:54,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:55,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:55,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:55,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:59,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:53:59,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-27 04:53:59,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:53:59,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-27 04:53:59,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:53:59,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:53:59,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 04:53:59,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-27 04:53:59,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:54:00,361 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-27 04:54:00,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:54:00,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:54:00,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:00,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:54:00,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:54:00,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:54:00,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:54:00,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:54:00,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:54:00,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:54:00,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:54:00,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:54:00,398 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 04:54:00,398 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [545191481] [2020-10-27 04:54:00,398 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:54:00,398 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:54:00,398 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826816778] [2020-10-27 04:54:00,399 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:54:00,399 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:54:00,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:54:00,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:54:00,400 INFO L87 Difference]: Start difference. First operand 6762 states and 9053 transitions. Second operand 5 states. [2020-10-27 04:54:01,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:54:01,897 INFO L93 Difference]: Finished difference Result 10363 states and 13995 transitions. [2020-10-27 04:54:01,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 04:54:01,898 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 106 [2020-10-27 04:54:01,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:54:01,910 INFO L225 Difference]: With dead ends: 10363 [2020-10-27 04:54:01,910 INFO L226 Difference]: Without dead ends: 5502 [2020-10-27 04:54:01,921 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 04:54:01,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5502 states. [2020-10-27 04:54:02,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5502 to 5502. [2020-10-27 04:54:02,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5502 states. [2020-10-27 04:54:02,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5502 states to 5502 states and 7340 transitions. [2020-10-27 04:54:02,360 INFO L78 Accepts]: Start accepts. Automaton has 5502 states and 7340 transitions. Word has length 106 [2020-10-27 04:54:02,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:54:02,360 INFO L481 AbstractCegarLoop]: Abstraction has 5502 states and 7340 transitions. [2020-10-27 04:54:02,360 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:54:02,360 INFO L276 IsEmpty]: Start isEmpty. Operand 5502 states and 7340 transitions. [2020-10-27 04:54:02,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-27 04:54:02,365 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:54:02,366 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:54:02,366 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 04:54:02,366 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:54:02,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:54:02,366 INFO L82 PathProgramCache]: Analyzing trace with hash 464418039, now seen corresponding path program 1 times [2020-10-27 04:54:02,367 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:54:02,367 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1510142238] [2020-10-27 04:54:02,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:54:02,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:54:02,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:02,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:02,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:02,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:07,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:54:07,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 04:54:07,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:54:07,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 04:54:07,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:54:07,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:54:07,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-27 04:54:07,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 04:54:07,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:54:07,830 WARN L193 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-27 04:54:07,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:54:07,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:54:07,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:07,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:54:07,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:54:07,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:54:07,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 04:54:07,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:54:07,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:54:07,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:54:07,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:54:07,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:54:07,872 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 04:54:07,872 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1510142238] [2020-10-27 04:54:07,873 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:54:07,873 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:54:07,873 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950385774] [2020-10-27 04:54:07,873 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:54:07,873 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:54:07,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:54:07,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:54:07,874 INFO L87 Difference]: Start difference. First operand 5502 states and 7340 transitions. Second operand 5 states. [2020-10-27 04:54:09,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:54:09,378 INFO L93 Difference]: Finished difference Result 8963 states and 11979 transitions. [2020-10-27 04:54:09,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 04:54:09,380 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 108 [2020-10-27 04:54:09,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:54:09,390 INFO L225 Difference]: With dead ends: 8963 [2020-10-27 04:54:09,390 INFO L226 Difference]: Without dead ends: 3731 [2020-10-27 04:54:09,400 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 04:54:09,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3731 states. [2020-10-27 04:54:09,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3731 to 3731. [2020-10-27 04:54:09,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3731 states. [2020-10-27 04:54:09,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3731 states to 3731 states and 4957 transitions. [2020-10-27 04:54:09,743 INFO L78 Accepts]: Start accepts. Automaton has 3731 states and 4957 transitions. Word has length 108 [2020-10-27 04:54:09,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:54:09,743 INFO L481 AbstractCegarLoop]: Abstraction has 3731 states and 4957 transitions. [2020-10-27 04:54:09,744 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:54:09,744 INFO L276 IsEmpty]: Start isEmpty. Operand 3731 states and 4957 transitions. [2020-10-27 04:54:09,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-27 04:54:09,748 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:54:09,749 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:54:09,749 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 04:54:09,749 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:54:09,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:54:09,750 INFO L82 PathProgramCache]: Analyzing trace with hash -1111959317, now seen corresponding path program 1 times [2020-10-27 04:54:09,750 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:54:09,750 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1566701559] [2020-10-27 04:54:09,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:54:09,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:54:09,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:09,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:09,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:09,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:10,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:10,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:13,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:14,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:14,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:14,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:14,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:54:14,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-27 04:54:14,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 04:54:14,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-27 04:54:14,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:54:14,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:54:14,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 04:54:14,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-27 04:54:14,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:54:15,226 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-27 04:54:15,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:54:15,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:54:15,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:15,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:54:15,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:54:15,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:54:15,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 04:54:15,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:54:15,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:54:15,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:54:15,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 04:54:15,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:54:15,281 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 04:54:15,281 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1566701559] [2020-10-27 04:54:15,281 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:54:15,281 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:54:15,281 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569738135] [2020-10-27 04:54:15,282 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 04:54:15,282 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:54:15,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 04:54:15,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-27 04:54:15,283 INFO L87 Difference]: Start difference. First operand 3731 states and 4957 transitions. Second operand 6 states. [2020-10-27 04:54:15,742 WARN L193 SmtUtils]: Spent 403.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-27 04:54:17,093 WARN L193 SmtUtils]: Spent 373.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-27 04:54:18,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:54:18,205 INFO L93 Difference]: Finished difference Result 8124 states and 11287 transitions. [2020-10-27 04:54:18,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 04:54:18,205 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 112 [2020-10-27 04:54:18,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:54:18,217 INFO L225 Difference]: With dead ends: 8124 [2020-10-27 04:54:18,217 INFO L226 Difference]: Without dead ends: 5510 [2020-10-27 04:54:18,224 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:54:18,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5510 states. [2020-10-27 04:54:18,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5510 to 5475. [2020-10-27 04:54:18,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5475 states. [2020-10-27 04:54:18,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5475 states to 5475 states and 7490 transitions. [2020-10-27 04:54:18,823 INFO L78 Accepts]: Start accepts. Automaton has 5475 states and 7490 transitions. Word has length 112 [2020-10-27 04:54:18,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:54:18,824 INFO L481 AbstractCegarLoop]: Abstraction has 5475 states and 7490 transitions. [2020-10-27 04:54:18,824 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 04:54:18,824 INFO L276 IsEmpty]: Start isEmpty. Operand 5475 states and 7490 transitions. [2020-10-27 04:54:18,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-27 04:54:18,828 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:54:18,828 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:54:18,828 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 04:54:18,828 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:54:18,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:54:18,829 INFO L82 PathProgramCache]: Analyzing trace with hash -1577689483, now seen corresponding path program 1 times [2020-10-27 04:54:18,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:54:18,829 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1089129838] [2020-10-27 04:54:18,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:54:18,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:54:18,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:18,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:18,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:19,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:23,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:54:23,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-27 04:54:23,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:54:23,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-27 04:54:23,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:54:23,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 04:54:23,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:54:23,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-27 04:54:23,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:54:24,630 WARN L193 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-27 04:54:24,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:54:24,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:54:24,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:24,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:54:24,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:54:24,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:54:24,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 04:54:24,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:54:24,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:54:24,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:54:24,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:54:24,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:54:24,694 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 04:54:24,695 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1089129838] [2020-10-27 04:54:24,695 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:54:24,695 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 04:54:24,695 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96391716] [2020-10-27 04:54:24,696 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 04:54:24,696 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:54:24,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 04:54:24,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-27 04:54:24,697 INFO L87 Difference]: Start difference. First operand 5475 states and 7490 transitions. Second operand 11 states. [2020-10-27 04:54:25,129 WARN L193 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-27 04:54:27,323 WARN L193 SmtUtils]: Spent 383.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-10-27 04:54:27,733 WARN L193 SmtUtils]: Spent 381.00 ms on a formula simplification that was a NOOP. DAG size: 201 [2020-10-27 04:54:28,163 WARN L193 SmtUtils]: Spent 396.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-27 04:54:28,637 WARN L193 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-10-27 04:54:29,101 WARN L193 SmtUtils]: Spent 414.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-10-27 04:54:29,485 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 201 [2020-10-27 04:54:29,935 WARN L193 SmtUtils]: Spent 402.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-10-27 04:54:33,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:54:33,235 INFO L93 Difference]: Finished difference Result 24917 states and 37242 transitions. [2020-10-27 04:54:33,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-27 04:54:33,236 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 112 [2020-10-27 04:54:33,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:54:33,273 INFO L225 Difference]: With dead ends: 24917 [2020-10-27 04:54:33,273 INFO L226 Difference]: Without dead ends: 22037 [2020-10-27 04:54:33,285 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=162, Invalid=650, Unknown=0, NotChecked=0, Total=812 [2020-10-27 04:54:33,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22037 states. [2020-10-27 04:54:34,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22037 to 8834. [2020-10-27 04:54:34,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8834 states. [2020-10-27 04:54:34,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8834 states to 8834 states and 12491 transitions. [2020-10-27 04:54:34,451 INFO L78 Accepts]: Start accepts. Automaton has 8834 states and 12491 transitions. Word has length 112 [2020-10-27 04:54:34,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:54:34,452 INFO L481 AbstractCegarLoop]: Abstraction has 8834 states and 12491 transitions. [2020-10-27 04:54:34,452 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 04:54:34,452 INFO L276 IsEmpty]: Start isEmpty. Operand 8834 states and 12491 transitions. [2020-10-27 04:54:34,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-27 04:54:34,456 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:54:34,457 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:54:34,457 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 04:54:34,457 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:54:34,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:54:34,457 INFO L82 PathProgramCache]: Analyzing trace with hash 1264322709, now seen corresponding path program 1 times [2020-10-27 04:54:34,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:54:34,458 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1780648849] [2020-10-27 04:54:34,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:54:34,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:54:34,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:34,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:34,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:35,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:39,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:54:39,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-27 04:54:39,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:54:39,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-27 04:54:39,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:54:39,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 04:54:39,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:54:39,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-27 04:54:39,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:54:40,178 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 37 [2020-10-27 04:54:40,685 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-27 04:54:40,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:54:40,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:54:40,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:40,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:54:40,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:54:40,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:54:40,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:54:40,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:54:40,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:54:40,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:54:40,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:54:40,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:54:40,743 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 04:54:40,744 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1780648849] [2020-10-27 04:54:40,744 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:54:40,744 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-27 04:54:40,744 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522358627] [2020-10-27 04:54:40,745 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-27 04:54:40,745 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:54:40,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-27 04:54:40,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2020-10-27 04:54:40,745 INFO L87 Difference]: Start difference. First operand 8834 states and 12491 transitions. Second operand 15 states. [2020-10-27 04:54:41,174 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-27 04:54:42,113 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 54 [2020-10-27 04:54:42,301 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 59 [2020-10-27 04:54:44,866 WARN L193 SmtUtils]: Spent 885.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 213 [2020-10-27 04:54:48,402 WARN L193 SmtUtils]: Spent 774.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 215 [2020-10-27 04:54:49,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:54:49,452 INFO L93 Difference]: Finished difference Result 24132 states and 35414 transitions. [2020-10-27 04:54:49,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 04:54:49,453 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 112 [2020-10-27 04:54:49,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:54:49,480 INFO L225 Difference]: With dead ends: 24132 [2020-10-27 04:54:49,480 INFO L226 Difference]: Without dead ends: 20547 [2020-10-27 04:54:49,490 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=167, Invalid=589, Unknown=0, NotChecked=0, Total=756 [2020-10-27 04:54:49,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20547 states. [2020-10-27 04:54:50,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20547 to 9446. [2020-10-27 04:54:50,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9446 states. [2020-10-27 04:54:50,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9446 states to 9446 states and 13219 transitions. [2020-10-27 04:54:50,771 INFO L78 Accepts]: Start accepts. Automaton has 9446 states and 13219 transitions. Word has length 112 [2020-10-27 04:54:50,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:54:50,771 INFO L481 AbstractCegarLoop]: Abstraction has 9446 states and 13219 transitions. [2020-10-27 04:54:50,771 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-27 04:54:50,772 INFO L276 IsEmpty]: Start isEmpty. Operand 9446 states and 13219 transitions. [2020-10-27 04:54:50,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-27 04:54:50,777 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:54:50,777 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:54:50,777 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 04:54:50,777 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:54:50,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:54:50,777 INFO L82 PathProgramCache]: Analyzing trace with hash 138691144, now seen corresponding path program 1 times [2020-10-27 04:54:50,777 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:54:50,778 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2010357661] [2020-10-27 04:54:50,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:54:50,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:54:50,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:50,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:51,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:54:51,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-27 04:54:51,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:54:51,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 635 [2020-10-27 04:54:51,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:54:51,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:54:51,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-27 04:54:51,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-27 04:54:51,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:54:51,858 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-27 04:54:51,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:54:51,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:54:51,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:51,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:54:51,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:54:51,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:54:51,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:54:51,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:54:51,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:54:51,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:54:51,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:54:51,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:54:51,888 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 04:54:51,888 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2010357661] [2020-10-27 04:54:51,888 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:54:51,888 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:54:51,888 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216419055] [2020-10-27 04:54:51,889 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:54:51,889 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:54:51,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:54:51,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:54:51,890 INFO L87 Difference]: Start difference. First operand 9446 states and 13219 transitions. Second operand 5 states. [2020-10-27 04:54:53,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:54:53,994 INFO L93 Difference]: Finished difference Result 17281 states and 24232 transitions. [2020-10-27 04:54:53,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 04:54:53,995 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 112 [2020-10-27 04:54:53,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:54:54,007 INFO L225 Difference]: With dead ends: 17281 [2020-10-27 04:54:54,007 INFO L226 Difference]: Without dead ends: 8126 [2020-10-27 04:54:54,022 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 04:54:54,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8126 states. [2020-10-27 04:54:54,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8126 to 8126. [2020-10-27 04:54:54,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8126 states. [2020-10-27 04:54:54,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8126 states to 8126 states and 11353 transitions. [2020-10-27 04:54:54,997 INFO L78 Accepts]: Start accepts. Automaton has 8126 states and 11353 transitions. Word has length 112 [2020-10-27 04:54:54,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:54:54,997 INFO L481 AbstractCegarLoop]: Abstraction has 8126 states and 11353 transitions. [2020-10-27 04:54:54,997 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:54:54,997 INFO L276 IsEmpty]: Start isEmpty. Operand 8126 states and 11353 transitions. [2020-10-27 04:54:55,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-27 04:54:55,002 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:54:55,002 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:54:55,002 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 04:54:55,002 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:54:55,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:54:55,002 INFO L82 PathProgramCache]: Analyzing trace with hash 1437328470, now seen corresponding path program 1 times [2020-10-27 04:54:55,003 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:54:55,003 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [903967040] [2020-10-27 04:54:55,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:54:55,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:54:55,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:55,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:55,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:56,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:56,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:56,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:56,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:56,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:57,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:57,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:58,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:58,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:00,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:55:00,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-27 04:55:00,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 04:55:00,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 04:55:00,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:55:00,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 04:55:00,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 04:55:00,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-27 04:55:00,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:55:00,565 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-27 04:55:00,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:55:00,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:55:00,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:00,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:55:00,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:55:00,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:55:00,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 04:55:00,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:55:00,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:55:00,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:55:00,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 04:55:00,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:55:00,635 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 04:55:00,635 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [903967040] [2020-10-27 04:55:00,635 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:55:00,635 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 04:55:00,636 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6088671] [2020-10-27 04:55:00,636 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 04:55:00,636 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:55:00,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 04:55:00,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-27 04:55:00,637 INFO L87 Difference]: Start difference. First operand 8126 states and 11353 transitions. Second operand 11 states. [2020-10-27 04:55:01,106 WARN L193 SmtUtils]: Spent 389.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-27 04:55:03,122 WARN L193 SmtUtils]: Spent 401.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-10-27 04:55:03,543 WARN L193 SmtUtils]: Spent 384.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-27 04:55:06,301 WARN L193 SmtUtils]: Spent 407.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-27 04:55:06,716 WARN L193 SmtUtils]: Spent 376.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-27 04:55:10,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:55:10,308 INFO L93 Difference]: Finished difference Result 39173 states and 57911 transitions. [2020-10-27 04:55:10,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-27 04:55:10,309 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 113 [2020-10-27 04:55:10,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:55:10,349 INFO L225 Difference]: With dead ends: 39173 [2020-10-27 04:55:10,350 INFO L226 Difference]: Without dead ends: 34358 [2020-10-27 04:55:10,362 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=277, Invalid=715, Unknown=0, NotChecked=0, Total=992 [2020-10-27 04:55:10,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34358 states. [2020-10-27 04:55:11,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34358 to 9901. [2020-10-27 04:55:11,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9901 states. [2020-10-27 04:55:11,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9901 states to 9901 states and 13899 transitions. [2020-10-27 04:55:11,920 INFO L78 Accepts]: Start accepts. Automaton has 9901 states and 13899 transitions. Word has length 113 [2020-10-27 04:55:11,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:55:11,920 INFO L481 AbstractCegarLoop]: Abstraction has 9901 states and 13899 transitions. [2020-10-27 04:55:11,920 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 04:55:11,920 INFO L276 IsEmpty]: Start isEmpty. Operand 9901 states and 13899 transitions. [2020-10-27 04:55:11,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-27 04:55:11,985 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:55:11,985 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:55:11,985 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 04:55:11,985 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:55:11,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:55:11,986 INFO L82 PathProgramCache]: Analyzing trace with hash 1780052321, now seen corresponding path program 1 times [2020-10-27 04:55:11,986 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:55:11,986 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [339858616] [2020-10-27 04:55:11,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:55:12,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:55:12,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:12,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:12,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:12,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:12,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:12,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:13,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:55:13,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-27 04:55:13,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 04:55:13,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1661 [2020-10-27 04:55:13,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:55:13,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:55:13,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 04:55:13,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-27 04:55:13,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:55:14,127 WARN L193 SmtUtils]: Spent 398.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-27 04:55:14,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:55:14,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:55:14,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:14,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:55:14,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:55:14,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:55:14,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 04:55:14,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:55:14,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:55:14,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:55:14,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 04:55:14,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:55:14,174 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 04:55:14,174 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [339858616] [2020-10-27 04:55:14,174 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:55:14,175 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:55:14,175 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014862703] [2020-10-27 04:55:14,175 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 04:55:14,175 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:55:14,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 04:55:14,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 04:55:14,176 INFO L87 Difference]: Start difference. First operand 9901 states and 13899 transitions. Second operand 6 states. [2020-10-27 04:55:14,602 WARN L193 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-27 04:55:17,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:55:17,059 INFO L93 Difference]: Finished difference Result 17333 states and 24968 transitions. [2020-10-27 04:55:17,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 04:55:17,060 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 113 [2020-10-27 04:55:17,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:55:17,070 INFO L225 Difference]: With dead ends: 17333 [2020-10-27 04:55:17,070 INFO L226 Difference]: Without dead ends: 9236 [2020-10-27 04:55:17,078 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:55:17,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9236 states. [2020-10-27 04:55:18,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9236 to 9236. [2020-10-27 04:55:18,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9236 states. [2020-10-27 04:55:18,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9236 states to 9236 states and 13004 transitions. [2020-10-27 04:55:18,362 INFO L78 Accepts]: Start accepts. Automaton has 9236 states and 13004 transitions. Word has length 113 [2020-10-27 04:55:18,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:55:18,362 INFO L481 AbstractCegarLoop]: Abstraction has 9236 states and 13004 transitions. [2020-10-27 04:55:18,362 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 04:55:18,362 INFO L276 IsEmpty]: Start isEmpty. Operand 9236 states and 13004 transitions. [2020-10-27 04:55:18,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-27 04:55:18,367 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:55:18,367 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:55:18,367 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-27 04:55:18,367 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:55:18,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:55:18,368 INFO L82 PathProgramCache]: Analyzing trace with hash -1016296517, now seen corresponding path program 1 times [2020-10-27 04:55:18,368 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:55:18,368 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1772172161] [2020-10-27 04:55:18,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:55:18,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:55:18,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:18,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:18,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:18,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:18,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:18,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:19,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:19,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:22,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:55:22,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-27 04:55:22,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 04:55:22,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3722 [2020-10-27 04:55:22,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:55:22,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:55:22,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:55:22,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-27 04:55:22,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:55:22,556 WARN L193 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-27 04:55:22,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:55:22,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:55:22,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:22,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:55:22,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:55:22,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:55:22,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:55:22,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:55:22,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:55:22,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:55:22,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:55:22,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:55:22,598 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 04:55:22,599 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1772172161] [2020-10-27 04:55:22,599 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:55:22,599 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:55:22,599 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77941154] [2020-10-27 04:55:22,599 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:55:22,599 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:55:22,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:55:22,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:55:22,600 INFO L87 Difference]: Start difference. First operand 9236 states and 13004 transitions. Second operand 5 states. [2020-10-27 04:55:23,003 WARN L193 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-10-27 04:55:26,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:55:26,425 INFO L93 Difference]: Finished difference Result 16054 states and 22708 transitions. [2020-10-27 04:55:26,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 04:55:26,426 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 113 [2020-10-27 04:55:26,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:55:26,436 INFO L225 Difference]: With dead ends: 16054 [2020-10-27 04:55:26,437 INFO L226 Difference]: Without dead ends: 9262 [2020-10-27 04:55:26,444 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 04:55:26,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9262 states. [2020-10-27 04:55:27,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9262 to 9208. [2020-10-27 04:55:27,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9208 states. [2020-10-27 04:55:27,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9208 states to 9208 states and 12890 transitions. [2020-10-27 04:55:27,831 INFO L78 Accepts]: Start accepts. Automaton has 9208 states and 12890 transitions. Word has length 113 [2020-10-27 04:55:27,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:55:27,831 INFO L481 AbstractCegarLoop]: Abstraction has 9208 states and 12890 transitions. [2020-10-27 04:55:27,831 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:55:27,831 INFO L276 IsEmpty]: Start isEmpty. Operand 9208 states and 12890 transitions. [2020-10-27 04:55:27,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-27 04:55:27,836 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:55:27,836 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:55:27,836 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-27 04:55:27,836 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:55:27,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:55:27,837 INFO L82 PathProgramCache]: Analyzing trace with hash 962357389, now seen corresponding path program 1 times [2020-10-27 04:55:27,837 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:55:27,837 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1165459113] [2020-10-27 04:55:27,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:55:27,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:55:27,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:27,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:28,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:29,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:55:29,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-27 04:55:29,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 04:55:29,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1220 [2020-10-27 04:55:29,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:55:29,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 04:55:29,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:55:29,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-27 04:55:29,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:55:29,816 WARN L193 SmtUtils]: Spent 375.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-27 04:55:29,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:55:29,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:55:29,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:29,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:55:29,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:55:29,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:55:29,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:55:29,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:55:29,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:55:29,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:55:29,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:55:29,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:55:29,883 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 04:55:29,883 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1165459113] [2020-10-27 04:55:29,883 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:55:29,883 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 04:55:29,884 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427032712] [2020-10-27 04:55:29,884 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 04:55:29,884 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:55:29,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 04:55:29,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-27 04:55:29,885 INFO L87 Difference]: Start difference. First operand 9208 states and 12890 transitions. Second operand 11 states. [2020-10-27 04:55:30,349 WARN L193 SmtUtils]: Spent 390.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-27 04:55:32,598 WARN L193 SmtUtils]: Spent 384.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-27 04:55:33,062 WARN L193 SmtUtils]: Spent 433.00 ms on a formula simplification that was a NOOP. DAG size: 216 [2020-10-27 04:55:33,489 WARN L193 SmtUtils]: Spent 401.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-27 04:55:34,092 WARN L193 SmtUtils]: Spent 494.00 ms on a formula simplification that was a NOOP. DAG size: 218 [2020-10-27 04:55:34,527 WARN L193 SmtUtils]: Spent 400.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-27 04:55:34,928 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 201 [2020-10-27 04:55:35,376 WARN L193 SmtUtils]: Spent 413.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-27 04:55:39,335 WARN L193 SmtUtils]: Spent 421.00 ms on a formula simplification that was a NOOP. DAG size: 222 [2020-10-27 04:55:39,884 WARN L193 SmtUtils]: Spent 393.00 ms on a formula simplification that was a NOOP. DAG size: 216 [2020-10-27 04:55:40,696 WARN L193 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2020-10-27 04:55:43,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:55:43,378 INFO L93 Difference]: Finished difference Result 30266 states and 45114 transitions. [2020-10-27 04:55:43,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-27 04:55:43,379 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 114 [2020-10-27 04:55:43,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:55:43,423 INFO L225 Difference]: With dead ends: 30266 [2020-10-27 04:55:43,423 INFO L226 Difference]: Without dead ends: 30192 [2020-10-27 04:55:43,431 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 381 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=280, Invalid=1202, Unknown=0, NotChecked=0, Total=1482 [2020-10-27 04:55:43,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30192 states. [2020-10-27 04:55:45,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30192 to 9230. [2020-10-27 04:55:45,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9230 states. [2020-10-27 04:55:45,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9230 states to 9230 states and 12912 transitions. [2020-10-27 04:55:45,142 INFO L78 Accepts]: Start accepts. Automaton has 9230 states and 12912 transitions. Word has length 114 [2020-10-27 04:55:45,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:55:45,142 INFO L481 AbstractCegarLoop]: Abstraction has 9230 states and 12912 transitions. [2020-10-27 04:55:45,142 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 04:55:45,142 INFO L276 IsEmpty]: Start isEmpty. Operand 9230 states and 12912 transitions. [2020-10-27 04:55:45,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-27 04:55:45,146 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:55:45,146 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:55:45,146 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-27 04:55:45,147 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:55:45,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:55:45,147 INFO L82 PathProgramCache]: Analyzing trace with hash 1305081240, now seen corresponding path program 1 times [2020-10-27 04:55:45,147 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:55:45,147 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [870917631] [2020-10-27 04:55:45,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:55:45,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-27 04:55:45,185 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-27 04:55:45,185 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-27 04:55:45,188 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-27 04:55:45,227 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 04:55:45 BoogieIcfgContainer [2020-10-27 04:55:45,228 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 04:55:45,229 INFO L168 Benchmark]: Toolchain (without parser) took 192033.92 ms. Allocated memory was 161.5 MB in the beginning and 1.9 GB in the end (delta: 1.7 GB). Free memory was 135.3 MB in the beginning and 752.5 MB in the end (delta: -617.2 MB). Peak memory consumption was 1.1 GB. Max. memory is 8.0 GB. [2020-10-27 04:55:45,230 INFO L168 Benchmark]: CDTParser took 0.55 ms. Allocated memory is still 161.5 MB. Free memory is still 132.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 04:55:45,230 INFO L168 Benchmark]: CACSL2BoogieTranslator took 781.24 ms. Allocated memory is still 161.5 MB. Free memory was 134.5 MB in the beginning and 111.6 MB in the end (delta: 22.9 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. [2020-10-27 04:55:45,231 INFO L168 Benchmark]: Boogie Preprocessor took 119.53 ms. Allocated memory is still 161.5 MB. Free memory was 111.6 MB in the beginning and 108.0 MB in the end (delta: 3.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-10-27 04:55:45,231 INFO L168 Benchmark]: RCFGBuilder took 1830.49 ms. Allocated memory was 161.5 MB in the beginning and 205.5 MB in the end (delta: 44.0 MB). Free memory was 107.8 MB in the beginning and 179.7 MB in the end (delta: -71.9 MB). Peak memory consumption was 59.2 MB. Max. memory is 8.0 GB. [2020-10-27 04:55:45,232 INFO L168 Benchmark]: TraceAbstraction took 189287.16 ms. Allocated memory was 205.5 MB in the beginning and 1.9 GB in the end (delta: 1.7 GB). Free memory was 179.2 MB in the beginning and 752.5 MB in the end (delta: -573.3 MB). Peak memory consumption was 1.1 GB. Max. memory is 8.0 GB. [2020-10-27 04:55:45,237 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.55 ms. Allocated memory is still 161.5 MB. Free memory is still 132.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 781.24 ms. Allocated memory is still 161.5 MB. Free memory was 134.5 MB in the beginning and 111.6 MB in the end (delta: 22.9 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 119.53 ms. Allocated memory is still 161.5 MB. Free memory was 111.6 MB in the beginning and 108.0 MB in the end (delta: 3.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1830.49 ms. Allocated memory was 161.5 MB in the beginning and 205.5 MB in the end (delta: 44.0 MB). Free memory was 107.8 MB in the beginning and 179.7 MB in the end (delta: -71.9 MB). Peak memory consumption was 59.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 189287.16 ms. Allocated memory was 205.5 MB in the beginning and 1.9 GB in the end (delta: 1.7 GB). Free memory was 179.2 MB in the beginning and 752.5 MB in the end (delta: -573.3 MB). Peak memory consumption was 1.1 GB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 4]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L1] int __return_main; [L16] msg_t nomsg = (msg_t )-1; [L17] port_t p12 = 0; [L18] char p12_old = '\x0'; [L19] char p12_new = '\x0'; [L20] _Bool ep12 = 0; [L21] port_t p13 = 0; [L22] char p13_old = '\x0'; [L23] char p13_new = '\x0'; [L24] _Bool ep13 = 0; [L25] port_t p21 = 0; [L26] char p21_old = '\x0'; [L27] char p21_new = '\x0'; [L28] _Bool ep21 = 0; [L29] port_t p23 = 0; [L30] char p23_old = '\x0'; [L31] char p23_new = '\x0'; [L32] _Bool ep23 = 0; [L33] port_t p31 = 0; [L34] char p31_old = '\x0'; [L35] char p31_new = '\x0'; [L36] _Bool ep31 = 0; [L37] port_t p32 = 0; [L38] char p32_old = '\x0'; [L39] char p32_new = '\x0'; [L40] _Bool ep32 = 0; [L41] char id1 = '\x0'; [L42] char r1 = '\x0'; [L43] char st1 = '\x0'; [L44] char nl1 = '\x0'; [L45] char m1 = '\x0'; [L46] char max1 = '\x0'; [L47] _Bool mode1 = 0; [L48] char id2 = '\x0'; [L49] char r2 = '\x0'; [L50] char st2 = '\x0'; [L51] char nl2 = '\x0'; [L52] char m2 = '\x0'; [L53] char max2 = '\x0'; [L54] _Bool mode2 = 0; [L55] char id3 = '\x0'; [L56] char r3 = '\x0'; [L57] char st3 = '\x0'; [L58] char nl3 = '\x0'; [L59] char m3 = '\x0'; [L60] char max3 = '\x0'; [L61] _Bool mode3 = 0; [L65] void (*nodes[3])() = { &node1, &node2, &node3 }; [L69] int __return_1131; [L70] int __return_1259; [L71] int __return_1679; [L72] int __return_1378; [L73] int __tmp_1379_0; [L74] int __return_1487; [L75] int __return_1392; [L78] int main__c1; [L79] int main__i2; [L80] main__c1 = 0 [L81] ep12 = __VERIFIER_nondet_bool() [L82] ep13 = __VERIFIER_nondet_bool() [L83] ep21 = __VERIFIER_nondet_bool() [L84] ep23 = __VERIFIER_nondet_bool() [L85] ep31 = __VERIFIER_nondet_bool() [L86] ep32 = __VERIFIER_nondet_bool() [L87] id1 = __VERIFIER_nondet_char() [L88] r1 = __VERIFIER_nondet_char() [L89] st1 = __VERIFIER_nondet_char() [L90] nl1 = __VERIFIER_nondet_char() [L91] m1 = __VERIFIER_nondet_char() [L92] max1 = __VERIFIER_nondet_char() [L93] mode1 = __VERIFIER_nondet_bool() [L94] id2 = __VERIFIER_nondet_char() [L95] r2 = __VERIFIER_nondet_char() [L96] st2 = __VERIFIER_nondet_char() [L97] nl2 = __VERIFIER_nondet_char() [L98] m2 = __VERIFIER_nondet_char() [L99] max2 = __VERIFIER_nondet_char() [L100] mode2 = __VERIFIER_nondet_bool() [L101] id3 = __VERIFIER_nondet_char() [L102] r3 = __VERIFIER_nondet_char() [L103] st3 = __VERIFIER_nondet_char() [L104] nl3 = __VERIFIER_nondet_char() [L105] m3 = __VERIFIER_nondet_char() [L106] max3 = __VERIFIER_nondet_char() [L107] mode3 = __VERIFIER_nondet_bool() [L109] _Bool init__r121; [L110] _Bool init__r131; [L111] _Bool init__r211; [L112] _Bool init__r231; [L113] _Bool init__r311; [L114] _Bool init__r321; [L115] _Bool init__r122; [L116] int init__tmp; [L117] _Bool init__r132; [L118] int init__tmp___0; [L119] _Bool init__r212; [L120] int init__tmp___1; [L121] _Bool init__r232; [L122] int init__tmp___2; [L123] _Bool init__r312; [L124] int init__tmp___3; [L125] _Bool init__r322; [L126] int init__tmp___4; [L127] int init__tmp___5; [L128] init__r121 = ep12 [L129] init__r131 = ep13 [L130] init__r211 = ep21 [L131] init__r231 = ep23 [L132] init__r311 = ep31 [L133] init__r321 = ep32 [L134] COND TRUE !(init__r121 == 0) [L136] init__tmp = 1 [L138] init__r122 = (_Bool)init__tmp [L139] COND FALSE !(!(init__r131 == 0)) [L1780] COND TRUE !(init__r121 == 0) [L1782] COND TRUE !(ep23 == 0) [L1784] init__tmp___0 = 1 [L143] init__r132 = (_Bool)init__tmp___0 [L144] COND FALSE !(!(init__r211 == 0)) [L1757] COND TRUE !(init__r231 == 0) [L1759] COND TRUE !(ep31 == 0) [L1761] init__tmp___1 = 1 [L148] init__r212 = (_Bool)init__tmp___1 [L149] COND TRUE !(init__r231 == 0) [L151] init__tmp___2 = 1 [L153] init__r232 = (_Bool)init__tmp___2 [L154] COND TRUE !(init__r311 == 0) [L156] init__tmp___3 = 1 [L158] init__r312 = (_Bool)init__tmp___3 [L159] COND FALSE !(!(init__r321 == 0)) [L1688] COND TRUE !(init__r311 == 0) [L1690] COND TRUE !(ep12 == 0) [L1692] init__tmp___4 = 1 [L163] init__r322 = (_Bool)init__tmp___4 [L164] COND TRUE ((int)id1) != ((int)id2) [L166] COND TRUE ((int)id1) != ((int)id3) [L168] COND TRUE ((int)id2) != ((int)id3) [L170] COND TRUE ((int)id1) >= 0 [L172] COND TRUE ((int)id2) >= 0 [L174] COND TRUE ((int)id3) >= 0 [L176] COND TRUE ((int)r1) == 0 [L178] COND TRUE ((int)r2) == 0 [L180] COND TRUE ((int)r3) == 0 [L182] COND TRUE !(init__r122 == 0) [L184] COND TRUE !(init__r132 == 0) [L186] COND TRUE !(init__r212 == 0) [L188] COND TRUE !(init__r232 == 0) [L190] COND TRUE !(init__r312 == 0) [L192] COND TRUE !(init__r322 == 0) [L194] COND TRUE ((int)max1) == ((int)id1) [L196] COND TRUE ((int)max2) == ((int)id2) [L198] COND TRUE ((int)max3) == ((int)id3) [L200] COND TRUE ((int)st1) == 0 [L202] COND TRUE ((int)st2) == 0 [L204] COND TRUE ((int)st3) == 0 [L206] COND TRUE ((int)nl1) == 0 [L208] COND TRUE ((int)nl2) == 0 [L210] COND TRUE ((int)nl3) == 0 [L212] COND TRUE ((int)mode1) == 0 [L214] COND TRUE ((int)mode2) == 0 [L216] COND TRUE ((int)mode3) == 0 [L218] init__tmp___5 = 1 [L219] __return_1131 = init__tmp___5 [L220] main__i2 = __return_1131 [L221] COND TRUE main__i2 != 0 [L223] p12_old = nomsg [L224] p12_new = nomsg [L225] p13_old = nomsg [L226] p13_new = nomsg [L227] p21_old = nomsg [L228] p21_new = nomsg [L229] p23_old = nomsg [L230] p23_new = nomsg [L231] p31_old = nomsg [L232] p31_new = nomsg [L233] p32_old = nomsg [L234] p32_new = nomsg [L235] main__i2 = 0 [L236] COND TRUE main__i2 < 6 [L239] COND FALSE !(!(mode1 == 0)) [L245] COND TRUE ((int)r1) < 2 [L247] COND TRUE !(ep12 == 0) [L249] int node1____CPAchecker_TMP_0; [L250] COND TRUE max1 != nomsg [L252] COND TRUE p12_new == nomsg [L254] node1____CPAchecker_TMP_0 = max1 [L256] p12_new = node1____CPAchecker_TMP_0 [L258] COND FALSE !(!(ep13 == 0)) [L269] mode1 = 1 [L271] COND FALSE !(!(mode2 == 0)) [L277] COND TRUE ((int)r2) < 2 [L279] COND FALSE !(!(ep21 == 0)) [L290] COND TRUE !(ep23 == 0) [L292] int node2____CPAchecker_TMP_1; [L293] COND TRUE max2 != nomsg [L295] COND TRUE p23_new == nomsg [L297] node2____CPAchecker_TMP_1 = max2 [L299] p23_new = node2____CPAchecker_TMP_1 [L301] mode2 = 1 [L303] COND FALSE !(!(mode3 == 0)) [L309] COND TRUE ((int)r3) < 2 [L311] COND TRUE !(ep31 == 0) [L313] int node3____CPAchecker_TMP_0; [L314] COND TRUE max3 != nomsg [L316] COND TRUE p31_new == nomsg [L318] node3____CPAchecker_TMP_0 = max3 [L320] p31_new = node3____CPAchecker_TMP_0 [L322] COND FALSE !(!(ep32 == 0)) [L333] mode3 = 1 [L334] p12_old = p12_new [L335] p12_new = nomsg [L336] p13_old = p13_new [L337] p13_new = nomsg [L338] p21_old = p21_new [L339] p21_new = nomsg [L340] p23_old = p23_new [L341] p23_new = nomsg [L342] p31_old = p31_new [L343] p31_new = nomsg [L344] p32_old = p32_new [L345] p32_new = nomsg [L347] int check__tmp; [L348] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L350] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L352] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L354] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L356] COND FALSE !(((int)r1) >= 2) [L362] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L364] COND TRUE ((int)r1) < 2 [L366] COND FALSE !(((int)r1) >= 2) [L372] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L374] COND TRUE ((int)r1) < 2 [L376] check__tmp = 1 [L377] __return_1259 = check__tmp [L378] main__c1 = __return_1259 [L380] _Bool __tmp_1; [L381] __tmp_1 = main__c1 [L382] _Bool assert__arg; [L383] assert__arg = __tmp_1 [L384] COND FALSE !(assert__arg == 0) [L390] int main____CPAchecker_TMP_0 = main__i2; [L391] main__i2 = main__i2 + 1 [L392] COND TRUE main__i2 < 6 [L395] COND TRUE !(mode1 == 0) [L397] r1 = (char)(((int)r1) + 1) [L398] COND FALSE !(!(ep21 == 0)) [L406] COND TRUE !(ep31 == 0) [L408] m1 = p31_old [L409] p31_old = nomsg [L410] COND FALSE !(((int)m1) > ((int)max1)) [L414] COND TRUE ((int)r1) == 1 [L416] COND TRUE ((int)max1) == ((int)id1) [L418] st1 = 1 [L419] mode1 = 0 [L421] COND TRUE !(mode2 == 0) [L423] r2 = (char)(((int)r2) + 1) [L424] COND TRUE !(ep12 == 0) [L426] m2 = p12_old [L427] p12_old = nomsg [L428] COND FALSE !(((int)m2) > ((int)max2)) [L432] COND FALSE !(!(ep32 == 0)) [L440] COND FALSE !(((int)r2) == 2) [L446] mode2 = 0 [L448] COND TRUE !(mode3 == 0) [L450] r3 = (char)(((int)r3) + 1) [L451] COND FALSE !(!(ep13 == 0)) [L459] COND TRUE !(ep23 == 0) [L461] m3 = p23_old [L462] p23_old = nomsg [L463] COND TRUE ((int)m3) > ((int)max3) [L465] max3 = m3 [L467] COND FALSE !(((int)r3) == 2) [L473] mode3 = 0 [L474] p12_old = p12_new [L475] p12_new = nomsg [L476] p13_old = p13_new [L477] p13_new = nomsg [L478] p21_old = p21_new [L479] p21_new = nomsg [L480] p23_old = p23_new [L481] p23_new = nomsg [L482] p31_old = p31_new [L483] p31_new = nomsg [L484] p32_old = p32_new [L485] p32_new = nomsg [L487] int check__tmp; [L488] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L490] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L492] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L494] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L496] COND FALSE !(((int)r1) >= 2) [L502] COND FALSE !(((((int)st1) + ((int)st2)) + ((int)st3)) == 0) [L508] check__tmp = 0 [L509] __return_1679 = check__tmp [L510] main__c1 = __return_1679 [L512] _Bool __tmp_2; [L513] __tmp_2 = main__c1 [L514] _Bool assert__arg; [L515] assert__arg = __tmp_2 [L516] COND TRUE assert__arg == 0 [L518] CALL reach_error() [L4] __assert_fail("0", "pals_floodmax.3.2.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c", 4, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 250 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 189.1s, OverallIterations: 20, TraceHistogramMax: 1, AutomataDifference: 79.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 8601 SDtfs, 18639 SDslu, 15985 SDs, 0 SdLazy, 12428 SolverSat, 626 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 28.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 251 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 851 ImplicationChecksByTransitivity, 28.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10466occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 14.1s AutomataMinimizationTime, 19 MinimizatonAttempts, 70003 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 93.1s InterpolantComputationTime, 2132 NumberOfCodeBlocks, 2132 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 1999 ConstructedInterpolants, 0 QuantifiedInterpolants, 1745663 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 19 InterpolantComputations, 19 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...